Update vendor (whatsapp)

54 files changed, 42371 insertions, 3 deletions

diff --git a/vendor/modernc.org/libc/CONTRIBUTORS b/vendor/modernc.org/libc/CONTRIBUTORS
index 65a90f50..2bed7daf 100644
--- a/vendor/modernc.org/libc/CONTRIBUTORS
+++ b/vendor/modernc.org/libc/CONTRIBUTORS
@@ -14,3 +14,4 @@ Jason DeBettencourt <jasond17@gmail.com>
 Koichi Shiraishi <zchee.io@gmail.com>
 Marius Orcsik <marius@federated.id>
 Steffen Butzer <steffen(dot)butzer@outlook.com>
+ZHU Zijia <piggynl@outlook.com>
diff --git a/vendor/modernc.org/libc/capi_linux_riscv64.go b/vendor/modernc.org/libc/capi_linux_riscv64.go
new file mode 100644
index 00000000..b6f3b2a0
--- /dev/null
+++ b/vendor/modernc.org/libc/capi_linux_riscv64.go
@@ -0,0 +1,509 @@
+// Code generated by 'go generate' - DO NOT EDIT.
+
+package libc // import "modernc.org/libc"
+
+var CAPI = map[string]struct{}{
+	"_IO_putc":                         {},
+	"___errno_location":                {},
+	"__assert_fail":                    {},
+	"__builtin___memcpy_chk":           {},
+	"__builtin___memmove_chk":          {},
+	"__builtin___memset_chk":           {},
+	"__builtin___snprintf_chk":         {},
+	"__builtin___sprintf_chk":          {},
+	"__builtin___strcat_chk":           {},
+	"__builtin___strcpy_chk":           {},
+	"__builtin___strncpy_chk":          {},
+	"__builtin___vsnprintf_chk":        {},
+	"__builtin_abort":                  {},
+	"__builtin_abs":                    {},
+	"__builtin_add_overflowInt64":      {},
+	"__builtin_add_overflowUint32":     {},
+	"__builtin_add_overflowUint64":     {},
+	"__builtin_bswap16":                {},
+	"__builtin_bswap32":                {},
+	"__builtin_bswap64":                {},
+	"__builtin_bzero":                  {},
+	"__builtin_clz":                    {},
+	"__builtin_clzl":                   {},
+	"__builtin_clzll":                  {},
+	"__builtin_constant_p_impl":        {},
+	"__builtin_copysign":               {},
+	"__builtin_copysignf":              {},
+	"__builtin_copysignl":              {},
+	"__builtin_exit":                   {},
+	"__builtin_expect":                 {},
+	"__builtin_fabs":                   {},
+	"__builtin_fabsf":                  {},
+	"__builtin_fabsl":                  {},
+	"__builtin_free":                   {},
+	"__builtin_getentropy":             {},
+	"__builtin_huge_val":               {},
+	"__builtin_huge_valf":              {},
+	"__builtin_inf":                    {},
+	"__builtin_inff":                   {},
+	"__builtin_infl":                   {},
+	"__builtin_isnan":                  {},
+	"__builtin_isunordered":            {},
+	"__builtin_malloc":                 {},
+	"__builtin_memcmp":                 {},
+	"__builtin_memcpy":                 {},
+	"__builtin_memset":                 {},
+	"__builtin_mmap":                   {},
+	"__builtin_mul_overflowInt64":      {},
+	"__builtin_mul_overflowUint128":    {},
+	"__builtin_mul_overflowUint64":     {},
+	"__builtin_nan":                    {},
+	"__builtin_nanf":                   {},
+	"__builtin_nanl":                   {},
+	"__builtin_object_size":            {},
+	"__builtin_popcount":               {},
+	"__builtin_popcountl":              {},
+	"__builtin_prefetch":               {},
+	"__builtin_printf":                 {},
+	"__builtin_snprintf":               {},
+	"__builtin_sprintf":                {},
+	"__builtin_strchr":                 {},
+	"__builtin_strcmp":                 {},
+	"__builtin_strcpy":                 {},
+	"__builtin_strlen":                 {},
+	"__builtin_sub_overflowInt64":      {},
+	"__builtin_trap":                   {},
+	"__builtin_unreachable":            {},
+	"__ccgo_dmesg":                     {},
+	"__ccgo_getMutexType":              {},
+	"__ccgo_in6addr_anyp":              {},
+	"__ccgo_pthreadAttrGetDetachState": {},
+	"__ccgo_pthreadMutexattrGettype":   {},
+	"__ccgo_sqlite3_log":               {},
+	"__cmsg_nxthdr":                    {},
+	"__ctype_b_loc":                    {},
+	"__ctype_get_mb_cur_max":           {},
+	"__errno_location":                 {},
+	"__floatscan":                      {},
+	"__fpclassify":                     {},
+	"__fpclassifyf":                    {},
+	"__fpclassifyl":                    {},
+	"__fsmu8":                          {},
+	"__h_errno_location":               {},
+	"__inet_aton":                      {},
+	"__intscan":                        {},
+	"__isalnum_l":                      {},
+	"__isalpha_l":                      {},
+	"__isdigit_l":                      {},
+	"__islower_l":                      {},
+	"__isnan":                          {},
+	"__isnanf":                         {},
+	"__isnanl":                         {},
+	"__isoc99_sscanf":                  {},
+	"__isprint_l":                      {},
+	"__isupper_l":                      {},
+	"__isxdigit_l":                     {},
+	"__lockfile":                       {},
+	"__lookup_ipliteral":               {},
+	"__lookup_name":                    {},
+	"__lookup_serv":                    {},
+	"__shgetc":                         {},
+	"__shlim":                          {},
+	"__strncasecmp_l":                  {},
+	"__sync_add_and_fetch_uint32":      {},
+	"__sync_sub_and_fetch_uint32":      {},
+	"__syscall1":                       {},
+	"__syscall3":                       {},
+	"__syscall4":                       {},
+	"__toread":                         {},
+	"__toread_needs_stdio_exit":        {},
+	"__uflow":                          {},
+	"__unlockfile":                     {},
+	"_exit":                            {},
+	"_longjmp":                         {},
+	"_obstack_begin":                   {},
+	"_obstack_newchunk":                {},
+	"_setjmp":                          {},
+	"abort":                            {},
+	"abs":                              {},
+	"accept":                           {},
+	"access":                           {},
+	"acos":                             {},
+	"acosh":                            {},
+	"alarm":                            {},
+	"asin":                             {},
+	"asinh":                            {},
+	"atan":                             {},
+	"atan2":                            {},
+	"atanh":                            {},
+	"atexit":                           {},
+	"atof":                             {},
+	"atoi":                             {},
+	"atol":                             {},
+	"backtrace":                        {},
+	"backtrace_symbols_fd":             {},
+	"bind":                             {},
+	"bsearch":                          {},
+	"bzero":                            {},
+	"calloc":                           {},
+	"ceil":                             {},
+	"ceilf":                            {},
+	"cfgetospeed":                      {},
+	"cfsetispeed":                      {},
+	"cfsetospeed":                      {},
+	"chdir":                            {},
+	"chmod":                            {},
+	"chown":                            {},
+	"clock_gettime":                    {},
+	"close":                            {},
+	"closedir":                         {},
+	"confstr":                          {},
+	"connect":                          {},
+	"copysign":                         {},
+	"copysignf":                        {},
+	"copysignl":                        {},
+	"cos":                              {},
+	"cosf":                             {},
+	"cosh":                             {},
+	"ctime":                            {},
+	"ctime_r":                          {},
+	"dlclose":                          {},
+	"dlerror":                          {},
+	"dlopen":                           {},
+	"dlsym":                            {},
+	"dup2":                             {},
+	"endpwent":                         {},
+	"environ":                          {},
+	"execvp":                           {},
+	"exit":                             {},
+	"exp":                              {},
+	"fabs":                             {},
+	"fabsf":                            {},
+	"fabsl":                            {},
+	"fchmod":                           {},
+	"fchown":                           {},
+	"fclose":                           {},
+	"fcntl":                            {},
+	"fcntl64":                          {},
+	"fdopen":                           {},
+	"ferror":                           {},
+	"fflush":                           {},
+	"fgetc":                            {},
+	"fgets":                            {},
+	"fileno":                           {},
+	"floor":                            {},
+	"fmod":                             {},
+	"fmodl":                            {},
+	"fopen":                            {},
+	"fopen64":                          {},
+	"fork":                             {},
+	"fprintf":                          {},
+	"fputc":                            {},
+	"fputs":                            {},
+	"fread":                            {},
+	"free":                             {},
+	"freeaddrinfo":                     {},
+	"frexp":                            {},
+	"fscanf":                           {},
+	"fseek":                            {},
+	"fstat":                            {},
+	"fstat64":                          {},
+	"fstatfs":                          {},
+	"fsync":                            {},
+	"ftell":                            {},
+	"ftruncate":                        {},
+	"ftruncate64":                      {},
+	"fts64_close":                      {},
+	"fts64_open":                       {},
+	"fts64_read":                       {},
+	"fts_close":                        {},
+	"fts_open":                         {},
+	"fts_read":                         {},
+	"fwrite":                           {},
+	"gai_strerror":                     {},
+	"getaddrinfo":                      {},
+	"getc":                             {},
+	"getcwd":                           {},
+	"getegid":                          {},
+	"getentropy":                       {},
+	"getenv":                           {},
+	"geteuid":                          {},
+	"getgid":                           {},
+	"getgrgid":                         {},
+	"getgrgid_r":                       {},
+	"getgrnam":                         {},
+	"getgrnam_r":                       {},
+	"gethostbyaddr":                    {},
+	"gethostbyaddr_r":                  {},
+	"gethostbyname":                    {},
+	"gethostbyname2":                   {},
+	"gethostbyname2_r":                 {},
+	"gethostbyname_r":                  {},
+	"gethostname":                      {},
+	"getnameinfo":                      {},
+	"getpeername":                      {},
+	"getpid":                           {},
+	"getpwnam":                         {},
+	"getpwnam_r":                       {},
+	"getpwuid":                         {},
+	"getpwuid_r":                       {},
+	"getrandom":                        {},
+	"getresgid":                        {},
+	"getresuid":                        {},
+	"getrlimit":                        {},
+	"getrlimit64":                      {},
+	"getrusage":                        {},
+	"getservbyname":                    {},
+	"getsockname":                      {},
+	"getsockopt":                       {},
+	"gettimeofday":                     {},
+	"getuid":                           {},
+	"gmtime_r":                         {},
+	"h_errno":                          {},
+	"htonl":                            {},
+	"htons":                            {},
+	"hypot":                            {},
+	"inet_ntoa":                        {},
+	"inet_ntop":                        {},
+	"inet_pton":                        {},
+	"initstate":                        {},
+	"initstate_r":                      {},
+	"ioctl":                            {},
+	"isalnum":                          {},
+	"isalpha":                          {},
+	"isascii":                          {},
+	"isatty":                           {},
+	"isdigit":                          {},
+	"islower":                          {},
+	"isnan":                            {},
+	"isnanf":                           {},
+	"isnanl":                           {},
+	"isprint":                          {},
+	"isupper":                          {},
+	"iswalnum":                         {},
+	"iswspace":                         {},
+	"isxdigit":                         {},
+	"kill":                             {},
+	"ldexp":                            {},
+	"link":                             {},
+	"listen":                           {},
+	"localeconv":                       {},
+	"localtime":                        {},
+	"localtime_r":                      {},
+	"log":                              {},
+	"log10":                            {},
+	"longjmp":                          {},
+	"lrand48":                          {},
+	"lseek":                            {},
+	"lseek64":                          {},
+	"lstat":                            {},
+	"lstat64":                          {},
+	"malloc":                           {},
+	"mblen":                            {},
+	"mbrtowc":                          {},
+	"mbsinit":                          {},
+	"mbstowcs":                         {},
+	"mbtowc":                           {},
+	"memchr":                           {},
+	"memcmp":                           {},
+	"memcpy":                           {},
+	"memmove":                          {},
+	"memset":                           {},
+	"mkdir":                            {},
+	"mkfifo":                           {},
+	"mknod":                            {},
+	"mkostemp":                         {},
+	"mkstemp":                          {},
+	"mkstemp64":                        {},
+	"mkstemps":                         {},
+	"mkstemps64":                       {},
+	"mktime":                           {},
+	"mmap":                             {},
+	"mmap64":                           {},
+	"modf":                             {},
+	"mremap":                           {},
+	"munmap":                           {},
+	"nanf":                             {},
+	"nl_langinfo":                      {},
+	"ntohs":                            {},
+	"obstack_free":                     {},
+	"obstack_vprintf":                  {},
+	"open":                             {},
+	"open64":                           {},
+	"opendir":                          {},
+	"openpty":                          {},
+	"pathconf":                         {},
+	"pause":                            {},
+	"pclose":                           {},
+	"perror":                           {},
+	"pipe":                             {},
+	"poll":                             {},
+	"popen":                            {},
+	"posix_fadvise":                    {},
+	"pow":                              {},
+	"printf":                           {},
+	"pselect":                          {},
+	"pthread_attr_destroy":             {},
+	"pthread_attr_getdetachstate":      {},
+	"pthread_attr_init":                {},
+	"pthread_attr_setdetachstate":      {},
+	"pthread_attr_setscope":            {},
+	"pthread_attr_setstacksize":        {},
+	"pthread_cond_broadcast":           {},
+	"pthread_cond_destroy":             {},
+	"pthread_cond_init":                {},
+	"pthread_cond_signal":              {},
+	"pthread_cond_timedwait":           {},
+	"pthread_cond_wait":                {},
+	"pthread_create":                   {},
+	"pthread_detach":                   {},
+	"pthread_equal":                    {},
+	"pthread_exit":                     {},
+	"pthread_getspecific":              {},
+	"pthread_join":                     {},
+	"pthread_key_create":               {},
+	"pthread_key_delete":               {},
+	"pthread_mutex_destroy":            {},
+	"pthread_mutex_init":               {},
+	"pthread_mutex_lock":               {},
+	"pthread_mutex_trylock":            {},
+	"pthread_mutex_unlock":             {},
+	"pthread_mutexattr_destroy":        {},
+	"pthread_mutexattr_init":           {},
+	"pthread_mutexattr_settype":        {},
+	"pthread_self":                     {},
+	"pthread_setspecific":              {},
+	"putc":                             {},
+	"putchar":                          {},
+	"puts":                             {},
+	"pwrite":                           {},
+	"qsort":                            {},
+	"raise":                            {},
+	"rand":                             {},
+	"rand_r":                           {},
+	"random":                           {},
+	"random_r":                         {},
+	"read":                             {},
+	"readdir":                          {},
+	"readdir64":                        {},
+	"readlink":                         {},
+	"readv":                            {},
+	"realloc":                          {},
+	"reallocarray":                     {},
+	"realpath":                         {},
+	"recv":                             {},
+	"recvfrom":                         {},
+	"recvmsg":                          {},
+	"remove":                           {},
+	"rename":                           {},
+	"rewind":                           {},
+	"rindex":                           {},
+	"rint":                             {},
+	"rmdir":                            {},
+	"round":                            {},
+	"scalbn":                           {},
+	"scalbnl":                          {},
+	"sched_yield":                      {},
+	"select":                           {},
+	"send":                             {},
+	"sendmsg":                          {},
+	"sendto":                           {},
+	"setbuf":                           {},
+	"setenv":                           {},
+	"setjmp":                           {},
+	"setlocale":                        {},
+	"setrlimit":                        {},
+	"setrlimit64":                      {},
+	"setsid":                           {},
+	"setsockopt":                       {},
+	"setstate":                         {},
+	"setvbuf":                          {},
+	"shmat":                            {},
+	"shmctl":                           {},
+	"shmdt":                            {},
+	"shutdown":                         {},
+	"sigaction":                        {},
+	"signal":                           {},
+	"sin":                              {},
+	"sinf":                             {},
+	"sinh":                             {},
+	"sleep":                            {},
+	"snprintf":                         {},
+	"socket":                           {},
+	"sprintf":                          {},
+	"sqrt":                             {},
+	"srand48":                          {},
+	"sscanf":                           {},
+	"stat":                             {},
+	"stat64":                           {},
+	"stderr":                           {},
+	"stdin":                            {},
+	"stdout":                           {},
+	"strcasecmp":                       {},
+	"strcat":                           {},
+	"strchr":                           {},
+	"strcmp":                           {},
+	"strcpy":                           {},
+	"strcspn":                          {},
+	"strdup":                           {},
+	"strerror":                         {},
+	"strerror_r":                       {},
+	"strlcat":                          {},
+	"strlcpy":                          {},
+	"strlen":                           {},
+	"strncasecmp":                      {},
+	"strncat":                          {},
+	"strncmp":                          {},
+	"strncpy":                          {},
+	"strnlen":                          {},
+	"strpbrk":                          {},
+	"strrchr":                          {},
+	"strspn":                           {},
+	"strstr":                           {},
+	"strtod":                           {},
+	"strtof":                           {},
+	"strtoimax":                        {},
+	"strtok":                           {},
+	"strtol":                           {},
+	"strtold":                          {},
+	"strtoll":                          {},
+	"strtoul":                          {},
+	"strtoull":                         {},
+	"strtoumax":                        {},
+	"symlink":                          {},
+	"sysconf":                          {},
+	"system":                           {},
+	"tan":                              {},
+	"tanh":                             {},
+	"tcgetattr":                        {},
+	"tcsendbreak":                      {},
+	"tcsetattr":                        {},
+	"time":                             {},
+	"tmpfile":                          {},
+	"tolower":                          {},
+	"toupper":                          {},
+	"trunc":                            {},
+	"tzset":                            {},
+	"umask":                            {},
+	"uname":                            {},
+	"ungetc":                           {},
+	"unlink":                           {},
+	"unsetenv":                         {},
+	"usleep":                           {},
+	"utime":                            {},
+	"utimes":                           {},
+	"uuid_copy":                        {},
+	"uuid_generate_random":             {},
+	"uuid_parse":                       {},
+	"uuid_unparse":                     {},
+	"vasprintf":                        {},
+	"vfprintf":                         {},
+	"vfscanf":                          {},
+	"vprintf":                          {},
+	"vsnprintf":                        {},
+	"vsprintf":                         {},
+	"vsscanf":                          {},
+	"waitpid":                          {},
+	"wcschr":                           {},
+	"wctomb":                           {},
+	"wcwidth":                          {},
+	"write":                            {},
+	"writev":                           {},
+	"zero_struct_address":              {},
+}
diff --git a/vendor/modernc.org/libc/errno/capi_linux_riscv64.go b/vendor/modernc.org/libc/errno/capi_linux_riscv64.go
new file mode 100644
index 00000000..630300a3
--- /dev/null
+++ b/vendor/modernc.org/libc/errno/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo errno/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o errno/errno_linux_riscv64.go -pkgname errno', DO NOT EDIT.
+
+package errno
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/errno/errno_linux_riscv64.go b/vendor/modernc.org/libc/errno/errno_linux_riscv64.go
new file mode 100644
index 00000000..6da77ca0
--- /dev/null
+++ b/vendor/modernc.org/libc/errno/errno_linux_riscv64.go
@@ -0,0 +1,187 @@
+// Code generated by 'ccgo errno/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o errno/errno_linux_riscv64.go -pkgname errno', DO NOT EDIT.
+
+package errno
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	E2BIG                      = 7
+	EACCES                     = 13
+	EADDRINUSE                 = 98
+	EADDRNOTAVAIL              = 99
+	EADV                       = 68
+	EAFNOSUPPORT               = 97
+	EAGAIN                     = 11
+	EALREADY                   = 114
+	EBADE                      = 52
+	EBADF                      = 9
+	EBADFD                     = 77
+	EBADMSG                    = 74
+	EBADR                      = 53
+	EBADRQC                    = 56
+	EBADSLT                    = 57
+	EBFONT                     = 59
+	EBUSY                      = 16
+	ECANCELED                  = 125
+	ECHILD                     = 10
+	ECHRNG                     = 44
+	ECOMM                      = 70
+	ECONNABORTED               = 103
+	ECONNREFUSED               = 111
+	ECONNRESET                 = 104
+	EDEADLK                    = 35
+	EDEADLOCK                  = 35
+	EDESTADDRREQ               = 89
+	EDOM                       = 33
+	EDOTDOT                    = 73
+	EDQUOT                     = 122
+	EEXIST                     = 17
+	EFAULT                     = 14
+	EFBIG                      = 27
+	EHOSTDOWN                  = 112
+	EHOSTUNREACH               = 113
+	EHWPOISON                  = 133
+	EIDRM                      = 43
+	EILSEQ                     = 84
+	EINPROGRESS                = 115
+	EINTR                      = 4
+	EINVAL                     = 22
+	EIO                        = 5
+	EISCONN                    = 106
+	EISDIR                     = 21
+	EISNAM                     = 120
+	EKEYEXPIRED                = 127
+	EKEYREJECTED               = 129
+	EKEYREVOKED                = 128
+	EL2HLT                     = 51
+	EL2NSYNC                   = 45
+	EL3HLT                     = 46
+	EL3RST                     = 47
+	ELIBACC                    = 79
+	ELIBBAD                    = 80
+	ELIBEXEC                   = 83
+	ELIBMAX                    = 82
+	ELIBSCN                    = 81
+	ELNRNG                     = 48
+	ELOOP                      = 40
+	EMEDIUMTYPE                = 124
+	EMFILE                     = 24
+	EMLINK                     = 31
+	EMSGSIZE                   = 90
+	EMULTIHOP                  = 72
+	ENAMETOOLONG               = 36
+	ENAVAIL                    = 119
+	ENETDOWN                   = 100
+	ENETRESET                  = 102
+	ENETUNREACH                = 101
+	ENFILE                     = 23
+	ENOANO                     = 55
+	ENOBUFS                    = 105
+	ENOCSI                     = 50
+	ENODATA                    = 61
+	ENODEV                     = 19
+	ENOENT                     = 2
+	ENOEXEC                    = 8
+	ENOKEY                     = 126
+	ENOLCK                     = 37
+	ENOLINK                    = 67
+	ENOMEDIUM                  = 123
+	ENOMEM                     = 12
+	ENOMSG                     = 42
+	ENONET                     = 64
+	ENOPKG                     = 65
+	ENOPROTOOPT                = 92
+	ENOSPC                     = 28
+	ENOSR                      = 63
+	ENOSTR                     = 60
+	ENOSYS                     = 38
+	ENOTBLK                    = 15
+	ENOTCONN                   = 107
+	ENOTDIR                    = 20
+	ENOTEMPTY                  = 39
+	ENOTNAM                    = 118
+	ENOTRECOVERABLE            = 131
+	ENOTSOCK                   = 88
+	ENOTSUP                    = 95
+	ENOTTY                     = 25
+	ENOTUNIQ                   = 76
+	ENXIO                      = 6
+	EOPNOTSUPP                 = 95
+	EOVERFLOW                  = 75
+	EOWNERDEAD                 = 130
+	EPERM                      = 1
+	EPFNOSUPPORT               = 96
+	EPIPE                      = 32
+	EPROTO                     = 71
+	EPROTONOSUPPORT            = 93
+	EPROTOTYPE                 = 91
+	ERANGE                     = 34
+	EREMCHG                    = 78
+	EREMOTE                    = 66
+	EREMOTEIO                  = 121
+	ERESTART                   = 85
+	ERFKILL                    = 132
+	EROFS                      = 30
+	ESHUTDOWN                  = 108
+	ESOCKTNOSUPPORT            = 94
+	ESPIPE                     = 29
+	ESRCH                      = 3
+	ESRMNT                     = 69
+	ESTALE                     = 116
+	ESTRPIPE                   = 86
+	ETIME                      = 62
+	ETIMEDOUT                  = 110
+	ETOOMANYREFS               = 109
+	ETXTBSY                    = 26
+	EUCLEAN                    = 117
+	EUNATCH                    = 49
+	EUSERS                     = 87
+	EWOULDBLOCK                = 11
+	EXDEV                      = 18
+	EXFULL                     = 54
+	X_ASM_GENERIC_ERRNO_BASE_H = 0
+	X_ASM_GENERIC_ERRNO_H      = 0
+	X_ATFILE_SOURCE            = 1
+	X_BITS_ERRNO_H             = 1
+	X_DEFAULT_SOURCE           = 1
+	X_ERRNO_H                  = 1
+	X_FEATURES_H               = 1
+	X_FILE_OFFSET_BITS         = 64
+	X_LP64                     = 1
+	X_POSIX_C_SOURCE           = 200809
+	X_POSIX_SOURCE             = 1
+	X_STDC_PREDEF_H            = 1
+	X_SYS_CDEFS_H              = 1
+	Linux                      = 1
+	Unix                       = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/fcntl/capi_linux_riscv64.go b/vendor/modernc.org/libc/fcntl/capi_linux_riscv64.go
new file mode 100644
index 00000000..abbc7779
--- /dev/null
+++ b/vendor/modernc.org/libc/fcntl/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo fcntl/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o fcntl/fcntl_linux_riscv64.go -pkgname fcntl', DO NOT EDIT.
+
+package fcntl
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/fcntl/fcntl_linux_riscv64.go b/vendor/modernc.org/libc/fcntl/fcntl_linux_riscv64.go
new file mode 100644
index 00000000..e3c1e192
--- /dev/null
+++ b/vendor/modernc.org/libc/fcntl/fcntl_linux_riscv64.go
@@ -0,0 +1,1346 @@
+// Code generated by 'ccgo fcntl/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o fcntl/fcntl_linux_riscv64.go -pkgname fcntl', DO NOT EDIT.
+
+package fcntl
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	AT_EACCESS            = 0x200
+	AT_FDCWD              = -100
+	AT_REMOVEDIR          = 0x200
+	AT_SYMLINK_FOLLOW     = 0x400
+	AT_SYMLINK_NOFOLLOW   = 0x100
+	FAPPEND               = 1024
+	FASYNC                = 8192
+	FD_CLOEXEC            = 1
+	FFSYNC                = 1052672
+	FNDELAY               = 2048
+	FNONBLOCK             = 2048
+	F_DUPFD               = 0
+	F_DUPFD_CLOEXEC       = 1030
+	F_EXLCK               = 4
+	F_GETFD               = 1
+	F_GETFL               = 3
+	F_GETLK               = 5
+	F_GETLK64             = 5
+	F_GETOWN              = 9
+	F_LOCK                = 1
+	F_OK                  = 0
+	F_RDLCK               = 0
+	F_SETFD               = 2
+	F_SETFL               = 4
+	F_SETLK               = 6
+	F_SETLK64             = 6
+	F_SETLKW              = 7
+	F_SETLKW64            = 7
+	F_SETOWN              = 8
+	F_SHLCK               = 8
+	F_TEST                = 3
+	F_TLOCK               = 2
+	F_ULOCK               = 0
+	F_UNLCK               = 2
+	F_WRLCK               = 1
+	LOCK_EX               = 2
+	LOCK_NB               = 4
+	LOCK_SH               = 1
+	LOCK_UN               = 8
+	O_ACCMODE             = 0003
+	O_APPEND              = 02000
+	O_ASYNC               = 020000
+	O_CLOEXEC             = 524288
+	O_CREAT               = 0100
+	O_DIRECTORY           = 65536
+	O_DSYNC               = 4096
+	O_EXCL                = 0200
+	O_FSYNC               = 1052672
+	O_NDELAY              = 2048
+	O_NOCTTY              = 0400
+	O_NOFOLLOW            = 131072
+	O_NONBLOCK            = 04000
+	O_RDONLY              = 00
+	O_RDWR                = 02
+	O_RSYNC               = 1052672
+	O_SYNC                = 04010000
+	O_TRUNC               = 01000
+	O_WRONLY              = 01
+	POSIX_FADV_DONTNEED   = 4
+	POSIX_FADV_NOREUSE    = 5
+	POSIX_FADV_NORMAL     = 0
+	POSIX_FADV_RANDOM     = 1
+	POSIX_FADV_SEQUENTIAL = 2
+	POSIX_FADV_WILLNEED   = 3
+	R_OK                  = 4
+	SEEK_CUR              = 1
+	SEEK_END              = 2
+	SEEK_SET              = 0
+	S_IFBLK               = 24576
+	S_IFCHR               = 8192
+	S_IFDIR               = 16384
+	S_IFIFO               = 4096
+	S_IFLNK               = 40960
+	S_IFMT                = 61440
+	S_IFREG               = 32768
+	S_IFSOCK              = 49152
+	S_IRGRP               = 32
+	S_IROTH               = 4
+	S_IRUSR               = 256
+	S_IRWXG               = 56
+	S_IRWXO               = 7
+	S_IRWXU               = 448
+	S_ISGID               = 1024
+	S_ISUID               = 2048
+	S_ISVTX               = 512
+	S_IWGRP               = 16
+	S_IWOTH               = 2
+	S_IWUSR               = 128
+	S_IXGRP               = 8
+	S_IXOTH               = 1
+	S_IXUSR               = 64
+	UTIME_NOW             = 1073741823
+	UTIME_OMIT            = 1073741822
+	W_OK                  = 2
+	X_OK                  = 1
+	X_ATFILE_SOURCE       = 1
+	X_BITS_ENDIANNESS_H   = 1
+	X_BITS_ENDIAN_H       = 1
+	X_BITS_STAT_H         = 1
+	X_BITS_STRUCT_STAT_H  = 1
+	X_BITS_TIME64_H       = 1
+	X_BITS_TYPESIZES_H    = 1
+	X_BITS_TYPES_H        = 1
+	X_DEFAULT_SOURCE      = 1
+	X_FCNTL_H             = 1
+	X_FEATURES_H          = 1
+	X_FILE_OFFSET_BITS    = 64
+	X_LP64                = 1
+	X_POSIX_C_SOURCE      = 200809
+	X_POSIX_SOURCE        = 1
+	X_STATBUF_ST_BLKSIZE  = 0
+	X_STATBUF_ST_NSEC     = 0
+	X_STATBUF_ST_RDEV     = 0
+	X_STDC_PREDEF_H       = 1
+	X_STRUCT_TIMESPEC     = 1
+	X_SYS_CDEFS_H         = 1
+	Linux                 = 1
+	Unix                  = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 6.5 File Control Operations	<fcntl.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// This must be early so <bits/fcntl.h> can define types winningly.
+
+// Get __mode_t, __dev_t and __off_t  .
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+// Get the definitions of O_*, F_*, FD_*: all the
+//    numbers and flag bits for `open', `fcntl', et al.
+// O_*, F_*, FD_* bit values for Linux / RISC-V.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// In 64-bit ISA files are always with 64bit off_t and F_*LK64 are the same as
+//    non-64-bit versions.  It will need to be revised for 128-bit.
+
+type Flock = struct {
+	Fl_type      int16
+	Fl_whence    int16
+	F__ccgo_pad1 [4]byte
+	Fl_start     X__off_t
+	Fl_len       X__off_t
+	Fl_pid       X__pid_t
+	F__ccgo_pad2 [4]byte
+} /* fcntl.h:36:1 */
+
+// Include generic Linux declarations.
+// O_*, F_*, FD_* bit values for Linux.
+//    Copyright (C) 2001-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file contains shared definitions between Linux architectures
+//    and is included by <bits/fcntl.h> to declare them.  The various
+//    #ifndef cases allow the architecture specific file to define those
+//    values with different values.
+//
+//    A minimal <bits/fcntl.h> contains just:
+//
+//    struct flock {...}
+//    #ifdef __USE_LARGEFILE64
+//    struct flock64 {...}
+//    #endif
+//    #include <bits/fcntl-linux.h>
+
+// open/fcntl.
+
+// open file description locks.
+//
+//    Usually record locks held by a process are released on *any* close and are
+//    not inherited across a fork.
+//
+//    These cmd values will set locks that conflict with process-associated record
+//    locks, but are "owned" by the opened file description, not the process.
+//    This means that they are inherited across fork or clone with CLONE_FILES
+//    like BSD (flock) locks, and they are only released automatically when the
+//    last reference to the the file description against which they were acquired
+//    is put.
+
+// For now, Linux has no separate synchronicity options for read
+//    operations.  We define O_RSYNC therefore as the same as O_SYNC
+//    since this is a superset.
+
+// Values for the second argument to `fcntl'.
+
+// For F_[GET|SET]FD.
+
+// For posix fcntl() and `l_type' field of a `struct flock' for lockf().
+
+// For old implementation of BSD flock.
+
+// Operations for BSD flock, also used by the kernel implementation.
+
+// Define some more compatibility macros to be backward compatible with
+//    BSD systems which did not managed to hide these kernel macros.
+
+// Advise to `posix_fadvise'.
+
+// Values for `*at' functions.
+
+// Detect if open needs mode as a third argument (or for openat as a fourth
+//    argument).
+
+// POSIX.1-2001 specifies that these types are defined by <fcntl.h>.
+//    Earlier POSIX standards permitted any type ending in `_t' to be defined
+//    by any POSIX header, so we don't conditionalize the definitions here.
+type Mode_t = X__mode_t /* fcntl.h:50:18 */
+
+type Off_t = X__off64_t /* fcntl.h:58:19 */
+
+type Pid_t = X__pid_t /* fcntl.h:69:17 */
+
+// For XPG all symbols from <sys/stat.h> should also be available.
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Definitions for byte order, according to significance of bytes,
+//    from low addresses to high addresses.  The value is what you get by
+//    putting '4' in the most significant byte, '3' in the second most
+//    significant byte, '2' in the second least significant byte, and '1'
+//    in the least significant byte, and then writing down one digit for
+//    each byte, starting with the byte at the lowest address at the left,
+//    and proceeding to the byte with the highest address at the right.
+
+// This file defines `__BYTE_ORDER' for the particular machine.
+
+// RISC-V is little-endian.
+
+// Some machines may need to use a different endianness for floating point
+//    values.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition for struct stat.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+type Stat = struct {
+	Fst_dev     X__dev_t
+	Fst_ino     X__ino64_t
+	Fst_mode    X__mode_t
+	Fst_nlink   X__nlink_t
+	Fst_uid     X__uid_t
+	Fst_gid     X__gid_t
+	Fst_rdev    X__dev_t
+	F__pad1     X__dev_t
+	Fst_size    X__off64_t
+	Fst_blksize X__blksize_t
+	F__pad2     int32
+	Fst_blocks  X__blkcnt64_t
+	Fst_atim    struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fst_mtim struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fst_ctim struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	F__glibc_reserved [2]int32
+} /* struct_stat.h:44:1 */
+
+// Define some inlines helping to catch common problems.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/fts/capi_linux_riscv64.go b/vendor/modernc.org/libc/fts/capi_linux_riscv64.go
new file mode 100644
index 00000000..76de2772
--- /dev/null
+++ b/vendor/modernc.org/libc/fts/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo fts/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o fts/fts_linux_riscv64.go -pkgname fts', DO NOT EDIT.
+
+package fts
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/fts/fts_linux_riscv64.go b/vendor/modernc.org/libc/fts/fts_linux_riscv64.go
new file mode 100644
index 00000000..0332df86
--- /dev/null
+++ b/vendor/modernc.org/libc/fts/fts_linux_riscv64.go
@@ -0,0 +1,2156 @@
+// Code generated by 'ccgo fts/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o fts/fts_linux_riscv64.go -pkgname fts', DO NOT EDIT.
+
+package fts
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	ACCESSPERMS                  = 511
+	ALLPERMS                     = 4095
+	BIG_ENDIAN                   = 4321
+	BYTE_ORDER                   = 1234
+	DEFFILEMODE                  = 438
+	FD_SETSIZE                   = 1024
+	FTS_AGAIN                    = 1
+	FTS_COMFOLLOW                = 0x0001
+	FTS_D                        = 1
+	FTS_DC                       = 2
+	FTS_DEFAULT                  = 3
+	FTS_DNR                      = 4
+	FTS_DONTCHDIR                = 0x01
+	FTS_DOT                      = 5
+	FTS_DP                       = 6
+	FTS_ERR                      = 7
+	FTS_F                        = 8
+	FTS_FOLLOW                   = 2
+	FTS_INIT                     = 9
+	FTS_LOGICAL                  = 0x0002
+	FTS_NAMEONLY                 = 0x0100
+	FTS_NOCHDIR                  = 0x0004
+	FTS_NOINSTR                  = 3
+	FTS_NOSTAT                   = 0x0008
+	FTS_NS                       = 10
+	FTS_NSOK                     = 11
+	FTS_OPTIONMASK               = 0x00ff
+	FTS_PHYSICAL                 = 0x0010
+	FTS_ROOTLEVEL                = 0
+	FTS_ROOTPARENTLEVEL          = -1
+	FTS_SEEDOT                   = 0x0020
+	FTS_SKIP                     = 4
+	FTS_SL                       = 12
+	FTS_SLNONE                   = 13
+	FTS_STOP                     = 0x0200
+	FTS_SYMFOLLOW                = 0x02
+	FTS_W                        = 14
+	FTS_WHITEOUT                 = 0x0080
+	FTS_XDEV                     = 0x0040
+	LITTLE_ENDIAN                = 1234
+	PDP_ENDIAN                   = 3412
+	S_BLKSIZE                    = 512
+	S_IEXEC                      = 64
+	S_IFBLK                      = 24576
+	S_IFCHR                      = 8192
+	S_IFDIR                      = 16384
+	S_IFIFO                      = 4096
+	S_IFLNK                      = 40960
+	S_IFMT                       = 61440
+	S_IFREG                      = 32768
+	S_IFSOCK                     = 49152
+	S_IREAD                      = 256
+	S_IRGRP                      = 32
+	S_IROTH                      = 4
+	S_IRUSR                      = 256
+	S_IRWXG                      = 56
+	S_IRWXO                      = 7
+	S_IRWXU                      = 448
+	S_ISGID                      = 1024
+	S_ISUID                      = 2048
+	S_ISVTX                      = 512
+	S_IWGRP                      = 16
+	S_IWOTH                      = 2
+	S_IWRITE                     = 128
+	S_IWUSR                      = 128
+	S_IXGRP                      = 8
+	S_IXOTH                      = 1
+	S_IXUSR                      = 64
+	UTIME_NOW                    = 1073741823
+	UTIME_OMIT                   = 1073741822
+	X_ATFILE_SOURCE              = 1
+	X_BITS_BYTESWAP_H            = 1
+	X_BITS_ENDIANNESS_H          = 1
+	X_BITS_ENDIAN_H              = 1
+	X_BITS_PTHREADTYPES_ARCH_H   = 1
+	X_BITS_PTHREADTYPES_COMMON_H = 1
+	X_BITS_STAT_H                = 1
+	X_BITS_STDINT_INTN_H         = 1
+	X_BITS_STRUCT_STAT_H         = 1
+	X_BITS_TIME64_H              = 1
+	X_BITS_TYPESIZES_H           = 1
+	X_BITS_TYPES_H               = 1
+	X_BITS_UINTN_IDENTITY_H      = 1
+	X_BSD_SIZE_T_                = 0
+	X_BSD_SIZE_T_DEFINED_        = 0
+	X_DEFAULT_SOURCE             = 1
+	X_ENDIAN_H                   = 1
+	X_FEATURES_H                 = 1
+	X_FILE_OFFSET_BITS           = 64
+	X_FTS_H                      = 1
+	X_GCC_SIZE_T                 = 0
+	X_LP64                       = 1
+	X_POSIX_C_SOURCE             = 200809
+	X_POSIX_SOURCE               = 1
+	X_RWLOCK_INTERNAL_H          = 0
+	X_SIZET_                     = 0
+	X_SIZE_T                     = 0
+	X_SIZE_T_                    = 0
+	X_SIZE_T_DECLARED            = 0
+	X_SIZE_T_DEFINED             = 0
+	X_SIZE_T_DEFINED_            = 0
+	X_STATBUF_ST_BLKSIZE         = 0
+	X_STATBUF_ST_NSEC            = 0
+	X_STATBUF_ST_RDEV            = 0
+	X_STDC_PREDEF_H              = 1
+	X_STRUCT_TIMESPEC            = 1
+	X_SYS_CDEFS_H                = 1
+	X_SYS_SELECT_H               = 1
+	X_SYS_SIZE_T_H               = 0
+	X_SYS_STAT_H                 = 1
+	X_SYS_TYPES_H                = 1
+	X_THREAD_MUTEX_INTERNAL_H    = 1
+	X_THREAD_SHARED_TYPES_H      = 1
+	X_T_SIZE                     = 0
+	X_T_SIZE_                    = 0
+	Linux                        = 1
+	Unix                         = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint64  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We don't use `memset' because this would require a prototype and
+//    the array isn't too big.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//    microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int64 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [16]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 5.6 File Characteristics	<sys/stat.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// The Single Unix specification says that some more types are
+//    available here.
+
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition for struct stat.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+type Stat = struct {
+	Fst_dev     X__dev_t
+	Fst_ino     X__ino64_t
+	Fst_mode    X__mode_t
+	Fst_nlink   X__nlink_t
+	Fst_uid     X__uid_t
+	Fst_gid     X__gid_t
+	Fst_rdev    X__dev_t
+	F__pad1     X__dev_t
+	Fst_size    X__off64_t
+	Fst_blksize X__blksize_t
+	F__pad2     int32
+	Fst_blocks  X__blkcnt64_t
+	Fst_atim    struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fst_mtim struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fst_ctim struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	F__glibc_reserved [2]int32
+} /* struct_stat.h:44:1 */
+
+// File tree traversal functions declarations.
+//    Copyright (C) 1994-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (c) 1989, 1993
+//	The Regents of the University of California.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 4. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	@(#)fts.h	8.3 (Berkeley) 8/14/94
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+type X_ftsent = struct {
+	Ffts_cycle   uintptr
+	Ffts_parent  uintptr
+	Ffts_link    uintptr
+	Ffts_number  int64
+	Ffts_pointer uintptr
+	Ffts_accpath uintptr
+	Ffts_path    uintptr
+	Ffts_errno   int32
+	Ffts_symfd   int32
+	Ffts_pathlen uint16
+	Ffts_namelen uint16
+	F__ccgo_pad1 [4]byte
+	Ffts_ino     Ino_t
+	Ffts_dev     Dev_t
+	Ffts_nlink   Nlink_t
+	Ffts_level   int16
+	Ffts_info    uint16
+	Ffts_flags   uint16
+	Ffts_instr   uint16
+	F__ccgo_pad2 [4]byte
+	Ffts_statp   uintptr
+	Ffts_name    [1]uint8
+	F__ccgo_pad3 [7]byte
+} /* fts.h:58:2 */
+
+// File tree traversal functions declarations.
+//    Copyright (C) 1994-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (c) 1989, 1993
+//	The Regents of the University of California.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 4. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	@(#)fts.h	8.3 (Berkeley) 8/14/94
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+type FTS = struct {
+	Ffts_cur     uintptr
+	Ffts_child   uintptr
+	Ffts_array   uintptr
+	Ffts_dev     Dev_t
+	Ffts_path    uintptr
+	Ffts_rfd     int32
+	Ffts_pathlen int32
+	Ffts_nitems  int32
+	F__ccgo_pad1 [4]byte
+	Ffts_compar  uintptr
+	Ffts_options int32
+	F__ccgo_pad2 [4]byte
+} /* fts.h:81:3 */
+
+type FTSENT = X_ftsent /* fts.h:147:3 */
+
+var _ uint8 /* gen.c:5:13: */
diff --git a/vendor/modernc.org/libc/grp/capi_linux_riscv64.go b/vendor/modernc.org/libc/grp/capi_linux_riscv64.go
new file mode 100644
index 00000000..be15deec
--- /dev/null
+++ b/vendor/modernc.org/libc/grp/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo grp/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o grp/grp_linux_riscv64.go -pkgname grp', DO NOT EDIT.
+
+package grp
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/grp/grp_linux_riscv64.go b/vendor/modernc.org/libc/grp/grp_linux_riscv64.go
new file mode 100644
index 00000000..f5f68e96
--- /dev/null
+++ b/vendor/modernc.org/libc/grp/grp_linux_riscv64.go
@@ -0,0 +1,953 @@
+// Code generated by 'ccgo grp/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o grp/grp_linux_riscv64.go -pkgname grp', DO NOT EDIT.
+
+package grp
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	NSS_BUFLEN_GROUP      = 1024
+	X_ATFILE_SOURCE       = 1
+	X_BITS_TIME64_H       = 1
+	X_BITS_TYPESIZES_H    = 1
+	X_BITS_TYPES_H        = 1
+	X_BSD_SIZE_T_         = 0
+	X_BSD_SIZE_T_DEFINED_ = 0
+	X_DEFAULT_SOURCE      = 1
+	X_FEATURES_H          = 1
+	X_FILE_OFFSET_BITS    = 64
+	X_GCC_SIZE_T          = 0
+	X_GRP_H               = 1
+	X_LP64                = 1
+	X_POSIX_C_SOURCE      = 200809
+	X_POSIX_SOURCE        = 1
+	X_SIZET_              = 0
+	X_SIZE_T              = 0
+	X_SIZE_T_             = 0
+	X_SIZE_T_DECLARED     = 0
+	X_SIZE_T_DEFINED      = 0
+	X_SIZE_T_DEFINED_     = 0
+	X_STDC_PREDEF_H       = 1
+	X_SYS_CDEFS_H         = 1
+	X_SYS_SIZE_T_H        = 0
+	X_T_SIZE              = 0
+	X_T_SIZE_             = 0
+	Linux                 = 1
+	Unix                  = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 9.2.1 Group Database Access	<grp.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// For the Single Unix specification we must define this type here.
+type Gid_t = X__gid_t /* grp.h:37:17 */
+
+// The group structure.
+type Group = struct {
+	Fgr_name     uintptr
+	Fgr_passwd   uintptr
+	Fgr_gid      X__gid_t
+	F__ccgo_pad1 [4]byte
+	Fgr_mem      uintptr
+} /* grp.h:42:1 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/honnef.co/go/netdb/netdb.go b/vendor/modernc.org/libc/honnef.co/go/netdb/netdb.go
index bca62b15..61f80522 100644
--- a/vendor/modernc.org/libc/honnef.co/go/netdb/netdb.go
+++ b/vendor/modernc.org/libc/honnef.co/go/netdb/netdb.go
@@ -751,7 +751,10 @@ func init() {
 		portproto := strings.SplitN(fields[1], "/", 2)
 		port, err := strconv.ParseInt(portproto[0], 10, 32)
 		if err != nil {
-			panic(err)
+			// If we find lines that don't match the expected format we skip over them.
+			// The expected format is <service-name> <port>/<protocol> [aliases ...]
+			// As we're using strings.Fields for splitting the line, failures can happen if the service name field contains white spaces.
+			continue
 		}
 
 		proto := portproto[1]
diff --git a/vendor/modernc.org/libc/langinfo/capi_linux_riscv64.go b/vendor/modernc.org/libc/langinfo/capi_linux_riscv64.go
new file mode 100644
index 00000000..8f1b023f
--- /dev/null
+++ b/vendor/modernc.org/libc/langinfo/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo langinfo/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o langinfo/langinfo_linux_riscv64.go -pkgname langinfo', DO NOT EDIT.
+
+package langinfo
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/langinfo/langinfo_linux_riscv64.go b/vendor/modernc.org/libc/langinfo/langinfo_linux_riscv64.go
new file mode 100644
index 00000000..afd34d3e
--- /dev/null
+++ b/vendor/modernc.org/libc/langinfo/langinfo_linux_riscv64.go
@@ -0,0 +1,1195 @@
+// Code generated by 'ccgo langinfo/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o langinfo/langinfo_linux_riscv64.go -pkgname langinfo', DO NOT EDIT.
+
+package langinfo
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	NL_CAT_LOCALE             = 1
+	NL_SETD                   = 1
+	X_ATFILE_SOURCE           = 1
+	X_BITS_LOCALE_H           = 1
+	X_BITS_TYPES_LOCALE_T_H   = 1
+	X_BITS_TYPES___LOCALE_T_H = 1
+	X_DEFAULT_SOURCE          = 1
+	X_FEATURES_H              = 1
+	X_FILE_OFFSET_BITS        = 64
+	X_LANGINFO_H              = 1
+	X_LP64                    = 1
+	X_NL_TYPES_H              = 1
+	X_POSIX_C_SOURCE          = 200809
+	X_POSIX_SOURCE            = 1
+	X_STDC_PREDEF_H           = 1
+	X_SYS_CDEFS_H             = 1
+	Linux                     = 1
+	Unix                      = 1
+)
+
+// Definition of locale category symbol values.
+//    Copyright (C) 2001-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Construct an `nl_item' value for `nl_langinfo' from a locale category
+//    (LC_*) and an item index within the category.  Some code may depend on
+//    the item values within a category increasing monotonically with the
+//    indices.
+
+// Extract the category and item index from a constructed `nl_item' value.
+
+// Enumeration of locale items that can be queried with `nl_langinfo'.
+const ( /* langinfo.h:41:1: */
+	// LC_TIME category: date and time formatting.
+
+	// Abbreviated days of the week.
+	ABDAY_1 = 131072 // Sun
+	ABDAY_2 = 131073
+	ABDAY_3 = 131074
+	ABDAY_4 = 131075
+	ABDAY_5 = 131076
+	ABDAY_6 = 131077
+	ABDAY_7 = 131078
+
+	// Long-named days of the week.
+	DAY_1 = 131079 // Sunday
+	DAY_2 = 131080 // Monday
+	DAY_3 = 131081 // Tuesday
+	DAY_4 = 131082 // Wednesday
+	DAY_5 = 131083 // Thursday
+	DAY_6 = 131084 // Friday
+	DAY_7 = 131085 // Saturday
+
+	// Abbreviated month names, in the grammatical form used when the month
+	//      is a part of a complete date.
+	ABMON_1  = 131086 // Jan
+	ABMON_2  = 131087
+	ABMON_3  = 131088
+	ABMON_4  = 131089
+	ABMON_5  = 131090
+	ABMON_6  = 131091
+	ABMON_7  = 131092
+	ABMON_8  = 131093
+	ABMON_9  = 131094
+	ABMON_10 = 131095
+	ABMON_11 = 131096
+	ABMON_12 = 131097
+
+	// Long month names, in the grammatical form used when the month
+	//      is a part of a complete date.
+	MON_1  = 131098 // January
+	MON_2  = 131099
+	MON_3  = 131100
+	MON_4  = 131101
+	MON_5  = 131102
+	MON_6  = 131103
+	MON_7  = 131104
+	MON_8  = 131105
+	MON_9  = 131106
+	MON_10 = 131107
+	MON_11 = 131108
+	MON_12 = 131109
+
+	AM_STR = 131110 // Ante meridiem string.
+	PM_STR = 131111 // Post meridiem string.
+
+	D_T_FMT    = 131112 // Date and time format for strftime.
+	D_FMT      = 131113 // Date format for strftime.
+	T_FMT      = 131114 // Time format for strftime.
+	T_FMT_AMPM = 131115 // 12-hour time format for strftime.
+
+	ERA         = 131116 // Alternate era.
+	X__ERA_YEAR = 131117 // Year in alternate era format.
+	ERA_D_FMT   = 131118 // Date in alternate era format.
+	ALT_DIGITS  = 131119 // Alternate symbols for digits.
+	ERA_D_T_FMT = 131120 // Date and time in alternate era format.
+	ERA_T_FMT   = 131121 // Time in alternate era format.
+
+	X_NL_TIME_ERA_NUM_ENTRIES = 131122 // Number entries in the era arrays.
+	X_NL_TIME_ERA_ENTRIES     = 131123 // Structure with era entries in usable form.
+
+	X_NL_WABDAY_1 = 131124 // Sun
+	X_NL_WABDAY_2 = 131125
+	X_NL_WABDAY_3 = 131126
+	X_NL_WABDAY_4 = 131127
+	X_NL_WABDAY_5 = 131128
+	X_NL_WABDAY_6 = 131129
+	X_NL_WABDAY_7 = 131130
+
+	// Long-named days of the week.
+	X_NL_WDAY_1 = 131131 // Sunday
+	X_NL_WDAY_2 = 131132 // Monday
+	X_NL_WDAY_3 = 131133 // Tuesday
+	X_NL_WDAY_4 = 131134 // Wednesday
+	X_NL_WDAY_5 = 131135 // Thursday
+	X_NL_WDAY_6 = 131136 // Friday
+	X_NL_WDAY_7 = 131137 // Saturday
+
+	// Abbreviated month names, in the grammatical form used when the month
+	//      is a part of a complete date.
+	X_NL_WABMON_1  = 131138 // Jan
+	X_NL_WABMON_2  = 131139
+	X_NL_WABMON_3  = 131140
+	X_NL_WABMON_4  = 131141
+	X_NL_WABMON_5  = 131142
+	X_NL_WABMON_6  = 131143
+	X_NL_WABMON_7  = 131144
+	X_NL_WABMON_8  = 131145
+	X_NL_WABMON_9  = 131146
+	X_NL_WABMON_10 = 131147
+	X_NL_WABMON_11 = 131148
+	X_NL_WABMON_12 = 131149
+
+	// Long month names, in the grammatical form used when the month
+	//      is a part of a complete date.
+	X_NL_WMON_1  = 131150 // January
+	X_NL_WMON_2  = 131151
+	X_NL_WMON_3  = 131152
+	X_NL_WMON_4  = 131153
+	X_NL_WMON_5  = 131154
+	X_NL_WMON_6  = 131155
+	X_NL_WMON_7  = 131156
+	X_NL_WMON_8  = 131157
+	X_NL_WMON_9  = 131158
+	X_NL_WMON_10 = 131159
+	X_NL_WMON_11 = 131160
+	X_NL_WMON_12 = 131161
+
+	X_NL_WAM_STR = 131162 // Ante meridiem string.
+	X_NL_WPM_STR = 131163 // Post meridiem string.
+
+	X_NL_WD_T_FMT    = 131164 // Date and time format for strftime.
+	X_NL_WD_FMT      = 131165 // Date format for strftime.
+	X_NL_WT_FMT      = 131166 // Time format for strftime.
+	X_NL_WT_FMT_AMPM = 131167 // 12-hour time format for strftime.
+
+	X_NL_WERA_YEAR    = 131168 // Year in alternate era format.
+	X_NL_WERA_D_FMT   = 131169 // Date in alternate era format.
+	X_NL_WALT_DIGITS  = 131170 // Alternate symbols for digits.
+	X_NL_WERA_D_T_FMT = 131171 // Date and time in alternate era format.
+	X_NL_WERA_T_FMT   = 131172 // Time in alternate era format.
+
+	X_NL_TIME_WEEK_NDAYS    = 131173
+	X_NL_TIME_WEEK_1STDAY   = 131174
+	X_NL_TIME_WEEK_1STWEEK  = 131175
+	X_NL_TIME_FIRST_WEEKDAY = 131176
+	X_NL_TIME_FIRST_WORKDAY = 131177
+	X_NL_TIME_CAL_DIRECTION = 131178
+	X_NL_TIME_TIMEZONE      = 131179
+
+	X_DATE_FMT      = 131180 // strftime format for date.
+	X_NL_W_DATE_FMT = 131181
+
+	X_NL_TIME_CODESET = 131182
+
+	// Long month names, in the grammatical form used when the month
+	//      is named by itself.
+	X__ALTMON_1  = 131183 // January
+	X__ALTMON_2  = 131184
+	X__ALTMON_3  = 131185
+	X__ALTMON_4  = 131186
+	X__ALTMON_5  = 131187
+	X__ALTMON_6  = 131188
+	X__ALTMON_7  = 131189
+	X__ALTMON_8  = 131190
+	X__ALTMON_9  = 131191
+	X__ALTMON_10 = 131192
+	X__ALTMON_11 = 131193
+	X__ALTMON_12 = 131194
+
+	// Long month names, in the grammatical form used when the month
+	//      is named by itself.
+	X_NL_WALTMON_1  = 131195 // January
+	X_NL_WALTMON_2  = 131196
+	X_NL_WALTMON_3  = 131197
+	X_NL_WALTMON_4  = 131198
+	X_NL_WALTMON_5  = 131199
+	X_NL_WALTMON_6  = 131200
+	X_NL_WALTMON_7  = 131201
+	X_NL_WALTMON_8  = 131202
+	X_NL_WALTMON_9  = 131203
+	X_NL_WALTMON_10 = 131204
+	X_NL_WALTMON_11 = 131205
+	X_NL_WALTMON_12 = 131206
+
+	// Abbreviated month names, in the grammatical form used when the month
+	//      is named by itself.
+	X_NL_ABALTMON_1  = 131207 // Jan
+	X_NL_ABALTMON_2  = 131208
+	X_NL_ABALTMON_3  = 131209
+	X_NL_ABALTMON_4  = 131210
+	X_NL_ABALTMON_5  = 131211
+	X_NL_ABALTMON_6  = 131212
+	X_NL_ABALTMON_7  = 131213
+	X_NL_ABALTMON_8  = 131214
+	X_NL_ABALTMON_9  = 131215
+	X_NL_ABALTMON_10 = 131216
+	X_NL_ABALTMON_11 = 131217
+	X_NL_ABALTMON_12 = 131218
+
+	// Abbreviated month names, in the grammatical form used when the month
+	//      is named by itself.
+	X_NL_WABALTMON_1  = 131219 // Jan
+	X_NL_WABALTMON_2  = 131220
+	X_NL_WABALTMON_3  = 131221
+	X_NL_WABALTMON_4  = 131222
+	X_NL_WABALTMON_5  = 131223
+	X_NL_WABALTMON_6  = 131224
+	X_NL_WABALTMON_7  = 131225
+	X_NL_WABALTMON_8  = 131226
+	X_NL_WABALTMON_9  = 131227
+	X_NL_WABALTMON_10 = 131228
+	X_NL_WABALTMON_11 = 131229
+	X_NL_WABALTMON_12 = 131230
+
+	X_NL_NUM_LC_TIME = 131231 // Number of indices in LC_TIME category.
+
+	// LC_COLLATE category: text sorting.
+	//      This information is accessed by the strcoll and strxfrm functions.
+	//      These `nl_langinfo' names are used only internally.
+	X_NL_COLLATE_NRULES           = 196608
+	X_NL_COLLATE_RULESETS         = 196609
+	X_NL_COLLATE_TABLEMB          = 196610
+	X_NL_COLLATE_WEIGHTMB         = 196611
+	X_NL_COLLATE_EXTRAMB          = 196612
+	X_NL_COLLATE_INDIRECTMB       = 196613
+	X_NL_COLLATE_GAP1             = 196614
+	X_NL_COLLATE_GAP2             = 196615
+	X_NL_COLLATE_GAP3             = 196616
+	X_NL_COLLATE_TABLEWC          = 196617
+	X_NL_COLLATE_WEIGHTWC         = 196618
+	X_NL_COLLATE_EXTRAWC          = 196619
+	X_NL_COLLATE_INDIRECTWC       = 196620
+	X_NL_COLLATE_SYMB_HASH_SIZEMB = 196621
+	X_NL_COLLATE_SYMB_TABLEMB     = 196622
+	X_NL_COLLATE_SYMB_EXTRAMB     = 196623
+	X_NL_COLLATE_COLLSEQMB        = 196624
+	X_NL_COLLATE_COLLSEQWC        = 196625
+	X_NL_COLLATE_CODESET          = 196626
+	X_NL_NUM_LC_COLLATE           = 196627
+
+	// LC_CTYPE category: character classification.
+	//      This information is accessed by the functions in <ctype.h>.
+	//      These `nl_langinfo' names are used only internally.
+	X_NL_CTYPE_CLASS                        = 0
+	X_NL_CTYPE_TOUPPER                      = 1
+	X_NL_CTYPE_GAP1                         = 2
+	X_NL_CTYPE_TOLOWER                      = 3
+	X_NL_CTYPE_GAP2                         = 4
+	X_NL_CTYPE_CLASS32                      = 5
+	X_NL_CTYPE_GAP3                         = 6
+	X_NL_CTYPE_GAP4                         = 7
+	X_NL_CTYPE_GAP5                         = 8
+	X_NL_CTYPE_GAP6                         = 9
+	X_NL_CTYPE_CLASS_NAMES                  = 10
+	X_NL_CTYPE_MAP_NAMES                    = 11
+	X_NL_CTYPE_WIDTH                        = 12
+	X_NL_CTYPE_MB_CUR_MAX                   = 13
+	X_NL_CTYPE_CODESET_NAME                 = 14
+	CODESET                                 = 14
+	X_NL_CTYPE_TOUPPER32                    = 15
+	X_NL_CTYPE_TOLOWER32                    = 16
+	X_NL_CTYPE_CLASS_OFFSET                 = 17
+	X_NL_CTYPE_MAP_OFFSET                   = 18
+	X_NL_CTYPE_INDIGITS_MB_LEN              = 19
+	X_NL_CTYPE_INDIGITS0_MB                 = 20
+	X_NL_CTYPE_INDIGITS1_MB                 = 21
+	X_NL_CTYPE_INDIGITS2_MB                 = 22
+	X_NL_CTYPE_INDIGITS3_MB                 = 23
+	X_NL_CTYPE_INDIGITS4_MB                 = 24
+	X_NL_CTYPE_INDIGITS5_MB                 = 25
+	X_NL_CTYPE_INDIGITS6_MB                 = 26
+	X_NL_CTYPE_INDIGITS7_MB                 = 27
+	X_NL_CTYPE_INDIGITS8_MB                 = 28
+	X_NL_CTYPE_INDIGITS9_MB                 = 29
+	X_NL_CTYPE_INDIGITS_WC_LEN              = 30
+	X_NL_CTYPE_INDIGITS0_WC                 = 31
+	X_NL_CTYPE_INDIGITS1_WC                 = 32
+	X_NL_CTYPE_INDIGITS2_WC                 = 33
+	X_NL_CTYPE_INDIGITS3_WC                 = 34
+	X_NL_CTYPE_INDIGITS4_WC                 = 35
+	X_NL_CTYPE_INDIGITS5_WC                 = 36
+	X_NL_CTYPE_INDIGITS6_WC                 = 37
+	X_NL_CTYPE_INDIGITS7_WC                 = 38
+	X_NL_CTYPE_INDIGITS8_WC                 = 39
+	X_NL_CTYPE_INDIGITS9_WC                 = 40
+	X_NL_CTYPE_OUTDIGIT0_MB                 = 41
+	X_NL_CTYPE_OUTDIGIT1_MB                 = 42
+	X_NL_CTYPE_OUTDIGIT2_MB                 = 43
+	X_NL_CTYPE_OUTDIGIT3_MB                 = 44
+	X_NL_CTYPE_OUTDIGIT4_MB                 = 45
+	X_NL_CTYPE_OUTDIGIT5_MB                 = 46
+	X_NL_CTYPE_OUTDIGIT6_MB                 = 47
+	X_NL_CTYPE_OUTDIGIT7_MB                 = 48
+	X_NL_CTYPE_OUTDIGIT8_MB                 = 49
+	X_NL_CTYPE_OUTDIGIT9_MB                 = 50
+	X_NL_CTYPE_OUTDIGIT0_WC                 = 51
+	X_NL_CTYPE_OUTDIGIT1_WC                 = 52
+	X_NL_CTYPE_OUTDIGIT2_WC                 = 53
+	X_NL_CTYPE_OUTDIGIT3_WC                 = 54
+	X_NL_CTYPE_OUTDIGIT4_WC                 = 55
+	X_NL_CTYPE_OUTDIGIT5_WC                 = 56
+	X_NL_CTYPE_OUTDIGIT6_WC                 = 57
+	X_NL_CTYPE_OUTDIGIT7_WC                 = 58
+	X_NL_CTYPE_OUTDIGIT8_WC                 = 59
+	X_NL_CTYPE_OUTDIGIT9_WC                 = 60
+	X_NL_CTYPE_TRANSLIT_TAB_SIZE            = 61
+	X_NL_CTYPE_TRANSLIT_FROM_IDX            = 62
+	X_NL_CTYPE_TRANSLIT_FROM_TBL            = 63
+	X_NL_CTYPE_TRANSLIT_TO_IDX              = 64
+	X_NL_CTYPE_TRANSLIT_TO_TBL              = 65
+	X_NL_CTYPE_TRANSLIT_DEFAULT_MISSING_LEN = 66
+	X_NL_CTYPE_TRANSLIT_DEFAULT_MISSING     = 67
+	X_NL_CTYPE_TRANSLIT_IGNORE_LEN          = 68
+	X_NL_CTYPE_TRANSLIT_IGNORE              = 69
+	X_NL_CTYPE_MAP_TO_NONASCII              = 70
+	X_NL_CTYPE_NONASCII_CASE                = 71
+	X_NL_CTYPE_EXTRA_MAP_1                  = 72
+	X_NL_CTYPE_EXTRA_MAP_2                  = 73
+	X_NL_CTYPE_EXTRA_MAP_3                  = 74
+	X_NL_CTYPE_EXTRA_MAP_4                  = 75
+	X_NL_CTYPE_EXTRA_MAP_5                  = 76
+	X_NL_CTYPE_EXTRA_MAP_6                  = 77
+	X_NL_CTYPE_EXTRA_MAP_7                  = 78
+	X_NL_CTYPE_EXTRA_MAP_8                  = 79
+	X_NL_CTYPE_EXTRA_MAP_9                  = 80
+	X_NL_CTYPE_EXTRA_MAP_10                 = 81
+	X_NL_CTYPE_EXTRA_MAP_11                 = 82
+	X_NL_CTYPE_EXTRA_MAP_12                 = 83
+	X_NL_CTYPE_EXTRA_MAP_13                 = 84
+	X_NL_CTYPE_EXTRA_MAP_14                 = 85
+	X_NL_NUM_LC_CTYPE                       = 86
+
+	// LC_MONETARY category: formatting of monetary quantities.
+	//      These items each correspond to a member of `struct lconv',
+	//      defined in <locale.h>.
+	X__INT_CURR_SYMBOL                   = 262144
+	X__CURRENCY_SYMBOL                   = 262145
+	X__MON_DECIMAL_POINT                 = 262146
+	X__MON_THOUSANDS_SEP                 = 262147
+	X__MON_GROUPING                      = 262148
+	X__POSITIVE_SIGN                     = 262149
+	X__NEGATIVE_SIGN                     = 262150
+	X__INT_FRAC_DIGITS                   = 262151
+	X__FRAC_DIGITS                       = 262152
+	X__P_CS_PRECEDES                     = 262153
+	X__P_SEP_BY_SPACE                    = 262154
+	X__N_CS_PRECEDES                     = 262155
+	X__N_SEP_BY_SPACE                    = 262156
+	X__P_SIGN_POSN                       = 262157
+	X__N_SIGN_POSN                       = 262158
+	X_NL_MONETARY_CRNCYSTR               = 262159
+	X__INT_P_CS_PRECEDES                 = 262160
+	X__INT_P_SEP_BY_SPACE                = 262161
+	X__INT_N_CS_PRECEDES                 = 262162
+	X__INT_N_SEP_BY_SPACE                = 262163
+	X__INT_P_SIGN_POSN                   = 262164
+	X__INT_N_SIGN_POSN                   = 262165
+	X_NL_MONETARY_DUO_INT_CURR_SYMBOL    = 262166
+	X_NL_MONETARY_DUO_CURRENCY_SYMBOL    = 262167
+	X_NL_MONETARY_DUO_INT_FRAC_DIGITS    = 262168
+	X_NL_MONETARY_DUO_FRAC_DIGITS        = 262169
+	X_NL_MONETARY_DUO_P_CS_PRECEDES      = 262170
+	X_NL_MONETARY_DUO_P_SEP_BY_SPACE     = 262171
+	X_NL_MONETARY_DUO_N_CS_PRECEDES      = 262172
+	X_NL_MONETARY_DUO_N_SEP_BY_SPACE     = 262173
+	X_NL_MONETARY_DUO_INT_P_CS_PRECEDES  = 262174
+	X_NL_MONETARY_DUO_INT_P_SEP_BY_SPACE = 262175
+	X_NL_MONETARY_DUO_INT_N_CS_PRECEDES  = 262176
+	X_NL_MONETARY_DUO_INT_N_SEP_BY_SPACE = 262177
+	X_NL_MONETARY_DUO_P_SIGN_POSN        = 262178
+	X_NL_MONETARY_DUO_N_SIGN_POSN        = 262179
+	X_NL_MONETARY_DUO_INT_P_SIGN_POSN    = 262180
+	X_NL_MONETARY_DUO_INT_N_SIGN_POSN    = 262181
+	X_NL_MONETARY_UNO_VALID_FROM         = 262182
+	X_NL_MONETARY_UNO_VALID_TO           = 262183
+	X_NL_MONETARY_DUO_VALID_FROM         = 262184
+	X_NL_MONETARY_DUO_VALID_TO           = 262185
+	X_NL_MONETARY_CONVERSION_RATE        = 262186
+	X_NL_MONETARY_DECIMAL_POINT_WC       = 262187
+	X_NL_MONETARY_THOUSANDS_SEP_WC       = 262188
+	X_NL_MONETARY_CODESET                = 262189
+	X_NL_NUM_LC_MONETARY                 = 262190
+
+	// LC_NUMERIC category: formatting of numbers.
+	//      These also correspond to members of `struct lconv'; see <locale.h>.
+	X__DECIMAL_POINT              = 65536
+	RADIXCHAR                     = 65536
+	X__THOUSANDS_SEP              = 65537
+	THOUSEP                       = 65537
+	X__GROUPING                   = 65538
+	X_NL_NUMERIC_DECIMAL_POINT_WC = 65539
+	X_NL_NUMERIC_THOUSANDS_SEP_WC = 65540
+	X_NL_NUMERIC_CODESET          = 65541
+	X_NL_NUM_LC_NUMERIC           = 65542
+
+	X__YESEXPR            = 327680 // Regex matching ``yes'' input.
+	X__NOEXPR             = 327681 // Regex matching ``no'' input.
+	X__YESSTR             = 327682 // Output string for ``yes''.
+	X__NOSTR              = 327683 // Output string for ``no''.
+	X_NL_MESSAGES_CODESET = 327684
+	X_NL_NUM_LC_MESSAGES  = 327685
+
+	X_NL_PAPER_HEIGHT  = 458752
+	X_NL_PAPER_WIDTH   = 458753
+	X_NL_PAPER_CODESET = 458754
+	X_NL_NUM_LC_PAPER  = 458755
+
+	X_NL_NAME_NAME_FMT  = 524288
+	X_NL_NAME_NAME_GEN  = 524289
+	X_NL_NAME_NAME_MR   = 524290
+	X_NL_NAME_NAME_MRS  = 524291
+	X_NL_NAME_NAME_MISS = 524292
+	X_NL_NAME_NAME_MS   = 524293
+	X_NL_NAME_CODESET   = 524294
+	X_NL_NUM_LC_NAME    = 524295
+
+	X_NL_ADDRESS_POSTAL_FMT   = 589824
+	X_NL_ADDRESS_COUNTRY_NAME = 589825
+	X_NL_ADDRESS_COUNTRY_POST = 589826
+	X_NL_ADDRESS_COUNTRY_AB2  = 589827
+	X_NL_ADDRESS_COUNTRY_AB3  = 589828
+	X_NL_ADDRESS_COUNTRY_CAR  = 589829
+	X_NL_ADDRESS_COUNTRY_NUM  = 589830
+	X_NL_ADDRESS_COUNTRY_ISBN = 589831
+	X_NL_ADDRESS_LANG_NAME    = 589832
+	X_NL_ADDRESS_LANG_AB      = 589833
+	X_NL_ADDRESS_LANG_TERM    = 589834
+	X_NL_ADDRESS_LANG_LIB     = 589835
+	X_NL_ADDRESS_CODESET      = 589836
+	X_NL_NUM_LC_ADDRESS       = 589837
+
+	X_NL_TELEPHONE_TEL_INT_FMT = 655360
+	X_NL_TELEPHONE_TEL_DOM_FMT = 655361
+	X_NL_TELEPHONE_INT_SELECT  = 655362
+	X_NL_TELEPHONE_INT_PREFIX  = 655363
+	X_NL_TELEPHONE_CODESET     = 655364
+	X_NL_NUM_LC_TELEPHONE      = 655365
+
+	X_NL_MEASUREMENT_MEASUREMENT = 720896
+	X_NL_MEASUREMENT_CODESET     = 720897
+	X_NL_NUM_LC_MEASUREMENT      = 720898
+
+	X_NL_IDENTIFICATION_TITLE        = 786432
+	X_NL_IDENTIFICATION_SOURCE       = 786433
+	X_NL_IDENTIFICATION_ADDRESS      = 786434
+	X_NL_IDENTIFICATION_CONTACT      = 786435
+	X_NL_IDENTIFICATION_EMAIL        = 786436
+	X_NL_IDENTIFICATION_TEL          = 786437
+	X_NL_IDENTIFICATION_FAX          = 786438
+	X_NL_IDENTIFICATION_LANGUAGE     = 786439
+	X_NL_IDENTIFICATION_TERRITORY    = 786440
+	X_NL_IDENTIFICATION_AUDIENCE     = 786441
+	X_NL_IDENTIFICATION_APPLICATION  = 786442
+	X_NL_IDENTIFICATION_ABBREVIATION = 786443
+	X_NL_IDENTIFICATION_REVISION     = 786444
+	X_NL_IDENTIFICATION_DATE         = 786445
+	X_NL_IDENTIFICATION_CATEGORY     = 786446
+	X_NL_IDENTIFICATION_CODESET      = 786447
+	X_NL_NUM_LC_IDENTIFICATION       = 786448
+
+	// This marks the highest value used.
+	X_NL_NUM = 786449
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Access to locale-dependent parameters.
+//    Copyright (C) 1995-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get the type definition.
+// Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// The default message set used by the gencat program.
+
+// Value for FLAG parameter of `catgets' to say we want XPG4 compliance.
+
+// Message catalog descriptor type.
+type Nl_catd = uintptr /* nl_types.h:33:14 */
+
+// Type used by `nl_langinfo'.
+type Nl_item = int32 /* nl_types.h:36:13 */
+
+// POSIX.1-2008 extended locale interface (see locale.h).
+// Definition of locale_t.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition of struct __locale_struct and __locale_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// POSIX.1-2008: the locale_t type, representing a locale context
+//    (implementation-namespace version).  This type should be treated
+//    as opaque by applications; some details are exposed for the sake of
+//    efficiency in e.g. ctype functions.
+
+type X__locale_struct = struct {
+	F__locales       [13]uintptr
+	F__ctype_b       uintptr
+	F__ctype_tolower uintptr
+	F__ctype_toupper uintptr
+	F__names         [13]uintptr
+} /* __locale_t.h:28:1 */
+
+type X__locale_t = uintptr /* __locale_t.h:42:32 */
+
+type Locale_t = X__locale_t /* locale_t.h:24:20 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/libc64.go b/vendor/modernc.org/libc/libc64.go
index ff2e0e3d..28a958b9 100644
--- a/vendor/modernc.org/libc/libc64.go
+++ b/vendor/modernc.org/libc/libc64.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build amd64 || arm64 || s390x
-// +build amd64 arm64 s390x
+//go:build amd64 || arm64 || riscv64 || s390x
+// +build amd64 arm64 riscv64 s390x
 
 package libc // import "modernc.org/libc"
 
diff --git a/vendor/modernc.org/libc/libc_linux.go b/vendor/modernc.org/libc/libc_linux.go
index d594ab4a..0989c6d5 100644
--- a/vendor/modernc.org/libc/libc_linux.go
+++ b/vendor/modernc.org/libc/libc_linux.go
@@ -200,6 +200,18 @@ func Xopen64(t *TLS, pathname uintptr, flags int32, args uintptr) int32 {
 	return int32(n)
 }
 
+// int openat(int dirfd, const char *pathname, int flags, mode_t mode);
+func Xopenat(t *TLS, dirfd int32, pathname uintptr, flags int32, mode types.Mode_t) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	fd, _, err := unix.Syscall6(unix.SYS_OPENAT, uintptr(dirfd), pathname, uintptr(flags), uintptr(mode), 0, 0)
+	if err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return int32(fd)
+}
+
 // off_t lseek(int fd, off_t offset, int whence);
 func Xlseek(t *TLS, fd int32, offset types.Off_t, whence int32) types.Off_t {
 	return types.Off_t(Xlseek64(t, fd, offset, whence))
@@ -347,6 +359,29 @@ func Xfchmod(t *TLS, fd int32, mode types.Mode_t) int32 {
 	return 0
 }
 
+// int fchmodat(int dirfd, const char *pathname, mode_t mode, int flags);
+func Xfchmodat(t *TLS, dirfd int32, pathname uintptr, mode types.Mode_t, flags int32) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	// Linux fchmodat doesn't support the flags parameter. Mimick glibc's behavior
+	// and check the flags. Otherwise the mode would be applied to the symlink
+	// destination which is not what the user expects.
+	if flags&^unix.AT_SYMLINK_NOFOLLOW != 0 {
+		t.setErrno(unix.EINVAL)
+		return -1
+	} else if flags&unix.AT_SYMLINK_NOFOLLOW != 0 {
+		t.setErrno(unix.EOPNOTSUPP)
+		return -1
+	}
+
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall(unix.SYS_FCHMODAT, uintptr(dirfd), pathname, uintptr(mode)); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
 // int fchown(int fd, uid_t owner, gid_t group);
 func Xfchown(t *TLS, fd int32, owner types.Uid_t, group types.Gid_t) int32 {
 	if _, _, err := unix.Syscall(unix.SYS_FCHOWN, uintptr(fd), uintptr(owner), uintptr(group)); err != 0 {
@@ -1421,3 +1456,136 @@ func Xuuid_parse(t *TLS, in uintptr, uu uintptr) int32 {
 	copy((*RawMem)(unsafe.Pointer(uu))[:unsafe.Sizeof(uuid.Uuid_t{})], r[:])
 	return 0
 }
+
+// int mkdirat(int dirfd, const char *pathname, mode_t mode);
+func Xmkdirat(t *TLS, dirfd int32, pathname uintptr, mode types.Mode_t) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall(unix.SYS_MKDIRAT, uintptr(dirfd), pathname, uintptr(mode)); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int symlinkat(const char *target, int newdirfd, const char *linkpath);
+func Xsymlinkat(t *TLS, target uintptr, newdirfd int32, linkpath uintptr) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall(unix.SYS_SYMLINKAT, target, uintptr(newdirfd), linkpath); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int utimensat(int dirfd, const char *pathname, const struct timespec times[2], int flags);
+func Xutimensat(t *TLS, dirfd int32, pathname, times uintptr, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall6(unix.SYS_UTIMENSAT, uintptr(dirfd), pathname, times, uintptr(flags), 0, 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int unlinkat(int dirfd, const char *pathname, int flags);
+func Xunlinkat(t *TLS, dirfd int32, pathname uintptr, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall(unix.SYS_UNLINKAT, uintptr(dirfd), pathname, uintptr(flags)); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int faccessat(int dirfd, const char *pathname, int mode, int flags);
+func Xfaccessat(t *TLS, dirfd int32, pathname uintptr, mode, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall(unix.SYS_FACCESSAT, uintptr(dirfd), pathname, uintptr(mode)); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int renameat2(int olddirfd, const char *oldpath,	int newdirfd, const char *newpath, unsigned int flags);
+func Xrenameat2(t *TLS, olddirfd int32, oldpath uintptr, newdirfd int32, newpath uintptr, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall6(unix.SYS_RENAMEAT2, uintptr(olddirfd), oldpath, uintptr(newdirfd), newpath, uintptr(flags), 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int mknodat(int dirfd, const char *pathname, mode_t mode, dev_t dev);
+func Xmknodat(t *TLS, dirfd int32, pathname uintptr, mode types.Mode_t, dev types.Dev_t) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall6(unix.SYS_MKNODAT, uintptr(dirfd), pathname, uintptr(mode), uintptr(dev), 0, 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int fchownat(int dirfd, const char *pathname, uid_t owner, gid_t group, int flags);
+func Xfchownat(t *TLS, dirfd int32, pathname uintptr, uid types.Uid_t, gid types.Gid_t, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall6(unix.SYS_FCHOWNAT, uintptr(dirfd), pathname, uintptr(uid), uintptr(gid), uintptr(flags), 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int linkat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath, int flags);
+func Xlinkat(t *TLS, olddirfd int32, oldpath uintptr, newdirfd int32, newpath uintptr, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall6(unix.SYS_LINKAT, uintptr(olddirfd), oldpath, uintptr(newdirfd), newpath, uintptr(flags), 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int pipe2(int pipefd[2], int flags);
+func Xpipe2(t *TLS, pipefd uintptr, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall(unix.SYS_PIPE2, pipefd, uintptr(flags), 0); err != 0 {
+		t.setErrno(t)
+		return -1
+	}
+
+	return 0
+}
+
+// int dup3(int oldfd, int newfd, int flags);
+func Xdup3(t *TLS, oldfd int32, newfd int32, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	if _, _, err := unix.Syscall(unix.SYS_DUP3, uintptr(oldfd), uintptr(newfd), uintptr(flags)); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// ssize_t readlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz);
+func Xreadlinkat(t *TLS, dirfd int32, pathname, buf uintptr, bufsiz types.Size_t) types.Ssize_t {
+	// From golang.org/x/sys/unix/zsyscall_linux.go
+	n, _, err := unix.Syscall6(unix.SYS_READLINKAT, uintptr(dirfd), pathname, buf, uintptr(bufsiz), 0, 0)
+	if err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return types.Ssize_t(n)
+}
diff --git a/vendor/modernc.org/libc/libc_linux_riscv64.go b/vendor/modernc.org/libc/libc_linux_riscv64.go
new file mode 100644
index 00000000..0efb296a
--- /dev/null
+++ b/vendor/modernc.org/libc/libc_linux_riscv64.go
@@ -0,0 +1,413 @@
+// Copyright 2020 The Libc Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package libc // import "modernc.org/libc"
+
+import (
+	"os"
+	"strings"
+	"unicode"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+	"modernc.org/libc/errno"
+	"modernc.org/libc/fcntl"
+	"modernc.org/libc/signal"
+	"modernc.org/libc/sys/types"
+	"modernc.org/libc/utime"
+	"modernc.org/libc/wctype"
+)
+
+// int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
+func Xsigaction(t *TLS, signum int32, act, oldact uintptr) int32 {
+	// 	musl/arch/x86_64/ksigaction.h
+	//
+	//	struct k_sigaction {
+	//		void (*handler)(int);
+	//		unsigned long flags;
+	//		void (*restorer)(void);
+	//		unsigned mask[2];
+	//	};
+	type k_sigaction struct {
+		handler  uintptr
+		flags    ulong
+		restorer uintptr
+		mask     [2]uint32
+	}
+
+	var kact, koldact uintptr
+	if act != 0 {
+		sz := int(unsafe.Sizeof(k_sigaction{}))
+		kact = t.Alloc(sz)
+		defer t.Free(sz)
+		*(*k_sigaction)(unsafe.Pointer(kact)) = k_sigaction{
+			handler:  (*signal.Sigaction)(unsafe.Pointer(act)).F__sigaction_handler.Fsa_handler,
+			flags:    ulong((*signal.Sigaction)(unsafe.Pointer(act)).Fsa_flags),
+			restorer: (*signal.Sigaction)(unsafe.Pointer(act)).Fsa_restorer,
+		}
+		Xmemcpy(t, kact+unsafe.Offsetof(k_sigaction{}.mask), act+unsafe.Offsetof(signal.Sigaction{}.Fsa_mask), types.Size_t(unsafe.Sizeof(k_sigaction{}.mask)))
+	}
+	if oldact != 0 {
+		panic(todo(""))
+	}
+
+	if _, _, err := unix.Syscall6(unix.SYS_RT_SIGACTION, uintptr(signum), kact, koldact, unsafe.Sizeof(k_sigaction{}.mask), 0, 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	if oldact != 0 {
+		panic(todo(""))
+	}
+
+	return 0
+}
+
+// int fcntl(int fd, int cmd, ... /* arg */ );
+func Xfcntl64(t *TLS, fd, cmd int32, args uintptr) int32 {
+	var arg uintptr
+	if args != 0 {
+		arg = *(*uintptr)(unsafe.Pointer(args))
+	}
+	if cmd == fcntl.F_SETFL {
+		arg |= unix.O_LARGEFILE
+	}
+	n, _, err := unix.Syscall(unix.SYS_FCNTL, uintptr(fd), uintptr(cmd), arg)
+	if err != 0 {
+		// if dmesgs {
+		// 	dmesg("%v: fd %v cmd %v", origin(1), fcntlCmdStr(fd), cmd)
+		// }
+		t.setErrno(err)
+		return -1
+	}
+
+	// if dmesgs {
+	// 	dmesg("%v: %d %s %#x: %d", origin(1), fd, fcntlCmdStr(cmd), arg, n)
+	// }
+	return int32(n)
+}
+
+// int fstatat(int dirfd, const char *pathname, struct stat *statbuf, int flags);
+func Xfstatat(t *TLS, dirfd int32, pathname, statbuf uintptr, flags int32) int32 {
+	// From golang.org/x/sys/unix/zsyscall_linux_riscv64.go
+	if _, _, err := unix.Syscall6(unix.SYS_FSTATAT, uintptr(dirfd), pathname, statbuf, uintptr(flags), 0, 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int lstat(const char *pathname, struct stat *statbuf);
+func Xlstat64(t *TLS, pathname, statbuf uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux_riscv64.go
+	return Xfstatat(t, unix.AT_FDCWD, pathname, statbuf, unix.AT_SYMLINK_NOFOLLOW)
+}
+
+// int stat(const char *pathname, struct stat *statbuf);
+func Xstat64(t *TLS, pathname, statbuf uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux_riscv64.go
+	return Xfstatat(t, unix.AT_FDCWD, pathname, statbuf, 0)
+}
+
+// int fstat(int fd, struct stat *statbuf);
+func Xfstat64(t *TLS, fd int32, statbuf uintptr) int32 {
+	if _, _, err := unix.Syscall(unix.SYS_FSTAT, uintptr(fd), statbuf, 0); err != 0 {
+		// if dmesgs {
+		// 	dmesg("%v: fd %d: %v", origin(1), fd, err)
+		// }
+		t.setErrno(err)
+		return -1
+	}
+
+	// if dmesgs {
+	// 	dmesg("%v: %d size %#x: ok\n%+v", origin(1), fd, (*stat.Stat)(unsafe.Pointer(statbuf)).Fst_size, (*stat.Stat)(unsafe.Pointer(statbuf)))
+	// }
+	return 0
+}
+
+func Xmmap(t *TLS, addr uintptr, length types.Size_t, prot, flags, fd int32, offset types.Off_t) uintptr {
+	return Xmmap64(t, addr, length, prot, flags, fd, offset)
+}
+
+// void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
+func Xmmap64(t *TLS, addr uintptr, length types.Size_t, prot, flags, fd int32, offset types.Off_t) uintptr {
+	data, _, err := unix.Syscall6(unix.SYS_MMAP, addr, uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset))
+	if err != 0 {
+		// if dmesgs {
+		// 	dmesg("%v: %v", origin(1), err)
+		// }
+		t.setErrno(err)
+		return ^uintptr(0) // (void*)-1
+	}
+
+	// if dmesgs {
+	// 	dmesg("%v: %#x", origin(1), data)
+	// }
+	return data
+}
+
+// void *mremap(void *old_address, size_t old_size, size_t new_size, int flags, ... /* void *new_address */);
+func Xmremap(t *TLS, old_address uintptr, old_size, new_size types.Size_t, flags int32, args uintptr) uintptr {
+	var arg uintptr
+	if args != 0 {
+		arg = *(*uintptr)(unsafe.Pointer(args))
+	}
+	data, _, err := unix.Syscall6(unix.SYS_MREMAP, old_address, uintptr(old_size), uintptr(new_size), uintptr(flags), arg, 0)
+	if err != 0 {
+		// if dmesgs {
+		// 	dmesg("%v: %v", origin(1), err)
+		// }
+		t.setErrno(err)
+		return ^uintptr(0) // (void*)-1
+	}
+
+	// if dmesgs {
+	// 	dmesg("%v: %#x", origin(1), data)
+	// }
+	return data
+}
+
+// int ftruncate(int fd, off_t length);
+func Xftruncate64(t *TLS, fd int32, length types.Off_t) int32 {
+	if _, _, err := unix.Syscall(unix.SYS_FTRUNCATE, uintptr(fd), uintptr(length), 0); err != 0 {
+		// if dmesgs {
+		// 	dmesg("%v: fd %d: %v", origin(1), fd, err)
+		// }
+		t.setErrno(err)
+		return -1
+	}
+
+	// if dmesgs {
+	// 	dmesg("%v: %d %#x: ok", origin(1), fd, length)
+	// }
+	return 0
+}
+
+// off64_t lseek64(int fd, off64_t offset, int whence);
+func Xlseek64(t *TLS, fd int32, offset types.Off_t, whence int32) types.Off_t {
+	n, _, err := unix.Syscall(unix.SYS_LSEEK, uintptr(fd), uintptr(offset), uintptr(whence))
+	if err != 0 {
+		// if dmesgs {
+		// 	dmesg("%v: fd %v, off %#x, whence %v: %v", origin(1), fd, offset, whenceStr(whence), err)
+		// }
+		t.setErrno(err)
+		return -1
+	}
+
+	// if dmesgs {
+	// 	dmesg("%v: fd %v, off %#x, whence %v: %#x", origin(1), fd, offset, whenceStr(whence), n)
+	// }
+	return types.Off_t(n)
+}
+
+// From man utime executed on linux/riscv64:
+//
+// The utimbuf structure is:
+//
+//            struct utimbuf {
+//                time_t actime;       /* access time */
+//                time_t modtime;      /* modification time */
+//            };
+
+type utimbuf struct {
+	actime  utime.Time_t
+	modtime utime.Time_t
+}
+
+// int utime(const char *filename, const struct utimbuf *times);
+func Xutime(t *TLS, filename, times uintptr) int32 {
+	if times == 0 {
+		return Xutimes(t, filename, 0)
+	}
+
+	n := int(unsafe.Sizeof([2]types.Timeval{}))
+	p := t.Alloc(n)
+	defer t.Free(n)
+	*(*[2]types.Timeval)(unsafe.Pointer(p)) = [2]types.Timeval{
+		{Ftv_sec: (*utimbuf)(unsafe.Pointer(times)).actime},
+		{Ftv_sec: (*utimbuf)(unsafe.Pointer(times)).modtime},
+	}
+	return Xutimes(t, filename, p)
+}
+
+// unsigned int alarm(unsigned int seconds);
+func Xalarm(t *TLS, seconds uint32) uint32 {
+	panic(todo(""))
+	// No alarm syscall on linux/riscv64. And cannot implement with setitimer as in musl,
+	// because of missing defination to constant ITIMER_REAL in types_linux_riscv64.go.
+}
+
+// time_t time(time_t *tloc);
+func Xtime(t *TLS, tloc uintptr) types.Time_t {
+	// From golang.org/x/sys/unix/syscall_linux_riscv64.go
+	var tv types.Timeval
+	if err := Xgettimeofday(t, uintptr(unsafe.Pointer(&tv)), 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	if tloc != 0 {
+		*(*types.Time_t)(unsafe.Pointer(tloc)) = tv.Ftv_sec
+	}
+	return tv.Ftv_sec
+}
+
+// int getrlimit(int resource, struct rlimit *rlim);
+func Xgetrlimit64(t *TLS, resource int32, rlim uintptr) int32 {
+	if _, _, err := unix.Syscall(unix.SYS_GETRLIMIT, uintptr(resource), uintptr(rlim), 0); err != 0 {
+		t.setErrno(err)
+		return -1
+	}
+
+	return 0
+}
+
+// int mkdir(const char *path, mode_t mode);
+func Xmkdir(t *TLS, path uintptr, mode types.Mode_t) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xmkdirat(t, unix.AT_FDCWD, path, mode)
+}
+
+// int symlink(const char *target, const char *linkpath);
+func Xsymlink(t *TLS, target, linkpath uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xsymlinkat(t, target, unix.AT_FDCWD, linkpath)
+}
+
+// int chmod(const char *pathname, mode_t mode)
+func Xchmod(t *TLS, pathname uintptr, mode types.Mode_t) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xfchmodat(t, unix.AT_FDCWD, pathname, mode, 0)
+}
+
+// int utimes(const char *filename, const struct timeval times[2]);
+func Xutimes(t *TLS, filename, times uintptr) int32 {
+	return Xutimensat(t, unix.AT_FDCWD, filename, times, 0)
+}
+
+// int unlink(const char *pathname);
+func Xunlink(t *TLS, pathname uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xunlinkat(t, unix.AT_FDCWD, pathname, 0)
+}
+
+// int access(const char *pathname, int mode);
+func Xaccess(t *TLS, pathname uintptr, mode int32) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xfaccessat(t, unix.AT_FDCWD, pathname, mode, 0)
+}
+
+// int rmdir(const char *pathname);
+func Xrmdir(t *TLS, pathname uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xunlinkat(t, unix.AT_FDCWD, pathname, unix.AT_REMOVEDIR)
+}
+
+// int rename(const char *oldpath, const char *newpath);
+func Xrename(t *TLS, oldpath, newpath uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xrenameat(t, unix.AT_FDCWD, oldpath, unix.AT_FDCWD, newpath)
+}
+
+// int renameat(int olddirfd, const char *oldpath,	int newdirfd, const char *newpath);
+func Xrenameat(t *TLS, olddirfd int32, oldpath uintptr, newdirfd int32, newpath uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux_riscv64.go
+	return Xrenameat2(t, olddirfd, oldpath, newdirfd, newpath, 0)
+}
+
+// int mknod(const char *pathname, mode_t mode, dev_t dev);
+func Xmknod(t *TLS, pathname uintptr, mode types.Mode_t, dev types.Dev_t) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xmknodat(t, unix.AT_FDCWD, pathname, mode, dev)
+}
+
+// int chown(const char *pathname, uid_t owner, gid_t group);
+func Xchown(t *TLS, pathname uintptr, owner types.Uid_t, group types.Gid_t) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xfchownat(t, unix.AT_FDCWD, pathname, owner, group, 0)
+}
+
+// int link(const char *oldpath, const char *newpath);
+func Xlink(t *TLS, oldpath, newpath uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xlinkat(t, unix.AT_FDCWD, oldpath, unix.AT_FDCWD, newpath, 0)
+}
+
+// int pipe(int pipefd[2]);
+func Xpipe(t *TLS, pipefd uintptr) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xpipe2(t, pipefd, 0)
+}
+
+// int dup2(int oldfd, int newfd);
+func Xdup2(t *TLS, oldfd, newfd int32) int32 {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xdup3(t, oldfd, newfd, 0)
+}
+
+// ssize_t readlink(const char *restrict path, char *restrict buf, size_t bufsize);
+func Xreadlink(t *TLS, path, buf uintptr, bufsize types.Size_t) types.Ssize_t {
+	// From golang.org/x/sys/unix/syscall_linux.go
+	return Xreadlinkat(t, unix.AT_FDCWD, path, buf, bufsize)
+}
+
+// FILE *fopen64(const char *pathname, const char *mode);
+func Xfopen64(t *TLS, pathname, mode uintptr) uintptr {
+	m := strings.ReplaceAll(GoString(mode), "b", "")
+	var flags int
+	switch m {
+	case "r":
+		flags = os.O_RDONLY
+	case "r+":
+		flags = os.O_RDWR
+	case "w":
+		flags = os.O_WRONLY | os.O_CREATE | os.O_TRUNC
+	case "w+":
+		flags = os.O_RDWR | os.O_CREATE | os.O_TRUNC
+	case "a":
+		flags = os.O_WRONLY | os.O_CREATE | os.O_APPEND
+	case "a+":
+		flags = os.O_RDWR | os.O_CREATE | os.O_APPEND
+	default:
+		panic(m)
+	}
+	//TODO- flags |= fcntl.O_LARGEFILE
+
+	// From golang.org/x/sys/unix/syscall_linux.go
+	fd := Xopenat(t, unix.AT_FDCWD, pathname, int32(flags|unix.O_LARGEFILE), 0666)
+	if fd == -1 {
+		return 0
+	}
+
+	if p := newFile(t, fd); p != 0 {
+		return p
+	}
+
+	Xclose(t, fd)
+	t.setErrno(errno.ENOMEM)
+	return 0
+}
+
+// int iswspace(wint_t wc);
+func Xiswspace(t *TLS, wc wctype.Wint_t) int32 {
+	return Bool32(unicode.IsSpace(rune(wc)))
+}
+
+// int iswalnum(wint_t wc);
+func Xiswalnum(t *TLS, wc wctype.Wint_t) int32 {
+	return Bool32(unicode.IsLetter(rune(wc)) || unicode.IsNumber(rune(wc)))
+}
+
+func __syscall1(t *TLS, trap, p1 long) long {
+	return __syscall(unix.Syscall(uintptr(trap), uintptr(p1), 0, 0))
+}
+
+func __syscall3(t *TLS, trap, p1, p2, p3 long) long {
+	return __syscall(unix.Syscall(uintptr(trap), uintptr(p1), uintptr(p2), uintptr(p3)))
+}
+
+func __syscall4(t *TLS, trap, p1, p2, p3, p4 long) long {
+	return __syscall(unix.Syscall6(uintptr(trap), uintptr(p1), uintptr(p2), uintptr(p3), uintptr(p4), 0, 0))
+}
diff --git a/vendor/modernc.org/libc/limits/capi_linux_riscv64.go b/vendor/modernc.org/libc/limits/capi_linux_riscv64.go
new file mode 100644
index 00000000..0706f0d6
--- /dev/null
+++ b/vendor/modernc.org/libc/limits/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo limits/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o limits/limits_linux_riscv64.go -pkgname limits', DO NOT EDIT.
+
+package limits
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/limits/limits_linux_riscv64.go b/vendor/modernc.org/libc/limits/limits_linux_riscv64.go
new file mode 100644
index 00000000..2a46b72f
--- /dev/null
+++ b/vendor/modernc.org/libc/limits/limits_linux_riscv64.go
@@ -0,0 +1,1153 @@
+// Code generated by 'ccgo limits/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o limits/limits_linux_riscv64.go -pkgname limits', DO NOT EDIT.
+
+package limits
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	AIO_PRIO_DELTA_MAX                   = 20
+	BC_BASE_MAX                          = 99
+	BC_DIM_MAX                           = 2048
+	BC_SCALE_MAX                         = 99
+	BC_STRING_MAX                        = 1000
+	CHARCLASS_NAME_MAX                   = 2048
+	CHAR_BIT                             = 8
+	CHAR_MAX                             = 255
+	CHAR_MIN                             = 0
+	COLL_WEIGHTS_MAX                     = 255
+	DELAYTIMER_MAX                       = 2147483647
+	EXPR_NEST_MAX                        = 32
+	HOST_NAME_MAX                        = 64
+	INT_MAX                              = 2147483647
+	INT_MIN                              = -2147483648
+	LINE_MAX                             = 2048
+	LLONG_MAX                            = 9223372036854775807
+	LLONG_MIN                            = -9223372036854775808
+	LOGIN_NAME_MAX                       = 256
+	LONG_MAX                             = 9223372036854775807
+	LONG_MIN                             = -9223372036854775808
+	MAX_CANON                            = 255
+	MAX_INPUT                            = 255
+	MB_LEN_MAX                           = 16
+	MQ_PRIO_MAX                          = 32768
+	NAME_MAX                             = 255
+	NGROUPS_MAX                          = 65536
+	PATH_MAX                             = 4096
+	PIPE_BUF                             = 4096
+	PTHREAD_DESTRUCTOR_ITERATIONS        = 4
+	PTHREAD_KEYS_MAX                     = 1024
+	PTHREAD_STACK_MIN                    = 16384
+	RE_DUP_MAX                           = 32767
+	RTSIG_MAX                            = 32
+	SCHAR_MAX                            = 127
+	SCHAR_MIN                            = -128
+	SEM_VALUE_MAX                        = 2147483647
+	SHRT_MAX                             = 32767
+	SHRT_MIN                             = -32768
+	SSIZE_MAX                            = 9223372036854775807
+	TTY_NAME_MAX                         = 32
+	UCHAR_MAX                            = 255
+	UINT_MAX                             = 4294967295
+	ULLONG_MAX                           = 18446744073709551615
+	ULONG_MAX                            = 18446744073709551615
+	USHRT_MAX                            = 65535
+	XATTR_LIST_MAX                       = 65536
+	XATTR_NAME_MAX                       = 255
+	XATTR_SIZE_MAX                       = 65536
+	X_ATFILE_SOURCE                      = 1
+	X_BITS_POSIX1_LIM_H                  = 1
+	X_BITS_POSIX2_LIM_H                  = 1
+	X_DEFAULT_SOURCE                     = 1
+	X_FEATURES_H                         = 1
+	X_FILE_OFFSET_BITS                   = 64
+	X_GCC_LIMITS_H_                      = 0
+	X_LIBC_LIMITS_H_                     = 1
+	X_LIMITS_H___                        = 0
+	X_LINUX_LIMITS_H                     = 0
+	X_LP64                               = 1
+	X_POSIX2_BC_BASE_MAX                 = 99
+	X_POSIX2_BC_DIM_MAX                  = 2048
+	X_POSIX2_BC_SCALE_MAX                = 99
+	X_POSIX2_BC_STRING_MAX               = 1000
+	X_POSIX2_CHARCLASS_NAME_MAX          = 14
+	X_POSIX2_COLL_WEIGHTS_MAX            = 2
+	X_POSIX2_EXPR_NEST_MAX               = 32
+	X_POSIX2_LINE_MAX                    = 2048
+	X_POSIX2_RE_DUP_MAX                  = 255
+	X_POSIX_AIO_LISTIO_MAX               = 2
+	X_POSIX_AIO_MAX                      = 1
+	X_POSIX_ARG_MAX                      = 4096
+	X_POSIX_CHILD_MAX                    = 25
+	X_POSIX_CLOCKRES_MIN                 = 20000000
+	X_POSIX_C_SOURCE                     = 200809
+	X_POSIX_DELAYTIMER_MAX               = 32
+	X_POSIX_HOST_NAME_MAX                = 255
+	X_POSIX_LINK_MAX                     = 8
+	X_POSIX_LOGIN_NAME_MAX               = 9
+	X_POSIX_MAX_CANON                    = 255
+	X_POSIX_MAX_INPUT                    = 255
+	X_POSIX_MQ_OPEN_MAX                  = 8
+	X_POSIX_MQ_PRIO_MAX                  = 32
+	X_POSIX_NAME_MAX                     = 14
+	X_POSIX_NGROUPS_MAX                  = 8
+	X_POSIX_OPEN_MAX                     = 20
+	X_POSIX_PATH_MAX                     = 256
+	X_POSIX_PIPE_BUF                     = 512
+	X_POSIX_RE_DUP_MAX                   = 255
+	X_POSIX_RTSIG_MAX                    = 8
+	X_POSIX_SEM_NSEMS_MAX                = 256
+	X_POSIX_SEM_VALUE_MAX                = 32767
+	X_POSIX_SIGQUEUE_MAX                 = 32
+	X_POSIX_SOURCE                       = 1
+	X_POSIX_SSIZE_MAX                    = 32767
+	X_POSIX_STREAM_MAX                   = 8
+	X_POSIX_SYMLINK_MAX                  = 255
+	X_POSIX_SYMLOOP_MAX                  = 8
+	X_POSIX_THREAD_DESTRUCTOR_ITERATIONS = 4
+	X_POSIX_THREAD_KEYS_MAX              = 128
+	X_POSIX_THREAD_THREADS_MAX           = 64
+	X_POSIX_TIMER_MAX                    = 32
+	X_POSIX_TTY_NAME_MAX                 = 9
+	X_POSIX_TZNAME_MAX                   = 6
+	X_STDC_PREDEF_H                      = 1
+	X_SYS_CDEFS_H                        = 1
+	Linux                                = 1
+	Unix                                 = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3, or (at your option) any later
+// version.
+//
+// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+// for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// This administrivia gets added to the beginning of limits.h
+//    if the system has its own version of limits.h.
+
+// We use _GCC_LIMITS_H_ because we want this not to match
+//    any macros that the system's limits.h uses for its own purposes.
+
+// Use "..." so that we find syslimits.h only in this same directory.
+// syslimits.h stands for the system's own limits.h file.
+//    If we can use it ok unmodified, then we install this text.
+//    If fixincludes fixes it, then the fixed version is installed
+//    instead of this text.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types	<limits.h>
+
+// Handle feature test macros at the start of a header.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This header is internal to glibc and should not be included outside
+//    of glibc headers.  Headers including it must define
+//    __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION first.  This header
+//    cannot have multiple include guards because ISO C feature test
+//    macros depend on the definition of the macro when an affected
+//    header is included, not when the first system header is
+//    included.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// ISO/IEC TR 24731-2:2010 defines the __STDC_WANT_LIB_EXT2__
+//    macro.
+
+// ISO/IEC TS 18661-1:2014 defines the __STDC_WANT_IEC_60559_BFP_EXT__
+//    macro.  Most but not all symbols enabled by that macro in TS
+//    18661-1 are enabled unconditionally in C2X.  In C2X, the symbols in
+//    Annex F still require a new feature test macro
+//    __STDC_WANT_IEC_60559_EXT__ instead (C2X does not define
+//    __STDC_WANT_IEC_60559_BFP_EXT__), while a few features from TS
+//    18661-1 are not included in C2X (and thus should depend on
+//    __STDC_WANT_IEC_60559_BFP_EXT__ even when C2X features are
+//    enabled).
+//
+//    __GLIBC_USE (IEC_60559_BFP_EXT) controls those features from TS
+//    18661-1 not included in C2X.
+//
+//    __GLIBC_USE (IEC_60559_BFP_EXT_C2X) controls those features from TS
+//    18661-1 that are also included in C2X (with no feature test macro
+//    required in C2X).
+//
+//    __GLIBC_USE (IEC_60559_EXT) controls those features from TS 18661-1
+//    that are included in C2X but conditional on
+//    __STDC_WANT_IEC_60559_EXT__.  (There are currently no features
+//    conditional on __STDC_WANT_IEC_60559_EXT__ that are not in TS
+//    18661-1.)
+
+// ISO/IEC TS 18661-4:2015 defines the
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__ macro.  Other than the reduction
+//    functions, the symbols from this TS are enabled unconditionally in
+//    C2X.
+
+// ISO/IEC TS 18661-3:2015 defines the
+//    __STDC_WANT_IEC_60559_TYPES_EXT__ macro.
+
+// Maximum length of any multibyte character in any locale.
+//    We define this value here since the gcc header does not define
+//    the correct value.
+
+// If we are not using GNU CC we have to define all the symbols ourself.
+//    Otherwise use gcc's definitions (see below).
+
+// Get the compiler's limits.h, which defines almost all the ISO constants.
+//
+//     We put this #include_next outside the double inclusion check because
+//     it should be possible to include this file more than once and still get
+//     the definitions from gcc's header.
+
+// The <limits.h> files in some gcc versions don't define LLONG_MIN,
+//    LLONG_MAX, and ULLONG_MAX.  Instead only the values gcc defined for
+//    ages are available.
+
+// The integer width macros are not defined by GCC's <limits.h> before
+//    GCC 7, or if _GNU_SOURCE rather than
+//    __STDC_WANT_IEC_60559_BFP_EXT__ is used to enable this feature.
+
+// The macros for _Bool are not defined by GCC's <limits.h> before GCC
+//    11, or if _GNU_SOURCE is defined rather than enabling C2x support
+//    with -std.
+
+// POSIX adds things to <limits.h>.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.9.2 Minimum Values	Added to <limits.h>
+//
+//	Never include this file directly; use <limits.h> instead.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are the standard-mandated minimum values.
+
+// Minimum number of operations in one list I/O call.
+
+// Minimal number of outstanding asynchronous I/O operations.
+
+// Maximum length of arguments to `execve', including environment.
+
+// Maximum simultaneous processes per real user ID.
+
+// Minimal number of timer expiration overruns.
+
+// Maximum length of a host name (not including the terminating null)
+//    as returned from the GETHOSTNAME function.
+
+// Maximum link count of a file.
+
+// Maximum length of login name.
+
+// Number of bytes in a terminal canonical input queue.
+
+// Number of bytes for which space will be
+//    available in a terminal input queue.
+
+// Maximum number of message queues open for a process.
+
+// Maximum number of supported message priorities.
+
+// Number of bytes in a filename.
+
+// Number of simultaneous supplementary group IDs per process.
+
+// Number of files one process can have open at once.
+
+// Number of bytes in a pathname.
+
+// Number of bytes than can be written atomically to a pipe.
+
+// The number of repeated occurrences of a BRE permitted by the
+//    REGEXEC and REGCOMP functions when using the interval notation.
+
+// Minimal number of realtime signals reserved for the application.
+
+// Number of semaphores a process can have.
+
+// Maximal value of a semaphore.
+
+// Number of pending realtime signals.
+
+// Largest value of a `ssize_t'.
+
+// Number of streams a process can have open at once.
+
+// The number of bytes in a symbolic link.
+
+// The number of symbolic links that can be traversed in the
+//    resolution of a pathname in the absence of a loop.
+
+// Number of timer for a process.
+
+// Maximum number of characters in a tty name.
+
+// Maximum length of a timezone name (element of `tzname').
+
+// Maximum clock resolution in nanoseconds.
+
+// Get the implementation-specific values for the above.
+// Minimum guaranteed maximum values for system limits.  Linux version.
+//    Copyright (C) 1993-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public License as
+//    published by the Free Software Foundation; either version 2.1 of the
+//    License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; see the file COPYING.LIB.  If
+//    not, see <https://www.gnu.org/licenses/>.
+
+// The kernel header pollutes the namespace with the NR_OPEN symbol
+//    and defines LINK_MAX although filesystems have different maxima.  A
+//    similar thing is true for OPEN_MAX: the limit can be changed at
+//    runtime and therefore the macro must not be defined.  Remove this
+//    after including the header if necessary.
+
+// The kernel sources contain a file with all the needed information.
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// Have to remove NR_OPEN?
+// Have to remove LINK_MAX?
+// Have to remove OPEN_MAX?
+// Have to remove ARG_MAX?
+
+// The number of data keys per process.
+// This is the value this implementation supports.
+
+// Controlling the iterations of destructors for thread-specific data.
+// Number of iterations this implementation does.
+
+// The number of threads per process.
+// We have no predefined limit on the number of threads.
+
+// Maximum amount by which a process can descrease its asynchronous I/O
+//    priority level.
+
+// Arrange for the definition of PTHREAD_STACK_MIN.
+// Definition of PTHREAD_STACK_MIN, possibly dynamic.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition of PTHREAD_STACK_MIN.  Linux version.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Minimum size for a thread.  We are free to choose a reasonable value.
+
+// Maximum number of timer expiration overruns.
+
+// Maximum tty name length.
+
+// Maximum login name length.  This is arbitrary.
+
+// Maximum host name length.
+
+// Maximum message queue priority level.
+
+// Maximum value the semaphore can have.
+
+// ssize_t is not formally required to be the signed type
+//    corresponding to size_t, but it is for all configurations supported
+//    by glibc.
+
+// This value is a guaranteed minimum maximum.
+//    The current maximum can be got from `sysconf'.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; include <limits.h> instead.
+
+// The maximum `ibase' and `obase' values allowed by the `bc' utility.
+
+// The maximum number of elements allowed in an array by the `bc' utility.
+
+// The maximum `scale' value allowed by the `bc' utility.
+
+// The maximum length of a string constant accepted by the `bc' utility.
+
+// The maximum number of weights that can be assigned to an entry of
+//    the LC_COLLATE `order' keyword in the locale definition file.
+
+// The maximum number of expressions that can be nested
+//    within parentheses by the `expr' utility.
+
+// The maximum length, in bytes, of an input line.
+
+// The maximum number of repeated occurrences of a regular expression
+//    permitted when using the interval notation `\{M,N\}'.
+
+// The maximum number of bytes in a character class name.  We have no
+//    fixed limit, 2048 is a high number.
+
+// These values are implementation-specific,
+//    and may vary within the implementation.
+//    Their precise values can be obtained from sysconf.
+
+// This value is defined like this in regex.h.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3, or (at your option) any later
+// version.
+//
+// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+// for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Number of bits in a `char'.
+
+// Maximum length of a multibyte character.
+
+// Minimum and maximum values a `signed char' can hold.
+
+// Maximum value an `unsigned char' can hold.  (Minimum is 0).
+
+// Minimum and maximum values a `char' can hold.
+
+// Minimum and maximum values a `signed short int' can hold.
+
+// Maximum value an `unsigned short int' can hold.  (Minimum is 0).
+
+// Minimum and maximum values a `signed int' can hold.
+
+// Maximum value an `unsigned int' can hold.  (Minimum is 0).
+
+// Minimum and maximum values a `signed long int' can hold.
+//    (Same as `int').
+
+// Maximum value an `unsigned long int' can hold.  (Minimum is 0).
+
+// Minimum and maximum values a `signed long long int' can hold.
+
+// Maximum value an `unsigned long long int' can hold.  (Minimum is 0).
+
+// This administrivia gets added to the end of limits.h
+//    if the system has its own version of limits.h.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/musl_linux_riscv64.go b/vendor/modernc.org/libc/musl_linux_riscv64.go
new file mode 100644
index 00000000..57470023
--- /dev/null
+++ b/vendor/modernc.org/libc/musl_linux_riscv64.go
@@ -0,0 +1,6997 @@
+// Code generated by 'ccgo -export-externs X -hide __syscall0,__syscall1,__syscall2,__syscall3,__syscall4,__syscall5,__syscall6 -nostdinc -nostdlib -o ../musl_linux_riscv64.go -pkgname libc -static-locals-prefix _s -Iarch/riscv64 -Iarch/generic -Iobj/src/internal -Isrc/include -Isrc/internal -Iobj/include -Iinclude copyright.c src/ctype/__ctype_b_loc.c src/ctype/isalnum.c src/ctype/isalpha.c src/ctype/isdigit.c src/ctype/islower.c src/ctype/isprint.c src/ctype/isupper.c src/ctype/isxdigit.c src/dirent/closedir.c src/dirent/opendir.c src/dirent/readdir.c src/internal/floatscan.c src/internal/intscan.c src/internal/shgetc.c src/locale/localeconv.c src/math/__fpclassify.c src/math/__fpclassifyf.c src/math/__fpclassifyl.c src/math/copysignl.c src/math/fabsl.c src/math/fmodl.c src/math/nanf.c src/math/rint.c src/math/scalbn.c src/math/scalbnl.c src/multibyte/internal.c src/multibyte/mbrtowc.c src/multibyte/mbsinit.c src/network/freeaddrinfo.c src/network/getaddrinfo.c src/network/gethostbyaddr.c src/network/gethostbyaddr_r.c src/network/gethostbyname.c src/network/gethostbyname2.c src/network/gethostbyname2_r.c src/network/gethostbyname_r.c src/network/getnameinfo.c src/network/h_errno.c src/network/inet_aton.c src/network/inet_ntop.c src/network/inet_pton.c src/network/lookup_ipliteral.c src/network/lookup_name.c src/network/lookup_serv.c src/prng/rand_r.c src/stdio/__lockfile.c src/stdio/__toread.c src/stdio/__uflow.c src/stdio/sscanf.c src/stdio/vfscanf.c src/stdio/vsscanf.c src/stdlib/bsearch.c src/stdlib/strtod.c src/stdlib/strtol.c src/string/strdup.c src/string/strlcat.c src/string/strlcpy.c src/string/strncasecmp.c src/string/strncat.c src/string/strnlen.c src/string/strspn.c src/string/strtok.c src/thread/pthread_attr_get.c src/thread/pthread_attr_setdetachstate.c src/thread/pthread_mutex_lock.c src/thread/pthread_mutexattr_destroy.c src/thread/pthread_mutexattr_init.c src/thread/pthread_mutexattr_settype.c', DO NOT EDIT.
+
+package libc
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+// musl as a whole is licensed under the following standard MIT license:
+//
+// ----------------------------------------------------------------------
+// Copyright © 2005-2020 Rich Felker, et al.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+// ----------------------------------------------------------------------
+//
+// Authors/contributors include:
+//
+// A. Wilcox
+// Ada Worcester
+// Alex Dowad
+// Alex Suykov
+// Alexander Monakov
+// Andre McCurdy
+// Andrew Kelley
+// Anthony G. Basile
+// Aric Belsito
+// Arvid Picciani
+// Bartosz Brachaczek
+// Benjamin Peterson
+// Bobby Bingham
+// Boris Brezillon
+// Brent Cook
+// Chris Spiegel
+// Clément Vasseur
+// Daniel Micay
+// Daniel Sabogal
+// Daurnimator
+// David Carlier
+// David Edelsohn
+// Denys Vlasenko
+// Dmitry Ivanov
+// Dmitry V. Levin
+// Drew DeVault
+// Emil Renner Berthing
+// Fangrui Song
+// Felix Fietkau
+// Felix Janda
+// Gianluca Anzolin
+// Hauke Mehrtens
+// He X
+// Hiltjo Posthuma
+// Isaac Dunham
+// Jaydeep Patil
+// Jens Gustedt
+// Jeremy Huntwork
+// Jo-Philipp Wich
+// Joakim Sindholt
+// John Spencer
+// Julien Ramseier
+// Justin Cormack
+// Kaarle Ritvanen
+// Khem Raj
+// Kylie McClain
+// Leah Neukirchen
+// Luca Barbato
+// Luka Perkov
+// M Farkas-Dyck (Strake)
+// Mahesh Bodapati
+// Markus Wichmann
+// Masanori Ogino
+// Michael Clark
+// Michael Forney
+// Mikhail Kremnyov
+// Natanael Copa
+// Nicholas J. Kain
+// orc
+// Pascal Cuoq
+// Patrick Oppenlander
+// Petr Hosek
+// Petr Skocik
+// Pierre Carrier
+// Reini Urban
+// Rich Felker
+// Richard Pennington
+// Ryan Fairfax
+// Samuel Holland
+// Segev Finer
+// Shiz
+// sin
+// Solar Designer
+// Stefan Kristiansson
+// Stefan O'Rear
+// Szabolcs Nagy
+// Timo Teräs
+// Trutz Behn
+// Valentin Ochs
+// Will Dietz
+// William Haddon
+// William Pitcock
+//
+// Portions of this software are derived from third-party works licensed
+// under terms compatible with the above MIT license:
+//
+// The TRE regular expression implementation (src/regex/reg* and
+// src/regex/tre*) is Copyright © 2001-2008 Ville Laurikari and licensed
+// under a 2-clause BSD license (license text in the source files). The
+// included version has been heavily modified by Rich Felker in 2012, in
+// the interests of size, simplicity, and namespace cleanliness.
+//
+// Much of the math library code (src/math/* and src/complex/*) is
+// Copyright © 1993,2004 Sun Microsystems or
+// Copyright © 2003-2011 David Schultz or
+// Copyright © 2003-2009 Steven G. Kargl or
+// Copyright © 2003-2009 Bruce D. Evans or
+// Copyright © 2008 Stephen L. Moshier or
+// Copyright © 2017-2018 Arm Limited
+// and labelled as such in comments in the individual source files. All
+// have been licensed under extremely permissive terms.
+//
+// The ARM memcpy code (src/string/arm/memcpy.S) is Copyright © 2008
+// The Android Open Source Project and is licensed under a two-clause BSD
+// license. It was taken from Bionic libc, used on Android.
+//
+// The AArch64 memcpy and memset code (src/string/aarch64/*) are
+// Copyright © 1999-2019, Arm Limited.
+//
+// The implementation of DES for crypt (src/crypt/crypt_des.c) is
+// Copyright © 1994 David Burren. It is licensed under a BSD license.
+//
+// The implementation of blowfish crypt (src/crypt/crypt_blowfish.c) was
+// originally written by Solar Designer and placed into the public
+// domain. The code also comes with a fallback permissive license for use
+// in jurisdictions that may not recognize the public domain.
+//
+// The smoothsort implementation (src/stdlib/qsort.c) is Copyright © 2011
+// Valentin Ochs and is licensed under an MIT-style license.
+//
+// The x86_64 port was written by Nicholas J. Kain and is licensed under
+// the standard MIT terms.
+//
+// The mips and microblaze ports were originally written by Richard
+// Pennington for use in the ellcc project. The original code was adapted
+// by Rich Felker for build system and code conventions during upstream
+// integration. It is licensed under the standard MIT terms.
+//
+// The mips64 port was contributed by Imagination Technologies and is
+// licensed under the standard MIT terms.
+//
+// The powerpc port was also originally written by Richard Pennington,
+// and later supplemented and integrated by John Spencer. It is licensed
+// under the standard MIT terms.
+//
+// All other files which have no copyright comments are original works
+// produced specifically for use as part of this library, written either
+// by Rich Felker, the main author of the library, or by one or more
+// contibutors listed above. Details on authorship of individual files
+// can be found in the git version control history of the project. The
+// omission of copyright and license comments in each file is in the
+// interest of source tree size.
+//
+// In addition, permission is hereby granted for all public header files
+// (include/* and arch/*/bits/*) and crt files intended to be linked into
+// applications (crt/*, ldso/dlstart.c, and arch/*/crt_arch.h) to omit
+// the copyright notice and permission notice otherwise required by the
+// license, and to use these files without any requirement of
+// attribution. These files include substantial contributions from:
+//
+// Bobby Bingham
+// John Spencer
+// Nicholas J. Kain
+// Rich Felker
+// Richard Pennington
+// Stefan Kristiansson
+// Szabolcs Nagy
+//
+// all of whom have explicitly granted such permission.
+//
+// This file previously contained text expressing a belief that most of
+// the files covered by the above exception were sufficiently trivial not
+// to be subject to copyright, resulting in confusion over whether it
+// negated the permissions granted in the license. In the spirit of
+// permissive licensing, and of not having licensing issues being an
+// obstacle to adoption, that text has been removed.
+const ( /* copyright.c:194:1: */
+	__musl__copyright__ = 0
+)
+
+const ( /* nameser.h:117:1: */
+	ns_uop_delete = 0
+	ns_uop_add    = 1
+	ns_uop_max    = 2
+)
+
+const ( /* nameser.h:147:1: */
+	ns_t_invalid  = 0
+	ns_t_a        = 1
+	ns_t_ns       = 2
+	ns_t_md       = 3
+	ns_t_mf       = 4
+	ns_t_cname    = 5
+	ns_t_soa      = 6
+	ns_t_mb       = 7
+	ns_t_mg       = 8
+	ns_t_mr       = 9
+	ns_t_null     = 10
+	ns_t_wks      = 11
+	ns_t_ptr      = 12
+	ns_t_hinfo    = 13
+	ns_t_minfo    = 14
+	ns_t_mx       = 15
+	ns_t_txt      = 16
+	ns_t_rp       = 17
+	ns_t_afsdb    = 18
+	ns_t_x25      = 19
+	ns_t_isdn     = 20
+	ns_t_rt       = 21
+	ns_t_nsap     = 22
+	ns_t_nsap_ptr = 23
+	ns_t_sig      = 24
+	ns_t_key      = 25
+	ns_t_px       = 26
+	ns_t_gpos     = 27
+	ns_t_aaaa     = 28
+	ns_t_loc      = 29
+	ns_t_nxt      = 30
+	ns_t_eid      = 31
+	ns_t_nimloc   = 32
+	ns_t_srv      = 33
+	ns_t_atma     = 34
+	ns_t_naptr    = 35
+	ns_t_kx       = 36
+	ns_t_cert     = 37
+	ns_t_a6       = 38
+	ns_t_dname    = 39
+	ns_t_sink     = 40
+	ns_t_opt      = 41
+	ns_t_apl      = 42
+	ns_t_tkey     = 249
+	ns_t_tsig     = 250
+	ns_t_ixfr     = 251
+	ns_t_axfr     = 252
+	ns_t_mailb    = 253
+	ns_t_maila    = 254
+	ns_t_any      = 255
+	ns_t_zxfr     = 256
+	ns_t_max      = 65536
+)
+
+const ( /* nameser.h:210:1: */
+	ns_c_invalid = 0
+	ns_c_in      = 1
+	ns_c_2       = 2
+	ns_c_chaos   = 3
+	ns_c_hs      = 4
+	ns_c_none    = 254
+	ns_c_any     = 255
+	ns_c_max     = 65536
+)
+
+const ( /* nameser.h:221:1: */
+	ns_kt_rsa     = 1
+	ns_kt_dh      = 2
+	ns_kt_dsa     = 3
+	ns_kt_private = 254
+)
+
+const ( /* nameser.h:228:1: */
+	cert_t_pkix = 1
+	cert_t_spki = 2
+	cert_t_pgp  = 3
+	cert_t_url  = 253
+	cert_t_oid  = 254
+)
+
+const ( /* nameser.h:28:1: */
+	ns_s_qd  = 0
+	ns_s_zn  = 0
+	ns_s_an  = 1
+	ns_s_pr  = 1
+	ns_s_ns  = 2
+	ns_s_ud  = 2
+	ns_s_ar  = 3
+	ns_s_max = 4
+)
+
+const ( /* nameser.h:75:1: */
+	ns_f_qr     = 0
+	ns_f_opcode = 1
+	ns_f_aa     = 2
+	ns_f_tc     = 3
+	ns_f_rd     = 4
+	ns_f_ra     = 5
+	ns_f_z      = 6
+	ns_f_ad     = 7
+	ns_f_cd     = 8
+	ns_f_rcode  = 9
+	ns_f_max    = 10
+)
+
+const ( /* nameser.h:89:1: */
+	ns_o_query  = 0
+	ns_o_iquery = 1
+	ns_o_status = 2
+	ns_o_notify = 4
+	ns_o_update = 5
+	ns_o_max    = 6
+)
+
+const ( /* nameser.h:98:1: */
+	ns_r_noerror  = 0
+	ns_r_formerr  = 1
+	ns_r_servfail = 2
+	ns_r_nxdomain = 3
+	ns_r_notimpl  = 4
+	ns_r_refused  = 5
+	ns_r_yxdomain = 6
+	ns_r_yxrrset  = 7
+	ns_r_nxrrset  = 8
+	ns_r_notauth  = 9
+	ns_r_notzone  = 10
+	ns_r_max      = 11
+	ns_r_badvers  = 16
+	ns_r_badsig   = 16
+	ns_r_badkey   = 17
+	ns_r_badtime  = 18
+)
+
+const ( /* pthread_impl.h:58:1: */
+	DT_EXITING  = 0
+	DT_JOINABLE = 1
+	DT_DETACHED = 2
+)
+
+type ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type size_t = uint64 /* <builtin>:9:23 */
+
+type wchar_t = int32 /* <builtin>:15:24 */
+
+type uint16_t = uint16 /* alltypes.h:124:25 */
+
+type uint32_t = uint32 /* alltypes.h:129:25 */
+
+type uint64_t = uint64 /* alltypes.h:134:25 */
+
+func __bswap32(tls *TLS, __x uint32_t) uint32_t { /* endian.h:24:26: */
+	return __x>>24 | __x>>8&uint32_t(0xff00) | __x<<8&uint32_t(0xff0000) | __x<<24
+}
+
+var table = [384]uint16{
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+	uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536),
+	uint16((0x200/256 | 0x200*256) % 65536), uint16((0x320/256 | 0x320*256) % 65536), uint16((0x220/256 | 0x220*256) % 65536), uint16((0x220/256 | 0x220*256) % 65536), uint16((0x220/256 | 0x220*256) % 65536), uint16((0x220/256 | 0x220*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536),
+	uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536),
+	uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536),
+	uint16((0x160/256 | 0x160*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536),
+	uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536),
+	uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536),
+	uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x8d8/256 | 0x8d8*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536),
+	uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x8d5/256 | 0x8d5*256) % 65536), uint16((0x8d5/256 | 0x8d5*256) % 65536), uint16((0x8d5/256 | 0x8d5*256) % 65536), uint16((0x8d5/256 | 0x8d5*256) % 65536), uint16((0x8d5/256 | 0x8d5*256) % 65536), uint16((0x8d5/256 | 0x8d5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536),
+	uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536),
+	uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536),
+	uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x8c5/256 | 0x8c5*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536),
+	uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x8d6/256 | 0x8d6*256) % 65536), uint16((0x8d6/256 | 0x8d6*256) % 65536), uint16((0x8d6/256 | 0x8d6*256) % 65536), uint16((0x8d6/256 | 0x8d6*256) % 65536), uint16((0x8d6/256 | 0x8d6*256) % 65536), uint16((0x8d6/256 | 0x8d6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536),
+	uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536),
+	uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536),
+	uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x8c6/256 | 0x8c6*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x4c0/256 | 0x4c0*256) % 65536), uint16((0x200/256 | 0x200*256) % 65536),
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+	uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0), uint16(0),
+} /* __ctype_b_loc.c:9:29 */
+
+var ptable uintptr = 0 /* __ctype_b_loc.c:36:29 */
+
+func X__ctype_b_loc(tls *TLS) uintptr { /* __ctype_b_loc.c:38:22: */
+	return uintptr(unsafe.Pointer(&ptable))
+}
+
+func __isspace(tls *TLS, _c int32) int32 { /* ctype.h:26:21: */
+	return Bool32(_c == ' ' || uint32(_c)-uint32('\t') < uint32(5))
+}
+
+type __locale_struct = struct{ cat [6]uintptr } /* alltypes.h:341:9 */
+
+type locale_t = uintptr /* alltypes.h:341:32 */
+
+func Xisalnum(tls *TLS, c int32) int32 { /* isalnum.c:3:5: */
+	return Bool32(func() int32 {
+		if 0 != 0 {
+			return Xisalpha(tls, c)
+		}
+		return Bool32(uint32(c)|uint32(32)-uint32('a') < uint32(26))
+	}() != 0 || func() int32 {
+		if 0 != 0 {
+			return Xisdigit(tls, c)
+		}
+		return Bool32(uint32(c)-uint32('0') < uint32(10))
+	}() != 0)
+}
+
+func X__isalnum_l(tls *TLS, c int32, l locale_t) int32 { /* isalnum.c:8:5: */
+	return Xisalnum(tls, c)
+}
+
+func Xisalpha(tls *TLS, c int32) int32 { /* isalpha.c:4:5: */
+	return Bool32(uint32(c)|uint32(32)-uint32('a') < uint32(26))
+}
+
+func X__isalpha_l(tls *TLS, c int32, l locale_t) int32 { /* isalpha.c:9:5: */
+	return Xisalpha(tls, c)
+}
+
+func Xisdigit(tls *TLS, c int32) int32 { /* isdigit.c:4:5: */
+	return Bool32(uint32(c)-uint32('0') < uint32(10))
+}
+
+func X__isdigit_l(tls *TLS, c int32, l locale_t) int32 { /* isdigit.c:9:5: */
+	return Xisdigit(tls, c)
+}
+
+func Xislower(tls *TLS, c int32) int32 { /* islower.c:4:5: */
+	return Bool32(uint32(c)-uint32('a') < uint32(26))
+}
+
+func X__islower_l(tls *TLS, c int32, l locale_t) int32 { /* islower.c:9:5: */
+	return Xislower(tls, c)
+}
+
+func Xisprint(tls *TLS, c int32) int32 { /* isprint.c:4:5: */
+	return Bool32(uint32(c)-uint32(0x20) < uint32(0x5f))
+}
+
+func X__isprint_l(tls *TLS, c int32, l locale_t) int32 { /* isprint.c:9:5: */
+	return Xisprint(tls, c)
+}
+
+func Xisupper(tls *TLS, c int32) int32 { /* isupper.c:4:5: */
+	return Bool32(uint32(c)-uint32('A') < uint32(26))
+}
+
+func X__isupper_l(tls *TLS, c int32, l locale_t) int32 { /* isupper.c:9:5: */
+	return Xisupper(tls, c)
+}
+
+func Xisxdigit(tls *TLS, c int32) int32 { /* isxdigit.c:3:5: */
+	return Bool32(func() int32 {
+		if 0 != 0 {
+			return Xisdigit(tls, c)
+		}
+		return Bool32(uint32(c)-uint32('0') < uint32(10))
+	}() != 0 || uint32(c)|uint32(32)-uint32('a') < uint32(6))
+}
+
+func X__isxdigit_l(tls *TLS, c int32, l locale_t) int32 { /* isxdigit.c:8:5: */
+	return Xisxdigit(tls, c)
+}
+
+type off_t = int64 /* alltypes.h:160:16 */
+
+type ino_t = uint64 /* alltypes.h:165:25 */
+
+type dirent = struct {
+	d_ino    ino_t
+	d_off    off_t
+	d_reclen uint16
+	d_type   uint8
+	d_name   [256]uint8
+	_        [5]byte
+} /* dirent.h:5:1 */
+
+type __dirstream = struct {
+	tell    off_t
+	fd      int32
+	buf_pos int32
+	buf_end int32
+	lock    [1]int32
+	buf     [2048]uint8
+} /* dirent.h:20:9 */
+
+type DIR = __dirstream /* dirent.h:20:28 */
+
+type ssize_t = int64 /* alltypes.h:63:15 */
+
+type intptr_t = int64 /* alltypes.h:68:15 */
+
+type pid_t = int32 /* alltypes.h:233:13 */
+
+type uid_t = uint32 /* alltypes.h:243:18 */
+
+type gid_t = uint32 /* alltypes.h:248:18 */
+
+type useconds_t = uint32 /* alltypes.h:258:18 */
+
+type div_t = struct {
+	quot int32
+	rem  int32
+} /* stdlib.h:62:35 */
+type ldiv_t = struct {
+	quot int64
+	rem  int64
+} /* stdlib.h:63:36 */
+type lldiv_t = struct {
+	quot int64
+	rem  int64
+} /* stdlib.h:64:41 */
+
+func Xclosedir(tls *TLS, dir uintptr) int32 { /* closedir.c:6:5: */
+	var ret int32 = Xclose(tls, (*DIR)(unsafe.Pointer(dir)).fd)
+	Xfree(tls, dir)
+	return ret
+}
+
+type mode_t = uint32 /* alltypes.h:150:18 */
+
+type iovec = struct {
+	iov_base uintptr
+	iov_len  size_t
+} /* alltypes.h:353:1 */
+
+type flock = struct {
+	l_type   int16
+	l_whence int16
+	_        [4]byte
+	l_start  off_t
+	l_len    off_t
+	l_pid    pid_t
+	_        [4]byte
+} /* fcntl.h:24:1 */
+
+type file_handle = struct {
+	_            [0]uint32
+	handle_bytes uint32
+	handle_type  int32
+} /* fcntl.h:167:1 */
+
+type f_owner_ex = struct {
+	__type int32
+	pid    pid_t
+} /* fcntl.h:172:1 */
+
+// We don't have a clock_gettime function.
+// #define VDSO_CGT_SYM "__vdso_clock_gettime"
+// #define VDSO_CGT_VER "LINUX_2.6"
+
+type syscall_arg_t = int64 /* syscall.h:22:14 */
+
+func Xopendir(tls *TLS, name uintptr) uintptr { /* opendir.c:8:5: */
+	var fd int32
+	var dir uintptr
+
+	if AssignInt32(&fd, Xopen(tls, name, 00|0200000|02000000, 0)) < 0 {
+		return uintptr(0)
+	}
+	if !(int32(AssignUintptr(&dir, Xcalloc(tls, uint64(1), uint64(unsafe.Sizeof(DIR{}))))) != 0) {
+		__syscall1(tls, int64(57), int64(fd))
+		return uintptr(0)
+	}
+	(*DIR)(unsafe.Pointer(dir)).fd = fd
+	return dir
+}
+
+type max_align_t = struct {
+	__ll int64
+	__ld float64
+} /* alltypes.h:39:54 */
+
+type dirstream_buf_alignment_check = [1]uint8 /* readdir.c:7:14 */
+
+func Xreaddir(tls *TLS, dir uintptr) uintptr { /* readdir.c:10:15: */
+	var de uintptr
+
+	if (*DIR)(unsafe.Pointer(dir)).buf_pos >= (*DIR)(unsafe.Pointer(dir)).buf_end {
+		var len int32 = int32(__syscall3(tls, int64(61), int64((*DIR)(unsafe.Pointer(dir)).fd), int64(dir+24), int64(unsafe.Sizeof([2048]uint8{}))))
+		if len <= 0 {
+			if len < 0 && len != -2 {
+				*(*int32)(unsafe.Pointer(X___errno_location(tls))) = -len
+			}
+			return uintptr(0)
+		}
+		(*DIR)(unsafe.Pointer(dir)).buf_end = len
+		(*DIR)(unsafe.Pointer(dir)).buf_pos = 0
+	}
+	de = dir + 24 + uintptr((*DIR)(unsafe.Pointer(dir)).buf_pos)
+	*(*int32)(unsafe.Pointer(dir + 12)) += int32((*dirent)(unsafe.Pointer(de)).d_reclen)
+	(*DIR)(unsafe.Pointer(dir)).tell = (*dirent)(unsafe.Pointer(de)).d_off
+	return de
+}
+
+type uintptr_t = uint64 /* alltypes.h:53:24 */
+
+type int8_t = int8 /* alltypes.h:94:25 */
+
+type int16_t = int16 /* alltypes.h:99:25 */
+
+type int32_t = int32 /* alltypes.h:104:25 */
+
+type int64_t = int64 /* alltypes.h:109:25 */
+
+type intmax_t = int64 /* alltypes.h:114:25 */
+
+type uint8_t = uint8 /* alltypes.h:119:25 */
+
+type uintmax_t = uint64 /* alltypes.h:144:25 */
+
+type int_fast8_t = int8_t   /* stdint.h:22:16 */
+type int_fast64_t = int64_t /* stdint.h:23:17 */
+
+type int_least8_t = int8_t   /* stdint.h:25:17 */
+type int_least16_t = int16_t /* stdint.h:26:17 */
+type int_least32_t = int32_t /* stdint.h:27:17 */
+type int_least64_t = int64_t /* stdint.h:28:17 */
+
+type uint_fast8_t = uint8_t   /* stdint.h:30:17 */
+type uint_fast64_t = uint64_t /* stdint.h:31:18 */
+
+type uint_least8_t = uint8_t   /* stdint.h:33:18 */
+type uint_least16_t = uint16_t /* stdint.h:34:18 */
+type uint_least32_t = uint32_t /* stdint.h:35:18 */
+type uint_least64_t = uint64_t /* stdint.h:36:18 */
+
+type int_fast16_t = int32_t   /* stdint.h:1:17 */
+type int_fast32_t = int32_t   /* stdint.h:2:17 */
+type uint_fast16_t = uint32_t /* stdint.h:3:18 */
+type uint_fast32_t = uint32_t /* stdint.h:4:18 */
+
+type _IO_FILE = struct {
+	flags        uint32
+	_            [4]byte
+	rpos         uintptr
+	rend         uintptr
+	close        uintptr
+	wend         uintptr
+	wpos         uintptr
+	mustbezero_1 uintptr
+	wbase        uintptr
+	read         uintptr
+	write        uintptr
+	seek         uintptr
+	buf          uintptr
+	buf_size     size_t
+	prev         uintptr
+	next         uintptr
+	fd           int32
+	pipe_pid     int32
+	lockcount    int64
+	mode         int32
+	lock         int32
+	lbf          int32
+	_            [4]byte
+	cookie       uintptr
+	off          off_t
+	getln_buf    uintptr
+	mustbezero_2 uintptr
+	shend        uintptr
+	shlim        off_t
+	shcnt        off_t
+	prev_locked  uintptr
+	next_locked  uintptr
+	locale       uintptr
+} /* alltypes.h:318:9 */
+
+type FILE = _IO_FILE /* alltypes.h:318:25 */
+
+type va_list = uintptr /* alltypes.h:324:27 */
+
+type _G_fpos64_t = struct {
+	_        [0]uint64
+	__opaque [16]uint8
+} /* stdio.h:54:9 */
+
+type fpos_t = _G_fpos64_t /* stdio.h:58:3 */
+
+type float_t = float32 /* alltypes.h:28:15 */
+
+type double_t = float64 /* alltypes.h:33:16 */
+
+func __FLOAT_BITS(tls *TLS, __f float32) uint32 { /* math.h:55:26: */
+	bp := tls.Alloc(4)
+	defer tls.Free(4)
+
+	// var __u struct {__f float32;} at bp, 4
+
+	*(*float32)(unsafe.Pointer(bp)) = __f
+	return *(*uint32)(unsafe.Pointer(bp))
+}
+
+func __DOUBLE_BITS(tls *TLS, __f float64) uint64 { /* math.h:61:36: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	// var __u struct {__f float64;} at bp, 8
+
+	*(*float64)(unsafe.Pointer(bp)) = __f
+	return *(*uint64)(unsafe.Pointer(bp))
+}
+
+type __pthread = struct {
+	self          uintptr
+	dtv           uintptr
+	prev          uintptr
+	next          uintptr
+	sysinfo       uintptr_t
+	canary        uintptr_t
+	canary2       uintptr_t
+	tid           int32
+	errno_val     int32
+	detach_state  int32
+	cancel        int32
+	canceldisable uint8
+	cancelasync   uint8
+	tsd_used      uint8 /* unsigned char tsd_used: 1, unsigned char dlerror_flag: 1 */
+	_             [5]byte
+	map_base      uintptr
+	map_size      size_t
+	stack         uintptr
+	stack_size    size_t
+	guard_size    size_t
+	result        uintptr
+	cancelbuf     uintptr
+	tsd           uintptr
+	robust_list   struct {
+		head    uintptr
+		off     int64
+		pending uintptr
+	}
+	timer_id      int32
+	_             [4]byte
+	locale        locale_t
+	killlock      [1]int32
+	_             [4]byte
+	dlerror_buf   uintptr
+	stdio_locks   uintptr
+	canary_at_end uintptr_t
+	dtv_copy      uintptr
+} /* alltypes.h:271:9 */
+
+func scanexp(tls *TLS, f uintptr, pok int32) int64 { /* floatscan.c:37:18: */
+	var c int32
+	var x int32
+	var y int64
+	var neg int32 = 0
+
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	if c == '+' || c == '-' {
+		neg = Bool32(c == '-')
+		c = func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}()
+		if uint32(c-'0') >= 10 && pok != 0 {
+			if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+				(*FILE)(unsafe.Pointer(f)).rpos--
+			} else {
+			}
+		}
+	}
+	if uint32(c-'0') >= 10 {
+		if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+			(*FILE)(unsafe.Pointer(f)).rpos--
+		} else {
+		}
+		return -0x7fffffffffffffff - int64(1)
+	}
+	for x = 0; uint32(c-'0') < 10 && x < 0x7fffffff/10; c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() {
+		x = 10*x + c - '0'
+	}
+	for y = int64(x); uint32(c-'0') < 10 && y < 0x7fffffffffffffff/int64(100); c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() {
+		y = int64(10)*y + int64(c) - int64('0')
+	}
+	for ; uint32(c-'0') < 10; c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() {
+	}
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	if neg != 0 {
+		return -y
+	}
+	return y
+}
+
+func decfloat(tls *TLS, f uintptr, c int32, bits int32, emin int32, sign int32, pok int32) float64 { /* floatscan.c:64:20: */
+	bp := tls.Alloc(512)
+	defer tls.Free(512)
+
+	// var x [128]uint32_t at bp, 512
+
+	var i int32
+	var j int32
+	var k int32
+	var a int32
+	var z int32
+	var lrp int64 = int64(0)
+	var dc int64 = int64(0)
+	var e10 int64 = int64(0)
+	var lnz int32 = 0
+	var gotdig int32 = 0
+	var gotrad int32 = 0
+	var rp int32
+	var e2 int32
+	var emax int32 = -emin - bits + 3
+	var denormal int32 = 0
+	var y float64
+	var frac float64 = float64(0)
+	var bias float64 = float64(0)
+
+	j = 0
+	k = 0
+
+	// Don't let leading zeros consume buffer space
+	for ; c == '0'; c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() {
+		gotdig = 1
+	}
+	if c == '.' {
+		gotrad = 1
+		for c = func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}(); c == '0'; c = func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}() {
+			gotdig = 1
+			lrp--
+		}
+	}
+
+	*(*uint32_t)(unsafe.Pointer(bp)) = uint32_t(0)
+	for ; uint32(c-'0') < 10 || c == '.'; c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() {
+		if c == '.' {
+			if gotrad != 0 {
+				break
+			}
+			gotrad = 1
+			lrp = dc
+		} else if k < 128-3 {
+			dc++
+			if c != '0' {
+				lnz = int32(dc)
+			}
+			if j != 0 {
+				*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) = *(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4))*uint32_t(10) + uint32_t(c) - uint32_t('0')
+			} else {
+				*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) = uint32_t(c - '0')
+			}
+			if PreIncInt32(&j, 1) == 9 {
+				k++
+				j = 0
+			}
+			gotdig = 1
+		} else {
+			dc++
+			if c != '0' {
+				lnz = (128 - 4) * 9
+				*(*uint32_t)(unsafe.Pointer(bp + 124*4)) |= uint32_t(1)
+			}
+		}
+	}
+	if !(gotrad != 0) {
+		lrp = dc
+	}
+
+	if gotdig != 0 && c|32 == 'e' {
+		e10 = scanexp(tls, f, pok)
+		if e10 == -0x7fffffffffffffff-int64(1) {
+			if pok != 0 {
+				if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+					(*FILE)(unsafe.Pointer(f)).rpos--
+				} else {
+				}
+			} else {
+				X__shlim(tls, f, int64(0))
+				return float64(0)
+			}
+			e10 = int64(0)
+		}
+		lrp = lrp + e10
+	} else if c >= 0 {
+		if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+			(*FILE)(unsafe.Pointer(f)).rpos--
+		} else {
+		}
+	}
+	if !(gotdig != 0) {
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 22
+		X__shlim(tls, f, int64(0))
+		return float64(0)
+	}
+
+	// Handle zero specially to avoid nasty special cases later
+	if !(int32(*(*uint32_t)(unsafe.Pointer(bp))) != 0) {
+		return float64(sign) * 0.0
+	}
+
+	// Optimize small integers (w/no exponent) and over/under-flow
+	if lrp == dc && dc < int64(10) && (bits > 30 || *(*uint32_t)(unsafe.Pointer(bp))>>bits == uint32_t(0)) {
+		return float64(sign) * float64(*(*uint32_t)(unsafe.Pointer(bp)))
+	}
+	if lrp > int64(-emin/2) {
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+		return float64(sign) * 1.79769313486231570815e+308 * 1.79769313486231570815e+308
+	}
+	if lrp < int64(emin-2*53) {
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+		return float64(sign) * 2.22507385850720138309e-308 * 2.22507385850720138309e-308
+	}
+
+	// Align incomplete final B1B digit
+	if j != 0 {
+		for ; j < 9; j++ {
+			*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) *= uint32_t(10)
+		}
+		k++
+		j = 0
+	}
+
+	a = 0
+	z = k
+	e2 = 0
+	rp = int32(lrp)
+
+	// Optimize small to mid-size integers (even in exp. notation)
+	if lnz < 9 && lnz <= rp && rp < 18 {
+		if rp == 9 {
+			return float64(sign) * float64(*(*uint32_t)(unsafe.Pointer(bp)))
+		}
+		if rp < 9 {
+			return float64(sign) * float64(*(*uint32_t)(unsafe.Pointer(bp))) / float64(_sp10s[8-rp])
+		}
+		var bitlim int32 = bits - 3*(rp-9)
+		if bitlim > 30 || *(*uint32_t)(unsafe.Pointer(bp))>>bitlim == uint32_t(0) {
+			return float64(sign) * float64(*(*uint32_t)(unsafe.Pointer(bp))) * float64(_sp10s[rp-10])
+		}
+	}
+
+	// Drop trailing zeros
+	for ; !(int32(*(*uint32_t)(unsafe.Pointer(bp + uintptr(z-1)*4))) != 0); z-- {
+	}
+
+	// Align radix point to B1B digit boundary
+	if rp%9 != 0 {
+		var rpm9 int32
+		if rp >= 0 {
+			rpm9 = rp % 9
+		} else {
+			rpm9 = rp%9 + 9
+		}
+		var p10 int32 = _sp10s[8-rpm9]
+		var carry uint32_t = uint32_t(0)
+		for k = a; k != z; k++ {
+			var tmp uint32_t = *(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) % uint32_t(p10)
+			*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) = *(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4))/uint32_t(p10) + carry
+			carry = uint32_t(1000000000/p10) * tmp
+			if k == a && !(int32(*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4))) != 0) {
+				a = (a + 1) & (128 - 1)
+				rp = rp - 9
+			}
+		}
+		if carry != 0 {
+			*(*uint32_t)(unsafe.Pointer(bp + uintptr(PostIncInt32(&z, 1))*4)) = carry
+		}
+		rp = rp + (9 - rpm9)
+	}
+
+	// Upscale until desired number of bits are left of radix point
+	for rp < 9*2 || rp == 9*2 && *(*uint32_t)(unsafe.Pointer(bp + uintptr(a)*4)) < _sth[0] {
+		var carry uint32_t = uint32_t(0)
+		e2 = e2 - 29
+		for k = (z - 1) & (128 - 1); ; k = (k - 1) & (128 - 1) {
+			var tmp uint64_t = uint64_t(*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)))<<29 + uint64_t(carry)
+			if tmp > uint64(1000000000) {
+				carry = uint32_t(tmp / uint64(1000000000))
+				*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) = uint32_t(tmp % uint64(1000000000))
+			} else {
+				carry = uint32_t(0)
+				*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) = uint32_t(tmp)
+			}
+			if k == (z-1)&(128-1) && k != a && !(int32(*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4))) != 0) {
+				z = k
+			}
+			if k == a {
+				break
+			}
+		}
+		if carry != 0 {
+			rp = rp + 9
+			a = (a - 1) & (128 - 1)
+			if a == z {
+				z = (z - 1) & (128 - 1)
+				*(*uint32_t)(unsafe.Pointer(bp + uintptr((z-1)&(128-1))*4)) |= *(*uint32_t)(unsafe.Pointer(bp + uintptr(z)*4))
+			}
+			*(*uint32_t)(unsafe.Pointer(bp + uintptr(a)*4)) = carry
+		}
+	}
+
+	// Downscale until exactly number of bits are left of radix point
+	for {
+		var carry uint32_t = uint32_t(0)
+		var sh int32 = 1
+		for i = 0; i < 2; i++ {
+			k = (a + i) & (128 - 1)
+			if k == z || *(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) < _sth[i] {
+				i = 2
+				break
+			}
+			if *(*uint32_t)(unsafe.Pointer(bp + uintptr((a+i)&(128-1))*4)) > _sth[i] {
+				break
+			}
+		}
+		if i == 2 && rp == 9*2 {
+			break
+		}
+		// FIXME: find a way to compute optimal sh
+		if rp > 9+9*2 {
+			sh = 9
+		}
+		e2 = e2 + sh
+		for k = a; k != z; k = (k + 1) & (128 - 1) {
+			var tmp uint32_t = *(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) & uint32_t(int32(1)<<sh-1)
+			*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4)) = *(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4))>>sh + carry
+			carry = uint32_t(int32(1000000000)>>sh) * tmp
+			if k == a && !(int32(*(*uint32_t)(unsafe.Pointer(bp + uintptr(k)*4))) != 0) {
+				a = (a + 1) & (128 - 1)
+				i--
+				rp = rp - 9
+			}
+		}
+		if carry != 0 {
+			if (z+1)&(128-1) != a {
+				*(*uint32_t)(unsafe.Pointer(bp + uintptr(z)*4)) = carry
+				z = (z + 1) & (128 - 1)
+			} else {
+				*(*uint32_t)(unsafe.Pointer(bp + uintptr((z-1)&(128-1))*4)) |= uint32_t(1)
+			}
+		}
+	}
+
+	// Assemble desired bits into floating point variable
+	for y = float64(AssignInt32(&i, 0)); i < 2; i++ {
+		if (a+i)&(128-1) == z {
+			*(*uint32_t)(unsafe.Pointer(bp + uintptr(AssignInt32(&z, (z+1)&(128-1))-1)*4)) = uint32_t(0)
+		}
+		y = 1000000000.0*y + float64(*(*uint32_t)(unsafe.Pointer(bp + uintptr((a+i)&(128-1))*4)))
+	}
+
+	y = y * float64(sign)
+
+	// Limit precision for denormal results
+	if bits > 53+e2-emin {
+		bits = 53 + e2 - emin
+		if bits < 0 {
+			bits = 0
+		}
+		denormal = 1
+	}
+
+	// Calculate bias term to force rounding, move out lower bits
+	if bits < 53 {
+		bias = Xcopysignl(tls, Xscalbn(tls, float64(1), 2*53-bits-1), y)
+		frac = Xfmodl(tls, y, Xscalbn(tls, float64(1), 53-bits))
+		y = y - frac
+		y = y + bias
+	}
+
+	// Process tail of decimal input so it can affect rounding
+	if (a+i)&(128-1) != z {
+		var t uint32_t = *(*uint32_t)(unsafe.Pointer(bp + uintptr((a+i)&(128-1))*4))
+		if t < uint32_t(500000000) && (t != 0 || (a+i+1)&(128-1) != z) {
+			frac = frac + 0.25*float64(sign)
+		} else if t > uint32_t(500000000) {
+			frac = frac + 0.75*float64(sign)
+		} else if t == uint32_t(500000000) {
+			if (a+i+1)&(128-1) == z {
+				frac = frac + 0.5*float64(sign)
+			} else {
+				frac = frac + 0.75*float64(sign)
+			}
+		}
+		if 53-bits >= 2 && !(Xfmodl(tls, frac, float64(1)) != 0) {
+			frac += 1
+		}
+	}
+
+	y = y + frac
+	y = y - bias
+
+	if (e2+53)&0x7fffffff > emax-5 {
+		if Xfabsl(tls, y) >= float64(float64(2))/2.22044604925031308085e-16 {
+			if denormal != 0 && bits == 53+e2-emin {
+				denormal = 0
+			}
+			y = y * 0.5
+			e2++
+		}
+		if e2+53 > emax || denormal != 0 && frac != 0 {
+			*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+		}
+	}
+
+	return Xscalbnl(tls, y, e2)
+}
+
+var _sth = [2]uint32_t{uint32_t(9007199), uint32_t(254740991)} /* floatscan.c:67:24 */
+var _sp10s = [8]int32{10, 100, 1000, 10000,
+	100000, 1000000, 10000000, 100000000} /* floatscan.c:80:19 */
+
+func hexfloat(tls *TLS, f uintptr, bits int32, emin int32, sign int32, pok int32) float64 { /* floatscan.c:315:20: */
+	var x uint32_t = uint32_t(0)
+	var y float64 = float64(0)
+	var scale float64 = float64(1)
+	var bias float64 = float64(0)
+	var gottail int32 = 0
+	var gotrad int32 = 0
+	var gotdig int32 = 0
+	var rp int64 = int64(0)
+	var dc int64 = int64(0)
+	var e2 int64 = int64(0)
+	var d int32
+	var c int32
+
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+
+	// Skip leading zeros
+	for ; c == '0'; c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() {
+		gotdig = 1
+	}
+
+	if c == '.' {
+		gotrad = 1
+		c = func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}()
+		// Count zeros after the radix point before significand
+		rp = int64(0)
+	__1:
+		if !(c == '0') {
+			goto __3
+		}
+		gotdig = 1
+		goto __2
+	__2:
+		c = func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}()
+		rp--
+		goto __1
+		goto __3
+	__3:
+	}
+
+	for ; uint32(c-'0') < 10 || uint32(c|32-'a') < 6 || c == '.'; c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() {
+		if c == '.' {
+			if gotrad != 0 {
+				break
+			}
+			rp = dc
+			gotrad = 1
+		} else {
+			gotdig = 1
+			if c > '9' {
+				d = c | 32 + 10 - 'a'
+			} else {
+				d = c - '0'
+			}
+			if dc < int64(8) {
+				x = x*uint32_t(16) + uint32_t(d)
+			} else if dc < int64(53/4+1) {
+				y = y + float64(d)*AssignDivFloat64(&scale, float64(16))
+			} else if d != 0 && !(gottail != 0) {
+				y = y + 0.5*scale
+				gottail = 1
+			}
+			dc++
+		}
+	}
+	if !(gotdig != 0) {
+		if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+			(*FILE)(unsafe.Pointer(f)).rpos--
+		} else {
+		}
+		if pok != 0 {
+			if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+				(*FILE)(unsafe.Pointer(f)).rpos--
+			} else {
+			}
+			if gotrad != 0 {
+				if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+					(*FILE)(unsafe.Pointer(f)).rpos--
+				} else {
+				}
+			}
+		} else {
+			X__shlim(tls, f, int64(0))
+		}
+		return float64(sign) * 0.0
+	}
+	if !(gotrad != 0) {
+		rp = dc
+	}
+	for dc < int64(8) {
+		x = x * uint32_t(16)
+		dc++
+	}
+	if c|32 == 'p' {
+		e2 = scanexp(tls, f, pok)
+		if e2 == -0x7fffffffffffffff-int64(1) {
+			if pok != 0 {
+				if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+					(*FILE)(unsafe.Pointer(f)).rpos--
+				} else {
+				}
+			} else {
+				X__shlim(tls, f, int64(0))
+				return float64(0)
+			}
+			e2 = int64(0)
+		}
+	} else {
+		if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+			(*FILE)(unsafe.Pointer(f)).rpos--
+		} else {
+		}
+	}
+	e2 = e2 + (int64(4)*rp - int64(32))
+
+	if !(x != 0) {
+		return float64(sign) * 0.0
+	}
+	if e2 > int64(-emin) {
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+		return float64(sign) * 1.79769313486231570815e+308 * 1.79769313486231570815e+308
+	}
+	if e2 < int64(emin-2*53) {
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+		return float64(sign) * 2.22507385850720138309e-308 * 2.22507385850720138309e-308
+	}
+
+	for x < 0x80000000 {
+		if y >= 0.5 {
+			x = x + (x + uint32_t(1))
+			y = y + (y - float64(1))
+		} else {
+			x = x + x
+			y = y + y
+		}
+		e2--
+	}
+
+	if int64(bits) > int64(32)+e2-int64(emin) {
+		bits = int32(int64(32) + e2 - int64(emin))
+		if bits < 0 {
+			bits = 0
+		}
+	}
+
+	if bits < 53 {
+		bias = Xcopysignl(tls, Xscalbn(tls, float64(1), 32+53-bits-1), float64(sign))
+	}
+
+	if bits < 32 && y != 0 && !(x&uint32_t(1) != 0) {
+		x++
+		y = float64(0)
+	}
+
+	y = bias + float64(sign)*float64(x) + float64(sign)*y
+	y = y - bias
+
+	if !(y != 0) {
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+	}
+
+	return Xscalbnl(tls, y, int32(e2))
+}
+
+func X__floatscan(tls *TLS, f uintptr, prec int32, pok int32) float64 { /* floatscan.c:427:13: */
+	var sign int32 = 1
+	var i size_t
+	var bits int32
+	var emin int32
+	var c int32
+
+	switch prec {
+	case 0:
+		bits = 24
+		emin = -125 - bits
+		break
+	case 1:
+		bits = 53
+		emin = -1021 - bits
+		break
+	case 2:
+		bits = 53
+		emin = -1021 - bits
+		break
+	default:
+		return float64(0)
+	}
+
+	for __isspace(tls, AssignInt32(&c, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}())) != 0 {
+	}
+
+	if c == '+' || c == '-' {
+		sign = sign - 2*Bool32(c == '-')
+		c = func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}()
+	}
+
+	for i = uint64(0); i < uint64(8) && c|32 == int32(*(*uint8)(unsafe.Pointer(ts /* "infinity" */ + uintptr(i)))); i++ {
+		if i < uint64(7) {
+			c = func() int32 {
+				if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+					return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+				}
+				return X__shgetc(tls, f)
+			}()
+		}
+	}
+	if i == uint64(3) || i == uint64(8) || i > uint64(3) && pok != 0 {
+		if i != uint64(8) {
+			if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+				(*FILE)(unsafe.Pointer(f)).rpos--
+			} else {
+			}
+			if pok != 0 {
+				for ; i > uint64(3); i-- {
+					if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+						(*FILE)(unsafe.Pointer(f)).rpos--
+					} else {
+					}
+				}
+			}
+		}
+		return float64(float32(sign) * X__builtin_inff(tls))
+	}
+	if !(i != 0) {
+		for i = uint64(0); i < uint64(3) && c|32 == int32(*(*uint8)(unsafe.Pointer(ts + 9 /* "nan" */ + uintptr(i)))); i++ {
+			if i < uint64(2) {
+				c = func() int32 {
+					if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+						return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+					}
+					return X__shgetc(tls, f)
+				}()
+			}
+		}
+	}
+	if i == uint64(3) {
+		if func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}() != '(' {
+			if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+				(*FILE)(unsafe.Pointer(f)).rpos--
+			} else {
+			}
+			return float64(X__builtin_nanf(tls, ts+13))
+		}
+		for i = uint64(1); ; i++ {
+			c = func() int32 {
+				if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+					return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+				}
+				return X__shgetc(tls, f)
+			}()
+			if uint32(c-'0') < 10 || uint32(c-'A') < 26 || uint32(c-'a') < 26 || c == '_' {
+				continue
+			}
+			if c == ')' {
+				return float64(X__builtin_nanf(tls, ts+13))
+			}
+			if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+				(*FILE)(unsafe.Pointer(f)).rpos--
+			} else {
+			}
+			if !(pok != 0) {
+				*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 22
+				X__shlim(tls, f, int64(0))
+				return float64(0)
+			}
+			for PostDecUint64(&i, 1) != 0 {
+				if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+					(*FILE)(unsafe.Pointer(f)).rpos--
+				} else {
+				}
+			}
+			return float64(X__builtin_nanf(tls, ts+13))
+		}
+		return float64(X__builtin_nanf(tls, ts+13))
+	}
+
+	if i != 0 {
+		if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+			(*FILE)(unsafe.Pointer(f)).rpos--
+		} else {
+		}
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 22
+		X__shlim(tls, f, int64(0))
+		return float64(0)
+	}
+
+	if c == '0' {
+		c = func() int32 {
+			if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+				return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+			}
+			return X__shgetc(tls, f)
+		}()
+		if c|32 == 'x' {
+			return hexfloat(tls, f, bits, emin, sign, pok)
+		}
+		if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+			(*FILE)(unsafe.Pointer(f)).rpos--
+		} else {
+		}
+		c = '0'
+	}
+
+	return decfloat(tls, f, c, bits, emin, sign, pok)
+}
+
+// Lookup table for digit values. -1==255>=36 -> invalid
+var table1 = [257]uint8{Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	uint8(0), uint8(1), uint8(2), uint8(3), uint8(4), uint8(5), uint8(6), uint8(7), uint8(8), uint8(9), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), uint8(10), uint8(11), uint8(12), uint8(13), uint8(14), uint8(15), uint8(16), uint8(17), uint8(18), uint8(19), uint8(20), uint8(21), uint8(22), uint8(23), uint8(24),
+	uint8(25), uint8(26), uint8(27), uint8(28), uint8(29), uint8(30), uint8(31), uint8(32), uint8(33), uint8(34), uint8(35), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), uint8(10), uint8(11), uint8(12), uint8(13), uint8(14), uint8(15), uint8(16), uint8(17), uint8(18), uint8(19), uint8(20), uint8(21), uint8(22), uint8(23), uint8(24),
+	uint8(25), uint8(26), uint8(27), uint8(28), uint8(29), uint8(30), uint8(31), uint8(32), uint8(33), uint8(34), uint8(35), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+	Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1), Uint8FromInt32(-1),
+} /* intscan.c:7:28 */
+
+func X__intscan(tls *TLS, f uintptr, base uint32, pok int32, lim uint64) uint64 { /* intscan.c:26:20: */
+	var val uintptr
+	var c int32
+	var neg int32
+	var x uint32
+	var y uint64
+	var bs int32
+	val = uintptr(unsafe.Pointer(&table1)) + uintptr(1)
+	neg = 0
+	if !(base > uint32(36) || base == uint32(1)) {
+		goto __1
+	}
+	*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 22
+	return uint64(0)
+__1:
+	;
+__2:
+	if !(__isspace(tls, AssignInt32(&c, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}())) != 0) {
+		goto __3
+	}
+	goto __2
+__3:
+	;
+	if !(c == '+' || c == '-') {
+		goto __4
+	}
+	neg = -Bool32(c == '-')
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+__4:
+	;
+	if !((base == uint32(0) || base == uint32(16)) && c == '0') {
+		goto __5
+	}
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	if !(c|32 == 'x') {
+		goto __7
+	}
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	if !(int32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) >= 16) {
+		goto __9
+	}
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	if !(pok != 0) {
+		goto __10
+	}
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	goto __11
+__10:
+	X__shlim(tls, f, int64(0))
+__11:
+	;
+	return uint64(0)
+__9:
+	;
+	base = uint32(16)
+	goto __8
+__7:
+	if !(base == uint32(0)) {
+		goto __12
+	}
+	base = uint32(8)
+__12:
+	;
+__8:
+	;
+	goto __6
+__5:
+	if !(base == uint32(0)) {
+		goto __13
+	}
+	base = uint32(10)
+__13:
+	;
+	if !(uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) >= base) {
+		goto __14
+	}
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	X__shlim(tls, f, int64(0))
+	*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 22
+	return uint64(0)
+__14:
+	;
+__6:
+	;
+	if !(base == uint32(10)) {
+		goto __15
+	}
+	x = uint32(0)
+__17:
+	if !(uint32(c-'0') < 10 && x <= 0xffffffff/uint32(10)-uint32(1)) {
+		goto __19
+	}
+	x = x*uint32(10) + uint32(c-'0')
+	goto __18
+__18:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	goto __17
+	goto __19
+__19:
+	;
+	y = uint64(x)
+__20:
+	if !(uint32(c-'0') < 10 && y <= (2*uint64(0x7fffffffffffffff)+uint64(1))/uint64(10) && uint64(10)*y <= 2*uint64(0x7fffffffffffffff)+uint64(1)-uint64(c-'0')) {
+		goto __22
+	}
+	y = y*uint64(10) + uint64(c-'0')
+	goto __21
+__21:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	goto __20
+	goto __22
+__22:
+	;
+	if !(uint32(c-'0') >= 10) {
+		goto __23
+	}
+	goto done
+__23:
+	;
+	goto __16
+__15:
+	if !!(base&(base-uint32(1)) != 0) {
+		goto __24
+	}
+	bs = int32(*(*uint8)(unsafe.Pointer(ts + 14 + uintptr(uint32(0x17)*base>>5&uint32(7)))))
+	x = uint32(0)
+__26:
+	if !(uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) < base && x <= 0xffffffff/uint32(32)) {
+		goto __28
+	}
+	x = x<<bs | uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c))))
+	goto __27
+__27:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	goto __26
+	goto __28
+__28:
+	;
+	y = uint64(x)
+__29:
+	if !(uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) < base && y <= uint64(2*uint64(0x7fffffffffffffff)+uint64(1))>>bs) {
+		goto __31
+	}
+	y = y<<bs | uint64(*(*uint8)(unsafe.Pointer(val + uintptr(c))))
+	goto __30
+__30:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	goto __29
+	goto __31
+__31:
+	;
+	goto __25
+__24:
+	x = uint32(0)
+__32:
+	if !(uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) < base && x <= 0xffffffff/uint32(36)-uint32(1)) {
+		goto __34
+	}
+	x = x*base + uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c))))
+	goto __33
+__33:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	goto __32
+	goto __34
+__34:
+	;
+	y = uint64(x)
+__35:
+	if !(uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) < base && y <= (2*uint64(0x7fffffffffffffff)+uint64(1))/uint64(base) && uint64(base)*y <= 2*uint64(0x7fffffffffffffff)+uint64(1)-uint64(*(*uint8)(unsafe.Pointer(val + uintptr(c))))) {
+		goto __37
+	}
+	y = y*uint64(base) + uint64(*(*uint8)(unsafe.Pointer(val + uintptr(c))))
+	goto __36
+__36:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	goto __35
+	goto __37
+__37:
+	;
+__25:
+	;
+__16:
+	;
+	if !(uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) < base) {
+		goto __38
+	}
+__39:
+	if !(uint32(*(*uint8)(unsafe.Pointer(val + uintptr(c)))) < base) {
+		goto __41
+	}
+	goto __40
+__40:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+	goto __39
+	goto __41
+__41:
+	;
+	*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+	y = lim
+	if !(lim&uint64(1) != 0) {
+		goto __42
+	}
+	neg = 0
+__42:
+	;
+__38:
+	;
+done:
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	if !(y >= lim) {
+		goto __43
+	}
+	if !(!(lim&uint64(1) != 0) && !(neg != 0)) {
+		goto __44
+	}
+	*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+	return lim - uint64(1)
+	goto __45
+__44:
+	if !(y > lim) {
+		goto __46
+	}
+	*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 34
+	return lim
+__46:
+	;
+__45:
+	;
+__43:
+	;
+	return y ^ uint64(neg) - uint64(neg)
+}
+
+// The shcnt field stores the number of bytes read so far, offset by
+// the value of buf-rpos at the last function call (__shlim or __shgetc),
+// so that between calls the inline shcnt macro can add rpos-buf to get
+// the actual count.
+
+func X__shlim(tls *TLS, f uintptr, lim off_t) { /* shgetc.c:8:6: */
+	(*FILE)(unsafe.Pointer(f)).shlim = lim
+	(*FILE)(unsafe.Pointer(f)).shcnt = (int64((*FILE)(unsafe.Pointer(f)).buf) - int64((*FILE)(unsafe.Pointer(f)).rpos)) / 1
+	// If lim is nonzero, rend must be a valid pointer.
+	if lim != 0 && (int64((*FILE)(unsafe.Pointer(f)).rend)-int64((*FILE)(unsafe.Pointer(f)).rpos))/1 > lim {
+		(*FILE)(unsafe.Pointer(f)).shend = (*FILE)(unsafe.Pointer(f)).rpos + uintptr(lim)
+	} else {
+		(*FILE)(unsafe.Pointer(f)).shend = (*FILE)(unsafe.Pointer(f)).rend
+	}
+}
+
+func X__shgetc(tls *TLS, f uintptr) int32 { /* shgetc.c:19:5: */
+	var c int32
+	var cnt off_t = (*FILE)(unsafe.Pointer(f)).shcnt + (int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1
+	if (*FILE)(unsafe.Pointer(f)).shlim != 0 && cnt >= (*FILE)(unsafe.Pointer(f)).shlim || AssignInt32(&c, X__uflow(tls, f)) < 0 {
+		(*FILE)(unsafe.Pointer(f)).shcnt = (int64((*FILE)(unsafe.Pointer(f)).buf)-int64((*FILE)(unsafe.Pointer(f)).rpos))/1 + cnt
+		(*FILE)(unsafe.Pointer(f)).shend = (*FILE)(unsafe.Pointer(f)).rpos
+		(*FILE)(unsafe.Pointer(f)).shlim = int64(-1)
+		return -1
+	}
+	cnt++
+	if (*FILE)(unsafe.Pointer(f)).shlim != 0 && (int64((*FILE)(unsafe.Pointer(f)).rend)-int64((*FILE)(unsafe.Pointer(f)).rpos))/1 > (*FILE)(unsafe.Pointer(f)).shlim-cnt {
+		(*FILE)(unsafe.Pointer(f)).shend = (*FILE)(unsafe.Pointer(f)).rpos + uintptr((*FILE)(unsafe.Pointer(f)).shlim-cnt)
+	} else {
+		(*FILE)(unsafe.Pointer(f)).shend = (*FILE)(unsafe.Pointer(f)).rend
+	}
+	(*FILE)(unsafe.Pointer(f)).shcnt = (int64((*FILE)(unsafe.Pointer(f)).buf)-int64((*FILE)(unsafe.Pointer(f)).rpos))/1 + cnt
+	if (*FILE)(unsafe.Pointer(f)).rpos <= (*FILE)(unsafe.Pointer(f)).buf {
+		*(*uint8)(unsafe.Pointer((*FILE)(unsafe.Pointer(f)).rpos + UintptrFromInt32(-1))) = uint8(c)
+	}
+	return c
+}
+
+type lconv = struct {
+	decimal_point      uintptr
+	thousands_sep      uintptr
+	grouping           uintptr
+	int_curr_symbol    uintptr
+	currency_symbol    uintptr
+	mon_decimal_point  uintptr
+	mon_thousands_sep  uintptr
+	mon_grouping       uintptr
+	positive_sign      uintptr
+	negative_sign      uintptr
+	int_frac_digits    uint8
+	frac_digits        uint8
+	p_cs_precedes      uint8
+	p_sep_by_space     uint8
+	n_cs_precedes      uint8
+	n_sep_by_space     uint8
+	p_sign_posn        uint8
+	n_sign_posn        uint8
+	int_p_cs_precedes  uint8
+	int_p_sep_by_space uint8
+	int_n_cs_precedes  uint8
+	int_n_sep_by_space uint8
+	int_p_sign_posn    uint8
+	int_n_sign_posn    uint8
+	_                  [2]byte
+} /* locale.h:24:1 */
+
+// Support signed or unsigned plain-char
+
+// Implementation choices...
+
+// Arbitrary numbers...
+
+// POSIX/SUS requirements follow. These numbers come directly
+// from SUS and have nothing to do with the host system.
+
+var posix_lconv = lconv{decimal_point: ts + 23, thousands_sep: ts + 13, grouping: ts + 13, int_curr_symbol: ts + 13, currency_symbol: ts + 13, mon_decimal_point: ts + 13, mon_thousands_sep: ts + 13, mon_grouping: ts + 13, positive_sign: ts + 13, negative_sign: ts + 13, int_frac_digits: uint8(255), frac_digits: uint8(255), p_cs_precedes: uint8(255), p_sep_by_space: uint8(255), n_cs_precedes: uint8(255), n_sep_by_space: uint8(255), p_sign_posn: uint8(255), n_sign_posn: uint8(255), int_p_cs_precedes: uint8(255), int_p_sep_by_space: uint8(255), int_n_cs_precedes: uint8(255), int_n_sep_by_space: uint8(255), int_p_sign_posn: uint8(255), int_n_sign_posn: uint8(255)} /* localeconv.c:4:27 */
+
+func Xlocaleconv(tls *TLS) uintptr { /* localeconv.c:31:14: */
+	return uintptr(unsafe.Pointer(&posix_lconv))
+}
+
+func X__fpclassify(tls *TLS, x float64) int32 { /* __fpclassify.c:4:5: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	*(*struct{ f float64 })(unsafe.Pointer(bp)) = func() (r struct{ f float64 }) {
+		*(*float64)(unsafe.Pointer(uintptr(unsafe.Pointer(&r)) + 0)) = x
+		return r
+	}()
+	var e int32 = int32(*(*uint64_t)(unsafe.Pointer(bp)) >> 52 & uint64(0x7ff))
+	if !(e != 0) {
+		if *(*uint64_t)(unsafe.Pointer(bp))<<1 != 0 {
+			return 3
+		}
+		return 2
+	}
+	if e == 0x7ff {
+		if *(*uint64_t)(unsafe.Pointer(bp))<<12 != 0 {
+			return 0
+		}
+		return 1
+	}
+	return 4
+}
+
+func X__fpclassifyf(tls *TLS, x float32) int32 { /* __fpclassifyf.c:4:5: */
+	bp := tls.Alloc(4)
+	defer tls.Free(4)
+
+	*(*struct{ f float32 })(unsafe.Pointer(bp)) = func() (r struct{ f float32 }) {
+		*(*float32)(unsafe.Pointer(uintptr(unsafe.Pointer(&r)) + 0)) = x
+		return r
+	}()
+	var e int32 = int32(*(*uint32_t)(unsafe.Pointer(bp)) >> 23 & uint32_t(0xff))
+	if !(e != 0) {
+		if *(*uint32_t)(unsafe.Pointer(bp))<<1 != 0 {
+			return 3
+		}
+		return 2
+	}
+	if e == 0xff {
+		if *(*uint32_t)(unsafe.Pointer(bp))<<9 != 0 {
+			return 0
+		}
+		return 1
+	}
+	return 4
+}
+
+func X__fpclassifyl(tls *TLS, x float64) int32 { /* __fpclassifyl.c:4:5: */
+	return X__fpclassify(tls, x)
+}
+
+func Xcopysignl(tls *TLS, x float64, y float64) float64 { /* copysignl.c:4:13: */
+	return Xcopysign(tls, x, y)
+}
+
+func Xfabsl(tls *TLS, x float64) float64 { /* fabsl.c:3:13: */
+	return Xfabs(tls, x)
+}
+
+func Xfmodl(tls *TLS, x float64, y float64) float64 { /* fmodl.c:4:13: */
+	return Xfmod(tls, x, y)
+}
+
+func Xnanf(tls *TLS, s uintptr) float32 { /* nanf.c:3:7: */
+	return X__builtin_nanf(tls, ts+13)
+}
+
+var toint double_t = float64(float64(1)) / 2.22044604925031308085e-16 /* rint.c:10:23 */
+
+func Xrint(tls *TLS, x float64) float64 { /* rint.c:12:8: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	*(*struct{ f float64 })(unsafe.Pointer(bp)) = func() (r struct{ f float64 }) {
+		*(*float64)(unsafe.Pointer(uintptr(unsafe.Pointer(&r)) + 0)) = x
+		return r
+	}()
+	var e int32 = int32(*(*uint64_t)(unsafe.Pointer(bp)) >> 52 & uint64(0x7ff))
+	var s int32 = int32(*(*uint64_t)(unsafe.Pointer(bp)) >> 63)
+	var y double_t
+
+	if e >= 0x3ff+52 {
+		return x
+	}
+	if s != 0 {
+		y = x - toint + toint
+	} else {
+		y = x + toint - toint
+	}
+	if y == float64(0) {
+		if s != 0 {
+			return -Float64FromFloat64(0.0)
+		}
+		return float64(0)
+	}
+	return y
+}
+
+func Xscalbn(tls *TLS, x float64, n int32) float64 { /* scalbn.c:4:8: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	// var u struct {f float64;} at bp, 8
+
+	var y double_t = x
+
+	if n > 1023 {
+		y = y * 0x1p1023
+		n = n - 1023
+		if n > 1023 {
+			y = y * 0x1p1023
+			n = n - 1023
+			if n > 1023 {
+				n = 1023
+			}
+		}
+	} else if n < -1022 {
+		// make sure final n < -53 to avoid double
+		// 		   rounding in the subnormal range
+		y = y * (float64(0x1p-1022) * 0x1p53)
+		n = n + (1022 - 53)
+		if n < -1022 {
+			y = y * (float64(0x1p-1022) * 0x1p53)
+			n = n + (1022 - 53)
+			if n < -1022 {
+				n = -1022
+			}
+		}
+	}
+	*(*uint64_t)(unsafe.Pointer(bp)) = uint64_t(0x3ff+n) << 52
+	x = y * *(*float64)(unsafe.Pointer(bp))
+	return x
+}
+
+func Xscalbnl(tls *TLS, x float64, n int32) float64 { /* scalbnl.c:4:13: */
+	return Xscalbn(tls, x, n)
+}
+
+// Support signed or unsigned plain-char
+
+// Implementation choices...
+
+// Arbitrary numbers...
+
+// POSIX/SUS requirements follow. These numbers come directly
+// from SUS and have nothing to do with the host system.
+
+type __locale_map = struct {
+	__map    uintptr
+	map_size size_t
+	name     [24]uint8
+	next     uintptr
+} /* alltypes.h:341:9 */
+
+type tls_module = struct {
+	next   uintptr
+	image  uintptr
+	len    size_t
+	size   size_t
+	align  size_t
+	offset size_t
+} /* libc.h:14:1 */
+
+type __libc = struct {
+	can_do_threads  uint8
+	threaded        uint8
+	secure          uint8
+	need_locks      int8
+	threads_minus_1 int32
+	auxv            uintptr
+	tls_head        uintptr
+	tls_size        size_t
+	tls_align       size_t
+	tls_cnt         size_t
+	page_size       size_t
+	global_locale   struct{ cat [6]uintptr }
+} /* libc.h:20:1 */
+
+type time_t = int64 /* alltypes.h:83:16 */
+
+type clockid_t = int32 /* alltypes.h:212:13 */
+
+type timespec = struct {
+	tv_sec  time_t
+	tv_nsec int64
+} /* alltypes.h:227:1 */
+
+type pthread_t = uintptr /* alltypes.h:271:26 */
+
+type pthread_once_t = int32 /* alltypes.h:277:13 */
+
+type pthread_key_t = uint32 /* alltypes.h:282:18 */
+
+type pthread_spinlock_t = int32 /* alltypes.h:287:13 */
+
+type pthread_mutexattr_t = struct{ __attr uint32 } /* alltypes.h:292:37 */
+
+type pthread_condattr_t = struct{ __attr uint32 } /* alltypes.h:297:37 */
+
+type pthread_barrierattr_t = struct{ __attr uint32 } /* alltypes.h:302:37 */
+
+type pthread_rwlockattr_t = struct{ __attr [2]uint32 } /* alltypes.h:307:40 */
+
+type __sigset_t = struct{ __bits [16]uint64 } /* alltypes.h:347:9 */
+
+type sigset_t = __sigset_t /* alltypes.h:347:71 */
+
+type pthread_attr_t = struct {
+	__u struct {
+		_   [0]uint64
+		__i [14]int32
+	}
+} /* alltypes.h:370:147 */
+
+type pthread_mutex_t = struct {
+	__u struct {
+		_   [0]uint64
+		__i [10]int32
+	}
+} /* alltypes.h:375:157 */
+
+type pthread_cond_t = struct {
+	__u struct {
+		_   [0]uint64
+		__i [12]int32
+	}
+} /* alltypes.h:385:112 */
+
+type pthread_rwlock_t = struct {
+	__u struct {
+		_   [0]uint64
+		__i [14]int32
+	}
+} /* alltypes.h:395:139 */
+
+type pthread_barrier_t = struct {
+	__u struct {
+		_   [0]uint64
+		__i [8]int32
+	}
+} /* alltypes.h:400:137 */
+
+type sched_param = struct {
+	sched_priority int32
+	__reserved1    int32
+	__reserved2    [2]struct {
+		__reserved1 time_t
+		__reserved2 int64
+	}
+	__reserved3 int32
+	_           [4]byte
+} /* sched.h:19:1 */
+
+type timer_t = uintptr /* alltypes.h:207:14 */
+
+type clock_t = int64 /* alltypes.h:217:14 */
+
+type tm = struct {
+	tm_sec    int32
+	tm_min    int32
+	tm_hour   int32
+	tm_mday   int32
+	tm_mon    int32
+	tm_year   int32
+	tm_wday   int32
+	tm_yday   int32
+	tm_isdst  int32
+	_         [4]byte
+	tm_gmtoff int64
+	tm_zone   uintptr
+} /* time.h:38:1 */
+
+type itimerspec = struct {
+	it_interval struct {
+		tv_sec  time_t
+		tv_nsec int64
+	}
+	it_value struct {
+		tv_sec  time_t
+		tv_nsec int64
+	}
+} /* time.h:80:1 */
+
+type sigevent = struct {
+	sigev_value struct {
+		_         [0]uint64
+		sival_int int32
+		_         [4]byte
+	}
+	sigev_signo             int32
+	sigev_notify            int32
+	sigev_notify_function   uintptr
+	sigev_notify_attributes uintptr
+	__pad                   [32]uint8
+} /* time.h:107:1 */
+
+type __ptcb = struct {
+	__f    uintptr
+	__x    uintptr
+	__next uintptr
+} /* alltypes.h:271:9 */
+
+type sigaltstack = struct {
+	ss_sp    uintptr
+	ss_flags int32
+	_        [4]byte
+	ss_size  size_t
+} /* signal.h:44:9 */
+
+type stack_t = sigaltstack /* signal.h:44:28 */
+
+type __riscv_mc_f_ext_state = struct {
+	__f    [32]uint32
+	__fcsr uint32
+} /* signal.h:11:1 */
+
+type __riscv_mc_d_ext_state = struct {
+	__f    [32]uint64
+	__fcsr uint32
+	_      [4]byte
+} /* signal.h:16:1 */
+
+type __riscv_mc_q_ext_state = struct {
+	__f        [64]uint64
+	__fcsr     uint32
+	__reserved [3]uint32
+} /* signal.h:21:1 */
+
+type __riscv_mc_fp_state = struct {
+	_   [0]uint64
+	__f struct {
+		__f    [32]uint32
+		__fcsr uint32
+	}
+	_ [396]byte
+} /* signal.h:27:1 */
+
+type mcontext_t1 = struct {
+	__gregs  [32]uint64
+	__fpregs struct {
+		_   [0]uint64
+		__f struct {
+			__f    [32]uint32
+			__fcsr uint32
+		}
+		_ [396]byte
+	}
+} /* signal.h:33:9 */
+
+type mcontext_t = mcontext_t1 /* signal.h:36:3 */
+
+type greg_t = uint64                  /* signal.h:48:23 */
+type gregset_t = [32]uint64           /* signal.h:49:23 */
+type fpregset_t = __riscv_mc_fp_state /* signal.h:50:35 */
+type sigcontext = struct {
+	gregs  gregset_t
+	fpregs fpregset_t
+} /* signal.h:51:1 */
+
+type ucontext_t1 = struct {
+	uc_flags    uint64
+	uc_link     uintptr
+	uc_stack    stack_t
+	uc_sigmask  sigset_t
+	uc_mcontext mcontext_t
+} /* signal.h:63:9 */
+
+type ucontext_t = ucontext_t1 /* signal.h:70:3 */
+
+type sigval = struct {
+	_         [0]uint64
+	sival_int int32
+	_         [4]byte
+} /* time.h:107:1 */
+
+type siginfo_t = struct {
+	si_signo    int32
+	si_errno    int32
+	si_code     int32
+	_           [4]byte
+	__si_fields struct {
+		_     [0]uint64
+		__pad [112]uint8
+	}
+} /* signal.h:145:3 */
+
+type sigaction = struct {
+	__sa_handler struct{ sa_handler uintptr }
+	sa_mask      sigset_t
+	sa_flags     int32
+	_            [4]byte
+	sa_restorer  uintptr
+} /* signal.h:167:1 */
+
+type sig_t = uintptr /* signal.h:251:14 */
+
+type sig_atomic_t = int32 /* signal.h:269:13 */
+
+func a_barrier(tls *TLS) { /* atomic_arch.h:2:20: */
+	panic(`arch/riscv64/atomic_arch.h:4:2: assembler statements not supported`)
+}
+
+func a_cas(tls *TLS, p uintptr, t int32, s int32) int32 { /* atomic_arch.h:8:19: */
+	var old int32
+	var tmp int32
+	_ = tmp
+	panic(`arch/riscv64/atomic_arch.h:11:2: assembler statements not supported`)
+	return old
+}
+
+func a_swap(tls *TLS, p uintptr, v int32) int32 { /* atomic.h:108:19: */
+	var old int32
+	for __ccgo := true; __ccgo; __ccgo = a_cas(tls, p, old, v) != old {
+		old = *(*int32)(unsafe.Pointer(p))
+	}
+	return old
+}
+
+func a_fetch_add(tls *TLS, p uintptr, v int32) int32 { /* atomic.h:119:19: */
+	var old int32
+	for __ccgo := true; __ccgo; __ccgo = a_cas(tls, p, old, int32(uint32(old)+uint32(v))) != old {
+		old = *(*int32)(unsafe.Pointer(p))
+	}
+	return old
+}
+
+func a_fetch_and(tls *TLS, p uintptr, v int32) int32 { /* atomic.h:130:19: */
+	var old int32
+	for __ccgo := true; __ccgo; __ccgo = a_cas(tls, p, old, old&v) != old {
+		old = *(*int32)(unsafe.Pointer(p))
+	}
+	return old
+}
+
+func a_fetch_or(tls *TLS, p uintptr, v int32) int32 { /* atomic.h:140:19: */
+	var old int32
+	for __ccgo := true; __ccgo; __ccgo = a_cas(tls, p, old, old|v) != old {
+		old = *(*int32)(unsafe.Pointer(p))
+	}
+	return old
+}
+
+func a_and(tls *TLS, p uintptr, v int32) { /* atomic.h:151:20: */
+	a_fetch_and(tls, p, v)
+}
+
+func a_or(tls *TLS, p uintptr, v int32) { /* atomic.h:159:20: */
+	a_fetch_or(tls, p, v)
+}
+
+func a_or_64(tls *TLS, p uintptr, v uint64_t) { /* atomic.h:220:20: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	*(*struct{ v uint64_t })(unsafe.Pointer(bp)) = func() (r struct{ v uint64_t }) {
+		*(*uint64_t)(unsafe.Pointer(uintptr(unsafe.Pointer(&r)) + 0)) = v
+		return r
+	}()
+	if *(*uint32_t)(unsafe.Pointer(bp)) != 0 {
+		a_or(tls, p, int32(*(*uint32_t)(unsafe.Pointer(bp))))
+	}
+	if *(*uint32_t)(unsafe.Pointer(bp + 1*4)) != 0 {
+		a_or(tls, p+uintptr(1)*4, int32(*(*uint32_t)(unsafe.Pointer(bp + 1*4))))
+	}
+}
+
+func a_ctz_32(tls *TLS, x uint32_t) int32 { /* atomic.h:256:19: */
+	return int32(_sdebruijn328[x&-x*uint32_t(0x076be629)>>27])
+}
+
+var _sdebruijn328 = [32]uint8{
+	uint8(0), uint8(1), uint8(23), uint8(2), uint8(29), uint8(24), uint8(19), uint8(3), uint8(30), uint8(27), uint8(25), uint8(11), uint8(20), uint8(8), uint8(4), uint8(13),
+	uint8(31), uint8(22), uint8(28), uint8(18), uint8(26), uint8(10), uint8(7), uint8(12), uint8(21), uint8(17), uint8(9), uint8(6), uint8(16), uint8(5), uint8(15), uint8(14),
+} /* atomic.h:261:20 */
+
+func a_ctz_64(tls *TLS, x uint64_t) int32 { /* atomic.h:272:19: */
+	if uint64(unsafe.Sizeof(int64(0))) < uint64(8) {
+		var y uint32_t = uint32_t(x)
+		if !(y != 0) {
+			y = uint32_t(x >> 32)
+			return 32 + a_ctz_32(tls, y)
+		}
+		return a_ctz_32(tls, y)
+	}
+	return int32(_sdebruijn648[uint64(x&-x)*0x022fdd63cc95386d>>58])
+}
+
+var _sdebruijn648 = [64]uint8{
+	uint8(0), uint8(1), uint8(2), uint8(53), uint8(3), uint8(7), uint8(54), uint8(27), uint8(4), uint8(38), uint8(41), uint8(8), uint8(34), uint8(55), uint8(48), uint8(28),
+	uint8(62), uint8(5), uint8(39), uint8(46), uint8(44), uint8(42), uint8(22), uint8(9), uint8(24), uint8(35), uint8(59), uint8(56), uint8(49), uint8(18), uint8(29), uint8(11),
+	uint8(63), uint8(52), uint8(6), uint8(26), uint8(37), uint8(40), uint8(33), uint8(47), uint8(61), uint8(45), uint8(43), uint8(21), uint8(23), uint8(58), uint8(17), uint8(10),
+	uint8(51), uint8(25), uint8(36), uint8(32), uint8(60), uint8(20), uint8(57), uint8(16), uint8(50), uint8(31), uint8(19), uint8(15), uint8(30), uint8(14), uint8(13), uint8(12),
+} /* atomic.h:274:20 */
+
+type __timer = struct {
+	timerid int32
+	_       [4]byte
+	thread  pthread_t
+} /* pthread_impl.h:64:1 */
+
+func __pthread_self(tls *TLS) uintptr { /* pthread_arch.h:1:30: */
+	var tp uintptr
+	panic(`arch/riscv64/pthread_arch.h:4:2: assembler statements not supported`)
+	return tp - uintptr(uint64(unsafe.Sizeof(__pthread{})))
+}
+
+func __wake(tls *TLS, addr uintptr, cnt int32, priv int32) { /* pthread_impl.h:155:20: */
+	if priv != 0 {
+		priv = 128
+	}
+	if cnt < 0 {
+		cnt = 0x7fffffff
+	}
+	_ = Bool32(__syscall3(tls, int64(98), int64(addr), int64(1|priv), int64(cnt)) != int64(-38) || __syscall3(tls, int64(98), int64(addr), int64(1), int64(cnt)) != 0)
+}
+
+func __futexwait(tls *TLS, addr uintptr, val int32, priv int32) { /* pthread_impl.h:162:20: */
+	if priv != 0 {
+		priv = 128
+	}
+	_ = Bool32(__syscall4(tls, int64(98), int64(addr), int64(0|priv), int64(val), int64(0)) != int64(-38) || __syscall4(tls, int64(98), int64(addr), int64(0), int64(val), int64(0)) != 0)
+}
+
+var X__fsmu8 = [51]uint32_t{
+	func() uint32 {
+		if 0x2 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x2)
+	}(), func() uint32 {
+		if 0x3 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x3)
+	}(), func() uint32 {
+		if 0x4 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x4)
+	}(), func() uint32 {
+		if 0x5 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x5)
+	}(), func() uint32 {
+		if 0x6 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x6)
+	}(), func() uint32 {
+		if 0x7 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x7)
+	}(),
+	func() uint32 {
+		if 0x8 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x8)
+	}(), func() uint32 {
+		if 0x9 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x9)
+	}(), func() uint32 {
+		if 0xa < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xa)
+	}(), func() uint32 {
+		if 0xb < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xb)
+	}(), func() uint32 {
+		if 0xc < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xc)
+	}(), func() uint32 {
+		if 0xd < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xd)
+	}(), func() uint32 {
+		if 0xe < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xe)
+	}(), func() uint32 {
+		if 0xf < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xf)
+	}(),
+	func() uint32 {
+		if 0x0+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x0+16)
+	}(), func() uint32 {
+		if 0x1+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x1+16)
+	}(), func() uint32 {
+		if 0x2+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x2+16)
+	}(), func() uint32 {
+		if 0x3+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x3+16)
+	}(), func() uint32 {
+		if 0x4+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x4+16)
+	}(), func() uint32 {
+		if 0x5+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x5+16)
+	}(), func() uint32 {
+		if 0x6+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x6+16)
+	}(), func() uint32 {
+		if 0x7+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x7+16)
+	}(),
+	func() uint32 {
+		if 0x8+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x8+16)
+	}(), func() uint32 {
+		if 0x9+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0x9+16)
+	}(), func() uint32 {
+		if 0xa+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xa+16)
+	}(), func() uint32 {
+		if 0xb+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xb+16)
+	}(), func() uint32 {
+		if 0xc+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xc+16)
+	}(), func() uint32 {
+		if 0xd+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xd+16)
+	}(), func() uint32 {
+		if 0xe+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xe+16)
+	}(), func() uint32 {
+		if 0xf+16 < 2 {
+			return Uint32FromInt32(-1)
+		}
+		return func() uint32 {
+			if Int32(0x80) == Int32(0x80) {
+				return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+			}
+			return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+		}()<<23 | uint32_t(0xf+16)
+	}(),
+	func() uint32 {
+		if 0x0 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x0 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x0), func() uint32 {
+		if 0x1 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x1 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x1), func() uint32 {
+		if 0x2 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x2 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x2), func() uint32 {
+		if 0x3 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x3 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x3), func() uint32 {
+		if 0x4 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x4 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x4), func() uint32 {
+		if 0x5 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x5 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x5), func() uint32 {
+		if 0x6 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x6 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x6), func() uint32 {
+		if 0x7 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x7 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x7),
+	func() uint32 {
+		if 0x8 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x8 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x8), func() uint32 {
+		if 0x9 == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0x9 == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0x9), func() uint32 {
+		if 0xa == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0xa == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0xa), func() uint32 {
+		if 0xb == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0xb == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0xb), func() uint32 {
+		if 0xc == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0xc == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0xc), func() uint32 {
+		if 0xd == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0xd == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0xd), func() uint32 {
+		if 0xe == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0xe == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0xe), func() uint32 {
+		if 0xf == 0 {
+			return func() uint32 {
+				if Int32(0xa0) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0xa0))
+			}() << 23
+		}
+		return func() uint32 {
+			if 0xf == 0xd {
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xa0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}
+			return func() uint32 {
+				if Int32(0x80) == Int32(0x80) {
+					return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+				}
+				return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+			}() << 23
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(0xf),
+	func() uint32 {
+		if 0x0 >= 5 {
+			return uint32(0)
+		}
+		return func() uint32 {
+			if 0x0 == 0 {
+				return func() uint32 {
+					if Int32(0x90) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x90))
+				}() << 23
+			}
+			return func() uint32 {
+				if 0x0 == 4 {
+					return func() uint32 {
+						if Int32(0x80) == Int32(0x80) {
+							return Uint32(Uint32(0x40) - Uint32FromInt32(0x90))
+						}
+						return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+					}() << 23
+				}
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}()
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>12 | uint32_t(0x0), func() uint32 {
+		if 0x1 >= 5 {
+			return uint32(0)
+		}
+		return func() uint32 {
+			if 0x1 == 0 {
+				return func() uint32 {
+					if Int32(0x90) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x90))
+				}() << 23
+			}
+			return func() uint32 {
+				if 0x1 == 4 {
+					return func() uint32 {
+						if Int32(0x80) == Int32(0x80) {
+							return Uint32(Uint32(0x40) - Uint32FromInt32(0x90))
+						}
+						return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+					}() << 23
+				}
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}()
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>12 | uint32_t(0x1), func() uint32 {
+		if 0x2 >= 5 {
+			return uint32(0)
+		}
+		return func() uint32 {
+			if 0x2 == 0 {
+				return func() uint32 {
+					if Int32(0x90) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x90))
+				}() << 23
+			}
+			return func() uint32 {
+				if 0x2 == 4 {
+					return func() uint32 {
+						if Int32(0x80) == Int32(0x80) {
+							return Uint32(Uint32(0x40) - Uint32FromInt32(0x90))
+						}
+						return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+					}() << 23
+				}
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}()
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>12 | uint32_t(0x2), func() uint32 {
+		if 0x3 >= 5 {
+			return uint32(0)
+		}
+		return func() uint32 {
+			if 0x3 == 0 {
+				return func() uint32 {
+					if Int32(0x90) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x90))
+				}() << 23
+			}
+			return func() uint32 {
+				if 0x3 == 4 {
+					return func() uint32 {
+						if Int32(0x80) == Int32(0x80) {
+							return Uint32(Uint32(0x40) - Uint32FromInt32(0x90))
+						}
+						return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+					}() << 23
+				}
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}()
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>12 | uint32_t(0x3), func() uint32 {
+		if 0x4 >= 5 {
+			return uint32(0)
+		}
+		return func() uint32 {
+			if 0x4 == 0 {
+				return func() uint32 {
+					if Int32(0x90) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x90))
+				}() << 23
+			}
+			return func() uint32 {
+				if 0x4 == 4 {
+					return func() uint32 {
+						if Int32(0x80) == Int32(0x80) {
+							return Uint32(Uint32(0x40) - Uint32FromInt32(0x90))
+						}
+						return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+					}() << 23
+				}
+				return func() uint32 {
+					if Int32(0x80) == Int32(0x80) {
+						return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+					}
+					return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+				}() << 23
+			}()
+		}()
+	}() | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>6 | uint32_t(func() uint32 {
+		if Int32(0x80) == Int32(0x80) {
+			return Uint32(Uint32(0x40) - Uint32FromInt32(0xc0))
+		}
+		return Uint32(Uint32(0) - Uint32FromInt32(0x80))
+	}()<<23)>>12 | uint32_t(0x4),
+} /* internal.c:18:16 */
+
+type wint_t = uint32 /* alltypes.h:196:18 */
+
+type wctype_t = uint64 /* alltypes.h:201:23 */
+
+type __mbstate_t = struct {
+	__opaque1 uint32
+	__opaque2 uint32
+} /* alltypes.h:335:9 */
+
+type mbstate_t = __mbstate_t /* alltypes.h:335:63 */
+
+func Xmbrtowc(tls *TLS, wc uintptr, src uintptr, n size_t, st uintptr) size_t { /* mbrtowc.c:6:8: */
+	bp := tls.Alloc(4)
+	defer tls.Free(4)
+
+	var c uint32
+	var s uintptr
+	var N uint32
+	// var dummy wchar_t at bp, 4
+	s = src
+	N = uint32(n)
+
+	if !!(st != 0) {
+		goto __1
+	}
+	st = uintptr(unsafe.Pointer(&_sinternal_state))
+__1:
+	;
+	c = *(*uint32)(unsafe.Pointer(st))
+
+	if !!(s != 0) {
+		goto __2
+	}
+	if !(c != 0) {
+		goto __4
+	}
+	goto ilseq
+__4:
+	;
+	return uint64(0)
+	goto __3
+__2:
+	if !!(wc != 0) {
+		goto __5
+	}
+	wc = bp /* &dummy */
+__5:
+	;
+__3:
+	;
+
+	if !!(n != 0) {
+		goto __6
+	}
+	return Uint64FromInt32(-2)
+__6:
+	;
+	if !!(c != 0) {
+		goto __7
+	}
+	if !(int32(*(*uint8)(unsafe.Pointer(s))) < 0x80) {
+		goto __8
+	}
+	return BoolUint64(!!(AssignPtrInt32(wc, wchar_t(*(*uint8)(unsafe.Pointer(s)))) != 0))
+__8:
+	;
+	if !(func() int32 {
+		if !!(int32(*(*uintptr)(unsafe.Pointer((*__pthread)(unsafe.Pointer(__pthread_self(tls))).locale))) != 0) {
+			return 4
+		}
+		return 1
+	}() == 1) {
+		goto __9
+	}
+	*(*wchar_t)(unsafe.Pointer(wc)) = 0xdfff & int32(int8(*(*uint8)(unsafe.Pointer(s))))
+	return 1
+__9:
+	;
+	if !(uint32(*(*uint8)(unsafe.Pointer(s)))-0xc2 > 0xf4-0xc2) {
+		goto __10
+	}
+	goto ilseq
+__10:
+	;
+	c = X__fsmu8[uint32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&s, 1))))-0xc2]
+	n--
+__7:
+	;
+
+	if !(n != 0) {
+		goto __11
+	}
+	if !((int32(*(*uint8)(unsafe.Pointer(s)))>>3-0x10|(int32(*(*uint8)(unsafe.Pointer(s)))>>3+int32_t(c)>>26))&CplInt32(7) != 0) {
+		goto __12
+	}
+	goto ilseq
+__12:
+	;
+loop:
+	c = c<<6 | uint32(int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&s, 1))))-0x80)
+	n--
+	if !!(c&(uint32(1)<<31) != 0) {
+		goto __13
+	}
+	*(*uint32)(unsafe.Pointer(st)) = uint32(0)
+	*(*wchar_t)(unsafe.Pointer(wc)) = wchar_t(c)
+	return size_t(N) - n
+__13:
+	;
+	if !(n != 0) {
+		goto __14
+	}
+	if !(uint32(*(*uint8)(unsafe.Pointer(s)))-0x80 >= uint32(0x40)) {
+		goto __15
+	}
+	goto ilseq
+__15:
+	;
+	goto loop
+__14:
+	;
+__11:
+	;
+
+	*(*uint32)(unsafe.Pointer(st)) = c
+	return Uint64FromInt32(-2)
+ilseq:
+	*(*uint32)(unsafe.Pointer(st)) = uint32(0)
+	*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 84
+	return Uint64FromInt32(-1)
+}
+
+var _sinternal_state uint32 /* mbrtowc.c:8:18: */
+
+func Xmbsinit(tls *TLS, st uintptr) int32 { /* mbsinit.c:3:5: */
+	return Bool32(!(st != 0) || !(int32(*(*uint32)(unsafe.Pointer(st))) != 0))
+}
+
+type imaxdiv_t = struct {
+	quot intmax_t
+	rem  intmax_t
+} /* inttypes.h:14:40 */
+
+type socklen_t = uint32 /* alltypes.h:359:18 */
+
+type sa_family_t = uint16 /* alltypes.h:364:24 */
+
+type msghdr = struct {
+	msg_name       uintptr
+	msg_namelen    socklen_t
+	_              [4]byte
+	msg_iov        uintptr
+	msg_iovlen     int32
+	__pad1         int32
+	msg_control    uintptr
+	msg_controllen socklen_t
+	__pad2         int32
+	msg_flags      int32
+	_              [4]byte
+} /* socket.h:22:1 */
+
+type cmsghdr = struct {
+	cmsg_len   socklen_t
+	__pad1     int32
+	cmsg_level int32
+	cmsg_type  int32
+} /* socket.h:44:1 */
+
+type linger = struct {
+	l_onoff  int32
+	l_linger int32
+} /* socket.h:74:1 */
+
+type sockaddr = struct {
+	sa_family sa_family_t
+	sa_data   [14]uint8
+} /* socket.h:367:1 */
+
+type sockaddr_storage = struct {
+	ss_family    sa_family_t
+	__ss_padding [118]uint8
+	__ss_align   uint64
+} /* socket.h:372:1 */
+
+type in_port_t = uint16_t                 /* in.h:12:18 */
+type in_addr_t = uint32_t                 /* in.h:13:18 */
+type in_addr = struct{ s_addr in_addr_t } /* in.h:14:1 */
+
+type sockaddr_in = struct {
+	sin_family sa_family_t
+	sin_port   in_port_t
+	sin_addr   struct{ s_addr in_addr_t }
+	sin_zero   [8]uint8_t
+} /* in.h:16:1 */
+
+type in6_addr = struct {
+	__in6_union struct {
+		_         [0]uint32
+		__s6_addr [16]uint8_t
+	}
+} /* in.h:23:1 */
+
+type sockaddr_in6 = struct {
+	sin6_family   sa_family_t
+	sin6_port     in_port_t
+	sin6_flowinfo uint32_t
+	sin6_addr     struct {
+		__in6_union struct {
+			_         [0]uint32
+			__s6_addr [16]uint8_t
+		}
+	}
+	sin6_scope_id uint32_t
+} /* in.h:34:1 */
+
+type ipv6_mreq = struct {
+	ipv6mr_multiaddr struct {
+		__in6_union struct {
+			_         [0]uint32
+			__s6_addr [16]uint8_t
+		}
+	}
+	ipv6mr_interface uint32
+} /* in.h:42:1 */
+
+type ip_opts = struct {
+	ip_dst  struct{ s_addr in_addr_t }
+	ip_opts [40]uint8
+} /* in.h:229:1 */
+
+type ip_mreq = struct {
+	imr_multiaddr struct{ s_addr in_addr_t }
+	imr_interface struct{ s_addr in_addr_t }
+} /* in.h:247:1 */
+
+type ip_mreqn = struct {
+	imr_multiaddr struct{ s_addr in_addr_t }
+	imr_address   struct{ s_addr in_addr_t }
+	imr_ifindex   int32
+} /* in.h:252:1 */
+
+type ip_mreq_source = struct {
+	imr_multiaddr  struct{ s_addr in_addr_t }
+	imr_interface  struct{ s_addr in_addr_t }
+	imr_sourceaddr struct{ s_addr in_addr_t }
+} /* in.h:258:1 */
+
+type ip_msfilter = struct {
+	imsf_multiaddr struct{ s_addr in_addr_t }
+	imsf_interface struct{ s_addr in_addr_t }
+	imsf_fmode     uint32_t
+	imsf_numsrc    uint32_t
+	imsf_slist     [1]struct{ s_addr in_addr_t }
+} /* in.h:264:1 */
+
+type group_req = struct {
+	gr_interface uint32_t
+	_            [4]byte
+	gr_group     struct {
+		ss_family    sa_family_t
+		__ss_padding [118]uint8
+		__ss_align   uint64
+	}
+} /* in.h:275:1 */
+
+type group_source_req = struct {
+	gsr_interface uint32_t
+	_             [4]byte
+	gsr_group     struct {
+		ss_family    sa_family_t
+		__ss_padding [118]uint8
+		__ss_align   uint64
+	}
+	gsr_source struct {
+		ss_family    sa_family_t
+		__ss_padding [118]uint8
+		__ss_align   uint64
+	}
+} /* in.h:280:1 */
+
+type group_filter = struct {
+	gf_interface uint32_t
+	_            [4]byte
+	gf_group     struct {
+		ss_family    sa_family_t
+		__ss_padding [118]uint8
+		__ss_align   uint64
+	}
+	gf_fmode  uint32_t
+	gf_numsrc uint32_t
+	gf_slist  [1]struct {
+		ss_family    sa_family_t
+		__ss_padding [118]uint8
+		__ss_align   uint64
+	}
+} /* in.h:286:1 */
+
+type in_pktinfo = struct {
+	ipi_ifindex  int32
+	ipi_spec_dst struct{ s_addr in_addr_t }
+	ipi_addr     struct{ s_addr in_addr_t }
+} /* in.h:297:1 */
+
+type in6_pktinfo = struct {
+	ipi6_addr struct {
+		__in6_union struct {
+			_         [0]uint32
+			__s6_addr [16]uint8_t
+		}
+	}
+	ipi6_ifindex uint32
+} /* in.h:303:1 */
+
+type ip6_mtuinfo = struct {
+	ip6m_addr struct {
+		sin6_family   sa_family_t
+		sin6_port     in_port_t
+		sin6_flowinfo uint32_t
+		sin6_addr     struct {
+			__in6_union struct {
+				_         [0]uint32
+				__s6_addr [16]uint8_t
+			}
+		}
+		sin6_scope_id uint32_t
+	}
+	ip6m_mtu uint32_t
+} /* in.h:308:1 */
+
+type addrinfo = struct {
+	ai_flags     int32
+	ai_family    int32
+	ai_socktype  int32
+	ai_protocol  int32
+	ai_addrlen   socklen_t
+	_            [4]byte
+	ai_addr      uintptr
+	ai_canonname uintptr
+	ai_next      uintptr
+} /* netdb.h:16:1 */
+
+// Legacy functions follow (marked OBsolete in SUS)
+
+type netent = struct {
+	n_name     uintptr
+	n_aliases  uintptr
+	n_addrtype int32
+	n_net      uint32_t
+} /* netdb.h:62:1 */
+
+type hostent = struct {
+	h_name      uintptr
+	h_aliases   uintptr
+	h_addrtype  int32
+	h_length    int32
+	h_addr_list uintptr
+} /* netdb.h:69:1 */
+
+type servent = struct {
+	s_name    uintptr
+	s_aliases uintptr
+	s_port    int32
+	_         [4]byte
+	s_proto   uintptr
+} /* netdb.h:78:1 */
+
+type protoent = struct {
+	p_name    uintptr
+	p_aliases uintptr
+	p_proto   int32
+	_         [4]byte
+} /* netdb.h:85:1 */
+
+type aibuf = struct {
+	ai struct {
+		ai_flags     int32
+		ai_family    int32
+		ai_socktype  int32
+		ai_protocol  int32
+		ai_addrlen   socklen_t
+		_            [4]byte
+		ai_addr      uintptr
+		ai_canonname uintptr
+		ai_next      uintptr
+	}
+	sa struct {
+		sin struct {
+			sin_family sa_family_t
+			sin_port   in_port_t
+			sin_addr   struct{ s_addr in_addr_t }
+			sin_zero   [8]uint8_t
+		}
+		_ [12]byte
+	}
+	lock [1]int32
+	slot int16
+	ref  int16
+	_    [4]byte
+} /* lookup.h:10:1 */
+
+type sa = struct {
+	sin struct {
+		sin_family sa_family_t
+		sin_port   in_port_t
+		sin_addr   struct{ s_addr in_addr_t }
+		sin_zero   [8]uint8_t
+	}
+	_ [12]byte
+} /* lookup.h:10:1 */
+
+type address = struct {
+	family  int32
+	scopeid uint32
+	addr    [16]uint8_t
+	sortkey int32
+} /* lookup.h:20:1 */
+
+type service = struct {
+	port     uint16_t
+	proto    uint8
+	socktype uint8
+} /* lookup.h:27:1 */
+
+type resolvconf = struct {
+	ns [3]struct {
+		family  int32
+		scopeid uint32
+		addr    [16]uint8_t
+		sortkey int32
+	}
+	nns      uint32
+	attempts uint32
+	ndots    uint32
+	timeout  uint32
+} /* lookup.h:34:1 */
+
+func Xfreeaddrinfo(tls *TLS, p uintptr) { /* freeaddrinfo.c:7:6: */
+	var cnt size_t
+	cnt = uint64(1)
+__1:
+	if !((*addrinfo)(unsafe.Pointer(p)).ai_next != 0) {
+		goto __3
+	}
+	goto __2
+__2:
+	cnt++
+	p = (*addrinfo)(unsafe.Pointer(p)).ai_next
+	goto __1
+	goto __3
+__3:
+	;
+	var b uintptr = p - uintptr(uint64(uintptr(0)))
+	b -= 88 * uintptr((*aibuf)(unsafe.Pointer(b)).slot)
+	//TODO LOCK(b->lock);
+	if !(int32(AssignSubPtrInt16(b+82, int16(cnt))) != 0) {
+		Xfree(tls, b)
+	}
+	//TODO else UNLOCK(b->lock);
+}
+
+func Xgetaddrinfo(tls *TLS, host uintptr, serv uintptr, hint uintptr, res uintptr) int32 { /* getaddrinfo.c:12:5: */
+	bp := tls.Alloc(1608)
+	defer tls.Free(1608)
+
+	// var ports [2]service at bp, 8
+
+	// var addrs [48]address at bp+8, 1344
+
+	// var canon [256]uint8 at bp+1352, 256
+
+	var outcanon uintptr
+	var nservs int32
+	var naddrs int32
+	var nais int32
+	var canon_len int32
+	var i int32
+	var j int32
+	var k int32
+	var family int32 = 0
+	var flags int32 = 0
+	var proto int32 = 0
+	var socktype int32 = 0
+	var out uintptr
+
+	if !(host != 0) && !(serv != 0) {
+		return -2
+	}
+
+	if hint != 0 {
+		family = (*addrinfo)(unsafe.Pointer(hint)).ai_family
+		flags = (*addrinfo)(unsafe.Pointer(hint)).ai_flags
+		proto = (*addrinfo)(unsafe.Pointer(hint)).ai_protocol
+		socktype = (*addrinfo)(unsafe.Pointer(hint)).ai_socktype
+
+		var mask int32 = 0x01 | 0x02 | 0x04 | 0x08 | 0x10 | 0x20 | 0x400
+		if flags&mask != flags {
+			return -1
+		}
+
+		switch family {
+		case 2:
+			fallthrough
+		case 10:
+			fallthrough
+		case 0:
+			break
+			fallthrough
+		default:
+			return -6
+		}
+	}
+
+	if flags&0x20 != 0 {
+		Xabort(tls) //TODO-
+		// 	/* Define the "an address is configured" condition for address
+		// 	 * families via ability to create a socket for the family plus
+		// 	 * routability of the loopback address for the family. */
+		// 	static const struct sockaddr_in lo4 = {
+		// 		.sin_family = AF_INET, .sin_port = 65535,
+		// 		.sin_addr.s_addr = __BYTE_ORDER == __BIG_ENDIAN
+		// 			? 0x7f000001 : 0x0100007f
+		// 	};
+		// 	static const struct sockaddr_in6 lo6 = {
+		// 		.sin6_family = AF_INET6, .sin6_port = 65535,
+		// 		.sin6_addr = IN6ADDR_LOOPBACK_INIT
+		// 	};
+		// 	int tf[2] = { AF_INET, AF_INET6 };
+		// 	const void *ta[2] = { &lo4, &lo6 };
+		// 	socklen_t tl[2] = { sizeof lo4, sizeof lo6 };
+		// 	for (i=0; i<2; i++) {
+		// 		if (family==tf[1-i]) continue;
+		// 		int s = socket(tf[i], SOCK_CLOEXEC|SOCK_DGRAM,
+		// 			IPPROTO_UDP);
+		// 		if (s>=0) {
+		// 			int cs;
+		// 			pthread_setcancelstate(
+		// 				PTHREAD_CANCEL_DISABLE, &cs);
+		// 			int r = connect(s, ta[i], tl[i]);
+		// 			pthread_setcancelstate(cs, 0);
+		// 			close(s);
+		// 			if (!r) continue;
+		// 		}
+		// 		switch (errno) {
+		// 		case EADDRNOTAVAIL:
+		// 		case EAFNOSUPPORT:
+		// 		case EHOSTUNREACH:
+		// 		case ENETDOWN:
+		// 		case ENETUNREACH:
+		// 			break;
+		// 		default:
+		// 			return EAI_SYSTEM;
+		// 		}
+		// 		if (family == tf[i]) return EAI_NONAME;
+		// 		family = tf[1-i];
+		// 	}
+	}
+
+	nservs = X__lookup_serv(tls, bp, serv, proto, socktype, flags)
+	if nservs < 0 {
+		return nservs
+	}
+
+	naddrs = X__lookup_name(tls, bp+8, bp+1352, host, family, flags)
+	if naddrs < 0 {
+		return naddrs
+	}
+
+	nais = nservs * naddrs
+	canon_len = int32(Xstrlen(tls, bp+1352))
+	out = Xcalloc(tls, uint64(1), uint64(nais)*uint64(unsafe.Sizeof(aibuf{}))+uint64(canon_len)+uint64(1))
+	if !(out != 0) {
+		return -10
+	}
+
+	if canon_len != 0 {
+		outcanon = out + uintptr(nais)*88
+		Xmemcpy(tls, outcanon, bp+1352, uint64(canon_len+1))
+	} else {
+		outcanon = uintptr(0)
+	}
+
+	for k = AssignInt32(&i, 0); i < naddrs; i++ {
+		j = 0
+	__1:
+		if !(j < nservs) {
+			goto __3
+		}
+		{
+			(*aibuf)(unsafe.Pointer(out + uintptr(k)*88)).slot = int16(k)
+			//TODO out[k].ai = (struct addrinfo){
+			//TODO 	.ai_family = addrs[i].family,
+			//TODO 	.ai_socktype = ports[j].socktype,
+			//TODO 	.ai_protocol = ports[j].proto,
+			//TODO 	.ai_addrlen = addrs[i].family == AF_INET
+			//TODO 		? sizeof(struct sockaddr_in)
+			//TODO 		: sizeof(struct sockaddr_in6),
+			//TODO 	.ai_addr = (void *)&out[k].sa,
+			//TODO 	.ai_canonname = outcanon };
+			(*aibuf)(unsafe.Pointer(out + uintptr(k)*88)).ai.ai_family = (*address)(unsafe.Pointer(bp + 8 + uintptr(i)*28)).family
+			(*aibuf)(unsafe.Pointer(out + uintptr(k)*88)).ai.ai_socktype = int32((*service)(unsafe.Pointer(bp + uintptr(j)*4)).socktype)
+			(*aibuf)(unsafe.Pointer(out + uintptr(k)*88)).ai.ai_protocol = int32((*service)(unsafe.Pointer(bp + uintptr(j)*4)).proto)
+			(*aibuf)(unsafe.Pointer(out + uintptr(k)*88)).ai.ai_addrlen = func() uint32 {
+				if (*address)(unsafe.Pointer(bp+8+uintptr(i)*28)).family == 2 {
+					return uint32(unsafe.Sizeof(sockaddr_in{}))
+				}
+				return uint32(unsafe.Sizeof(sockaddr_in6{}))
+			}()
+			(*aibuf)(unsafe.Pointer(out + uintptr(k)*88)).ai.ai_addr = out + uintptr(k)*88 + 48
+			(*aibuf)(unsafe.Pointer(out + uintptr(k)*88)).ai.ai_canonname = outcanon
+			if k != 0 {
+				(*aibuf)(unsafe.Pointer(out + uintptr(k-1)*88)).ai.ai_next = out + uintptr(k)*88
+			}
+			switch (*address)(unsafe.Pointer(bp + 8 + uintptr(i)*28)).family {
+			case 2:
+				(*sockaddr_in)(unsafe.Pointer(out + uintptr(k)*88 + 48)).sin_family = sa_family_t(2)
+				(*sockaddr_in)(unsafe.Pointer(out + uintptr(k)*88 + 48)).sin_port = Xhtons(tls, (*service)(unsafe.Pointer(bp+uintptr(j)*4)).port)
+				Xmemcpy(tls, out+uintptr(k)*88+48+4, bp+8+uintptr(i)*28+8, uint64(4))
+				break
+			case 10:
+				(*sockaddr_in6)(unsafe.Pointer(out + uintptr(k)*88 + 48)).sin6_family = sa_family_t(10)
+				(*sockaddr_in6)(unsafe.Pointer(out + uintptr(k)*88 + 48)).sin6_port = Xhtons(tls, (*service)(unsafe.Pointer(bp+uintptr(j)*4)).port)
+				(*sockaddr_in6)(unsafe.Pointer(out + uintptr(k)*88 + 48)).sin6_scope_id = (*address)(unsafe.Pointer(bp + 8 + uintptr(i)*28)).scopeid
+				Xmemcpy(tls, out+uintptr(k)*88+48+8, bp+8+uintptr(i)*28+8, uint64(16))
+				break
+			}
+
+		}
+		goto __2
+	__2:
+		j++
+		k++
+		goto __1
+		goto __3
+	__3:
+	}
+	(*aibuf)(unsafe.Pointer(out)).ref = int16(nais)
+	*(*uintptr)(unsafe.Pointer(res)) = out
+	return 0
+}
+
+type ucred = struct {
+	pid pid_t
+	uid uid_t
+	gid gid_t
+} /* socket.h:57:1 */
+
+type mmsghdr = struct {
+	msg_hdr struct {
+		msg_name       uintptr
+		msg_namelen    socklen_t
+		_              [4]byte
+		msg_iov        uintptr
+		msg_iovlen     int32
+		__pad1         int32
+		msg_control    uintptr
+		msg_controllen socklen_t
+		__pad2         int32
+		msg_flags      int32
+		_              [4]byte
+	}
+	msg_len uint32
+	_       [4]byte
+} /* socket.h:63:1 */
+
+func Xgethostbyaddr(tls *TLS, a uintptr, l socklen_t, af int32) uintptr { /* gethostbyaddr.c:7:16: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	var size size_t = uint64(63)
+	// var res uintptr at bp, 8
+
+	var err int32
+	for __ccgo := true; __ccgo; __ccgo = err == 34 {
+		Xfree(tls, _sh)
+		_sh = Xmalloc(tls, AssignAddUint64(&size, size+uint64(1)))
+		if !(_sh != 0) {
+			*(*int32)(unsafe.Pointer(X__h_errno_location(tls))) = 3
+			return uintptr(0)
+		}
+		err = Xgethostbyaddr_r(tls, a, l, af, _sh,
+			_sh+uintptr(1)*32, size-size_t(unsafe.Sizeof(hostent{})), bp, X__h_errno_location(tls))
+	}
+	if err != 0 {
+		return uintptr(0)
+	}
+	return _sh
+}
+
+var _sh uintptr /* gethostbyaddr.c:9:24: */
+
+func Xgethostbyaddr_r(tls *TLS, a uintptr, l socklen_t, af int32, h uintptr, buf uintptr, buflen size_t, res uintptr, err uintptr) int32 { /* gethostbyaddr_r.c:10:5: */
+	bp := tls.Alloc(28)
+	defer tls.Free(28)
+
+	//TODO union {
+	//TODO 	struct sockaddr_in sin;
+	//TODO 	struct sockaddr_in6 sin6;
+	//TODO } sa = { .sin.sin_family = af };
+	*(*struct {
+		sin sockaddr_in
+		_   [12]byte
+	})(unsafe.Pointer(bp)) = struct {
+		sin sockaddr_in
+		_   [12]byte
+	}{} //TODO-
+	(*sockaddr_in)(unsafe.Pointer(bp)).sin_family = sa_family_t(af) //TODO-
+	var sl socklen_t
+	if af == 10 {
+		sl = uint32(unsafe.Sizeof(sockaddr_in6{}))
+	} else {
+		sl = uint32(unsafe.Sizeof(sockaddr_in{}))
+	}
+	var i int32
+
+	*(*uintptr)(unsafe.Pointer(res)) = uintptr(0)
+
+	// Load address argument into sockaddr structure
+	if af == 10 && l == socklen_t(16) {
+		Xmemcpy(tls, bp+8, a, uint64(16))
+	} else if af == 2 && l == socklen_t(4) {
+		Xmemcpy(tls, bp+4, a, uint64(4))
+	} else {
+		*(*int32)(unsafe.Pointer(err)) = 3
+		return 22
+	}
+
+	// Align buffer and check for space for pointers and ip address
+	i = int32(uintptr_t(buf) & (uint64(unsafe.Sizeof(uintptr(0))) - uint64(1)))
+	if !(i != 0) {
+		i = int32(unsafe.Sizeof(uintptr(0)))
+	}
+	if buflen <= uint64(5)*uint64(unsafe.Sizeof(uintptr(0)))-uint64(i)+uint64(l) {
+		return 34
+	}
+	buf += uintptr(uint64(unsafe.Sizeof(uintptr(0))) - uint64(i))
+	buflen = buflen - (uint64(5)*uint64(unsafe.Sizeof(uintptr(0))) - uint64(i) + uint64(l))
+
+	(*hostent)(unsafe.Pointer(h)).h_addr_list = buf
+	buf += uintptr(uint64(2) * uint64(unsafe.Sizeof(uintptr(0))))
+	(*hostent)(unsafe.Pointer(h)).h_aliases = buf
+	buf += uintptr(uint64(2) * uint64(unsafe.Sizeof(uintptr(0))))
+
+	*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_addr_list)) = buf
+	Xmemcpy(tls, *(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_addr_list)), a, uint64(l))
+	buf += uintptr(l)
+	*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_addr_list + 1*8)) = uintptr(0)
+	*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases)) = buf
+	*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases + 1*8)) = uintptr(0)
+
+	switch Xgetnameinfo(tls, bp, sl, buf, uint32(buflen), uintptr(0), uint32(0), 0) {
+	case -3:
+		*(*int32)(unsafe.Pointer(err)) = 2
+		return 11
+	case -12:
+		return 34
+	default:
+		fallthrough
+	case -10:
+		fallthrough
+	case -11:
+		fallthrough
+	case -4:
+		*(*int32)(unsafe.Pointer(err)) = 3
+		return *(*int32)(unsafe.Pointer(X___errno_location(tls)))
+	case 0:
+		break
+	}
+
+	(*hostent)(unsafe.Pointer(h)).h_addrtype = af
+	(*hostent)(unsafe.Pointer(h)).h_length = int32(l)
+	(*hostent)(unsafe.Pointer(h)).h_name = *(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases))
+	*(*uintptr)(unsafe.Pointer(res)) = h
+	return 0
+}
+
+func Xgethostbyname(tls *TLS, name uintptr) uintptr { /* gethostbyname.c:8:16: */
+	return Xgethostbyname2(tls, name, 2)
+}
+
+func Xgethostbyname2(tls *TLS, name uintptr, af int32) uintptr { /* gethostbyname2.c:8:16: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	var size size_t = uint64(63)
+	// var res uintptr at bp, 8
+
+	var err int32
+	for __ccgo := true; __ccgo; __ccgo = err == 34 {
+		Xfree(tls, _sh1)
+		_sh1 = Xmalloc(tls, AssignAddUint64(&size, size+uint64(1)))
+		if !(_sh1 != 0) {
+			*(*int32)(unsafe.Pointer(X__h_errno_location(tls))) = 3
+			return uintptr(0)
+		}
+		err = Xgethostbyname2_r(tls, name, af, _sh1,
+			_sh1+uintptr(1)*32, size-size_t(unsafe.Sizeof(hostent{})), bp, X__h_errno_location(tls))
+	}
+	if err != 0 {
+		return uintptr(0)
+	}
+	return _sh1
+}
+
+var _sh1 uintptr /* gethostbyname2.c:10:24: */
+
+func Xgethostbyname2_r(tls *TLS, name uintptr, af int32, h uintptr, buf uintptr, buflen size_t, res uintptr, err uintptr) int32 { /* gethostbyname2_r.c:11:5: */
+	bp := tls.Alloc(1600)
+	defer tls.Free(1600)
+
+	// var addrs [48]address at bp, 1344
+
+	// var canon [256]uint8 at bp+1344, 256
+
+	var i int32
+	var cnt int32
+	var align size_t
+	var need size_t
+
+	*(*uintptr)(unsafe.Pointer(res)) = uintptr(0)
+	cnt = X__lookup_name(tls, bp, bp+1344, name, af, 0x02)
+	if cnt < 0 {
+		switch cnt {
+		case -2:
+			*(*int32)(unsafe.Pointer(err)) = 1
+			return 2
+			fallthrough
+		case -3:
+			*(*int32)(unsafe.Pointer(err)) = 2
+			return 11
+			fallthrough
+		default:
+			fallthrough
+		case -4:
+			*(*int32)(unsafe.Pointer(err)) = 3
+			return 74
+			fallthrough
+		case -10:
+			fallthrough
+		case -11:
+			*(*int32)(unsafe.Pointer(err)) = 3
+			return *(*int32)(unsafe.Pointer(X___errno_location(tls)))
+		}
+	}
+
+	(*hostent)(unsafe.Pointer(h)).h_addrtype = af
+	(*hostent)(unsafe.Pointer(h)).h_length = func() int32 {
+		if af == 10 {
+			return 16
+		}
+		return 4
+	}()
+
+	// Align buffer
+	align = -uintptr_t(buf) & (uint64(unsafe.Sizeof(uintptr(0))) - uint64(1))
+
+	need = uint64(4) * uint64(unsafe.Sizeof(uintptr(0)))
+	need = need + uint64(cnt+1)*(uint64(unsafe.Sizeof(uintptr(0)))+uint64((*hostent)(unsafe.Pointer(h)).h_length))
+	need = need + (Xstrlen(tls, name) + uint64(1))
+	need = need + (Xstrlen(tls, bp+1344) + uint64(1))
+	need = need + align
+
+	if need > buflen {
+		return 34
+	}
+
+	buf += uintptr(align)
+	(*hostent)(unsafe.Pointer(h)).h_aliases = buf
+	buf += uintptr(uint64(3) * uint64(unsafe.Sizeof(uintptr(0))))
+	(*hostent)(unsafe.Pointer(h)).h_addr_list = buf
+	buf += uintptr(uint64(cnt+1) * uint64(unsafe.Sizeof(uintptr(0))))
+
+	for i = 0; i < cnt; i++ {
+		*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_addr_list + uintptr(i)*8)) = buf
+		buf += uintptr((*hostent)(unsafe.Pointer(h)).h_length)
+		Xmemcpy(tls, *(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_addr_list + uintptr(i)*8)), bp+uintptr(i)*28+8, uint64((*hostent)(unsafe.Pointer(h)).h_length))
+	}
+	*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_addr_list + uintptr(i)*8)) = uintptr(0)
+
+	(*hostent)(unsafe.Pointer(h)).h_name = AssignPtrUintptr((*hostent)(unsafe.Pointer(h)).h_aliases, buf)
+	Xstrcpy(tls, (*hostent)(unsafe.Pointer(h)).h_name, bp+1344)
+	buf += uintptr(Xstrlen(tls, (*hostent)(unsafe.Pointer(h)).h_name) + uint64(1))
+
+	if Xstrcmp(tls, (*hostent)(unsafe.Pointer(h)).h_name, name) != 0 {
+		*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases + 1*8)) = buf
+		Xstrcpy(tls, *(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases + 1*8)), name)
+		buf += uintptr(Xstrlen(tls, *(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases + 1*8))) + uint64(1))
+	} else {
+		*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases + 1*8)) = uintptr(0)
+	}
+
+	*(*uintptr)(unsafe.Pointer((*hostent)(unsafe.Pointer(h)).h_aliases + 2*8)) = uintptr(0)
+
+	*(*uintptr)(unsafe.Pointer(res)) = h
+	return 0
+}
+
+func Xgethostbyname_r(tls *TLS, name uintptr, h uintptr, buf uintptr, buflen size_t, res uintptr, err uintptr) int32 { /* gethostbyname_r.c:6:5: */
+	return Xgethostbyname2_r(tls, name, 2, h, buf, buflen, res, err)
+}
+
+type if_nameindex = struct {
+	if_index uint32
+	_        [4]byte
+	if_name  uintptr
+} /* if.h:12:1 */
+
+type ifaddr = struct {
+	ifa_addr struct {
+		sa_family sa_family_t
+		sa_data   [14]uint8
+	}
+	ifa_ifu struct {
+		ifu_broadaddr struct {
+			sa_family sa_family_t
+			sa_data   [14]uint8
+		}
+	}
+	ifa_ifp  uintptr
+	ifa_next uintptr
+} /* if.h:51:1 */
+
+type ifmap = struct {
+	mem_start uint64
+	mem_end   uint64
+	base_addr uint16
+	irq       uint8
+	dma       uint8
+	port      uint8
+	_         [3]byte
+} /* if.h:64:1 */
+
+type ifreq = struct {
+	ifr_ifrn struct{ ifrn_name [16]uint8 }
+	ifr_ifru struct {
+		_         [0]uint64
+		ifru_addr struct {
+			sa_family sa_family_t
+			sa_data   [14]uint8
+		}
+		_ [8]byte
+	}
+} /* if.h:76:1 */
+
+type ifconf = struct {
+	ifc_len  int32
+	_        [4]byte
+	ifc_ifcu struct{ ifcu_buf uintptr }
+} /* if.h:116:1 */
+
+type ns_sect = uint32 /* nameser.h:37:3 */
+
+type __ns_msg = struct {
+	_msg      uintptr
+	_eom      uintptr
+	_id       uint16_t
+	_flags    uint16_t
+	_counts   [4]uint16_t
+	_         [4]byte
+	_sections [4]uintptr
+	_sect     ns_sect
+	_rrnum    int32
+	_msg_ptr  uintptr
+} /* nameser.h:39:9 */
+
+type ns_msg = __ns_msg /* nameser.h:46:3 */
+
+type _ns_flagdata = struct {
+	mask  int32
+	shift int32
+} /* nameser.h:48:1 */
+
+type __ns_rr = struct {
+	name     [1025]uint8
+	_        [1]byte
+	__type   uint16_t
+	rr_class uint16_t
+	_        [2]byte
+	ttl      uint32_t
+	rdlength uint16_t
+	_        [2]byte
+	rdata    uintptr
+} /* nameser.h:59:9 */
+
+type ns_rr = __ns_rr /* nameser.h:66:3 */
+
+type ns_flag = uint32 /* nameser.h:87:3 */
+
+type ns_opcode = uint32 /* nameser.h:96:3 */
+
+type ns_rcode = uint32 /* nameser.h:115:3 */
+
+type ns_update_operation = uint32 /* nameser.h:121:3 */
+
+type ns_tsig_key1 = struct {
+	name [1025]uint8
+	alg  [1025]uint8
+	_    [6]byte
+	data uintptr
+	len  int32
+	_    [4]byte
+} /* nameser.h:123:1 */
+
+type ns_tsig_key = ns_tsig_key1 /* nameser.h:128:28 */
+
+type ns_tcp_tsig_state1 = struct {
+	counter int32
+	_       [4]byte
+	key     uintptr
+	ctx     uintptr
+	sig     [512]uint8
+	siglen  int32
+	_       [4]byte
+} /* nameser.h:130:1 */
+
+type ns_tcp_tsig_state = ns_tcp_tsig_state1 /* nameser.h:137:34 */
+
+type ns_type = uint32 /* nameser.h:200:3 */
+
+type ns_class = uint32 /* nameser.h:219:3 */
+
+type ns_key_types = uint32 /* nameser.h:226:3 */
+
+type ns_cert_types = uint32 /* nameser.h:234:3 */
+
+type HEADER = struct {
+	_       [0]uint32
+	id      uint32 /* unsigned id: 16, unsigned rd: 1, unsigned tc: 1, unsigned aa: 1, unsigned opcode: 4, unsigned qr: 1, unsigned rcode: 4, unsigned cd: 1, unsigned ad: 1, unsigned unused: 1, unsigned ra: 1 */
+	qdcount uint32 /* unsigned qdcount: 16, unsigned ancount: 16 */
+	nscount uint32 /* unsigned nscount: 16, unsigned arcount: 16 */
+} /* nameser.h:353:3 */
+
+// unused; purely for broken apps
+type __res_state = struct {
+	retrans     int32
+	retry       int32
+	options     uint64
+	nscount     int32
+	nsaddr_list [3]struct {
+		sin_family sa_family_t
+		sin_port   in_port_t
+		sin_addr   struct{ s_addr in_addr_t }
+		sin_zero   [8]uint8_t
+	}
+	id        uint16
+	_         [2]byte
+	dnsrch    [7]uintptr
+	defdname  [256]uint8
+	pfcode    uint64
+	ndots     uint32 /* unsigned ndots: 4, unsigned nsort: 4, unsigned ipv6_unavail: 1, unsigned unused: 23 */
+	_         [4]byte
+	sort_list [10]struct {
+		addr struct{ s_addr in_addr_t }
+		mask uint32_t
+	}
+	qhook       uintptr
+	rhook       uintptr
+	res_h_errno int32
+	_vcsock     int32
+	_flags      uint32
+	_           [4]byte
+	_u          struct {
+		_   [0]uint64
+		pad [52]uint8
+		_   [4]byte
+	}
+} /* resolv.h:26:9 */
+
+// unused; purely for broken apps
+type res_state = uintptr /* resolv.h:62:3 */
+
+type res_sym = struct {
+	number    int32
+	_         [4]byte
+	name      uintptr
+	humanname uintptr
+} /* resolv.h:70:1 */
+
+func itoa(tls *TLS, p uintptr, x uint32) uintptr { /* getnameinfo.c:18:13: */
+	p += uintptr(uint64(3) * uint64(unsafe.Sizeof(int32(0))))
+	*(*uint8)(unsafe.Pointer(PreDecUintptr(&p, 1))) = uint8(0)
+	for __ccgo := true; __ccgo; __ccgo = x != 0 {
+		*(*uint8)(unsafe.Pointer(PreDecUintptr(&p, 1))) = uint8(uint32('0') + x%uint32(10))
+		x = x / uint32(10)
+	}
+	return p
+}
+
+func mkptr4(tls *TLS, s uintptr, ip uintptr) { /* getnameinfo.c:28:13: */
+	bp := tls.Alloc(32)
+	defer tls.Free(32)
+
+	Xsprintf(tls, s, ts+25,
+		VaList(bp, int32(*(*uint8)(unsafe.Pointer(ip + 3))), int32(*(*uint8)(unsafe.Pointer(ip + 2))), int32(*(*uint8)(unsafe.Pointer(ip + 1))), int32(*(*uint8)(unsafe.Pointer(ip)))))
+}
+
+func mkptr6(tls *TLS, s uintptr, ip uintptr) { /* getnameinfo.c:34:13: */
+	var i int32
+	for i = 15; i >= 0; i-- {
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&s, 1))) = _sxdigits[int32(*(*uint8)(unsafe.Pointer(ip + uintptr(i))))&15]
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&s, 1))) = uint8('.')
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&s, 1))) = _sxdigits[int32(*(*uint8)(unsafe.Pointer(ip + uintptr(i))))>>4]
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&s, 1))) = uint8('.')
+	}
+	Xstrcpy(tls, s, ts+50)
+}
+
+var _sxdigits = *(*[17]uint8)(unsafe.Pointer(ts + 59)) /* getnameinfo.c:36:20 */
+
+func reverse_hosts(tls *TLS, buf uintptr, a uintptr, scopeid uint32, family int32) { /* getnameinfo.c:45:13: */
+	bp := tls.Alloc(556)
+	defer tls.Free(556)
+
+	// var line [512]uint8 at bp+16, 512
+
+	var p uintptr
+	var z uintptr
+	var _buf [1032]uint8
+	_ = _buf
+	// var atmp [16]uint8 at bp, 16
+
+	// var iplit address at bp+528, 28
+
+	//TODO FILE _f, *f = __fopen_rb_ca("/etc/hosts", &_f, _buf, sizeof _buf);
+	var f uintptr = Xfopen(tls, ts+76, ts+87)
+	if !(f != 0) {
+		return
+	}
+	if family == 2 {
+		Xmemcpy(tls, bp+uintptr(12), a, uint64(4))
+		Xmemcpy(tls, bp, ts+90, uint64(12))
+		a = bp /* &atmp[0] */
+	}
+	for Xfgets(tls, bp+16, int32(unsafe.Sizeof([512]uint8{})), f) != 0 {
+		if AssignUintptr(&p, Xstrchr(tls, bp+16, '#')) != 0 {
+			*(*uint8)(unsafe.Pointer(PostIncUintptr(&p, 1))) = uint8('\n')
+			*(*uint8)(unsafe.Pointer(p)) = uint8(0)
+		}
+
+		for p = bp + 16; /* &line[0] */ *(*uint8)(unsafe.Pointer(p)) != 0 && !(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(p)))) != 0); p++ {
+		}
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&p, 1))) = uint8(0)
+		if X__lookup_ipliteral(tls, bp+528, bp+16, 0) <= 0 {
+			continue
+		}
+
+		if (*address)(unsafe.Pointer(bp+528)).family == 2 {
+			Xmemcpy(tls, bp+528+8+uintptr(12), bp+528+8, uint64(4))
+			Xmemcpy(tls, bp+528+8, ts+90, uint64(12))
+			(*address)(unsafe.Pointer(bp + 528 /* &iplit */)).scopeid = uint32(0)
+		}
+
+		if Xmemcmp(tls, a, bp+528+8, uint64(16)) != 0 || (*address)(unsafe.Pointer(bp+528)).scopeid != scopeid {
+			continue
+		}
+
+		for ; *(*uint8)(unsafe.Pointer(p)) != 0 && __isspace(tls, int32(*(*uint8)(unsafe.Pointer(p)))) != 0; p++ {
+		}
+		for z = p; *(*uint8)(unsafe.Pointer(z)) != 0 && !(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(z)))) != 0); z++ {
+		}
+		*(*uint8)(unsafe.Pointer(z)) = uint8(0)
+		if (int64(z)-int64(p))/1 < int64(256) {
+			Xmemcpy(tls, buf, p, uint64((int64(z)-int64(p))/1+int64(1)))
+			break
+		}
+	}
+	//TODO __fclose_ca(f);
+	Xfclose(tls, f)
+}
+
+func reverse_services(tls *TLS, buf uintptr, port int32, dgram int32) { /* getnameinfo.c:87:13: */
+	Xabort(tls) //TODO-
+	// unsigned long svport;
+	// char line[128], *p, *z;
+	// unsigned char _buf[1032];
+	// FILE _f, *f = __fopen_rb_ca("/etc/services", &_f, _buf, sizeof _buf);
+	// if (!f) return;
+	// while (fgets(line, sizeof line, f)) {
+	// 	if ((p=strchr(line, '#'))) *p++='\n', *p=0;
+
+	// 	for (p=line; *p && !isspace(*p); p++);
+	// 	if (!*p) continue;
+	// 	*p++ = 0;
+	// 	svport = strtoul(p, &z, 10);
+
+	// 	if (svport != port || z==p) continue;
+	// 	if (dgram && strncmp(z, "/udp", 4)) continue;
+	// 	if (!dgram && strncmp(z, "/tcp", 4)) continue;
+	// 	if (p-line > 32) continue;
+
+	// 	memcpy(buf, line, p-line);
+	// 	break;
+	// }
+	// __fclose_ca(f);
+}
+
+func Xgetnameinfo(tls *TLS, sa1 uintptr, sl socklen_t, node uintptr, nodelen socklen_t, serv uintptr, servlen socklen_t, flags int32) int32 { /* getnameinfo.c:125:5: */
+	bp := tls.Alloc(347)
+	defer tls.Free(347)
+
+	// var ptr [78]uint8 at bp, 78
+
+	// var buf [256]uint8 at bp+78, 256
+
+	// var num [13]uint8 at bp+334, 13
+
+	var af int32 = int32((*sockaddr)(unsafe.Pointer(sa1)).sa_family)
+	var a uintptr
+	var scopeid uint32
+
+	switch af {
+	case 2:
+		a = sa1 + 4
+		if uint64(sl) < uint64(unsafe.Sizeof(sockaddr_in{})) {
+			return -6
+		}
+		mkptr4(tls, bp, a)
+		scopeid = uint32(0)
+		break
+	case 10:
+		a = sa1 + 8
+		if uint64(sl) < uint64(unsafe.Sizeof(sockaddr_in6{})) {
+			return -6
+		}
+		if Xmemcmp(tls, a, ts+90, uint64(12)) != 0 {
+			mkptr6(tls, bp, a)
+		} else {
+			mkptr4(tls, bp, a+uintptr(12))
+		}
+		scopeid = (*sockaddr_in6)(unsafe.Pointer(sa1)).sin6_scope_id
+		break
+	default:
+		return -6
+	}
+
+	if node != 0 && nodelen != 0 {
+		*(*uint8)(unsafe.Pointer(bp + 78)) = uint8(0)
+		if !(flags&0x01 != 0) {
+			reverse_hosts(tls, bp+78, a, scopeid, af)
+		}
+		if !(int32(*(*uint8)(unsafe.Pointer(bp + 78))) != 0) && !(flags&0x01 != 0) {
+			Xabort(tls) //TODO-
+			// unsigned char query[18+PTR_MAX], reply[512];
+			// int qlen = __res_mkquery(0, ptr, 1, RR_PTR,
+			// 	0, 0, 0, query, sizeof query);
+			// query[3] = 0; /* don't need AD flag */
+			// int rlen = __res_send(query, qlen, reply, sizeof reply);
+			// buf[0] = 0;
+			// if (rlen > 0)
+			// 	__dns_parse(reply, rlen, dns_parse_callback, buf);
+		}
+		if !(int32(*(*uint8)(unsafe.Pointer(bp + 78))) != 0) {
+			if flags&0x08 != 0 {
+				return -2
+			}
+			Xinet_ntop(tls, af, a, bp+78, uint32(unsafe.Sizeof([256]uint8{})))
+			if scopeid != 0 {
+				Xabort(tls) //TODO-
+				// char *p = 0, tmp[IF_NAMESIZE+1];
+				// if (!(flags & NI_NUMERICSCOPE) &&
+				//     (IN6_IS_ADDR_LINKLOCAL(a) ||
+				//      IN6_IS_ADDR_MC_LINKLOCAL(a)))
+				// 	p = if_indextoname(scopeid, tmp+1);
+				// if (!p)
+				// 	p = itoa(num, scopeid);
+				// *--p = '%';
+				// strcat(buf, p);
+			}
+		}
+		if Xstrlen(tls, bp+78) >= size_t(nodelen) {
+			return -12
+		}
+		Xstrcpy(tls, node, bp+78)
+	}
+
+	if serv != 0 && servlen != 0 {
+		var p uintptr = bp + 78 /* buf */
+		var port int32 = int32(Xntohs(tls, (*sockaddr_in)(unsafe.Pointer(sa1)).sin_port))
+		*(*uint8)(unsafe.Pointer(bp + 78)) = uint8(0)
+		if !(flags&0x02 != 0) {
+			reverse_services(tls, bp+78, port, flags&0x10)
+		}
+		if !(int32(*(*uint8)(unsafe.Pointer(p))) != 0) {
+			p = itoa(tls, bp+334, uint32(port))
+		}
+		if Xstrlen(tls, p) >= size_t(servlen) {
+			return -12
+		}
+		Xstrcpy(tls, serv, p)
+	}
+
+	return 0
+}
+
+var Xh_errno int32 /* h_errno.c:4:5: */
+
+func X__h_errno_location(tls *TLS) uintptr { /* h_errno.c:6:5: */
+	return uintptr(unsafe.Pointer(&Xh_errno))
+}
+
+func X__inet_aton(tls *TLS, s0 uintptr, dest uintptr) int32 { /* inet_aton.c:7:5: */
+	bp := tls.Alloc(40)
+	defer tls.Free(40)
+
+	var s uintptr = s0
+	var d uintptr = dest
+	*(*[4]uint64)(unsafe.Pointer(bp /* a */)) = [4]uint64{0: uint64(0)}
+	// var z uintptr at bp+32, 8
+
+	var i int32
+
+	for i = 0; i < 4; i++ {
+		*(*uint64)(unsafe.Pointer(bp + uintptr(i)*8)) = Xstrtoul(tls, s, bp+32, 0)
+		if *(*uintptr)(unsafe.Pointer(bp + 32)) == s || *(*uint8)(unsafe.Pointer(*(*uintptr)(unsafe.Pointer(bp + 32)))) != 0 && int32(*(*uint8)(unsafe.Pointer(*(*uintptr)(unsafe.Pointer(bp + 32))))) != '.' || !(func() int32 {
+			if 0 != 0 {
+				return Xisdigit(tls, int32(*(*uint8)(unsafe.Pointer(s))))
+			}
+			return Bool32(uint32(*(*uint8)(unsafe.Pointer(s)))-uint32('0') < uint32(10))
+		}() != 0) {
+			return 0
+		}
+		if !(int32(*(*uint8)(unsafe.Pointer(*(*uintptr)(unsafe.Pointer(bp + 32))))) != 0) {
+			break
+		}
+		s = *(*uintptr)(unsafe.Pointer(bp + 32)) + uintptr(1)
+	}
+	if i == 4 {
+		return 0
+	}
+	switch i {
+	case 0:
+		*(*uint64)(unsafe.Pointer(bp + 1*8)) = *(*uint64)(unsafe.Pointer(bp)) & uint64(0xffffff)
+		AssignShrPtrUint64(bp, int(24))
+		fallthrough
+	case 1:
+		*(*uint64)(unsafe.Pointer(bp + 2*8)) = *(*uint64)(unsafe.Pointer(bp + 1*8)) & uint64(0xffff)
+		AssignShrPtrUint64(bp+1*8, int(16))
+		fallthrough
+	case 2:
+		*(*uint64)(unsafe.Pointer(bp + 3*8)) = *(*uint64)(unsafe.Pointer(bp + 2*8)) & uint64(0xff)
+		AssignShrPtrUint64(bp+2*8, int(8))
+	}
+	for i = 0; i < 4; i++ {
+		if *(*uint64)(unsafe.Pointer(bp + uintptr(i)*8)) > uint64(255) {
+			return 0
+		}
+		*(*uint8)(unsafe.Pointer(d + uintptr(i))) = uint8(*(*uint64)(unsafe.Pointer(bp + uintptr(i)*8)))
+	}
+	return 1
+}
+
+func Xinet_ntop(tls *TLS, af int32, a0 uintptr, s uintptr, l socklen_t) uintptr { /* inet_ntop.c:7:12: */
+	bp := tls.Alloc(276)
+	defer tls.Free(276)
+
+	var a uintptr = a0
+	var i int32
+	var j int32
+	var max int32
+	var best int32
+	// var buf [100]uint8 at bp+176, 100
+
+	switch af {
+	case 2:
+		if socklen_t(Xsnprintf(tls, s, uint64(l), ts+103, VaList(bp, int32(*(*uint8)(unsafe.Pointer(a))), int32(*(*uint8)(unsafe.Pointer(a + 1))), int32(*(*uint8)(unsafe.Pointer(a + 2))), int32(*(*uint8)(unsafe.Pointer(a + 3)))))) < l {
+			return s
+		}
+		break
+	case 10:
+		if Xmemcmp(tls, a, ts+90, uint64(12)) != 0 {
+			Xsnprintf(tls, bp+176, uint64(unsafe.Sizeof([100]uint8{})),
+				ts+115,
+				VaList(bp+32, 256*int32(*(*uint8)(unsafe.Pointer(a)))+int32(*(*uint8)(unsafe.Pointer(a + 1))), 256*int32(*(*uint8)(unsafe.Pointer(a + 2)))+int32(*(*uint8)(unsafe.Pointer(a + 3))),
+					256*int32(*(*uint8)(unsafe.Pointer(a + 4)))+int32(*(*uint8)(unsafe.Pointer(a + 5))), 256*int32(*(*uint8)(unsafe.Pointer(a + 6)))+int32(*(*uint8)(unsafe.Pointer(a + 7))),
+					256*int32(*(*uint8)(unsafe.Pointer(a + 8)))+int32(*(*uint8)(unsafe.Pointer(a + 9))), 256*int32(*(*uint8)(unsafe.Pointer(a + 10)))+int32(*(*uint8)(unsafe.Pointer(a + 11))),
+					256*int32(*(*uint8)(unsafe.Pointer(a + 12)))+int32(*(*uint8)(unsafe.Pointer(a + 13))), 256*int32(*(*uint8)(unsafe.Pointer(a + 14)))+int32(*(*uint8)(unsafe.Pointer(a + 15)))))
+		} else {
+			Xsnprintf(tls, bp+176, uint64(unsafe.Sizeof([100]uint8{})),
+				ts+139,
+				VaList(bp+96, 256*int32(*(*uint8)(unsafe.Pointer(a)))+int32(*(*uint8)(unsafe.Pointer(a + 1))), 256*int32(*(*uint8)(unsafe.Pointer(a + 2)))+int32(*(*uint8)(unsafe.Pointer(a + 3))),
+					256*int32(*(*uint8)(unsafe.Pointer(a + 4)))+int32(*(*uint8)(unsafe.Pointer(a + 5))), 256*int32(*(*uint8)(unsafe.Pointer(a + 6)))+int32(*(*uint8)(unsafe.Pointer(a + 7))),
+					256*int32(*(*uint8)(unsafe.Pointer(a + 8)))+int32(*(*uint8)(unsafe.Pointer(a + 9))), 256*int32(*(*uint8)(unsafe.Pointer(a + 10)))+int32(*(*uint8)(unsafe.Pointer(a + 11))),
+					int32(*(*uint8)(unsafe.Pointer(a + 12))), int32(*(*uint8)(unsafe.Pointer(a + 13))), int32(*(*uint8)(unsafe.Pointer(a + 14))), int32(*(*uint8)(unsafe.Pointer(a + 15)))))
+		}
+		// Replace longest /(^0|:)[:0]{2,}/ with "::"
+		i = AssignInt32(&best, 0)
+		max = 2
+		for ; *(*uint8)(unsafe.Pointer(bp + 176 + uintptr(i))) != 0; i++ {
+			if i != 0 && int32(*(*uint8)(unsafe.Pointer(bp + 176 + uintptr(i)))) != ':' {
+				continue
+			}
+			j = int32(Xstrspn(tls, bp+176+uintptr(i), ts+169))
+			if j > max {
+				best = i
+				max = j
+			}
+		}
+		if max > 3 {
+			*(*uint8)(unsafe.Pointer(bp + 176 + uintptr(best))) = AssignPtrUint8(bp+176+uintptr(best+1), uint8(':'))
+			Xmemmove(tls, bp+176+uintptr(best)+uintptr(2), bp+176+uintptr(best)+uintptr(max), uint64(i-best-max+1))
+		}
+		if Xstrlen(tls, bp+176) < size_t(l) {
+			Xstrcpy(tls, s, bp+176)
+			return s
+		}
+		break
+	default:
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 97
+		return uintptr(0)
+	}
+	*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 28
+	return uintptr(0)
+}
+
+func hexval(tls *TLS, c uint32) int32 { /* inet_pton.c:7:12: */
+	if c-uint32('0') < uint32(10) {
+		return int32(c - uint32('0'))
+	}
+	c = c | uint32(32)
+	if c-uint32('a') < uint32(6) {
+		return int32(c - uint32('a') + uint32(10))
+	}
+	return -1
+}
+
+func Xinet_pton(tls *TLS, af int32, s uintptr, a0 uintptr) int32 { /* inet_pton.c:15:5: */
+	bp := tls.Alloc(16)
+	defer tls.Free(16)
+
+	// var ip [8]uint16_t at bp, 16
+
+	var a uintptr = a0
+	var i int32
+	var j int32
+	var v int32
+	var d int32
+	var brk int32 = -1
+	var need_v4 int32 = 0
+
+	if af == 2 {
+		for i = 0; i < 4; i++ {
+			for v = AssignInt32(&j, 0); j < 3 && func() int32 {
+				if 0 != 0 {
+					return Xisdigit(tls, int32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))))
+				}
+				return Bool32(uint32(*(*uint8)(unsafe.Pointer(s + uintptr(j))))-uint32('0') < uint32(10))
+			}() != 0; j++ {
+				v = 10*v + int32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))) - '0'
+			}
+			if j == 0 || j > 1 && int32(*(*uint8)(unsafe.Pointer(s))) == '0' || v > 255 {
+				return 0
+			}
+			*(*uint8)(unsafe.Pointer(a + uintptr(i))) = uint8(v)
+			if int32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))) == 0 && i == 3 {
+				return 1
+			}
+			if int32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))) != '.' {
+				return 0
+			}
+			s += uintptr(j + 1)
+		}
+		return 0
+	} else if af != 10 {
+		*(*int32)(unsafe.Pointer(X___errno_location(tls))) = 97
+		return -1
+	}
+
+	if int32(*(*uint8)(unsafe.Pointer(s))) == ':' && int32(*(*uint8)(unsafe.Pointer(PreIncUintptr(&s, 1)))) != ':' {
+		return 0
+	}
+
+	for i = 0; ; i++ {
+		if int32(*(*uint8)(unsafe.Pointer(s))) == ':' && brk < 0 {
+			brk = i
+			*(*uint16_t)(unsafe.Pointer(bp + uintptr(i&7)*2)) = uint16_t(0)
+			if !(int32(*(*uint8)(unsafe.Pointer(PreIncUintptr(&s, 1)))) != 0) {
+				break
+			}
+			if i == 7 {
+				return 0
+			}
+			continue
+		}
+		for v = AssignInt32(&j, 0); j < 4 && AssignInt32(&d, hexval(tls, uint32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))))) >= 0; j++ {
+			v = 16*v + d
+		}
+		if j == 0 {
+			return 0
+		}
+		*(*uint16_t)(unsafe.Pointer(bp + uintptr(i&7)*2)) = uint16_t(v)
+		if !(int32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))) != 0) && (brk >= 0 || i == 7) {
+			break
+		}
+		if i == 7 {
+			return 0
+		}
+		if int32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))) != ':' {
+			if int32(*(*uint8)(unsafe.Pointer(s + uintptr(j)))) != '.' || i < 6 && brk < 0 {
+				return 0
+			}
+			need_v4 = 1
+			i++
+			break
+		}
+		s += uintptr(j + 1)
+	}
+	if brk >= 0 {
+		Xmemmove(tls, bp+uintptr(brk)*2+uintptr(7)*2-uintptr(i)*2, bp+uintptr(brk)*2, uint64(2*(i+1-brk)))
+		for j = 0; j < 7-i; j++ {
+			*(*uint16_t)(unsafe.Pointer(bp + uintptr(brk+j)*2)) = uint16_t(0)
+		}
+	}
+	for j = 0; j < 8; j++ {
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&a, 1))) = uint8(int32(*(*uint16_t)(unsafe.Pointer(bp + uintptr(j)*2))) >> 8)
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&a, 1))) = uint8(*(*uint16_t)(unsafe.Pointer(bp + uintptr(j)*2)))
+	}
+	if need_v4 != 0 && Xinet_pton(tls, 2, s, a-uintptr(4)) <= 0 {
+		return 0
+	}
+	return 1
+}
+
+func X__lookup_ipliteral(tls *TLS, buf uintptr, name uintptr, family int32) int32 { /* lookup_ipliteral.c:12:5: */
+	bp := tls.Alloc(96)
+	defer tls.Free(96)
+
+	// var a4 in_addr at bp, 4
+
+	// var a6 in6_addr at bp+68, 16
+
+	if X__inet_aton(tls, name, bp) > 0 {
+		if family == 10 { // wrong family
+			return -2
+		}
+		Xmemcpy(tls, buf+8, bp, uint64(unsafe.Sizeof(in_addr{})))
+		(*address)(unsafe.Pointer(buf)).family = 2
+		(*address)(unsafe.Pointer(buf)).scopeid = uint32(0)
+		return 1
+	}
+	// var tmp [64]uint8 at bp+4, 64
+
+	var p uintptr = Xstrchr(tls, name, '%')
+	// var z uintptr at bp+88, 8
+
+	var scopeid uint64 = uint64(0)
+	if p != 0 && (int64(p)-int64(name))/1 < int64(64) {
+		Xmemcpy(tls, bp+4, name, uint64((int64(p)-int64(name))/1))
+		*(*uint8)(unsafe.Pointer(bp + 4 + uintptr((int64(p)-int64(name))/1))) = uint8(0)
+		name = bp + 4 /* &tmp[0] */
+	}
+
+	if Xinet_pton(tls, 10, name, bp+68) <= 0 {
+		return 0
+	}
+	if family == 2 { // wrong family
+		return -2
+	}
+
+	Xmemcpy(tls, buf+8, bp+68, uint64(unsafe.Sizeof(in6_addr{})))
+	(*address)(unsafe.Pointer(buf)).family = 10
+	if p != 0 {
+		if func() int32 {
+			if 0 != 0 {
+				return Xisdigit(tls, int32(*(*uint8)(unsafe.Pointer(PreIncUintptr(&p, 1)))))
+			}
+			return Bool32(uint32(*(*uint8)(unsafe.Pointer(PreIncUintptr(&p, 1))))-uint32('0') < uint32(10))
+		}() != 0 {
+			scopeid = Xstrtoull(tls, p, bp+88, 10)
+		} else {
+			*(*uintptr)(unsafe.Pointer(bp + 88 /* z */)) = p - uintptr(1)
+		}
+		if *(*uint8)(unsafe.Pointer(*(*uintptr)(unsafe.Pointer(bp + 88)))) != 0 {
+			Xabort(tls) //TODO-
+			// if (!IN6_IS_ADDR_LINKLOCAL(&a6) &&
+			//     !IN6_IS_ADDR_MC_LINKLOCAL(&a6))
+			// 	return EAI_NONAME;
+			// scopeid = if_nametoindex(p);
+			// if (!scopeid) return EAI_NONAME;
+		}
+		if scopeid > uint64(0xffffffff) {
+			return -2
+		}
+	}
+	(*address)(unsafe.Pointer(buf)).scopeid = uint32(scopeid)
+	return 1
+}
+
+func is_valid_hostname(tls *TLS, host uintptr) int32 { /* lookup_name.c:18:12: */
+	var s uintptr
+	//TODO if (strnlen(host, 255)-1 >= 254 || mbstowcs(0, host, 0) == -1) return 0;
+	if Xstrnlen(tls, host, uint64(255))-uint64(1) >= uint64(254) {
+		return 0
+	}
+	for s = host; int32(*(*uint8)(unsafe.Pointer(s))) >= 0x80 || int32(*(*uint8)(unsafe.Pointer(s))) == '.' || int32(*(*uint8)(unsafe.Pointer(s))) == '-' || Xisalnum(tls, int32(*(*uint8)(unsafe.Pointer(s)))) != 0; s++ {
+	}
+	return BoolInt32(!(*(*uint8)(unsafe.Pointer(s)) != 0))
+}
+
+var Xzero_struct_address address /* lookup_name.c:27:16: */
+
+func name_from_null(tls *TLS, buf uintptr, name uintptr, family int32, flags int32) int32 { /* lookup_name.c:29:12: */
+	var cnt int32 = 0
+	if name != 0 {
+		return 0
+	}
+	if flags&0x01 != 0 {
+		//TODO if (family != AF_INET6)
+		//TODO 	buf[cnt++] = (struct address){ .family = AF_INET };
+		if family != 10 {
+			var x = Xzero_struct_address
+			x.family = 2
+			*(*address)(unsafe.Pointer(buf + uintptr(PostIncInt32(&cnt, 1))*28)) = x
+		}
+		//TODO if (family != AF_INET)
+		//TODO 	buf[cnt++] = (struct address){ .family = AF_INET6 };
+		if family != 2 {
+			var x = Xzero_struct_address
+			x.family = 10
+			*(*address)(unsafe.Pointer(buf + uintptr(PostIncInt32(&cnt, 1))*28)) = x
+		}
+	} else {
+		Xabort(tls) //TODO-
+		// 	if (family != AF_INET6)
+		// 		buf[cnt++] = (struct address){ .family = AF_INET, .addr = { 127,0,0,1 } };
+		// 	if (family != AF_INET)
+		// 		buf[cnt++] = (struct address){ .family = AF_INET6, .addr = { [15] = 1 } };
+	}
+	return cnt
+}
+
+func name_from_numeric(tls *TLS, buf uintptr, name uintptr, family int32) int32 { /* lookup_name.c:58:12: */
+	return X__lookup_ipliteral(tls, buf, name, family)
+}
+
+func name_from_hosts(tls *TLS, buf uintptr, canon uintptr, name uintptr, family int32) int32 { /* lookup_name.c:63:12: */
+	bp := tls.Alloc(512)
+	defer tls.Free(512)
+
+	// var line [512]uint8 at bp, 512
+
+	var l size_t = Xstrlen(tls, name)
+	var cnt int32 = 0
+	var badfam int32 = 0
+	var _buf [1032]uint8
+	_ = _buf
+	//TODO FILE _f, *f = __fopen_rb_ca("/etc/hosts", &_f, _buf, sizeof _buf);
+	var _f FILE
+	_ = _f
+	var f uintptr = Xfopen(tls, ts+76, ts+87)
+	if !(f != 0) {
+		switch *(*int32)(unsafe.Pointer(X___errno_location(tls))) {
+		case 2:
+			fallthrough
+		case 20:
+			fallthrough
+		case 13:
+			return 0
+			fallthrough
+		default:
+			return -11
+		}
+	}
+	for Xfgets(tls, bp, int32(unsafe.Sizeof([512]uint8{})), f) != 0 && cnt < 48 {
+		var p uintptr
+		var z uintptr
+
+		if AssignUintptr(&p, Xstrchr(tls, bp, '#')) != 0 {
+			*(*uint8)(unsafe.Pointer(PostIncUintptr(&p, 1))) = uint8('\n')
+			*(*uint8)(unsafe.Pointer(p)) = uint8(0)
+		}
+		for p = bp + uintptr(1); AssignUintptr(&p, Xstrstr(tls, p, name)) != 0 && (!(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(p + UintptrFromInt32(-1))))) != 0) || !(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(p + uintptr(l))))) != 0)); p++ {
+		}
+		if !(p != 0) {
+			continue
+		}
+
+		// Isolate IP address to parse
+		for p = bp; /* &line[0] */ *(*uint8)(unsafe.Pointer(p)) != 0 && !(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(p)))) != 0); p++ {
+		}
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&p, 1))) = uint8(0)
+		switch name_from_numeric(tls, buf+uintptr(cnt)*28, bp, family) {
+		case 1:
+			cnt++
+			break
+		case 0:
+			continue
+		default:
+			badfam = -2
+			continue
+		}
+
+		// Extract first name as canonical name
+		for ; *(*uint8)(unsafe.Pointer(p)) != 0 && __isspace(tls, int32(*(*uint8)(unsafe.Pointer(p)))) != 0; p++ {
+		}
+		for z = p; *(*uint8)(unsafe.Pointer(z)) != 0 && !(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(z)))) != 0); z++ {
+		}
+		*(*uint8)(unsafe.Pointer(z)) = uint8(0)
+		if is_valid_hostname(tls, p) != 0 {
+			Xmemcpy(tls, canon, p, uint64((int64(z)-int64(p))/1+int64(1)))
+		}
+	}
+	//TODO __fclose_ca(f);
+	Xfclose(tls, f)
+	if cnt != 0 {
+		return cnt
+	}
+	return badfam
+}
+
+type dpc_ctx = struct {
+	addrs uintptr
+	canon uintptr
+	cnt   int32
+	_     [4]byte
+} /* lookup_name.c:112:1 */
+
+func name_from_dns_search(tls *TLS, buf uintptr, canon uintptr, name uintptr, family int32) int32 { /* lookup_name.c:191:12: */
+	return -1 //TODO-
+	Xabort(tls)
+	return int32(0) //TODO-
+	// char search[256];
+	// struct resolvconf conf;
+	// size_t l, dots;
+	// char *p, *z;
+
+	// if (__get_resolv_conf(&conf, search, sizeof search) < 0) return -1;
+
+	// /* Count dots, suppress search when >=ndots or name ends in
+	//  * a dot, which is an explicit request for global scope. */
+	// for (dots=l=0; name[l]; l++) if (name[l]=='.') dots++;
+	// if (dots >= conf.ndots || name[l-1]=='.') *search = 0;
+
+	// /* Strip final dot for canon, fail if multiple trailing dots. */
+	// if (name[l-1]=='.') l--;
+	// if (!l || name[l-1]=='.') return EAI_NONAME;
+
+	// /* This can never happen; the caller already checked length. */
+	// if (l >= 256) return EAI_NONAME;
+
+	// /* Name with search domain appended is setup in canon[]. This both
+	//  * provides the desired default canonical name (if the requested
+	//  * name is not a CNAME record) and serves as a buffer for passing
+	//  * the full requested name to name_from_dns. */
+	// memcpy(canon, name, l);
+	// canon[l] = '.';
+
+	// for (p=search; *p; p=z) {
+	// 	for (; isspace(*p); p++);
+	// 	for (z=p; *z && !isspace(*z); z++);
+	// 	if (z==p) break;
+	// 	if (z-p < 256 - l - 1) {
+	// 		memcpy(canon+l+1, p, z-p);
+	// 		canon[z-p+1+l] = 0;
+	// 		int cnt = name_from_dns(buf, canon, canon, family, &conf);
+	// 		if (cnt) return cnt;
+	// 	}
+	// }
+
+	// canon[l] = 0;
+	// return name_from_dns(buf, canon, name, family, &conf);
+}
+
+type policy = struct {
+	addr  [16]uint8
+	len   uint8
+	mask  uint8
+	prec  uint8
+	label uint8
+} /* lookup_name.c:237:14 */
+
+var defpolicy = [6]policy{
+	{addr: *(*[16]uint8)(unsafe.Pointer(ts + 172)), len: uint8(15), mask: uint8(0xff), prec: uint8(50)},
+	{addr: *(*[16]uint8)(unsafe.Pointer(ts + 189)), len: uint8(11), mask: uint8(0xff), prec: uint8(35), label: uint8(4)},
+	{addr: *(*[16]uint8)(unsafe.Pointer(ts + 205)), len: uint8(1), mask: uint8(0xff), prec: uint8(30), label: uint8(2)},
+	{addr: *(*[16]uint8)(unsafe.Pointer(ts + 221)), len: uint8(3), mask: uint8(0xff), prec: uint8(5), label: uint8(5)},
+	{addr: *(*[16]uint8)(unsafe.Pointer(ts + 237)), mask: uint8(0xfe), prec: uint8(3), label: uint8(13)},
+	// Last rule must match all addresses to stop loop.
+	{addr: *(*[16]uint8)(unsafe.Pointer(ts + 253)), prec: uint8(40), label: uint8(1)},
+} /* lookup_name.c:241:3 */
+
+func policyof(tls *TLS, a uintptr) uintptr { /* lookup_name.c:259:28: */
+	var i int32
+	for i = 0; ; i++ {
+		if Xmemcmp(tls, a, uintptr(unsafe.Pointer(&defpolicy))+uintptr(i)*20, uint64(defpolicy[i].len)) != 0 {
+			continue
+		}
+		if int32(*(*uint8_t)(unsafe.Pointer(a + uintptr(defpolicy[i].len))))&int32(defpolicy[i].mask) !=
+			int32(*(*uint8)(unsafe.Pointer(uintptr(unsafe.Pointer(&defpolicy)) + uintptr(i)*20 + uintptr(defpolicy[i].len)))) {
+			continue
+		}
+		return uintptr(unsafe.Pointer(&defpolicy)) + uintptr(i)*20
+	}
+	return uintptr(0)
+}
+
+func labelof(tls *TLS, a uintptr) int32 { /* lookup_name.c:272:12: */
+	return int32((*policy)(unsafe.Pointer(policyof(tls, a))).label)
+}
+
+func scopeof(tls *TLS, a uintptr) int32 { /* lookup_name.c:277:12: */
+	if int32(*(*uint8_t)(unsafe.Pointer(a))) == 0xff {
+		return int32(*(*uint8_t)(unsafe.Pointer(a + 1))) & 15
+	}
+	if int32(*(*uint8_t)(unsafe.Pointer(a))) == 0xfe && int32(*(*uint8_t)(unsafe.Pointer(a + 1)))&0xc0 == 0x80 {
+		return 2
+	}
+	if *(*uint32_t)(unsafe.Pointer(a)) == uint32_t(0) && *(*uint32_t)(unsafe.Pointer(a + 1*4)) == uint32_t(0) && *(*uint32_t)(unsafe.Pointer(a + 2*4)) == uint32_t(0) && int32(*(*uint8_t)(unsafe.Pointer(a + 12))) == 0 && int32(*(*uint8_t)(unsafe.Pointer(a + 13))) == 0 && int32(*(*uint8_t)(unsafe.Pointer(a + 14))) == 0 && int32(*(*uint8_t)(unsafe.Pointer(a + 15))) == 1 {
+		return 2
+	}
+	if int32(*(*uint8_t)(unsafe.Pointer(a))) == 0xfe && int32(*(*uint8_t)(unsafe.Pointer(a + 1)))&0xc0 == 0xc0 {
+		return 5
+	}
+	return 14
+}
+
+func prefixmatch(tls *TLS, s uintptr, d uintptr) int32 { /* lookup_name.c:286:12: */
+	// FIXME: The common prefix length should be limited to no greater
+	// than the nominal length of the prefix portion of the source
+	// address. However the definition of the source prefix length is
+	// not clear and thus this limiting is not yet implemented.
+	var i uint32
+	for i = uint32(0); i < uint32(128) && !((int32(*(*uint8_t)(unsafe.Pointer(s /* &.__in6_union */ /* &.__s6_addr */ + uintptr(i/uint32(8)))))^int32(*(*uint8_t)(unsafe.Pointer(d /* &.__in6_union */ /* &.__s6_addr */ + uintptr(i/uint32(8))))))&(int32(128)>>(i%uint32(8))) != 0); i++ {
+	}
+	return int32(i)
+}
+
+func addrcmp(tls *TLS, _a uintptr, _b uintptr) int32 { /* lookup_name.c:305:12: */
+	var a uintptr = _a
+	var b uintptr = _b
+	return (*address)(unsafe.Pointer(b)).sortkey - (*address)(unsafe.Pointer(a)).sortkey
+}
+
+func X__lookup_name(tls *TLS, buf uintptr, canon uintptr, name uintptr, family int32, flags int32) int32 { /* lookup_name.c:311:5: */
+	bp := tls.Alloc(92)
+	defer tls.Free(92)
+
+	var cnt int32 = 0
+	var i int32
+	var j int32
+	_ = j
+
+	*(*uint8)(unsafe.Pointer(canon)) = uint8(0)
+	if name != 0 {
+		// reject empty name and check len so it fits into temp bufs
+		var l size_t = Xstrnlen(tls, name, uint64(255))
+		if l-uint64(1) >= uint64(254) {
+			return -2
+		}
+		Xmemcpy(tls, canon, name, l+uint64(1))
+	}
+
+	// Procedurally, a request for v6 addresses with the v4-mapped
+	// flag set is like a request for unspecified family, followed
+	// by filtering of the results.
+	if flags&0x08 != 0 {
+		if family == 10 {
+			family = 0
+		} else {
+			flags = flags - 0x08
+		}
+	}
+
+	// Try each backend until there's at least one result.
+	cnt = name_from_null(tls, buf, name, family, flags)
+	if !(cnt != 0) {
+		cnt = name_from_numeric(tls, buf, name, family)
+	}
+	if !(cnt != 0) && !(flags&0x04 != 0) {
+		cnt = name_from_hosts(tls, buf, canon, name, family)
+		if !(cnt != 0) {
+			cnt = name_from_dns_search(tls, buf, canon, name, family)
+		}
+	}
+	if cnt <= 0 {
+		if cnt != 0 {
+			return cnt
+		}
+		return -2
+	}
+
+	// Filter/transform results for v4-mapped lookup, if requested.
+	if flags&0x08 != 0 {
+		Xabort(tls) //TODO-
+		// 	if (!(flags & AI_ALL)) {
+		// 		/* If any v6 results exist, remove v4 results. */
+		// 		for (i=0; i<cnt && buf[i].family != AF_INET6; i++);
+		// 		if (i<cnt) {
+		// 			for (j=0; i<cnt; i++) {
+		// 				if (buf[i].family == AF_INET6)
+		// 					buf[j++] = buf[i];
+		// 			}
+		// 			cnt = i = j;
+		// 		}
+		// 	}
+		// 	/* Translate any remaining v4 results to v6 */
+		// 	for (i=0; i<cnt; i++) {
+		// 		if (buf[i].family != AF_INET) continue;
+		// 		memcpy(buf[i].addr+12, buf[i].addr, 4);
+		// 		memcpy(buf[i].addr, "\0\0\0\0\0\0\0\0\0\0\xff\xff", 12);
+		// 		buf[i].family = AF_INET6;
+		// 	}
+	}
+
+	// No further processing is needed if there are fewer than 2
+	// results or if there are only IPv4 results.
+	if cnt < 2 || family == 2 {
+		return cnt
+	}
+	for i = 0; i < cnt; i++ {
+		if (*address)(unsafe.Pointer(buf+uintptr(i)*28)).family != 2 {
+			break
+		}
+	}
+	if i == cnt {
+		return cnt
+	}
+	var cs int32
+	_ = cs
+	//TODO pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
+
+	// The following implements a subset of RFC 3484/6724 destination
+	// address selection by generating a single 31-bit sort key for
+	// each address. Rules 3, 4, and 7 are omitted for having
+	// excessive runtime and code size cost and dubious benefit.
+	// So far the label/precedence table cannot be customized.
+	for i = 0; i < cnt; i++ {
+		var family int32 = (*address)(unsafe.Pointer(buf + uintptr(i)*28)).family
+		var key int32 = 0
+		*(*sockaddr_in6)(unsafe.Pointer(bp + 28 /* sa6 */)) = sockaddr_in6{}
+		*(*sockaddr_in6)(unsafe.Pointer(bp /* da6 */)) = sockaddr_in6{sin6_family: sa_family_t(10), sin6_port: in_port_t(65535), sin6_scope_id: (*address)(unsafe.Pointer(buf + uintptr(i)*28)).scopeid}
+		*(*sockaddr_in)(unsafe.Pointer(bp + 72 /* sa4 */)) = sockaddr_in{}
+		*(*sockaddr_in)(unsafe.Pointer(bp + 56 /* da4 */)) = sockaddr_in{sin_family: sa_family_t(2), sin_port: in_port_t(65535)}
+		var sa1 uintptr
+		var da uintptr
+		// var salen socklen_t at bp+88, 4
+
+		var dalen socklen_t
+		if family == 10 {
+			Xmemcpy(tls, bp+8, buf+uintptr(i)*28+8, uint64(16))
+			da = bp /* &da6 */
+			dalen = socklen_t(unsafe.Sizeof(sockaddr_in6{}))
+			sa1 = bp + 28 /* &sa6 */
+			*(*socklen_t)(unsafe.Pointer(bp + 88 /* salen */)) = socklen_t(unsafe.Sizeof(sockaddr_in6{}))
+		} else {
+			Xmemcpy(tls, bp+28+8,
+				ts+90, uint64(12))
+			Xmemcpy(tls, bp+8+uintptr(12), buf+uintptr(i)*28+8, uint64(4))
+			Xmemcpy(tls, bp+8,
+				ts+90, uint64(12))
+			Xmemcpy(tls, bp+8+uintptr(12), buf+uintptr(i)*28+8, uint64(4))
+			Xmemcpy(tls, bp+56+4, buf+uintptr(i)*28+8, uint64(4))
+			da = bp + 56 /* &da4 */
+			dalen = socklen_t(unsafe.Sizeof(sockaddr_in{}))
+			sa1 = bp + 72 /* &sa4 */
+			*(*socklen_t)(unsafe.Pointer(bp + 88 /* salen */)) = socklen_t(unsafe.Sizeof(sockaddr_in{}))
+		}
+		var dpolicy uintptr = policyof(tls, bp+8)
+		var dscope int32 = scopeof(tls, bp+8)
+		var dlabel int32 = int32((*policy)(unsafe.Pointer(dpolicy)).label)
+		var dprec int32 = int32((*policy)(unsafe.Pointer(dpolicy)).prec)
+		var prefixlen int32 = 0
+		var fd int32 = Xsocket(tls, family, 2|02000000, 17)
+		if fd >= 0 {
+			if !(Xconnect(tls, fd, da, dalen) != 0) {
+				key = key | 0x40000000
+				if !(Xgetsockname(tls, fd, sa1, bp+88) != 0) {
+					if family == 2 {
+						Xmemcpy(tls,
+							bp+28+8+uintptr(12),
+							bp+72+4, uint64(4))
+					}
+					if dscope == scopeof(tls, bp+28+8) {
+						key = key | 0x20000000
+					}
+					if dlabel == labelof(tls, bp+28+8) {
+						key = key | 0x10000000
+					}
+					prefixlen = prefixmatch(tls, bp+28+8,
+						bp+8)
+				}
+			}
+			Xclose(tls, fd)
+		}
+		key = key | dprec<<20
+		key = key | (15-dscope)<<16
+		key = key | prefixlen<<8
+		key = key | (48-i)<<0
+		(*address)(unsafe.Pointer(buf + uintptr(i)*28)).sortkey = key
+	}
+	Xqsort(tls, buf, uint64(cnt), uint64(unsafe.Sizeof(address{})), *(*uintptr)(unsafe.Pointer(&struct {
+		f func(*TLS, uintptr, uintptr) int32
+	}{addrcmp})))
+
+	//TODO pthread_setcancelstate(cs, 0);
+
+	return cnt
+}
+
+func X__lookup_serv(tls *TLS, buf uintptr, name uintptr, proto int32, socktype int32, flags int32) int32 { /* lookup_serv.c:12:5: */
+	bp := tls.Alloc(8)
+	defer tls.Free(8)
+
+	var line [128]uint8
+	_ = line
+	var cnt int32 = 0
+	var p uintptr
+	_ = p
+	*(*uintptr)(unsafe.Pointer(bp /* z */)) = ts + 13 /* "" */
+	var port uint64 = uint64(0)
+
+	switch socktype {
+	case 1:
+		switch proto {
+		case 0:
+			proto = 6
+			fallthrough
+		case 6:
+			break
+		default:
+			return -8
+		}
+		break
+	case 2:
+		switch proto {
+		case 0:
+			proto = 17
+			fallthrough
+		case 17:
+			break
+		default:
+			return -8
+		}
+		fallthrough
+	case 0:
+		break
+	default:
+		if name != 0 {
+			return -8
+		}
+		(*service)(unsafe.Pointer(buf)).port = uint16_t(0)
+		(*service)(unsafe.Pointer(buf)).proto = uint8(proto)
+		(*service)(unsafe.Pointer(buf)).socktype = uint8(socktype)
+		return 1
+	}
+
+	if name != 0 {
+		if !(int32(*(*uint8)(unsafe.Pointer(name))) != 0) {
+			return -8
+		}
+		port = Xstrtoul(tls, name, bp, 10)
+	}
+	if !(int32(*(*uint8)(unsafe.Pointer(*(*uintptr)(unsafe.Pointer(bp))))) != 0) {
+		if port > uint64(65535) {
+			return -8
+		}
+		if proto != 17 {
+			(*service)(unsafe.Pointer(buf + uintptr(cnt)*4)).port = uint16_t(port)
+			(*service)(unsafe.Pointer(buf + uintptr(cnt)*4)).socktype = uint8(1)
+			(*service)(unsafe.Pointer(buf + uintptr(PostIncInt32(&cnt, 1))*4)).proto = uint8(6)
+		}
+		if proto != 6 {
+			(*service)(unsafe.Pointer(buf + uintptr(cnt)*4)).port = uint16_t(port)
+			(*service)(unsafe.Pointer(buf + uintptr(cnt)*4)).socktype = uint8(2)
+			(*service)(unsafe.Pointer(buf + uintptr(PostIncInt32(&cnt, 1))*4)).proto = uint8(17)
+		}
+		return cnt
+	}
+
+	if flags&0x400 != 0 {
+		return -2
+	}
+
+	var l size_t = Xstrlen(tls, name)
+	_ = l
+
+	Xabort(tls) //TODO-
+	// unsigned char _buf[1032];
+	// FILE _f, *f = __fopen_rb_ca("/etc/services", &_f, _buf, sizeof _buf);
+	// if (!f) switch (errno) {
+	// case ENOENT:
+	// case ENOTDIR:
+	// case EACCES:
+	// 	return EAI_SERVICE;
+	// default:
+	// 	return EAI_SYSTEM;
+	// }
+
+	Xabort(tls) //TODO-
+	// while (fgets(line, sizeof line, f) && cnt < MAXSERVS) {
+	// 	if ((p=strchr(line, '#'))) *p++='\n', *p=0;
+
+	// 	/* Find service name */
+	// 	for(p=line; (p=strstr(p, name)); p++) {
+	// 		if (p>line && !isspace(p[-1])) continue;
+	// 		if (p[l] && !isspace(p[l])) continue;
+	// 		break;
+	// 	}
+	// 	if (!p) continue;
+
+	// 	/* Skip past canonical name at beginning of line */
+	// 	for (p=line; *p && !isspace(*p); p++);
+
+	// 	port = strtoul(p, &z, 10);
+	// 	if (port > 65535 || z==p) continue;
+	// 	if (!strncmp(z, "/udp", 4)) {
+	// 		if (proto == IPPROTO_TCP) continue;
+	// 		buf[cnt].port = port;
+	// 		buf[cnt].socktype = SOCK_DGRAM;
+	// 		buf[cnt++].proto = IPPROTO_UDP;
+	// 	}
+	// 	if (!strncmp(z, "/tcp", 4)) {
+	// 		if (proto == IPPROTO_UDP) continue;
+	// 		buf[cnt].port = port;
+	// 		buf[cnt].socktype = SOCK_STREAM;
+	// 		buf[cnt++].proto = IPPROTO_TCP;
+	// 	}
+	// }
+	// __fclose_ca(f);
+	// return cnt > 0 ? cnt : EAI_SERVICE;
+	Xabort(tls)
+	return int32(0) //TODO-
+}
+
+func temper(tls *TLS, x uint32) uint32 { /* rand_r.c:3:17: */
+	x = x ^ x>>11
+	x = x ^ x<<7&0x9D2C5680
+	x = x ^ x<<15&0xEFC60000
+	x = x ^ x>>18
+	return x
+}
+
+func Xrand_r(tls *TLS, seed uintptr) int32 { /* rand_r.c:12:5: */
+	return int32(temper(tls, AssignPtrUint32(seed, *(*uint32)(unsafe.Pointer(seed))*uint32(1103515245)+uint32(12345))) / uint32(2))
+}
+
+func X__lockfile(tls *TLS, f uintptr) int32 { /* __lockfile.c:4:5: */
+	var owner int32 = (*FILE)(unsafe.Pointer(f)).lock
+	var tid int32 = (*__pthread)(unsafe.Pointer(__pthread_self(tls))).tid
+	if owner&CplInt32(0x40000000) == tid {
+		return 0
+	}
+	owner = a_cas(tls, f+140, 0, tid)
+	if !(owner != 0) {
+		return 1
+	}
+	for AssignInt32(&owner, a_cas(tls, f+140, 0, tid|0x40000000)) != 0 {
+		if owner&0x40000000 != 0 || a_cas(tls, f+140, owner, owner|0x40000000) == owner {
+			__futexwait(tls, f+140, owner|0x40000000, 1)
+		}
+	}
+	return 1
+}
+
+func X__unlockfile(tls *TLS, f uintptr) { /* __lockfile.c:19:6: */
+	if a_swap(tls, f+140, 0)&0x40000000 != 0 {
+		__wake(tls, f+140, 1, 1)
+	}
+}
+
+func X__toread(tls *TLS, f uintptr) int32 { /* __toread.c:3:5: */
+	*(*int32)(unsafe.Pointer(f + 136)) |= (*FILE)(unsafe.Pointer(f)).mode - 1
+	if (*FILE)(unsafe.Pointer(f)).wpos != (*FILE)(unsafe.Pointer(f)).wbase {
+		(*struct {
+			f func(*TLS, uintptr, uintptr, size_t) size_t
+		})(unsafe.Pointer(&struct{ uintptr }{(*FILE)(unsafe.Pointer(f)).write})).f(tls, f, uintptr(0), uint64(0))
+	}
+	(*FILE)(unsafe.Pointer(f)).wpos = AssignPtrUintptr(f+56, AssignPtrUintptr(f+32, uintptr(0)))
+	if (*FILE)(unsafe.Pointer(f)).flags&uint32(4) != 0 {
+		*(*uint32)(unsafe.Pointer(f)) |= uint32(32)
+		return -1
+	}
+	(*FILE)(unsafe.Pointer(f)).rpos = AssignPtrUintptr(f+16, (*FILE)(unsafe.Pointer(f)).buf+uintptr((*FILE)(unsafe.Pointer(f)).buf_size))
+	if (*FILE)(unsafe.Pointer(f)).flags&uint32(16) != 0 {
+		return -1
+	}
+	return 0
+}
+
+func X__toread_needs_stdio_exit(tls *TLS) { /* __toread.c:16:13: */
+	X__builtin_abort(tls) //TODO-
+	// __stdio_exit_needed();
+}
+
+// This function assumes it will never be called if there is already
+// data buffered for reading.
+
+func X__uflow(tls *TLS, f uintptr) int32 { /* __uflow.c:6:5: */
+	bp := tls.Alloc(1)
+	defer tls.Free(1)
+
+	// var c uint8 at bp, 1
+
+	if !(X__toread(tls, f) != 0) && (*struct {
+		f func(*TLS, uintptr, uintptr, size_t) size_t
+	})(unsafe.Pointer(&struct{ uintptr }{(*FILE)(unsafe.Pointer(f)).read})).f(tls, f, bp, uint64(1)) == uint64(1) {
+		return int32(*(*uint8)(unsafe.Pointer(bp)))
+	}
+	return -1
+}
+
+func Xsscanf(tls *TLS, s uintptr, fmt uintptr, va uintptr) int32 { /* sscanf.c:4:5: */
+	var ret int32
+	var ap va_list
+	_ = ap
+	ap = va
+	ret = Xvsscanf(tls, s, fmt, ap)
+	_ = ap
+	return ret
+}
+
+type wctrans_t = uintptr /* wctype.h:20:19 */
+
+func store_int(tls *TLS, dest uintptr, size int32, i uint64) { /* vfscanf.c:22:13: */
+	if !(dest != 0) {
+		return
+	}
+	switch size {
+	case -2:
+		*(*uint8)(unsafe.Pointer(dest)) = uint8(i)
+		break
+	case -1:
+		*(*int16)(unsafe.Pointer(dest)) = int16(i)
+		break
+	case 0:
+		*(*int32)(unsafe.Pointer(dest)) = int32(i)
+		break
+	case 1:
+		*(*int64)(unsafe.Pointer(dest)) = int64(i)
+		break
+	case 3:
+		*(*int64)(unsafe.Pointer(dest)) = int64(i)
+		break
+	}
+}
+
+func arg_n(tls *TLS, ap va_list, n uint32) uintptr { /* vfscanf.c:44:13: */
+	var p uintptr
+	var i uint32
+	var ap2 va_list
+	_ = ap2
+	ap2 = ap
+	for i = n; i > uint32(1); i-- {
+		VaUintptr(&ap2)
+	}
+	p = VaUintptr(&ap2)
+	_ = ap2
+	return p
+}
+
+func Xvfscanf(tls *TLS, f uintptr, fmt uintptr, ap va_list) int32 { /* vfscanf.c:56:5: */
+	bp := tls.Alloc(276)
+	defer tls.Free(276)
+
+	var width int32
+	var size int32
+	var alloc int32
+	var base int32
+	var p uintptr
+	var c int32
+	var t int32
+	var s uintptr
+	var wcs uintptr
+	// var st mbstate_t at bp+268, 8
+
+	var dest uintptr
+	var invert int32
+	var matches int32
+	var x uint64
+	var y float64
+	var pos off_t
+	// var scanset [257]uint8 at bp, 257
+
+	var i size_t
+	var k size_t
+	// var wc wchar_t at bp+260, 4
+
+	var __need_unlock int32
+	var tmp uintptr
+	var tmp1 uintptr
+	alloc = 0
+	dest = uintptr(0)
+	matches = 0
+	pos = int64(0)
+	__need_unlock = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).lock >= 0 {
+			return X__lockfile(tls, f)
+		}
+		return 0
+	}()
+
+	if !!(int32((*FILE)(unsafe.Pointer(f)).rpos) != 0) {
+		goto __1
+	}
+	X__toread(tls, f)
+__1:
+	;
+	if !!(int32((*FILE)(unsafe.Pointer(f)).rpos) != 0) {
+		goto __2
+	}
+	goto input_fail
+__2:
+	;
+
+	p = fmt
+__3:
+	if !(*(*uint8)(unsafe.Pointer(p)) != 0) {
+		goto __5
+	}
+
+	alloc = 0
+
+	if !(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(p)))) != 0) {
+		goto __6
+	}
+__7:
+	if !(__isspace(tls, int32(*(*uint8)(unsafe.Pointer(p + 1)))) != 0) {
+		goto __8
+	}
+	p++
+	goto __7
+__8:
+	;
+	X__shlim(tls, f, int64(0))
+__9:
+	if !(__isspace(tls, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()) != 0) {
+		goto __10
+	}
+	goto __9
+__10:
+	;
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	pos = pos + ((*FILE)(unsafe.Pointer(f)).shcnt + (int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1)
+	goto __4
+__6:
+	;
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) != '%' || int32(*(*uint8)(unsafe.Pointer(p + 1))) == '%') {
+		goto __11
+	}
+	X__shlim(tls, f, int64(0))
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == '%') {
+		goto __12
+	}
+	p++
+__14:
+	if !(__isspace(tls, AssignInt32(&c, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}())) != 0) {
+		goto __15
+	}
+	goto __14
+__15:
+	;
+	goto __13
+__12:
+	c = func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()
+__13:
+	;
+	if !(c != int32(*(*uint8)(unsafe.Pointer(p)))) {
+		goto __16
+	}
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	if !(c < 0) {
+		goto __17
+	}
+	goto input_fail
+__17:
+	;
+	goto match_fail
+__16:
+	;
+	pos = pos + ((*FILE)(unsafe.Pointer(f)).shcnt + (int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1)
+	goto __4
+__11:
+	;
+
+	p++
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == '*') {
+		goto __18
+	}
+	dest = uintptr(0)
+	p++
+	goto __19
+__18:
+	if !(func() int32 {
+		if 0 != 0 {
+			return Xisdigit(tls, int32(*(*uint8)(unsafe.Pointer(p))))
+		}
+		return Bool32(uint32(*(*uint8)(unsafe.Pointer(p)))-uint32('0') < uint32(10))
+	}() != 0 && int32(*(*uint8)(unsafe.Pointer(p + 1))) == '$') {
+		goto __20
+	}
+	dest = arg_n(tls, ap, uint32(int32(*(*uint8)(unsafe.Pointer(p)))-'0'))
+	p += uintptr(2)
+	goto __21
+__20:
+	dest = VaUintptr(&ap)
+__21:
+	;
+__19:
+	;
+
+	width = 0
+__22:
+	if !(func() int32 {
+		if 0 != 0 {
+			return Xisdigit(tls, int32(*(*uint8)(unsafe.Pointer(p))))
+		}
+		return Bool32(uint32(*(*uint8)(unsafe.Pointer(p)))-uint32('0') < uint32(10))
+	}() != 0) {
+		goto __24
+	}
+	width = 10*width + int32(*(*uint8)(unsafe.Pointer(p))) - '0'
+	goto __23
+__23:
+	p++
+	goto __22
+	goto __24
+__24:
+	;
+
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == 'm') {
+		goto __25
+	}
+	wcs = uintptr(0)
+	s = uintptr(0)
+	alloc = BoolInt32(!!(dest != 0))
+	p++
+	goto __26
+__25:
+	alloc = 0
+__26:
+	;
+
+	size = 0
+	switch int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&p, 1)))) {
+	case 'h':
+		goto __28
+	case 'l':
+		goto __29
+	case 'j':
+		goto __30
+	case 'z':
+		goto __31
+	case 't':
+		goto __32
+	case 'L':
+		goto __33
+	case 'd':
+		goto __34
+	case 'i':
+		goto __35
+	case 'o':
+		goto __36
+	case 'u':
+		goto __37
+	case 'x':
+		goto __38
+	case 'a':
+		goto __39
+	case 'e':
+		goto __40
+	case 'f':
+		goto __41
+	case 'g':
+		goto __42
+	case 'A':
+		goto __43
+	case 'E':
+		goto __44
+	case 'F':
+		goto __45
+	case 'G':
+		goto __46
+	case 'X':
+		goto __47
+	case 's':
+		goto __48
+	case 'c':
+		goto __49
+	case '[':
+		goto __50
+	case 'S':
+		goto __51
+	case 'C':
+		goto __52
+	case 'p':
+		goto __53
+	case 'n':
+		goto __54
+	default:
+		goto __55
+	}
+	goto __27
+__28:
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == 'h') {
+		goto __56
+	}
+	p++
+	size = -2
+	goto __57
+__56:
+	size = -1
+__57:
+	;
+	goto __27
+__29:
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == 'l') {
+		goto __58
+	}
+	p++
+	size = 3
+	goto __59
+__58:
+	size = 1
+__59:
+	;
+	goto __27
+__30:
+	size = 3
+	goto __27
+__31:
+__32:
+	size = 1
+	goto __27
+__33:
+	size = 2
+	goto __27
+__34:
+__35:
+__36:
+__37:
+__38:
+__39:
+__40:
+__41:
+__42:
+__43:
+__44:
+__45:
+__46:
+__47:
+__48:
+__49:
+__50:
+__51:
+__52:
+__53:
+__54:
+	p--
+	goto __27
+__55:
+	goto fmt_fail
+__27:
+	;
+
+	t = int32(*(*uint8)(unsafe.Pointer(p)))
+
+	// C or S
+	if !(t&0x2f == 3) {
+		goto __60
+	}
+	t = t | 32
+	size = 1
+__60:
+	;
+
+	switch t {
+	case 'c':
+		goto __62
+	case '[':
+		goto __63
+	case 'n':
+		goto __64
+	default:
+		goto __65
+	}
+	goto __61
+__62:
+	if !(width < 1) {
+		goto __66
+	}
+	width = 1
+__66:
+	;
+__63:
+	goto __61
+__64:
+	store_int(tls, dest, size, uint64(pos))
+	// do not increment match count, etc!
+	goto __4
+__65:
+	X__shlim(tls, f, int64(0))
+__67:
+	if !(__isspace(tls, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}()) != 0) {
+		goto __68
+	}
+	goto __67
+__68:
+	;
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	pos = pos + ((*FILE)(unsafe.Pointer(f)).shcnt + (int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1)
+__61:
+	;
+
+	X__shlim(tls, f, int64(width))
+	if !(func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}() < 0) {
+		goto __69
+	}
+	goto input_fail
+__69:
+	;
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+
+	switch t {
+	case 's':
+		goto __71
+	case 'c':
+		goto __72
+	case '[':
+		goto __73
+	case 'p':
+		goto __74
+	case 'X':
+		goto __75
+	case 'x':
+		goto __76
+	case 'o':
+		goto __77
+	case 'd':
+		goto __78
+	case 'u':
+		goto __79
+	case 'i':
+		goto __80
+	case 'a':
+		goto __81
+	case 'A':
+		goto __82
+	case 'e':
+		goto __83
+	case 'E':
+		goto __84
+	case 'f':
+		goto __85
+	case 'F':
+		goto __86
+	case 'g':
+		goto __87
+	case 'G':
+		goto __88
+	}
+	goto __70
+__71:
+__72:
+__73:
+	if !(t == 'c' || t == 's') {
+		goto __89
+	}
+	Xmemset(tls, bp, -1, uint64(unsafe.Sizeof([257]uint8{})))
+	*(*uint8)(unsafe.Pointer(bp)) = uint8(0)
+	if !(t == 's') {
+		goto __91
+	}
+	*(*uint8)(unsafe.Pointer(bp + 10)) = uint8(0)
+	*(*uint8)(unsafe.Pointer(bp + 11)) = uint8(0)
+	*(*uint8)(unsafe.Pointer(bp + 12)) = uint8(0)
+	*(*uint8)(unsafe.Pointer(bp + 13)) = uint8(0)
+	*(*uint8)(unsafe.Pointer(bp + 14)) = uint8(0)
+	*(*uint8)(unsafe.Pointer(bp + 33)) = uint8(0)
+__91:
+	;
+	goto __90
+__89:
+	if !(int32(*(*uint8)(unsafe.Pointer(PreIncUintptr(&p, 1)))) == '^') {
+		goto __92
+	}
+	p++
+	invert = 1
+	goto __93
+__92:
+	invert = 0
+__93:
+	;
+	Xmemset(tls, bp, invert, uint64(unsafe.Sizeof([257]uint8{})))
+	*(*uint8)(unsafe.Pointer(bp)) = uint8(0)
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == '-') {
+		goto __94
+	}
+	p++
+	*(*uint8)(unsafe.Pointer(bp + 46)) = uint8(1 - invert)
+	goto __95
+__94:
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == ']') {
+		goto __96
+	}
+	p++
+	*(*uint8)(unsafe.Pointer(bp + 94)) = uint8(1 - invert)
+__96:
+	;
+__95:
+	;
+__97:
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) != ']') {
+		goto __99
+	}
+	if !!(int32(*(*uint8)(unsafe.Pointer(p))) != 0) {
+		goto __100
+	}
+	goto fmt_fail
+__100:
+	;
+	if !(int32(*(*uint8)(unsafe.Pointer(p))) == '-' && *(*uint8)(unsafe.Pointer(p + 1)) != 0 && int32(*(*uint8)(unsafe.Pointer(p + 1))) != ']') {
+		goto __101
+	}
+	c = int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&p, 1) + UintptrFromInt32(-1))))
+__102:
+	if !(c < int32(*(*uint8)(unsafe.Pointer(p)))) {
+		goto __104
+	}
+	*(*uint8)(unsafe.Pointer(bp + uintptr(1+c))) = uint8(1 - invert)
+	goto __103
+__103:
+	c++
+	goto __102
+	goto __104
+__104:
+	;
+__101:
+	;
+	*(*uint8)(unsafe.Pointer(bp + uintptr(1+int32(*(*uint8)(unsafe.Pointer(p)))))) = uint8(1 - invert)
+	goto __98
+__98:
+	p++
+	goto __97
+	goto __99
+__99:
+	;
+__90:
+	;
+	wcs = uintptr(0)
+	s = uintptr(0)
+	i = uint64(0)
+	if t == 'c' {
+		k = uint64(uint32(width) + 1)
+	} else {
+		k = uint64(31)
+	}
+	if !(size == 1) {
+		goto __105
+	}
+	if !(alloc != 0) {
+		goto __107
+	}
+	wcs = Xmalloc(tls, k*size_t(unsafe.Sizeof(wchar_t(0))))
+	if !!(wcs != 0) {
+		goto __109
+	}
+	goto alloc_fail
+__109:
+	;
+	goto __108
+__107:
+	wcs = dest
+__108:
+	;
+	*(*mbstate_t)(unsafe.Pointer(bp + 268 /* st */)) = mbstate_t{}
+__110:
+	if !(*(*uint8)(unsafe.Pointer(bp + uintptr(AssignInt32(&c, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}())+1))) != 0) {
+		goto __111
+	}
+	switch Xmbrtowc(tls, bp+260, func() uintptr { *(*uint8)(unsafe.Pointer(bp + 264)) = uint8(c); return bp + 264 }(), uint64(1), bp+268 /* &st */) {
+	case Uint64FromInt32(-1):
+		goto __113
+	case Uint64FromInt32(-2):
+		goto __114
+	}
+	goto __112
+__113:
+	goto input_fail
+__114:
+	goto __110
+__112:
+	;
+	if !(wcs != 0) {
+		goto __115
+	}
+	*(*wchar_t)(unsafe.Pointer(wcs + uintptr(PostIncUint64(&i, 1))*4)) = *(*wchar_t)(unsafe.Pointer(bp + 260 /* wc */))
+__115:
+	;
+	if !(alloc != 0 && i == k) {
+		goto __116
+	}
+	k = k + (k + uint64(1))
+	tmp = Xrealloc(tls, wcs, k*size_t(unsafe.Sizeof(wchar_t(0))))
+	if !!(tmp != 0) {
+		goto __117
+	}
+	goto alloc_fail
+__117:
+	;
+	wcs = tmp
+__116:
+	;
+	goto __110
+__111:
+	;
+	if !!(Xmbsinit(tls, bp+268) != 0) {
+		goto __118
+	}
+	goto input_fail
+__118:
+	;
+	goto __106
+__105:
+	if !(alloc != 0) {
+		goto __119
+	}
+	s = Xmalloc(tls, k)
+	if !!(s != 0) {
+		goto __121
+	}
+	goto alloc_fail
+__121:
+	;
+__122:
+	if !(*(*uint8)(unsafe.Pointer(bp + uintptr(AssignInt32(&c, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}())+1))) != 0) {
+		goto __123
+	}
+	*(*uint8)(unsafe.Pointer(s + uintptr(PostIncUint64(&i, 1)))) = uint8(c)
+	if !(i == k) {
+		goto __124
+	}
+	k = k + (k + uint64(1))
+	tmp1 = Xrealloc(tls, s, k)
+	if !!(tmp1 != 0) {
+		goto __125
+	}
+	goto alloc_fail
+__125:
+	;
+	s = tmp1
+__124:
+	;
+	goto __122
+__123:
+	;
+	goto __120
+__119:
+	if !(AssignUintptr(&s, dest) != 0) {
+		goto __126
+	}
+__128:
+	if !(*(*uint8)(unsafe.Pointer(bp + uintptr(AssignInt32(&c, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}())+1))) != 0) {
+		goto __129
+	}
+	*(*uint8)(unsafe.Pointer(s + uintptr(PostIncUint64(&i, 1)))) = uint8(c)
+	goto __128
+__129:
+	;
+	goto __127
+__126:
+__130:
+	if !(*(*uint8)(unsafe.Pointer(bp + uintptr(AssignInt32(&c, func() int32 {
+		if (*FILE)(unsafe.Pointer(f)).rpos != (*FILE)(unsafe.Pointer(f)).shend {
+			return int32(*(*uint8)(unsafe.Pointer(PostIncUintptr(&(*FILE)(unsafe.Pointer(f)).rpos, 1))))
+		}
+		return X__shgetc(tls, f)
+	}())+1))) != 0) {
+		goto __131
+	}
+	goto __130
+__131:
+	;
+__127:
+	;
+__120:
+	;
+__106:
+	;
+	if (*FILE)(unsafe.Pointer(f)).shlim >= int64(0) {
+		(*FILE)(unsafe.Pointer(f)).rpos--
+	} else {
+	}
+	if !!((*FILE)(unsafe.Pointer(f)).shcnt+(int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1 != 0) {
+		goto __132
+	}
+	goto match_fail
+__132:
+	;
+	if !(t == 'c' && (*FILE)(unsafe.Pointer(f)).shcnt+(int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1 != off_t(width)) {
+		goto __133
+	}
+	goto match_fail
+__133:
+	;
+	if !(alloc != 0) {
+		goto __134
+	}
+	if !(size == 1) {
+		goto __135
+	}
+	*(*uintptr)(unsafe.Pointer(dest)) = wcs
+	goto __136
+__135:
+	*(*uintptr)(unsafe.Pointer(dest)) = s
+__136:
+	;
+__134:
+	;
+	if !(t != 'c') {
+		goto __137
+	}
+	if !(wcs != 0) {
+		goto __138
+	}
+	*(*wchar_t)(unsafe.Pointer(wcs + uintptr(i)*4)) = 0
+__138:
+	;
+	if !(s != 0) {
+		goto __139
+	}
+	*(*uint8)(unsafe.Pointer(s + uintptr(i))) = uint8(0)
+__139:
+	;
+__137:
+	;
+	goto __70
+__74:
+__75:
+__76:
+	base = 16
+	goto int_common
+__77:
+	base = 8
+	goto int_common
+__78:
+__79:
+	base = 10
+	goto int_common
+__80:
+	base = 0
+int_common:
+	x = X__intscan(tls, f, uint32(base), 0, 2*uint64(0x7fffffffffffffff)+uint64(1))
+	if !!((*FILE)(unsafe.Pointer(f)).shcnt+(int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1 != 0) {
+		goto __140
+	}
+	goto match_fail
+__140:
+	;
+	if !(t == 'p' && dest != 0) {
+		goto __141
+	}
+	*(*uintptr)(unsafe.Pointer(dest)) = uintptr(uintptr_t(x))
+	goto __142
+__141:
+	store_int(tls, dest, size, x)
+__142:
+	;
+	goto __70
+__81:
+__82:
+__83:
+__84:
+__85:
+__86:
+__87:
+__88:
+	y = X__floatscan(tls, f, size, 0)
+	if !!((*FILE)(unsafe.Pointer(f)).shcnt+(int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1 != 0) {
+		goto __143
+	}
+	goto match_fail
+__143:
+	;
+	if !(dest != 0) {
+		goto __144
+	}
+	switch size {
+	case 0:
+		goto __146
+	case 1:
+		goto __147
+	case 2:
+		goto __148
+	}
+	goto __145
+__146:
+	*(*float32)(unsafe.Pointer(dest)) = float32(y)
+	goto __145
+__147:
+	*(*float64)(unsafe.Pointer(dest)) = y
+	goto __145
+__148:
+	*(*float64)(unsafe.Pointer(dest)) = y
+	goto __145
+__145:
+	;
+__144:
+	;
+	goto __70
+__70:
+	;
+
+	pos = pos + ((*FILE)(unsafe.Pointer(f)).shcnt + (int64((*FILE)(unsafe.Pointer(f)).rpos)-int64((*FILE)(unsafe.Pointer(f)).buf))/1)
+	if !(dest != 0) {
+		goto __149
+	}
+	matches++
+__149:
+	;
+	goto __4
+__4:
+	p++
+	goto __3
+	goto __5
+__5:
+	;
+	if !(0 != 0) {
+		goto __150
+	}
+fmt_fail:
+alloc_fail:
+input_fail:
+	if !!(matches != 0) {
+		goto __151
+	}
+	matches--
+__151:
+	;
+match_fail:
+	if !(alloc != 0) {
+		goto __152
+	}
+	Xfree(tls, s)
+	Xfree(tls, wcs)
+__152:
+	;
+__150:
+	;
+__153:
+	if !(__need_unlock != 0) {
+		goto __156
+	}
+	X__unlockfile(tls, f)
+__156:
+	;
+	goto __154
+__154:
+	if 0 != 0 {
+		goto __153
+	}
+	goto __155
+__155:
+	;
+	return matches
+}
+
+func string_read(tls *TLS, f uintptr, buf uintptr, len size_t) size_t { /* vsscanf.c:4:15: */
+	var src uintptr = (*FILE)(unsafe.Pointer(f)).cookie
+	var k size_t = len + uint64(256)
+	var end uintptr = Xmemchr(tls, src, 0, k)
+	if end != 0 {
+		k = size_t((int64(end) - int64(src)) / 1)
+	}
+	if k < len {
+		len = k
+	}
+	Xmemcpy(tls, buf, src, len)
+	(*FILE)(unsafe.Pointer(f)).rpos = src + uintptr(len)
+	(*FILE)(unsafe.Pointer(f)).rend = src + uintptr(k)
+	(*FILE)(unsafe.Pointer(f)).cookie = src + uintptr(k)
+	return len
+}
+
+func Xvsscanf(tls *TLS, s uintptr, fmt uintptr, ap va_list) int32 { /* vsscanf.c:18:5: */
+	bp := tls.Alloc(232)
+	defer tls.Free(232)
+
+	*(*FILE)(unsafe.Pointer(bp /* f */)) = FILE{read: *(*uintptr)(unsafe.Pointer(&struct {
+		f func(*TLS, uintptr, uintptr, size_t) size_t
+	}{string_read})), buf: s, lock: -1, cookie: s}
+	return Xvfscanf(tls, bp, fmt, ap)
+}
+
+func Xbsearch(tls *TLS, key uintptr, base uintptr, nel size_t, width size_t, cmp uintptr) uintptr { /* bsearch.c:3:6: */
+	var try uintptr
+	var sign int32
+	for nel > uint64(0) {
+		try = base + uintptr(width*(nel/uint64(2)))
+		sign = (*struct {
+			f func(*TLS, uintptr, uintptr) int32
+		})(unsafe.Pointer(&struct{ uintptr }{cmp})).f(tls, key, try)
+		if sign < 0 {
+			nel = nel / uint64(2)
+		} else if sign > 0 {
+			base = try + uintptr(width)
+			nel = nel - (nel/uint64(2) + uint64(1))
+		} else {
+			return try
+		}
+	}
+	return uintptr(0)
+}
+
+func strtox(tls *TLS, s uintptr, p uintptr, prec int32) float64 { /* strtod.c:6:20: */
+	bp := tls.Alloc(232)
+	defer tls.Free(232)
+
+	// var f FILE at bp, 232
+
+	(*FILE)(unsafe.Pointer(bp)).buf = AssignPtrUintptr(bp+8, s)
+	(*FILE)(unsafe.Pointer(bp)).rend = UintptrFromInt32(-1)
+	X__shlim(tls, bp, int64(0))
+	var y float64 = X__floatscan(tls, bp, prec, 1)
+	var cnt off_t = (*FILE)(unsafe.Pointer(bp)).shcnt + (int64((*FILE)(unsafe.Pointer(bp)).rpos)-int64((*FILE)(unsafe.Pointer(bp)).buf))/1
+	if p != 0 {
+		*(*uintptr)(unsafe.Pointer(p)) = func() uintptr {
+			if cnt != 0 {
+				return s + uintptr(cnt)
+			}
+			return s
+		}()
+	}
+	return y
+}
+
+func Xstrtof(tls *TLS, s uintptr, p uintptr) float32 { /* strtod.c:17:7: */
+	return float32(strtox(tls, s, p, 0))
+}
+
+func Xstrtod(tls *TLS, s uintptr, p uintptr) float64 { /* strtod.c:22:8: */
+	return strtox(tls, s, p, 1)
+}
+
+func Xstrtold(tls *TLS, s uintptr, p uintptr) float64 { /* strtod.c:27:13: */
+	return strtox(tls, s, p, 2)
+}
+
+func strtox1(tls *TLS, s uintptr, p uintptr, base int32, lim uint64) uint64 { /* strtol.c:8:27: */
+	bp := tls.Alloc(232)
+	defer tls.Free(232)
+
+	// var f FILE at bp, 232
+
+	(*FILE)(unsafe.Pointer(bp)).buf = AssignPtrUintptr(bp+8, s)
+	(*FILE)(unsafe.Pointer(bp)).rend = UintptrFromInt32(-1)
+	X__shlim(tls, bp, int64(0))
+	var y uint64 = X__intscan(tls, bp, uint32(base), 1, lim)
+	if p != 0 {
+		var cnt size_t = size_t((*FILE)(unsafe.Pointer(bp)).shcnt + (int64((*FILE)(unsafe.Pointer(bp)).rpos)-int64((*FILE)(unsafe.Pointer(bp)).buf))/1)
+		*(*uintptr)(unsafe.Pointer(p)) = s + uintptr(cnt)
+	}
+	return y
+}
+
+func Xstrtoull(tls *TLS, s uintptr, p uintptr, base int32) uint64 { /* strtol.c:21:20: */
+	return strtox1(tls, s, p, base, 2*uint64(0x7fffffffffffffff)+uint64(1))
+}
+
+func Xstrtoll(tls *TLS, s uintptr, p uintptr, base int32) int64 { /* strtol.c:26:11: */
+	return int64(strtox1(tls, s, p, base, Uint64FromInt64(-0x7fffffffffffffff-int64(1))))
+}
+
+func Xstrtoul(tls *TLS, s uintptr, p uintptr, base int32) uint64 { /* strtol.c:31:15: */
+	return uint64(strtox1(tls, s, p, base, 2*uint64(0x7fffffffffffffff)+uint64(1)))
+}
+
+func Xstrtol(tls *TLS, s uintptr, p uintptr, base int32) int64 { /* strtol.c:36:6: */
+	return int64(strtox1(tls, s, p, base, 0+Uint64FromInt64(Int64(-Int64(0x7fffffffffffffff))-Int64FromInt32(1))))
+}
+
+func Xstrtoimax(tls *TLS, s uintptr, p uintptr, base int32) intmax_t { /* strtol.c:41:10: */
+	return intmax_t(Xstrtoll(tls, s, p, base))
+}
+
+func Xstrtoumax(tls *TLS, s uintptr, p uintptr, base int32) uintmax_t { /* strtol.c:46:11: */
+	return uintmax_t(Xstrtoull(tls, s, p, base))
+}
+
+func Xstrdup(tls *TLS, s uintptr) uintptr { /* strdup.c:4:6: */
+	var l size_t = Xstrlen(tls, s)
+	var d uintptr = Xmalloc(tls, l+uint64(1))
+	if !(d != 0) {
+		return uintptr(0)
+	}
+	return Xmemcpy(tls, d, s, l+uint64(1))
+}
+
+func Xstrlcat(tls *TLS, d uintptr, s uintptr, n size_t) size_t { /* strlcat.c:4:8: */
+	var l size_t = Xstrnlen(tls, d, n)
+	if l == n {
+		return l + Xstrlen(tls, s)
+	}
+	return l + Xstrlcpy(tls, d+uintptr(l), s, n-l)
+}
+
+// Support signed or unsigned plain-char
+
+// Implementation choices...
+
+// Arbitrary numbers...
+
+// POSIX/SUS requirements follow. These numbers come directly
+// from SUS and have nothing to do with the host system.
+
+func Xstrlcpy(tls *TLS, d uintptr, s uintptr, n size_t) size_t { /* strlcpy.c:11:8: */
+	var d0 uintptr
+	var wd uintptr
+	var ws uintptr
+	d0 = d
+
+	if !!(int32(PostDecUint64(&n, 1)) != 0) {
+		goto __1
+	}
+	goto finish
+__1:
+	;
+	if !(uintptr_t(s)&(uint64(unsafe.Sizeof(size_t(0)))-uint64(1)) == uintptr_t(d)&(uint64(unsafe.Sizeof(size_t(0)))-uint64(1))) {
+		goto __2
+	}
+__3:
+	if !(uintptr_t(s)&(uint64(unsafe.Sizeof(size_t(0)))-uint64(1)) != 0 && n != 0 && AssignPtrUint8(d, *(*uint8)(unsafe.Pointer(s))) != 0) {
+		goto __5
+	}
+	goto __4
+__4:
+	n--
+	s++
+	d++
+	goto __3
+	goto __5
+__5:
+	;
+	if !(n != 0 && *(*uint8)(unsafe.Pointer(s)) != 0) {
+		goto __6
+	}
+	wd = d
+	ws = s
+__7:
+	if !(n >= size_t(unsafe.Sizeof(size_t(0))) && !((*(*uint64)(unsafe.Pointer(ws))-Uint64(Uint64FromInt32(-1))/uint64(255)) & ^*(*uint64)(unsafe.Pointer(ws)) & (Uint64(Uint64FromInt32(-1))/uint64(255)*uint64(255/2+1)) != 0)) {
+		goto __9
+	}
+	*(*size_t)(unsafe.Pointer(wd)) = *(*uint64)(unsafe.Pointer(ws))
+	goto __8
+__8:
+	n = n - size_t(unsafe.Sizeof(size_t(0)))
+	ws += 8
+	wd += 8
+	goto __7
+	goto __9
+__9:
+	;
+	d = wd
+	s = ws
+__6:
+	;
+__2:
+	;
+__10:
+	if !(n != 0 && AssignPtrUint8(d, *(*uint8)(unsafe.Pointer(s))) != 0) {
+		goto __12
+	}
+	goto __11
+__11:
+	n--
+	s++
+	d++
+	goto __10
+	goto __12
+__12:
+	;
+	*(*uint8)(unsafe.Pointer(d)) = uint8(0)
+finish:
+	return size_t((int64(d)-int64(d0))/1) + Xstrlen(tls, s)
+}
+
+func Xstrncasecmp(tls *TLS, _l uintptr, _r uintptr, n size_t) int32 { /* strncasecmp.c:4:5: */
+	var l uintptr = _l
+	var r uintptr = _r
+	if !(int32(PostDecUint64(&n, 1)) != 0) {
+		return 0
+	}
+__1:
+	if !(*(*uint8)(unsafe.Pointer(l)) != 0 && *(*uint8)(unsafe.Pointer(r)) != 0 && n != 0 && (int32(*(*uint8)(unsafe.Pointer(l))) == int32(*(*uint8)(unsafe.Pointer(r))) || Xtolower(tls, int32(*(*uint8)(unsafe.Pointer(l)))) == Xtolower(tls, int32(*(*uint8)(unsafe.Pointer(r)))))) {
+		goto __3
+	}
+	goto __2
+__2:
+	l++
+	r++
+	n--
+	goto __1
+	goto __3
+__3:
+	;
+	return Xtolower(tls, int32(*(*uint8)(unsafe.Pointer(l)))) - Xtolower(tls, int32(*(*uint8)(unsafe.Pointer(r))))
+}
+
+func X__strncasecmp_l(tls *TLS, l uintptr, r uintptr, n size_t, loc locale_t) int32 { /* strncasecmp.c:12:5: */
+	return Xstrncasecmp(tls, l, r, n)
+}
+
+func Xstrncat(tls *TLS, d uintptr, s uintptr, n size_t) uintptr { /* strncat.c:3:6: */
+	var a uintptr = d
+	d += uintptr(Xstrlen(tls, d))
+	for n != 0 && *(*uint8)(unsafe.Pointer(s)) != 0 {
+		n--
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&d, 1))) = *(*uint8)(unsafe.Pointer(PostIncUintptr(&s, 1)))
+	}
+	*(*uint8)(unsafe.Pointer(PostIncUintptr(&d, 1))) = uint8(0)
+	return a
+}
+
+func Xstrnlen(tls *TLS, s uintptr, n size_t) size_t { /* strnlen.c:3:8: */
+	var p uintptr = Xmemchr(tls, s, 0, n)
+	if p != 0 {
+		return uint64((int64(p) - int64(s)) / 1)
+	}
+	return n
+}
+
+func Xstrspn(tls *TLS, s uintptr, c uintptr) size_t { /* strspn.c:6:8: */
+	bp := tls.Alloc(32)
+	defer tls.Free(32)
+
+	var a uintptr = s
+	*(*[4]size_t)(unsafe.Pointer(bp /* byteset */)) = [4]size_t{0: uint64(0)}
+
+	if !(int32(*(*uint8)(unsafe.Pointer(c))) != 0) {
+		return uint64(0)
+	}
+	if !(int32(*(*uint8)(unsafe.Pointer(c + 1))) != 0) {
+		for ; int32(*(*uint8)(unsafe.Pointer(s))) == int32(*(*uint8)(unsafe.Pointer(c))); s++ {
+		}
+		return size_t((int64(s) - int64(a)) / 1)
+	}
+
+	for ; *(*uint8)(unsafe.Pointer(c)) != 0 && AssignOrPtrUint64(bp+uintptr(size_t(*(*uint8)(unsafe.Pointer(c)))/(uint64(8)*uint64(unsafe.Sizeof(size_t(0)))))*8, size_t(uint64(1))<<(size_t(*(*uint8)(unsafe.Pointer(c)))%(uint64(8)*uint64(unsafe.Sizeof(size_t(0)))))) != 0; c++ {
+	}
+	for ; *(*uint8)(unsafe.Pointer(s)) != 0 && *(*size_t)(unsafe.Pointer(bp + uintptr(size_t(*(*uint8)(unsafe.Pointer(s)))/(uint64(8)*uint64(unsafe.Sizeof(size_t(0)))))*8))&(size_t(uint64(1))<<(size_t(*(*uint8)(unsafe.Pointer(s)))%(uint64(8)*uint64(unsafe.Sizeof(size_t(0)))))) != 0; s++ {
+	}
+	return size_t((int64(s) - int64(a)) / 1)
+}
+
+func Xstrtok(tls *TLS, s uintptr, sep uintptr) uintptr { /* strtok.c:3:6: */
+	if !(s != 0) && !(int32(AssignUintptr(&s, _sp)) != 0) {
+		return uintptr(0)
+	}
+	s += uintptr(Xstrspn(tls, s, sep))
+	if !(int32(*(*uint8)(unsafe.Pointer(s))) != 0) {
+		return AssignPtrUintptr(uintptr(unsafe.Pointer(&_sp)), uintptr(0))
+	}
+	_sp = s + uintptr(Xstrcspn(tls, s, sep))
+	if *(*uint8)(unsafe.Pointer(_sp)) != 0 {
+		*(*uint8)(unsafe.Pointer(PostIncUintptr(&_sp, 1))) = uint8(0)
+	} else {
+		_sp = uintptr(0)
+	}
+	return s
+}
+
+var _sp uintptr /* strtok.c:5:14: */
+
+func X__ccgo_pthreadAttrGetDetachState(tls *TLS, a uintptr) int32 { /* pthread_attr_get.c:3:5: */
+	return *(*int32)(unsafe.Pointer(a + 6*4))
+}
+
+func Xpthread_attr_getdetachstate(tls *TLS, a uintptr, state uintptr) int32 { /* pthread_attr_get.c:7:5: */
+	*(*int32)(unsafe.Pointer(state)) = *(*int32)(unsafe.Pointer(a + 6*4))
+	return 0
+}
+
+//
+// int pthread_attr_getguardsize(const pthread_attr_t *restrict a, size_t *restrict size)
+// {
+// 	*size = a->_a_guardsize;
+// 	return 0;
+// }
+//
+// int pthread_attr_getinheritsched(const pthread_attr_t *restrict a, int *restrict inherit)
+// {
+// 	*inherit = a->_a_sched;
+// 	return 0;
+// }
+//
+// int pthread_attr_getschedparam(const pthread_attr_t *restrict a, struct sched_param *restrict param)
+// {
+// 	param->sched_priority = a->_a_prio;
+// 	return 0;
+// }
+//
+// int pthread_attr_getschedpolicy(const pthread_attr_t *restrict a, int *restrict policy)
+// {
+// 	*policy = a->_a_policy;
+// 	return 0;
+// }
+//
+// int pthread_attr_getscope(const pthread_attr_t *restrict a, int *restrict scope)
+// {
+// 	*scope = PTHREAD_SCOPE_SYSTEM;
+// 	return 0;
+// }
+//
+// int pthread_attr_getstack(const pthread_attr_t *restrict a, void **restrict addr, size_t *restrict size)
+// {
+// 	if (!a->_a_stackaddr)
+// 		return EINVAL;
+// 	*size = a->_a_stacksize;
+// 	*addr = (void *)(a->_a_stackaddr - *size);
+// 	return 0;
+// }
+//
+// int pthread_attr_getstacksize(const pthread_attr_t *restrict a, size_t *restrict size)
+// {
+// 	*size = a->_a_stacksize;
+// 	return 0;
+// }
+//
+// int pthread_barrierattr_getpshared(const pthread_barrierattr_t *restrict a, int *restrict pshared)
+// {
+// 	*pshared = !!a->__attr;
+// 	return 0;
+// }
+//
+// int pthread_condattr_getclock(const pthread_condattr_t *restrict a, clockid_t *restrict clk)
+// {
+// 	*clk = a->__attr & 0x7fffffff;
+// 	return 0;
+// }
+//
+// int pthread_condattr_getpshared(const pthread_condattr_t *restrict a, int *restrict pshared)
+// {
+// 	*pshared = a->__attr>>31;
+// 	return 0;
+// }
+//
+// int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *restrict a, int *restrict protocol)
+// {
+// 	*protocol = PTHREAD_PRIO_NONE;
+// 	return 0;
+// }
+// int pthread_mutexattr_getpshared(const pthread_mutexattr_t *restrict a, int *restrict pshared)
+// {
+// 	*pshared = a->__attr / 128U % 2;
+// 	return 0;
+// }
+//
+// int pthread_mutexattr_getrobust(const pthread_mutexattr_t *restrict a, int *restrict robust)
+// {
+// 	*robust = a->__attr / 4U % 2;
+// 	return 0;
+// }
+
+func X__ccgo_pthreadMutexattrGettype(tls *TLS, a uintptr) int32 { /* pthread_attr_get.c:93:5: */
+	return int32((*pthread_mutexattr_t)(unsafe.Pointer(a)).__attr & uint32(3))
+}
+
+// int pthread_mutexattr_gettype(const pthread_mutexattr_t *restrict a, int *restrict type)
+// {
+// 	*type = a->__attr & 3;
+// 	return 0;
+// }
+//
+// int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *restrict a, int *restrict pshared)
+// {
+// 	*pshared = a->__attr[0];
+// 	return 0;
+// }
+
+func Xpthread_attr_setdetachstate(tls *TLS, a uintptr, state int32) int32 { /* pthread_attr_setdetachstate.c:3:5: */
+	if uint32(state) > 1 {
+		return 22
+	}
+	*(*int32)(unsafe.Pointer(a + 6*4)) = state
+	return 0
+}
+
+func X__ccgo_getMutexType(tls *TLS, m uintptr) int32 { /* pthread_mutex_lock.c:3:5: */
+	return *(*int32)(unsafe.Pointer(m)) & 15
+}
+
+// int __pthread_mutex_lock(pthread_mutex_t *m)
+// {
+// 	if ((m->_m_type&15) == PTHREAD_MUTEX_NORMAL
+// 	    && !a_cas(&m->_m_lock, 0, EBUSY))
+// 		return 0;
+//
+// 	return __pthread_mutex_timedlock(m, 0);
+// }
+//
+// weak_alias(__pthread_mutex_lock, pthread_mutex_lock);
+
+func Xpthread_mutexattr_destroy(tls *TLS, a uintptr) int32 { /* pthread_mutexattr_destroy.c:3:5: */
+	return 0
+}
+
+func Xpthread_mutexattr_init(tls *TLS, a uintptr) int32 { /* pthread_mutexattr_init.c:3:5: */
+	*(*pthread_mutexattr_t)(unsafe.Pointer(a)) = pthread_mutexattr_t{}
+	return 0
+}
+
+func Xpthread_mutexattr_settype(tls *TLS, a uintptr, type1 int32) int32 { /* pthread_mutexattr_settype.c:3:5: */
+	if uint32(type1) > uint32(2) {
+		return 22
+	}
+	(*pthread_mutexattr_t)(unsafe.Pointer(a)).__attr = (*pthread_mutexattr_t)(unsafe.Pointer(a)).__attr&Uint32FromInt32(CplInt32(3)) | uint32(type1)
+	return 0
+}
+
+func init() {
+	*(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&ptable)) + 0)) = uintptr(unsafe.Pointer(&table)) + uintptr(128)*2 // __ctype_b_loc.c:36:45:
+}
+
+var ts1 = "infinity\x00nan\x00\x00\x00\x01\x02\x04\a\x03\x06\x05\x00.\x00%d.%d.%d.%d.in-addr.arpa\x00ip6.arpa\x000123456789abcdef\x00/etc/hosts\x00rb\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\x00%d.%d.%d.%d\x00%x:%x:%x:%x:%x:%x:%x:%x\x00%x:%x:%x:%x:%x:%x:%d.%d.%d.%d\x00:0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\x00\x00\x00\x00 \x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00 \x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfc\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+var ts = (*reflect.StringHeader)(unsafe.Pointer(&ts1)).Data
diff --git a/vendor/modernc.org/libc/netdb/capi_linux_riscv64.go b/vendor/modernc.org/libc/netdb/capi_linux_riscv64.go
new file mode 100644
index 00000000..9029223c
--- /dev/null
+++ b/vendor/modernc.org/libc/netdb/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo netdb/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o netdb/netdb_linux_riscv64.go -pkgname netdb', DO NOT EDIT.
+
+package netdb
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/netdb/netdb_linux_riscv64.go b/vendor/modernc.org/libc/netdb/netdb_linux_riscv64.go
new file mode 100644
index 00000000..0f2867e6
--- /dev/null
+++ b/vendor/modernc.org/libc/netdb/netdb_linux_riscv64.go
@@ -0,0 +1,3280 @@
+// Code generated by 'ccgo netdb/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o netdb/netdb_linux_riscv64.go -pkgname netdb', DO NOT EDIT.
+
+package netdb
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	AF_ALG                           = 38
+	AF_APPLETALK                     = 5
+	AF_ASH                           = 18
+	AF_ATMPVC                        = 8
+	AF_ATMSVC                        = 20
+	AF_AX25                          = 3
+	AF_BLUETOOTH                     = 31
+	AF_BRIDGE                        = 7
+	AF_CAIF                          = 37
+	AF_CAN                           = 29
+	AF_DECnet                        = 12
+	AF_ECONET                        = 19
+	AF_FILE                          = 1
+	AF_IB                            = 27
+	AF_IEEE802154                    = 36
+	AF_INET                          = 2
+	AF_INET6                         = 10
+	AF_IPX                           = 4
+	AF_IRDA                          = 23
+	AF_ISDN                          = 34
+	AF_IUCV                          = 32
+	AF_KCM                           = 41
+	AF_KEY                           = 15
+	AF_LLC                           = 26
+	AF_LOCAL                         = 1
+	AF_MAX                           = 45
+	AF_MPLS                          = 28
+	AF_NETBEUI                       = 13
+	AF_NETLINK                       = 16
+	AF_NETROM                        = 6
+	AF_NFC                           = 39
+	AF_PACKET                        = 17
+	AF_PHONET                        = 35
+	AF_PPPOX                         = 24
+	AF_QIPCRTR                       = 42
+	AF_RDS                           = 21
+	AF_ROSE                          = 11
+	AF_ROUTE                         = 16
+	AF_RXRPC                         = 33
+	AF_SECURITY                      = 14
+	AF_SMC                           = 43
+	AF_SNA                           = 22
+	AF_TIPC                          = 30
+	AF_UNIX                          = 1
+	AF_UNSPEC                        = 0
+	AF_VSOCK                         = 40
+	AF_WANPIPE                       = 25
+	AF_X25                           = 9
+	AF_XDP                           = 44
+	AI_ADDRCONFIG                    = 0x0020
+	AI_ALL                           = 0x0010
+	AI_CANONNAME                     = 0x0002
+	AI_NUMERICHOST                   = 0x0004
+	AI_NUMERICSERV                   = 0x0400
+	AI_PASSIVE                       = 0x0001
+	AI_V4MAPPED                      = 0x0008
+	BIG_ENDIAN                       = 4321
+	BYTE_ORDER                       = 1234
+	EAI_AGAIN                        = -3
+	EAI_BADFLAGS                     = -1
+	EAI_FAIL                         = -4
+	EAI_FAMILY                       = -6
+	EAI_MEMORY                       = -10
+	EAI_NONAME                       = -2
+	EAI_OVERFLOW                     = -12
+	EAI_SERVICE                      = -8
+	EAI_SOCKTYPE                     = -7
+	EAI_SYSTEM                       = -11
+	FD_SETSIZE                       = 1024
+	FIOGETOWN                        = 0x8903
+	FIOSETOWN                        = 0x8901
+	HOST_NOT_FOUND                   = 1
+	INET6_ADDRSTRLEN                 = 46
+	INET_ADDRSTRLEN                  = 16
+	IN_CLASSA_HOST                   = 16777215
+	IN_CLASSA_MAX                    = 128
+	IN_CLASSA_NET                    = 0xff000000
+	IN_CLASSA_NSHIFT                 = 24
+	IN_CLASSB_HOST                   = 65535
+	IN_CLASSB_MAX                    = 65536
+	IN_CLASSB_NET                    = 0xffff0000
+	IN_CLASSB_NSHIFT                 = 16
+	IN_CLASSC_HOST                   = 255
+	IN_CLASSC_NET                    = 0xffffff00
+	IN_CLASSC_NSHIFT                 = 8
+	IN_LOOPBACKNET                   = 127
+	IPPORT_RESERVED1                 = 1024
+	IPV6_2292DSTOPTS                 = 4
+	IPV6_2292HOPLIMIT                = 8
+	IPV6_2292HOPOPTS                 = 3
+	IPV6_2292PKTINFO                 = 2
+	IPV6_2292PKTOPTIONS              = 6
+	IPV6_2292RTHDR                   = 5
+	IPV6_ADDRFORM                    = 1
+	IPV6_ADDR_PREFERENCES            = 72
+	IPV6_ADD_MEMBERSHIP              = 20
+	IPV6_AUTHHDR                     = 10
+	IPV6_AUTOFLOWLABEL               = 70
+	IPV6_CHECKSUM                    = 7
+	IPV6_DONTFRAG                    = 62
+	IPV6_DROP_MEMBERSHIP             = 21
+	IPV6_DSTOPTS                     = 59
+	IPV6_FREEBIND                    = 78
+	IPV6_HDRINCL                     = 36
+	IPV6_HOPLIMIT                    = 52
+	IPV6_HOPOPTS                     = 54
+	IPV6_IPSEC_POLICY                = 34
+	IPV6_JOIN_ANYCAST                = 27
+	IPV6_JOIN_GROUP                  = 20
+	IPV6_LEAVE_ANYCAST               = 28
+	IPV6_LEAVE_GROUP                 = 21
+	IPV6_MINHOPCOUNT                 = 73
+	IPV6_MTU                         = 24
+	IPV6_MTU_DISCOVER                = 23
+	IPV6_MULTICAST_ALL               = 29
+	IPV6_MULTICAST_HOPS              = 18
+	IPV6_MULTICAST_IF                = 17
+	IPV6_MULTICAST_LOOP              = 19
+	IPV6_NEXTHOP                     = 9
+	IPV6_ORIGDSTADDR                 = 74
+	IPV6_PATHMTU                     = 61
+	IPV6_PKTINFO                     = 50
+	IPV6_PMTUDISC_DO                 = 2
+	IPV6_PMTUDISC_DONT               = 0
+	IPV6_PMTUDISC_INTERFACE          = 4
+	IPV6_PMTUDISC_OMIT               = 5
+	IPV6_PMTUDISC_PROBE              = 3
+	IPV6_PMTUDISC_WANT               = 1
+	IPV6_RECVDSTOPTS                 = 58
+	IPV6_RECVERR                     = 25
+	IPV6_RECVERR_RFC4884             = 31
+	IPV6_RECVFRAGSIZE                = 77
+	IPV6_RECVHOPLIMIT                = 51
+	IPV6_RECVHOPOPTS                 = 53
+	IPV6_RECVORIGDSTADDR             = 74
+	IPV6_RECVPATHMTU                 = 60
+	IPV6_RECVPKTINFO                 = 49
+	IPV6_RECVRTHDR                   = 56
+	IPV6_RECVTCLASS                  = 66
+	IPV6_ROUTER_ALERT                = 22
+	IPV6_ROUTER_ALERT_ISOLATE        = 30
+	IPV6_RTHDR                       = 57
+	IPV6_RTHDRDSTOPTS                = 55
+	IPV6_RTHDR_LOOSE                 = 0
+	IPV6_RTHDR_STRICT                = 1
+	IPV6_RTHDR_TYPE_0                = 0
+	IPV6_RXDSTOPTS                   = 59
+	IPV6_RXHOPOPTS                   = 54
+	IPV6_TCLASS                      = 67
+	IPV6_TRANSPARENT                 = 75
+	IPV6_UNICAST_HOPS                = 16
+	IPV6_UNICAST_IF                  = 76
+	IPV6_V6ONLY                      = 26
+	IPV6_XFRM_POLICY                 = 35
+	IP_ADD_MEMBERSHIP                = 35
+	IP_ADD_SOURCE_MEMBERSHIP         = 39
+	IP_BIND_ADDRESS_NO_PORT          = 24
+	IP_BLOCK_SOURCE                  = 38
+	IP_CHECKSUM                      = 23
+	IP_DEFAULT_MULTICAST_LOOP        = 1
+	IP_DEFAULT_MULTICAST_TTL         = 1
+	IP_DROP_MEMBERSHIP               = 36
+	IP_DROP_SOURCE_MEMBERSHIP        = 40
+	IP_FREEBIND                      = 15
+	IP_HDRINCL                       = 3
+	IP_IPSEC_POLICY                  = 16
+	IP_MAX_MEMBERSHIPS               = 20
+	IP_MINTTL                        = 21
+	IP_MSFILTER                      = 41
+	IP_MTU                           = 14
+	IP_MTU_DISCOVER                  = 10
+	IP_MULTICAST_ALL                 = 49
+	IP_MULTICAST_IF                  = 32
+	IP_MULTICAST_LOOP                = 34
+	IP_MULTICAST_TTL                 = 33
+	IP_NODEFRAG                      = 22
+	IP_OPTIONS                       = 4
+	IP_ORIGDSTADDR                   = 20
+	IP_PASSSEC                       = 18
+	IP_PKTINFO                       = 8
+	IP_PKTOPTIONS                    = 9
+	IP_PMTUDISC                      = 10
+	IP_PMTUDISC_DO                   = 2
+	IP_PMTUDISC_DONT                 = 0
+	IP_PMTUDISC_INTERFACE            = 4
+	IP_PMTUDISC_OMIT                 = 5
+	IP_PMTUDISC_PROBE                = 3
+	IP_PMTUDISC_WANT                 = 1
+	IP_RECVERR                       = 11
+	IP_RECVERR_RFC4884               = 26
+	IP_RECVFRAGSIZE                  = 25
+	IP_RECVOPTS                      = 6
+	IP_RECVORIGDSTADDR               = 20
+	IP_RECVRETOPTS                   = 7
+	IP_RECVTOS                       = 13
+	IP_RECVTTL                       = 12
+	IP_RETOPTS                       = 7
+	IP_ROUTER_ALERT                  = 5
+	IP_TOS                           = 1
+	IP_TRANSPARENT                   = 19
+	IP_TTL                           = 2
+	IP_UNBLOCK_SOURCE                = 37
+	IP_UNICAST_IF                    = 50
+	IP_XFRM_POLICY                   = 17
+	LITTLE_ENDIAN                    = 1234
+	MCAST_BLOCK_SOURCE               = 43
+	MCAST_EXCLUDE                    = 0
+	MCAST_INCLUDE                    = 1
+	MCAST_JOIN_GROUP                 = 42
+	MCAST_JOIN_SOURCE_GROUP          = 46
+	MCAST_LEAVE_GROUP                = 45
+	MCAST_LEAVE_SOURCE_GROUP         = 47
+	MCAST_MSFILTER                   = 48
+	MCAST_UNBLOCK_SOURCE             = 44
+	NETDB_INTERNAL                   = -1
+	NETDB_SUCCESS                    = 0
+	NI_DGRAM                         = 16
+	NI_MAXHOST                       = 1025
+	NI_MAXSERV                       = 32
+	NI_NAMEREQD                      = 8
+	NI_NOFQDN                        = 4
+	NI_NUMERICHOST                   = 1
+	NI_NUMERICSERV                   = 2
+	NO_ADDRESS                       = 4
+	NO_DATA                          = 4
+	NO_RECOVERY                      = 3
+	PDP_ENDIAN                       = 3412
+	PF_ALG                           = 38
+	PF_APPLETALK                     = 5
+	PF_ASH                           = 18
+	PF_ATMPVC                        = 8
+	PF_ATMSVC                        = 20
+	PF_AX25                          = 3
+	PF_BLUETOOTH                     = 31
+	PF_BRIDGE                        = 7
+	PF_CAIF                          = 37
+	PF_CAN                           = 29
+	PF_DECnet                        = 12
+	PF_ECONET                        = 19
+	PF_FILE                          = 1
+	PF_IB                            = 27
+	PF_IEEE802154                    = 36
+	PF_INET                          = 2
+	PF_INET6                         = 10
+	PF_IPX                           = 4
+	PF_IRDA                          = 23
+	PF_ISDN                          = 34
+	PF_IUCV                          = 32
+	PF_KCM                           = 41
+	PF_KEY                           = 15
+	PF_LLC                           = 26
+	PF_LOCAL                         = 1
+	PF_MAX                           = 45
+	PF_MPLS                          = 28
+	PF_NETBEUI                       = 13
+	PF_NETLINK                       = 16
+	PF_NETROM                        = 6
+	PF_NFC                           = 39
+	PF_PACKET                        = 17
+	PF_PHONET                        = 35
+	PF_PPPOX                         = 24
+	PF_QIPCRTR                       = 42
+	PF_RDS                           = 21
+	PF_ROSE                          = 11
+	PF_ROUTE                         = 16
+	PF_RXRPC                         = 33
+	PF_SECURITY                      = 14
+	PF_SMC                           = 43
+	PF_SNA                           = 22
+	PF_TIPC                          = 30
+	PF_UNIX                          = 1
+	PF_UNSPEC                        = 0
+	PF_VSOCK                         = 40
+	PF_WANPIPE                       = 25
+	PF_X25                           = 9
+	PF_XDP                           = 44
+	SCM_TIMESTAMP                    = 29
+	SCM_TIMESTAMPING                 = 37
+	SCM_TIMESTAMPING_OPT_STATS       = 54
+	SCM_TIMESTAMPING_PKTINFO         = 58
+	SCM_TIMESTAMPNS                  = 35
+	SCM_TXTIME                       = 61
+	SCM_WIFI_STATUS                  = 41
+	SIOCATMARK                       = 0x8905
+	SIOCGPGRP                        = 0x8904
+	SIOCGSTAMPNS_OLD                 = 0x8907
+	SIOCGSTAMP_OLD                   = 0x8906
+	SIOCSPGRP                        = 0x8902
+	SOL_AAL                          = 265
+	SOL_ALG                          = 279
+	SOL_ATM                          = 264
+	SOL_BLUETOOTH                    = 274
+	SOL_CAIF                         = 278
+	SOL_DCCP                         = 269
+	SOL_DECNET                       = 261
+	SOL_ICMPV6                       = 58
+	SOL_IP                           = 0
+	SOL_IPV6                         = 41
+	SOL_IRDA                         = 266
+	SOL_IUCV                         = 277
+	SOL_KCM                          = 281
+	SOL_LLC                          = 268
+	SOL_NETBEUI                      = 267
+	SOL_NETLINK                      = 270
+	SOL_NFC                          = 280
+	SOL_PACKET                       = 263
+	SOL_PNPIPE                       = 275
+	SOL_PPPOL2TP                     = 273
+	SOL_RAW                          = 255
+	SOL_RDS                          = 276
+	SOL_RXRPC                        = 272
+	SOL_SOCKET                       = 1
+	SOL_TIPC                         = 271
+	SOL_TLS                          = 282
+	SOL_X25                          = 262
+	SOL_XDP                          = 283
+	SOMAXCONN                        = 4096
+	SO_ACCEPTCONN                    = 30
+	SO_ATTACH_BPF                    = 50
+	SO_ATTACH_FILTER                 = 26
+	SO_ATTACH_REUSEPORT_CBPF         = 51
+	SO_ATTACH_REUSEPORT_EBPF         = 52
+	SO_BINDTODEVICE                  = 25
+	SO_BINDTOIFINDEX                 = 62
+	SO_BPF_EXTENSIONS                = 48
+	SO_BROADCAST                     = 6
+	SO_BSDCOMPAT                     = 14
+	SO_BUSY_POLL                     = 46
+	SO_BUSY_POLL_BUDGET              = 70
+	SO_CNX_ADVICE                    = 53
+	SO_COOKIE                        = 57
+	SO_DEBUG                         = 1
+	SO_DETACH_BPF                    = 27
+	SO_DETACH_FILTER                 = 27
+	SO_DETACH_REUSEPORT_BPF          = 68
+	SO_DOMAIN                        = 39
+	SO_DONTROUTE                     = 5
+	SO_ERROR                         = 4
+	SO_GET_FILTER                    = 26
+	SO_INCOMING_CPU                  = 49
+	SO_INCOMING_NAPI_ID              = 56
+	SO_KEEPALIVE                     = 9
+	SO_LINGER                        = 13
+	SO_LOCK_FILTER                   = 44
+	SO_MARK                          = 36
+	SO_MAX_PACING_RATE               = 47
+	SO_MEMINFO                       = 55
+	SO_NETNS_COOKIE                  = 71
+	SO_NOFCS                         = 43
+	SO_NO_CHECK                      = 11
+	SO_OOBINLINE                     = 10
+	SO_PASSCRED                      = 16
+	SO_PASSSEC                       = 34
+	SO_PEEK_OFF                      = 42
+	SO_PEERCRED                      = 17
+	SO_PEERGROUPS                    = 59
+	SO_PEERNAME                      = 28
+	SO_PEERSEC                       = 31
+	SO_PREFER_BUSY_POLL              = 69
+	SO_PRIORITY                      = 12
+	SO_PROTOCOL                      = 38
+	SO_RCVBUF                        = 8
+	SO_RCVBUFFORCE                   = 33
+	SO_RCVLOWAT                      = 18
+	SO_RCVTIMEO                      = 20
+	SO_RCVTIMEO_NEW                  = 66
+	SO_RCVTIMEO_OLD                  = 20
+	SO_REUSEADDR                     = 2
+	SO_REUSEPORT                     = 15
+	SO_RXQ_OVFL                      = 40
+	SO_SECURITY_AUTHENTICATION       = 22
+	SO_SECURITY_ENCRYPTION_NETWORK   = 24
+	SO_SECURITY_ENCRYPTION_TRANSPORT = 23
+	SO_SELECT_ERR_QUEUE              = 45
+	SO_SNDBUF                        = 7
+	SO_SNDBUFFORCE                   = 32
+	SO_SNDLOWAT                      = 19
+	SO_SNDTIMEO                      = 21
+	SO_SNDTIMEO_NEW                  = 67
+	SO_SNDTIMEO_OLD                  = 21
+	SO_TIMESTAMP                     = 29
+	SO_TIMESTAMPING                  = 37
+	SO_TIMESTAMPING_NEW              = 65
+	SO_TIMESTAMPING_OLD              = 37
+	SO_TIMESTAMPNS                   = 35
+	SO_TIMESTAMPNS_NEW               = 64
+	SO_TIMESTAMPNS_OLD               = 35
+	SO_TIMESTAMP_NEW                 = 63
+	SO_TIMESTAMP_OLD                 = 29
+	SO_TXTIME                        = 61
+	SO_TYPE                          = 3
+	SO_WIFI_STATUS                   = 41
+	SO_ZEROCOPY                      = 60
+	TRY_AGAIN                        = 2
+	X_ASM_RISCV_BITSPERLONG_H        = 0
+	X_ATFILE_SOURCE                  = 1
+	X_BITS_BYTESWAP_H                = 1
+	X_BITS_ENDIANNESS_H              = 1
+	X_BITS_ENDIAN_H                  = 1
+	X_BITS_PTHREADTYPES_ARCH_H       = 1
+	X_BITS_PTHREADTYPES_COMMON_H     = 1
+	X_BITS_SOCKADDR_H                = 1
+	X_BITS_STDINT_INTN_H             = 1
+	X_BITS_STDINT_UINTN_H            = 1
+	X_BITS_TIME64_H                  = 1
+	X_BITS_TYPESIZES_H               = 1
+	X_BITS_TYPES_H                   = 1
+	X_BITS_UINTN_IDENTITY_H          = 1
+	X_BSD_SIZE_T_                    = 0
+	X_BSD_SIZE_T_DEFINED_            = 0
+	X_DEFAULT_SOURCE                 = 1
+	X_ENDIAN_H                       = 1
+	X_FEATURES_H                     = 1
+	X_FILE_OFFSET_BITS               = 64
+	X_GCC_SIZE_T                     = 0
+	X_LINUX_POSIX_TYPES_H            = 0
+	X_LP64                           = 1
+	X_NETDB_H                        = 1
+	X_NETINET_IN_H                   = 1
+	X_PATH_HEQUIV                    = "/etc/hosts.equiv"
+	X_PATH_HOSTS                     = "/etc/hosts"
+	X_PATH_NETWORKS                  = "/etc/networks"
+	X_PATH_NSSWITCH_CONF             = "/etc/nsswitch.conf"
+	X_PATH_PROTOCOLS                 = "/etc/protocols"
+	X_PATH_SERVICES                  = "/etc/services"
+	X_POSIX_C_SOURCE                 = 200809
+	X_POSIX_SOURCE                   = 1
+	X_RPC_NETDB_H                    = 1
+	X_RWLOCK_INTERNAL_H              = 0
+	X_SIZET_                         = 0
+	X_SIZE_T                         = 0
+	X_SIZE_T_                        = 0
+	X_SIZE_T_DECLARED                = 0
+	X_SIZE_T_DEFINED                 = 0
+	X_SIZE_T_DEFINED_                = 0
+	X_SS_SIZE                        = 128
+	X_STDC_PREDEF_H                  = 1
+	X_STRUCT_TIMESPEC                = 1
+	X_SYS_CDEFS_H                    = 1
+	X_SYS_SELECT_H                   = 1
+	X_SYS_SIZE_T_H                   = 0
+	X_SYS_SOCKET_H                   = 1
+	X_SYS_TYPES_H                    = 1
+	X_THREAD_MUTEX_INTERNAL_H        = 1
+	X_THREAD_SHARED_TYPES_H          = 1
+	X_T_SIZE                         = 0
+	X_T_SIZE_                        = 0
+	Linux                            = 1
+	Unix                             = 1
+)
+
+// If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel
+//    network headers first and we should use those ABI-identical definitions
+//    instead of our own, otherwise 0.
+const ( /* in.h:103:1: */
+	IPPROTO_HOPOPTS  = 0  // IPv6 Hop-by-Hop options.
+	IPPROTO_ROUTING  = 43 // IPv6 routing header.
+	IPPROTO_FRAGMENT = 44 // IPv6 fragmentation header.
+	IPPROTO_ICMPV6   = 58 // ICMPv6.
+	IPPROTO_NONE     = 59 // IPv6 no next header.
+	IPPROTO_DSTOPTS  = 60 // IPv6 destination options.
+	IPPROTO_MH       = 135
+)
+
+// Standard well-known ports.
+const ( /* in.h:126:1: */
+	IPPORT_ECHO       = 7  // Echo service.
+	IPPORT_DISCARD    = 9  // Discard transmissions service.
+	IPPORT_SYSTAT     = 11 // System status service.
+	IPPORT_DAYTIME    = 13 // Time of day service.
+	IPPORT_NETSTAT    = 15 // Network status service.
+	IPPORT_FTP        = 21 // File Transfer Protocol.
+	IPPORT_TELNET     = 23 // Telnet protocol.
+	IPPORT_SMTP       = 25 // Simple Mail Transfer Protocol.
+	IPPORT_TIMESERVER = 37 // Timeserver service.
+	IPPORT_NAMESERVER = 42 // Domain Name Service.
+	IPPORT_WHOIS      = 43 // Internet Whois service.
+	IPPORT_MTP        = 57
+
+	IPPORT_TFTP    = 69 // Trivial File Transfer Protocol.
+	IPPORT_RJE     = 77
+	IPPORT_FINGER  = 79 // Finger service.
+	IPPORT_TTYLINK = 87
+	IPPORT_SUPDUP  = 95 // SUPDUP protocol.
+
+	IPPORT_EXECSERVER  = 512 // execd service.
+	IPPORT_LOGINSERVER = 513 // rlogind service.
+	IPPORT_CMDSERVER   = 514
+	IPPORT_EFSSERVER   = 520
+
+	// UDP ports.
+	IPPORT_BIFFUDP     = 512
+	IPPORT_WHOSERVER   = 513
+	IPPORT_ROUTESERVER = 520
+
+	// Ports less than this value are reserved for privileged processes.
+	IPPORT_RESERVED = 1024
+
+	// Ports greater this value are reserved for (non-privileged) servers.
+	IPPORT_USERRESERVED = 5000
+)
+
+// Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
+//    The first word in the comment at the right is the data type used;
+//    "bool" means a boolean value stored in an `int'.
+
+// Advanced API (RFC3542) (1).
+
+// Advanced API (RFC3542) (2).
+
+// RFC5014.
+
+// RFC5082.
+
+// Obsolete synonyms for the above.
+
+// IPV6_MTU_DISCOVER values.
+
+// Socket level values for IPv6.
+
+// Routing header options for IPv6.
+
+// Standard well-defined IP protocols.
+const ( /* in.h:40:1: */
+	IPPROTO_IP       = 0   // Dummy protocol for TCP.
+	IPPROTO_ICMP     = 1   // Internet Control Message Protocol.
+	IPPROTO_IGMP     = 2   // Internet Group Management Protocol.
+	IPPROTO_IPIP     = 4   // IPIP tunnels (older KA9Q tunnels use 94).
+	IPPROTO_TCP      = 6   // Transmission Control Protocol.
+	IPPROTO_EGP      = 8   // Exterior Gateway Protocol.
+	IPPROTO_PUP      = 12  // PUP protocol.
+	IPPROTO_UDP      = 17  // User Datagram Protocol.
+	IPPROTO_IDP      = 22  // XNS IDP protocol.
+	IPPROTO_TP       = 29  // SO Transport Protocol Class 4.
+	IPPROTO_DCCP     = 33  // Datagram Congestion Control Protocol.
+	IPPROTO_IPV6     = 41  // IPv6 header.
+	IPPROTO_RSVP     = 46  // Reservation Protocol.
+	IPPROTO_GRE      = 47  // General Routing Encapsulation.
+	IPPROTO_ESP      = 50  // encapsulating security payload.
+	IPPROTO_AH       = 51  // authentication header.
+	IPPROTO_MTP      = 92  // Multicast Transport Protocol.
+	IPPROTO_BEETPH   = 94  // IP option pseudo header for BEET.
+	IPPROTO_ENCAP    = 98  // Encapsulation Header.
+	IPPROTO_PIM      = 103 // Protocol Independent Multicast.
+	IPPROTO_COMP     = 108 // Compression Header Protocol.
+	IPPROTO_SCTP     = 132 // Stream Control Transmission Protocol.
+	IPPROTO_UDPLITE  = 136 // UDP-Lite protocol.
+	IPPROTO_MPLS     = 137 // MPLS in IP.
+	IPPROTO_ETHERNET = 143 // Ethernet-within-IPv6 Encapsulation.
+	IPPROTO_RAW      = 255 // Raw IP packets.
+	IPPROTO_MPTCP    = 262 // Multipath TCP connection.
+	IPPROTO_MAX      = 263
+)
+
+// Bits in the FLAGS argument to `send', `recv', et al.
+const ( /* socket.h:200:1: */
+	MSG_OOB        = 1  // Process out-of-band data.
+	MSG_PEEK       = 2  // Peek at incoming messages.
+	MSG_DONTROUTE  = 4  // Don't use local routing.
+	MSG_CTRUNC     = 8  // Control data lost before delivery.
+	MSG_PROXY      = 16 // Supply or ask second address.
+	MSG_TRUNC      = 32
+	MSG_DONTWAIT   = 64  // Nonblocking IO.
+	MSG_EOR        = 128 // End of record.
+	MSG_WAITALL    = 256 // Wait for a full request.
+	MSG_FIN        = 512
+	MSG_SYN        = 1024
+	MSG_CONFIRM    = 2048 // Confirm path validity.
+	MSG_RST        = 4096
+	MSG_ERRQUEUE   = 8192      // Fetch message from error queue.
+	MSG_NOSIGNAL   = 16384     // Do not generate SIGPIPE.
+	MSG_MORE       = 32768     // Sender will send more.
+	MSG_WAITFORONE = 65536     // Wait for at least one packet to return.
+	MSG_BATCH      = 262144    // sendmmsg: more messages coming.
+	MSG_ZEROCOPY   = 67108864  // Use user data in kernel path.
+	MSG_FASTOPEN   = 536870912 // Send data in TCP SYN.
+
+	MSG_CMSG_CLOEXEC = 1073741824
+)
+
+// Socket level message types.  This must match the definitions in
+//    <linux/socket.h>.
+const ( /* socket.h:332:1: */
+	SCM_RIGHTS = 1
+)
+
+// Get the architecture-dependent definition of enum __socket_type.
+// Define enum __socket_type for generic Linux.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Types of sockets.
+const ( /* socket_type.h:24:1: */
+	SOCK_STREAM = 1 // Sequenced, reliable, connection-based
+	// 				   byte streams.
+	SOCK_DGRAM = 2 // Connectionless, unreliable datagrams
+	// 				   of fixed maximum length.
+	SOCK_RAW       = 3 // Raw protocol interface.
+	SOCK_RDM       = 4 // Reliably-delivered messages.
+	SOCK_SEQPACKET = 5 // Sequenced, reliable, connection-based,
+	// 				   datagrams of fixed maximum length.
+	SOCK_DCCP   = 6  // Datagram Congestion Control Protocol.
+	SOCK_PACKET = 10 // Linux specific way of getting packets
+	// 				   at the dev level.  For writing rarp and
+	// 				   other similar things on the user level.
+
+	// Flags to be ORed into the type parameter of socket and socketpair and
+	//      used for the flags parameter of paccept.
+
+	SOCK_CLOEXEC = 524288 // Atomically set close-on-exec flag for the
+	// 				   new descriptor(s).
+	SOCK_NONBLOCK = 2048
+)
+
+// The following constants should be used for the second parameter of
+//    `shutdown'.
+const ( /* socket.h:41:1: */
+	SHUT_RD   = 0 // No more receptions.
+	SHUT_WR   = 1 // No more transmissions.
+	SHUT_RDWR = 2
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// All data returned by the network data base library are supplied in
+//    host order and returned in network order (suitable for use in
+//    system calls).
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define uintN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type Uint8_t = X__uint8_t   /* stdint-uintn.h:24:19 */
+type Uint16_t = X__uint16_t /* stdint-uintn.h:25:20 */
+type Uint32_t = X__uint32_t /* stdint-uintn.h:26:20 */
+type Uint64_t = X__uint64_t /* stdint-uintn.h:27:20 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Structure for scatter/gather I/O.
+type Iovec = struct {
+	Fiov_base uintptr
+	Fiov_len  Size_t
+} /* struct_iovec.h:26:1 */
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// This operating system-specific header file defines the SOCK_*, PF_*,
+//    AF_*, MSG_*, SOL_*, and SO_* constants, and the `struct sockaddr',
+//    `struct msghdr', and `struct linger' types.
+// System-specific socket constants and types.  Linux version.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint64  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We don't use `memset' because this would require a prototype and
+//    the array isn't too big.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//    microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int64 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [16]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// Type for length arguments in socket calls.
+type Socklen_t = X__socklen_t /* socket.h:33:21 */
+
+// Protocol families.
+
+// Address families.
+
+// Socket level values.  Others are defined in the appropriate headers.
+//
+//    XXX These definitions also should go into the appropriate headers as
+//    far as they are available.
+
+// Maximum queue length specifiable by listen.
+
+// Get the definition of the macro to define the common sockaddr members.
+// Definition of struct sockaddr_* common members and sizes, generic version.
+//    Copyright (C) 1995-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/socket.h> instead.
+
+// POSIX.1g specifies this type name for the `sa_family' member.
+type Sa_family_t = uint16 /* sockaddr.h:28:28 */
+
+// This macro is used to declare the initial common members
+//    of the data types used for socket addresses, `struct sockaddr',
+//    `struct sockaddr_in', `struct sockaddr_un', etc.
+
+// Size of struct sockaddr_storage.
+
+// Structure describing a generic socket address.
+type Sockaddr = struct {
+	Fsa_family Sa_family_t
+	Fsa_data   [14]uint8
+} /* socket.h:178:1 */
+
+// Structure large enough to hold any socket address (with the historical
+//    exception of AF_UNIX).
+
+type Sockaddr_storage = struct {
+	Fss_family    Sa_family_t
+	F__ss_padding [118]uint8
+	F__ss_align   uint64
+} /* socket.h:191:1 */
+
+// Structure describing messages sent by
+//    `sendmsg' and received by `recvmsg'.
+type Msghdr = struct {
+	Fmsg_name       uintptr
+	Fmsg_namelen    Socklen_t
+	F__ccgo_pad1    [4]byte
+	Fmsg_iov        uintptr
+	Fmsg_iovlen     Size_t
+	Fmsg_control    uintptr
+	Fmsg_controllen Size_t
+	Fmsg_flags      int32
+	F__ccgo_pad2    [4]byte
+} /* socket.h:257:1 */
+
+// Structure used for storage of ancillary data object information.
+type Cmsghdr = struct {
+	F__ccgo_pad1 [0]uint64
+	Fcmsg_len    Size_t
+	Fcmsg_level  int32
+	Fcmsg_type   int32
+} /* socket.h:275:1 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// This allows for 1024 file descriptors: if NR_OPEN is ever grown
+// beyond that you'll have to change this too. But 1024 fd's seem to be
+// enough even for such "real" unices like OSF/1, so hopefully this is
+// one limit that doesn't have to be changed [again].
+//
+// Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
+// <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
+// place for them. Solved by having dummy defines in <sys/time.h>.
+
+// This macro may have been defined in <gnu/types.h>. But we always
+// use the one here.
+
+type X__kernel_fd_set = struct{ Ffds_bits [16]uint64 } /* posix_types.h:27:3 */
+
+// Type of a signal handler.
+type X__kernel_sighandler_t = uintptr /* posix_types.h:30:14 */
+
+// Type of a SYSV IPC key.
+type X__kernel_key_t = int32 /* posix_types.h:33:13 */
+type X__kernel_mqd_t = int32 /* posix_types.h:34:13 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note
+// Copyright (C) 2012 ARM Ltd.
+// Copyright (C) 2015 Regents of the University of California
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// There seems to be no way of detecting this automatically from user
+// space, so 64 bit architectures should override this in their
+// bitsperlong.h. In particular, an architecture that supports
+// both 32 and 64 bit user space must not rely on CONFIG_64BIT
+// to decide it, but rather check a compiler provided macro.
+
+// This file is generally used by user-level software, so you need to
+// be a little careful about namespace pollution etc.
+//
+// First the types that are often defined in different ways across
+// architectures, so that you can override them.
+
+type X__kernel_long_t = int64   /* posix_types.h:15:15 */
+type X__kernel_ulong_t = uint64 /* posix_types.h:16:23 */
+
+type X__kernel_ino_t = X__kernel_ulong_t /* posix_types.h:20:26 */
+
+type X__kernel_mode_t = uint32 /* posix_types.h:24:22 */
+
+type X__kernel_pid_t = int32 /* posix_types.h:28:14 */
+
+type X__kernel_ipc_pid_t = int32 /* posix_types.h:32:14 */
+
+type X__kernel_uid_t = uint32 /* posix_types.h:36:22 */
+type X__kernel_gid_t = uint32 /* posix_types.h:37:22 */
+
+type X__kernel_suseconds_t = X__kernel_long_t /* posix_types.h:41:26 */
+
+type X__kernel_daddr_t = int32 /* posix_types.h:45:14 */
+
+type X__kernel_uid32_t = uint32 /* posix_types.h:49:22 */
+type X__kernel_gid32_t = uint32 /* posix_types.h:50:22 */
+
+type X__kernel_old_uid_t = X__kernel_uid_t /* posix_types.h:54:24 */
+type X__kernel_old_gid_t = X__kernel_gid_t /* posix_types.h:55:24 */
+
+type X__kernel_old_dev_t = uint32 /* posix_types.h:59:22 */
+
+// Most 32 bit architectures use "unsigned int" size_t,
+// and all 64 bit architectures use "unsigned long" size_t.
+type X__kernel_size_t = X__kernel_ulong_t   /* posix_types.h:72:26 */
+type X__kernel_ssize_t = X__kernel_long_t   /* posix_types.h:73:25 */
+type X__kernel_ptrdiff_t = X__kernel_long_t /* posix_types.h:74:25 */
+
+type X__kernel_fsid_t = struct{ Fval [2]int32 } /* posix_types.h:81:3 */
+
+// anything below here should be completely generic
+type X__kernel_off_t = X__kernel_long_t      /* posix_types.h:87:25 */
+type X__kernel_loff_t = int64                /* posix_types.h:88:19 */
+type X__kernel_old_time_t = X__kernel_long_t /* posix_types.h:89:25 */
+type X__kernel_time_t = X__kernel_long_t     /* posix_types.h:90:25 */
+type X__kernel_time64_t = int64              /* posix_types.h:91:19 */
+type X__kernel_clock_t = X__kernel_long_t    /* posix_types.h:92:25 */
+type X__kernel_timer_t = int32               /* posix_types.h:93:14 */
+type X__kernel_clockid_t = int32             /* posix_types.h:94:14 */
+type X__kernel_caddr_t = uintptr             /* posix_types.h:95:14 */
+type X__kernel_uid16_t = uint16              /* posix_types.h:96:24 */
+type X__kernel_gid16_t = uint16              /* posix_types.h:97:24 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// Socket-level I/O control calls.
+
+// For setsockopt(2)
+
+// Security levels - as per NRL IPv6 - don't actually do anything
+
+// Socket filtering
+
+// Instruct lower device to use last 4-bytes of skb data as FCS
+
+// on 64-bit and x32, avoid the ?: operator
+
+// Structure used to manipulate the SO_LINGER option.
+type Linger = struct {
+	Fl_onoff  int32
+	Fl_linger int32
+} /* socket.h:361:1 */
+
+// This is the 4.3 BSD `struct sockaddr' format, which is used as wire
+//    format in the grotty old 4.3 `talk' protocol.
+type Osockaddr = struct {
+	Fsa_family uint16
+	Fsa_data   [14]uint8
+} /* struct_osockaddr.h:6:1 */
+
+// Define some macros helping to catch buffer overflows.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Internet address.
+type In_addr_t = Uint32_t                  /* in.h:30:18 */
+type In_addr = struct{ Fs_addr In_addr_t } /* in.h:31:1 */
+
+// Get system-specific definitions.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Linux version.
+
+// If the application has already included linux/in6.h from a linux-based
+//    kernel then we will not define the IPv6 IPPROTO_* defines, in6_addr (nor the
+//    defines), sockaddr_in6, or ipv6_mreq. Same for in6_ptkinfo or ip6_mtuinfo
+//    in linux/ipv6.h. The ABI used by the linux-kernel and glibc match exactly.
+//    Neither the linux kernel nor glibc should break this ABI without coordination.
+//    In upstream kernel 56c176c9 the _UAPI prefix was stripped so we need to check
+//    for _LINUX_IN6_H and _IPV6_H now, and keep checking the old versions for
+//    maximum backwards compatibility.
+
+// Options for use with `getsockopt' and `setsockopt' at the IP level.
+//    The first word in the comment at the right is the data type used;
+//    "bool" means a boolean value stored in an `int'.
+// For BSD compatibility.
+
+// TProxy original addresses
+
+// IP_MTU_DISCOVER arguments.
+// Always use interface mtu (ignores dst pmtu) but don't set DF flag.
+//    Also incoming ICMP frag_needed notifications will be ignored on
+//    this socket to prevent accepting spoofed ones.
+// Like IP_PMTUDISC_INTERFACE but allow packets to be fragmented.
+
+// To select the IP level.
+
+// Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
+//    The `ip_dst' field is used for the first-hop gateway when using a
+//    source route (this gets put into the header proper).
+type Ip_opts = struct {
+	Fip_dst  struct{ Fs_addr In_addr_t }
+	Fip_opts [40]uint8
+} /* in.h:143:1 */
+
+// Like `struct ip_mreq' but including interface specification by index.
+type Ip_mreqn = struct {
+	Fimr_multiaddr struct{ Fs_addr In_addr_t }
+	Fimr_address   struct{ Fs_addr In_addr_t }
+	Fimr_ifindex   int32
+} /* in.h:150:1 */
+
+// Structure used for IP_PKTINFO.
+type In_pktinfo = struct {
+	Fipi_ifindex  int32
+	Fipi_spec_dst struct{ Fs_addr In_addr_t }
+	Fipi_addr     struct{ Fs_addr In_addr_t }
+} /* in.h:158:1 */
+
+// Type to represent a port.
+type In_port_t = Uint16_t /* in.h:123:18 */
+
+// Definitions of the bits in an Internet address integer.
+//
+//    On subnets, host and network parts are found according to
+//    the subnet mask, not these masks.
+
+// Address to accept any incoming messages.
+// Address to send to all hosts.
+// Address indicating an error return.
+
+// Network number for local host loopback.
+// Address to loopback in software to local host.
+
+// Defines for Multicast INADDR.
+
+// IPv6 address
+type In6_addr = struct {
+	F__in6_u struct {
+		F__ccgo_pad1 [0]uint32
+		F__u6_addr8  [16]Uint8_t
+	}
+} /* in.h:216:1 */
+
+// ::1
+
+// Structure describing an Internet socket address.
+type Sockaddr_in = struct {
+	Fsin_family Sa_family_t
+	Fsin_port   In_port_t
+	Fsin_addr   struct{ Fs_addr In_addr_t }
+	Fsin_zero   [8]uint8
+} /* in.h:242:1 */
+
+// Ditto, for IPv6.
+type Sockaddr_in6 = struct {
+	Fsin6_family   Sa_family_t
+	Fsin6_port     In_port_t
+	Fsin6_flowinfo Uint32_t
+	Fsin6_addr     struct {
+		F__in6_u struct {
+			F__ccgo_pad1 [0]uint32
+			F__u6_addr8  [16]Uint8_t
+		}
+	}
+	Fsin6_scope_id Uint32_t
+} /* in.h:257:1 */
+
+// IPv4 multicast request.
+type Ip_mreq = struct {
+	Fimr_multiaddr struct{ Fs_addr In_addr_t }
+	Fimr_interface struct{ Fs_addr In_addr_t }
+} /* in.h:269:1 */
+
+type Ip_mreq_source = struct {
+	Fimr_multiaddr  struct{ Fs_addr In_addr_t }
+	Fimr_interface  struct{ Fs_addr In_addr_t }
+	Fimr_sourceaddr struct{ Fs_addr In_addr_t }
+} /* in.h:278:1 */
+
+// Likewise, for IPv6.
+type Ipv6_mreq = struct {
+	Fipv6mr_multiaddr struct {
+		F__in6_u struct {
+			F__ccgo_pad1 [0]uint32
+			F__u6_addr8  [16]Uint8_t
+		}
+	}
+	Fipv6mr_interface uint32
+} /* in.h:293:1 */
+
+// Multicast group request.
+type Group_req = struct {
+	Fgr_interface Uint32_t
+	F__ccgo_pad1  [4]byte
+	Fgr_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+} /* in.h:305:1 */
+
+type Group_source_req = struct {
+	Fgsr_interface Uint32_t
+	F__ccgo_pad1   [4]byte
+	Fgsr_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+	Fgsr_source struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+} /* in.h:314:1 */
+
+// Full-state filter operations.
+type Ip_msfilter = struct {
+	Fimsf_multiaddr struct{ Fs_addr In_addr_t }
+	Fimsf_interface struct{ Fs_addr In_addr_t }
+	Fimsf_fmode     Uint32_t
+	Fimsf_numsrc    Uint32_t
+	Fimsf_slist     [1]struct{ Fs_addr In_addr_t }
+} /* in.h:328:1 */
+
+type Group_filter = struct {
+	Fgf_interface Uint32_t
+	F__ccgo_pad1  [4]byte
+	Fgf_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+	Fgf_fmode  Uint32_t
+	Fgf_numsrc Uint32_t
+	Fgf_slist  [1]struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+} /* in.h:349:1 */
+
+// Define uintN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This is necessary to make this include file properly replace the
+//    Sun version.
+// @(#)netdb.h	2.1 88/07/29 3.9 RPCSRC
+// Copyright (c) 2010, Oracle America, Inc.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials
+//       provided with the distribution.
+//     * Neither the name of the "Oracle America, Inc." nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+//   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+//   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+//   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+//   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+//   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+//   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+//   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+//   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+//   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+//   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+//   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+//   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Cleaned up for GNU C library roland@gnu.ai.mit.edu:
+//    added multiple inclusion protection and use of <sys/cdefs.h>.
+//    In GNU this file is #include'd by <netdb.h>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+type Rpcent = struct {
+	Fr_name      uintptr
+	Fr_aliases   uintptr
+	Fr_number    int32
+	F__ccgo_pad1 [4]byte
+} /* netdb.h:46:1 */
+
+// Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Description of data base entry for a single network.  NOTE: here a
+//    poor assumption is made.  The network number is expected to fit
+//    into an unsigned long int variable.
+type Netent = struct {
+	Fn_name     uintptr
+	Fn_aliases  uintptr
+	Fn_addrtype int32
+	Fn_net      Uint32_t
+} /* netdb.h:26:1 */
+
+// Description of data base entry for a single host.
+type Hostent = struct {
+	Fh_name      uintptr
+	Fh_aliases   uintptr
+	Fh_addrtype  int32
+	Fh_length    int32
+	Fh_addr_list uintptr
+} /* netdb.h:98:1 */
+
+// Description of data base entry for a single service.
+type Servent = struct {
+	Fs_name      uintptr
+	Fs_aliases   uintptr
+	Fs_port      int32
+	F__ccgo_pad1 [4]byte
+	Fs_proto     uintptr
+} /* netdb.h:255:1 */
+
+// Description of data base entry for a single service.
+type Protoent = struct {
+	Fp_name      uintptr
+	Fp_aliases   uintptr
+	Fp_proto     int32
+	F__ccgo_pad1 [4]byte
+} /* netdb.h:324:1 */
+
+// Extension from POSIX.1:2001.
+// Structure to contain information about address of a service provider.
+type Addrinfo = struct {
+	Fai_flags     int32
+	Fai_family    int32
+	Fai_socktype  int32
+	Fai_protocol  int32
+	Fai_addrlen   Socklen_t
+	F__ccgo_pad1  [4]byte
+	Fai_addr      uintptr
+	Fai_canonname uintptr
+	Fai_next      uintptr
+} /* netdb.h:565:1 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/netinet/in/capi_linux_riscv64.go b/vendor/modernc.org/libc/netinet/in/capi_linux_riscv64.go
new file mode 100644
index 00000000..3302f699
--- /dev/null
+++ b/vendor/modernc.org/libc/netinet/in/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo netinet/in/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o netinet/in/in_linux_riscv64.go -pkgname in', DO NOT EDIT.
+
+package in
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/netinet/in/in_linux_riscv64.go b/vendor/modernc.org/libc/netinet/in/in_linux_riscv64.go
new file mode 100644
index 00000000..96c3ccf1
--- /dev/null
+++ b/vendor/modernc.org/libc/netinet/in/in_linux_riscv64.go
@@ -0,0 +1,2990 @@
+// Code generated by 'ccgo netinet/in/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o netinet/in/in_linux_riscv64.go -pkgname in', DO NOT EDIT.
+
+package in
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	AF_ALG                           = 38
+	AF_APPLETALK                     = 5
+	AF_ASH                           = 18
+	AF_ATMPVC                        = 8
+	AF_ATMSVC                        = 20
+	AF_AX25                          = 3
+	AF_BLUETOOTH                     = 31
+	AF_BRIDGE                        = 7
+	AF_CAIF                          = 37
+	AF_CAN                           = 29
+	AF_DECnet                        = 12
+	AF_ECONET                        = 19
+	AF_FILE                          = 1
+	AF_IB                            = 27
+	AF_IEEE802154                    = 36
+	AF_INET                          = 2
+	AF_INET6                         = 10
+	AF_IPX                           = 4
+	AF_IRDA                          = 23
+	AF_ISDN                          = 34
+	AF_IUCV                          = 32
+	AF_KCM                           = 41
+	AF_KEY                           = 15
+	AF_LLC                           = 26
+	AF_LOCAL                         = 1
+	AF_MAX                           = 45
+	AF_MPLS                          = 28
+	AF_NETBEUI                       = 13
+	AF_NETLINK                       = 16
+	AF_NETROM                        = 6
+	AF_NFC                           = 39
+	AF_PACKET                        = 17
+	AF_PHONET                        = 35
+	AF_PPPOX                         = 24
+	AF_QIPCRTR                       = 42
+	AF_RDS                           = 21
+	AF_ROSE                          = 11
+	AF_ROUTE                         = 16
+	AF_RXRPC                         = 33
+	AF_SECURITY                      = 14
+	AF_SMC                           = 43
+	AF_SNA                           = 22
+	AF_TIPC                          = 30
+	AF_UNIX                          = 1
+	AF_UNSPEC                        = 0
+	AF_VSOCK                         = 40
+	AF_WANPIPE                       = 25
+	AF_X25                           = 9
+	AF_XDP                           = 44
+	BIG_ENDIAN                       = 4321
+	BYTE_ORDER                       = 1234
+	FD_SETSIZE                       = 1024
+	FIOGETOWN                        = 0x8903
+	FIOSETOWN                        = 0x8901
+	INET6_ADDRSTRLEN                 = 46
+	INET_ADDRSTRLEN                  = 16
+	IN_CLASSA_HOST                   = 16777215
+	IN_CLASSA_MAX                    = 128
+	IN_CLASSA_NET                    = 0xff000000
+	IN_CLASSA_NSHIFT                 = 24
+	IN_CLASSB_HOST                   = 65535
+	IN_CLASSB_MAX                    = 65536
+	IN_CLASSB_NET                    = 0xffff0000
+	IN_CLASSB_NSHIFT                 = 16
+	IN_CLASSC_HOST                   = 255
+	IN_CLASSC_NET                    = 0xffffff00
+	IN_CLASSC_NSHIFT                 = 8
+	IN_LOOPBACKNET                   = 127
+	IPV6_2292DSTOPTS                 = 4
+	IPV6_2292HOPLIMIT                = 8
+	IPV6_2292HOPOPTS                 = 3
+	IPV6_2292PKTINFO                 = 2
+	IPV6_2292PKTOPTIONS              = 6
+	IPV6_2292RTHDR                   = 5
+	IPV6_ADDRFORM                    = 1
+	IPV6_ADDR_PREFERENCES            = 72
+	IPV6_ADD_MEMBERSHIP              = 20
+	IPV6_AUTHHDR                     = 10
+	IPV6_AUTOFLOWLABEL               = 70
+	IPV6_CHECKSUM                    = 7
+	IPV6_DONTFRAG                    = 62
+	IPV6_DROP_MEMBERSHIP             = 21
+	IPV6_DSTOPTS                     = 59
+	IPV6_FREEBIND                    = 78
+	IPV6_HDRINCL                     = 36
+	IPV6_HOPLIMIT                    = 52
+	IPV6_HOPOPTS                     = 54
+	IPV6_IPSEC_POLICY                = 34
+	IPV6_JOIN_ANYCAST                = 27
+	IPV6_JOIN_GROUP                  = 20
+	IPV6_LEAVE_ANYCAST               = 28
+	IPV6_LEAVE_GROUP                 = 21
+	IPV6_MINHOPCOUNT                 = 73
+	IPV6_MTU                         = 24
+	IPV6_MTU_DISCOVER                = 23
+	IPV6_MULTICAST_ALL               = 29
+	IPV6_MULTICAST_HOPS              = 18
+	IPV6_MULTICAST_IF                = 17
+	IPV6_MULTICAST_LOOP              = 19
+	IPV6_NEXTHOP                     = 9
+	IPV6_ORIGDSTADDR                 = 74
+	IPV6_PATHMTU                     = 61
+	IPV6_PKTINFO                     = 50
+	IPV6_PMTUDISC_DO                 = 2
+	IPV6_PMTUDISC_DONT               = 0
+	IPV6_PMTUDISC_INTERFACE          = 4
+	IPV6_PMTUDISC_OMIT               = 5
+	IPV6_PMTUDISC_PROBE              = 3
+	IPV6_PMTUDISC_WANT               = 1
+	IPV6_RECVDSTOPTS                 = 58
+	IPV6_RECVERR                     = 25
+	IPV6_RECVERR_RFC4884             = 31
+	IPV6_RECVFRAGSIZE                = 77
+	IPV6_RECVHOPLIMIT                = 51
+	IPV6_RECVHOPOPTS                 = 53
+	IPV6_RECVORIGDSTADDR             = 74
+	IPV6_RECVPATHMTU                 = 60
+	IPV6_RECVPKTINFO                 = 49
+	IPV6_RECVRTHDR                   = 56
+	IPV6_RECVTCLASS                  = 66
+	IPV6_ROUTER_ALERT                = 22
+	IPV6_ROUTER_ALERT_ISOLATE        = 30
+	IPV6_RTHDR                       = 57
+	IPV6_RTHDRDSTOPTS                = 55
+	IPV6_RTHDR_LOOSE                 = 0
+	IPV6_RTHDR_STRICT                = 1
+	IPV6_RTHDR_TYPE_0                = 0
+	IPV6_RXDSTOPTS                   = 59
+	IPV6_RXHOPOPTS                   = 54
+	IPV6_TCLASS                      = 67
+	IPV6_TRANSPARENT                 = 75
+	IPV6_UNICAST_HOPS                = 16
+	IPV6_UNICAST_IF                  = 76
+	IPV6_V6ONLY                      = 26
+	IPV6_XFRM_POLICY                 = 35
+	IP_ADD_MEMBERSHIP                = 35
+	IP_ADD_SOURCE_MEMBERSHIP         = 39
+	IP_BIND_ADDRESS_NO_PORT          = 24
+	IP_BLOCK_SOURCE                  = 38
+	IP_CHECKSUM                      = 23
+	IP_DEFAULT_MULTICAST_LOOP        = 1
+	IP_DEFAULT_MULTICAST_TTL         = 1
+	IP_DROP_MEMBERSHIP               = 36
+	IP_DROP_SOURCE_MEMBERSHIP        = 40
+	IP_FREEBIND                      = 15
+	IP_HDRINCL                       = 3
+	IP_IPSEC_POLICY                  = 16
+	IP_MAX_MEMBERSHIPS               = 20
+	IP_MINTTL                        = 21
+	IP_MSFILTER                      = 41
+	IP_MTU                           = 14
+	IP_MTU_DISCOVER                  = 10
+	IP_MULTICAST_ALL                 = 49
+	IP_MULTICAST_IF                  = 32
+	IP_MULTICAST_LOOP                = 34
+	IP_MULTICAST_TTL                 = 33
+	IP_NODEFRAG                      = 22
+	IP_OPTIONS                       = 4
+	IP_ORIGDSTADDR                   = 20
+	IP_PASSSEC                       = 18
+	IP_PKTINFO                       = 8
+	IP_PKTOPTIONS                    = 9
+	IP_PMTUDISC                      = 10
+	IP_PMTUDISC_DO                   = 2
+	IP_PMTUDISC_DONT                 = 0
+	IP_PMTUDISC_INTERFACE            = 4
+	IP_PMTUDISC_OMIT                 = 5
+	IP_PMTUDISC_PROBE                = 3
+	IP_PMTUDISC_WANT                 = 1
+	IP_RECVERR                       = 11
+	IP_RECVERR_RFC4884               = 26
+	IP_RECVFRAGSIZE                  = 25
+	IP_RECVOPTS                      = 6
+	IP_RECVORIGDSTADDR               = 20
+	IP_RECVRETOPTS                   = 7
+	IP_RECVTOS                       = 13
+	IP_RECVTTL                       = 12
+	IP_RETOPTS                       = 7
+	IP_ROUTER_ALERT                  = 5
+	IP_TOS                           = 1
+	IP_TRANSPARENT                   = 19
+	IP_TTL                           = 2
+	IP_UNBLOCK_SOURCE                = 37
+	IP_UNICAST_IF                    = 50
+	IP_XFRM_POLICY                   = 17
+	LITTLE_ENDIAN                    = 1234
+	MCAST_BLOCK_SOURCE               = 43
+	MCAST_EXCLUDE                    = 0
+	MCAST_INCLUDE                    = 1
+	MCAST_JOIN_GROUP                 = 42
+	MCAST_JOIN_SOURCE_GROUP          = 46
+	MCAST_LEAVE_GROUP                = 45
+	MCAST_LEAVE_SOURCE_GROUP         = 47
+	MCAST_MSFILTER                   = 48
+	MCAST_UNBLOCK_SOURCE             = 44
+	PDP_ENDIAN                       = 3412
+	PF_ALG                           = 38
+	PF_APPLETALK                     = 5
+	PF_ASH                           = 18
+	PF_ATMPVC                        = 8
+	PF_ATMSVC                        = 20
+	PF_AX25                          = 3
+	PF_BLUETOOTH                     = 31
+	PF_BRIDGE                        = 7
+	PF_CAIF                          = 37
+	PF_CAN                           = 29
+	PF_DECnet                        = 12
+	PF_ECONET                        = 19
+	PF_FILE                          = 1
+	PF_IB                            = 27
+	PF_IEEE802154                    = 36
+	PF_INET                          = 2
+	PF_INET6                         = 10
+	PF_IPX                           = 4
+	PF_IRDA                          = 23
+	PF_ISDN                          = 34
+	PF_IUCV                          = 32
+	PF_KCM                           = 41
+	PF_KEY                           = 15
+	PF_LLC                           = 26
+	PF_LOCAL                         = 1
+	PF_MAX                           = 45
+	PF_MPLS                          = 28
+	PF_NETBEUI                       = 13
+	PF_NETLINK                       = 16
+	PF_NETROM                        = 6
+	PF_NFC                           = 39
+	PF_PACKET                        = 17
+	PF_PHONET                        = 35
+	PF_PPPOX                         = 24
+	PF_QIPCRTR                       = 42
+	PF_RDS                           = 21
+	PF_ROSE                          = 11
+	PF_ROUTE                         = 16
+	PF_RXRPC                         = 33
+	PF_SECURITY                      = 14
+	PF_SMC                           = 43
+	PF_SNA                           = 22
+	PF_TIPC                          = 30
+	PF_UNIX                          = 1
+	PF_UNSPEC                        = 0
+	PF_VSOCK                         = 40
+	PF_WANPIPE                       = 25
+	PF_X25                           = 9
+	PF_XDP                           = 44
+	SCM_TIMESTAMP                    = 29
+	SCM_TIMESTAMPING                 = 37
+	SCM_TIMESTAMPING_OPT_STATS       = 54
+	SCM_TIMESTAMPING_PKTINFO         = 58
+	SCM_TIMESTAMPNS                  = 35
+	SCM_TXTIME                       = 61
+	SCM_WIFI_STATUS                  = 41
+	SIOCATMARK                       = 0x8905
+	SIOCGPGRP                        = 0x8904
+	SIOCGSTAMPNS_OLD                 = 0x8907
+	SIOCGSTAMP_OLD                   = 0x8906
+	SIOCSPGRP                        = 0x8902
+	SOL_AAL                          = 265
+	SOL_ALG                          = 279
+	SOL_ATM                          = 264
+	SOL_BLUETOOTH                    = 274
+	SOL_CAIF                         = 278
+	SOL_DCCP                         = 269
+	SOL_DECNET                       = 261
+	SOL_ICMPV6                       = 58
+	SOL_IP                           = 0
+	SOL_IPV6                         = 41
+	SOL_IRDA                         = 266
+	SOL_IUCV                         = 277
+	SOL_KCM                          = 281
+	SOL_LLC                          = 268
+	SOL_NETBEUI                      = 267
+	SOL_NETLINK                      = 270
+	SOL_NFC                          = 280
+	SOL_PACKET                       = 263
+	SOL_PNPIPE                       = 275
+	SOL_PPPOL2TP                     = 273
+	SOL_RAW                          = 255
+	SOL_RDS                          = 276
+	SOL_RXRPC                        = 272
+	SOL_SOCKET                       = 1
+	SOL_TIPC                         = 271
+	SOL_TLS                          = 282
+	SOL_X25                          = 262
+	SOL_XDP                          = 283
+	SOMAXCONN                        = 4096
+	SO_ACCEPTCONN                    = 30
+	SO_ATTACH_BPF                    = 50
+	SO_ATTACH_FILTER                 = 26
+	SO_ATTACH_REUSEPORT_CBPF         = 51
+	SO_ATTACH_REUSEPORT_EBPF         = 52
+	SO_BINDTODEVICE                  = 25
+	SO_BINDTOIFINDEX                 = 62
+	SO_BPF_EXTENSIONS                = 48
+	SO_BROADCAST                     = 6
+	SO_BSDCOMPAT                     = 14
+	SO_BUSY_POLL                     = 46
+	SO_BUSY_POLL_BUDGET              = 70
+	SO_CNX_ADVICE                    = 53
+	SO_COOKIE                        = 57
+	SO_DEBUG                         = 1
+	SO_DETACH_BPF                    = 27
+	SO_DETACH_FILTER                 = 27
+	SO_DETACH_REUSEPORT_BPF          = 68
+	SO_DOMAIN                        = 39
+	SO_DONTROUTE                     = 5
+	SO_ERROR                         = 4
+	SO_GET_FILTER                    = 26
+	SO_INCOMING_CPU                  = 49
+	SO_INCOMING_NAPI_ID              = 56
+	SO_KEEPALIVE                     = 9
+	SO_LINGER                        = 13
+	SO_LOCK_FILTER                   = 44
+	SO_MARK                          = 36
+	SO_MAX_PACING_RATE               = 47
+	SO_MEMINFO                       = 55
+	SO_NETNS_COOKIE                  = 71
+	SO_NOFCS                         = 43
+	SO_NO_CHECK                      = 11
+	SO_OOBINLINE                     = 10
+	SO_PASSCRED                      = 16
+	SO_PASSSEC                       = 34
+	SO_PEEK_OFF                      = 42
+	SO_PEERCRED                      = 17
+	SO_PEERGROUPS                    = 59
+	SO_PEERNAME                      = 28
+	SO_PEERSEC                       = 31
+	SO_PREFER_BUSY_POLL              = 69
+	SO_PRIORITY                      = 12
+	SO_PROTOCOL                      = 38
+	SO_RCVBUF                        = 8
+	SO_RCVBUFFORCE                   = 33
+	SO_RCVLOWAT                      = 18
+	SO_RCVTIMEO                      = 20
+	SO_RCVTIMEO_NEW                  = 66
+	SO_RCVTIMEO_OLD                  = 20
+	SO_REUSEADDR                     = 2
+	SO_REUSEPORT                     = 15
+	SO_RXQ_OVFL                      = 40
+	SO_SECURITY_AUTHENTICATION       = 22
+	SO_SECURITY_ENCRYPTION_NETWORK   = 24
+	SO_SECURITY_ENCRYPTION_TRANSPORT = 23
+	SO_SELECT_ERR_QUEUE              = 45
+	SO_SNDBUF                        = 7
+	SO_SNDBUFFORCE                   = 32
+	SO_SNDLOWAT                      = 19
+	SO_SNDTIMEO                      = 21
+	SO_SNDTIMEO_NEW                  = 67
+	SO_SNDTIMEO_OLD                  = 21
+	SO_TIMESTAMP                     = 29
+	SO_TIMESTAMPING                  = 37
+	SO_TIMESTAMPING_NEW              = 65
+	SO_TIMESTAMPING_OLD              = 37
+	SO_TIMESTAMPNS                   = 35
+	SO_TIMESTAMPNS_NEW               = 64
+	SO_TIMESTAMPNS_OLD               = 35
+	SO_TIMESTAMP_NEW                 = 63
+	SO_TIMESTAMP_OLD                 = 29
+	SO_TXTIME                        = 61
+	SO_TYPE                          = 3
+	SO_WIFI_STATUS                   = 41
+	SO_ZEROCOPY                      = 60
+	X_ASM_RISCV_BITSPERLONG_H        = 0
+	X_ATFILE_SOURCE                  = 1
+	X_BITS_BYTESWAP_H                = 1
+	X_BITS_ENDIANNESS_H              = 1
+	X_BITS_ENDIAN_H                  = 1
+	X_BITS_PTHREADTYPES_ARCH_H       = 1
+	X_BITS_PTHREADTYPES_COMMON_H     = 1
+	X_BITS_SOCKADDR_H                = 1
+	X_BITS_STDINT_INTN_H             = 1
+	X_BITS_STDINT_UINTN_H            = 1
+	X_BITS_TIME64_H                  = 1
+	X_BITS_TYPESIZES_H               = 1
+	X_BITS_TYPES_H                   = 1
+	X_BITS_UINTN_IDENTITY_H          = 1
+	X_BSD_SIZE_T_                    = 0
+	X_BSD_SIZE_T_DEFINED_            = 0
+	X_DEFAULT_SOURCE                 = 1
+	X_ENDIAN_H                       = 1
+	X_FEATURES_H                     = 1
+	X_FILE_OFFSET_BITS               = 64
+	X_GCC_SIZE_T                     = 0
+	X_LINUX_POSIX_TYPES_H            = 0
+	X_LP64                           = 1
+	X_NETINET_IN_H                   = 1
+	X_POSIX_C_SOURCE                 = 200809
+	X_POSIX_SOURCE                   = 1
+	X_RWLOCK_INTERNAL_H              = 0
+	X_SIZET_                         = 0
+	X_SIZE_T                         = 0
+	X_SIZE_T_                        = 0
+	X_SIZE_T_DECLARED                = 0
+	X_SIZE_T_DEFINED                 = 0
+	X_SIZE_T_DEFINED_                = 0
+	X_SS_SIZE                        = 128
+	X_STDC_PREDEF_H                  = 1
+	X_STRUCT_TIMESPEC                = 1
+	X_SYS_CDEFS_H                    = 1
+	X_SYS_SELECT_H                   = 1
+	X_SYS_SIZE_T_H                   = 0
+	X_SYS_SOCKET_H                   = 1
+	X_SYS_TYPES_H                    = 1
+	X_THREAD_MUTEX_INTERNAL_H        = 1
+	X_THREAD_SHARED_TYPES_H          = 1
+	X_T_SIZE                         = 0
+	X_T_SIZE_                        = 0
+	Linux                            = 1
+	Unix                             = 1
+)
+
+// If __USE_KERNEL_IPV6_DEFS is 1 then the user has included the kernel
+//    network headers first and we should use those ABI-identical definitions
+//    instead of our own, otherwise 0.
+const ( /* in.h:103:1: */
+	IPPROTO_HOPOPTS  = 0  // IPv6 Hop-by-Hop options.
+	IPPROTO_ROUTING  = 43 // IPv6 routing header.
+	IPPROTO_FRAGMENT = 44 // IPv6 fragmentation header.
+	IPPROTO_ICMPV6   = 58 // ICMPv6.
+	IPPROTO_NONE     = 59 // IPv6 no next header.
+	IPPROTO_DSTOPTS  = 60 // IPv6 destination options.
+	IPPROTO_MH       = 135
+)
+
+// Standard well-known ports.
+const ( /* in.h:126:1: */
+	IPPORT_ECHO       = 7  // Echo service.
+	IPPORT_DISCARD    = 9  // Discard transmissions service.
+	IPPORT_SYSTAT     = 11 // System status service.
+	IPPORT_DAYTIME    = 13 // Time of day service.
+	IPPORT_NETSTAT    = 15 // Network status service.
+	IPPORT_FTP        = 21 // File Transfer Protocol.
+	IPPORT_TELNET     = 23 // Telnet protocol.
+	IPPORT_SMTP       = 25 // Simple Mail Transfer Protocol.
+	IPPORT_TIMESERVER = 37 // Timeserver service.
+	IPPORT_NAMESERVER = 42 // Domain Name Service.
+	IPPORT_WHOIS      = 43 // Internet Whois service.
+	IPPORT_MTP        = 57
+
+	IPPORT_TFTP    = 69 // Trivial File Transfer Protocol.
+	IPPORT_RJE     = 77
+	IPPORT_FINGER  = 79 // Finger service.
+	IPPORT_TTYLINK = 87
+	IPPORT_SUPDUP  = 95 // SUPDUP protocol.
+
+	IPPORT_EXECSERVER  = 512 // execd service.
+	IPPORT_LOGINSERVER = 513 // rlogind service.
+	IPPORT_CMDSERVER   = 514
+	IPPORT_EFSSERVER   = 520
+
+	// UDP ports.
+	IPPORT_BIFFUDP     = 512
+	IPPORT_WHOSERVER   = 513
+	IPPORT_ROUTESERVER = 520
+
+	// Ports less than this value are reserved for privileged processes.
+	IPPORT_RESERVED = 1024
+
+	// Ports greater this value are reserved for (non-privileged) servers.
+	IPPORT_USERRESERVED = 5000
+)
+
+// Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
+//    The first word in the comment at the right is the data type used;
+//    "bool" means a boolean value stored in an `int'.
+
+// Advanced API (RFC3542) (1).
+
+// Advanced API (RFC3542) (2).
+
+// RFC5014.
+
+// RFC5082.
+
+// Obsolete synonyms for the above.
+
+// IPV6_MTU_DISCOVER values.
+
+// Socket level values for IPv6.
+
+// Routing header options for IPv6.
+
+// Standard well-defined IP protocols.
+const ( /* in.h:40:1: */
+	IPPROTO_IP       = 0   // Dummy protocol for TCP.
+	IPPROTO_ICMP     = 1   // Internet Control Message Protocol.
+	IPPROTO_IGMP     = 2   // Internet Group Management Protocol.
+	IPPROTO_IPIP     = 4   // IPIP tunnels (older KA9Q tunnels use 94).
+	IPPROTO_TCP      = 6   // Transmission Control Protocol.
+	IPPROTO_EGP      = 8   // Exterior Gateway Protocol.
+	IPPROTO_PUP      = 12  // PUP protocol.
+	IPPROTO_UDP      = 17  // User Datagram Protocol.
+	IPPROTO_IDP      = 22  // XNS IDP protocol.
+	IPPROTO_TP       = 29  // SO Transport Protocol Class 4.
+	IPPROTO_DCCP     = 33  // Datagram Congestion Control Protocol.
+	IPPROTO_IPV6     = 41  // IPv6 header.
+	IPPROTO_RSVP     = 46  // Reservation Protocol.
+	IPPROTO_GRE      = 47  // General Routing Encapsulation.
+	IPPROTO_ESP      = 50  // encapsulating security payload.
+	IPPROTO_AH       = 51  // authentication header.
+	IPPROTO_MTP      = 92  // Multicast Transport Protocol.
+	IPPROTO_BEETPH   = 94  // IP option pseudo header for BEET.
+	IPPROTO_ENCAP    = 98  // Encapsulation Header.
+	IPPROTO_PIM      = 103 // Protocol Independent Multicast.
+	IPPROTO_COMP     = 108 // Compression Header Protocol.
+	IPPROTO_SCTP     = 132 // Stream Control Transmission Protocol.
+	IPPROTO_UDPLITE  = 136 // UDP-Lite protocol.
+	IPPROTO_MPLS     = 137 // MPLS in IP.
+	IPPROTO_ETHERNET = 143 // Ethernet-within-IPv6 Encapsulation.
+	IPPROTO_RAW      = 255 // Raw IP packets.
+	IPPROTO_MPTCP    = 262 // Multipath TCP connection.
+	IPPROTO_MAX      = 263
+)
+
+// Bits in the FLAGS argument to `send', `recv', et al.
+const ( /* socket.h:200:1: */
+	MSG_OOB        = 1  // Process out-of-band data.
+	MSG_PEEK       = 2  // Peek at incoming messages.
+	MSG_DONTROUTE  = 4  // Don't use local routing.
+	MSG_CTRUNC     = 8  // Control data lost before delivery.
+	MSG_PROXY      = 16 // Supply or ask second address.
+	MSG_TRUNC      = 32
+	MSG_DONTWAIT   = 64  // Nonblocking IO.
+	MSG_EOR        = 128 // End of record.
+	MSG_WAITALL    = 256 // Wait for a full request.
+	MSG_FIN        = 512
+	MSG_SYN        = 1024
+	MSG_CONFIRM    = 2048 // Confirm path validity.
+	MSG_RST        = 4096
+	MSG_ERRQUEUE   = 8192      // Fetch message from error queue.
+	MSG_NOSIGNAL   = 16384     // Do not generate SIGPIPE.
+	MSG_MORE       = 32768     // Sender will send more.
+	MSG_WAITFORONE = 65536     // Wait for at least one packet to return.
+	MSG_BATCH      = 262144    // sendmmsg: more messages coming.
+	MSG_ZEROCOPY   = 67108864  // Use user data in kernel path.
+	MSG_FASTOPEN   = 536870912 // Send data in TCP SYN.
+
+	MSG_CMSG_CLOEXEC = 1073741824
+)
+
+// Socket level message types.  This must match the definitions in
+//    <linux/socket.h>.
+const ( /* socket.h:332:1: */
+	SCM_RIGHTS = 1
+)
+
+// Get the architecture-dependent definition of enum __socket_type.
+// Define enum __socket_type for generic Linux.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Types of sockets.
+const ( /* socket_type.h:24:1: */
+	SOCK_STREAM = 1 // Sequenced, reliable, connection-based
+	// 				   byte streams.
+	SOCK_DGRAM = 2 // Connectionless, unreliable datagrams
+	// 				   of fixed maximum length.
+	SOCK_RAW       = 3 // Raw protocol interface.
+	SOCK_RDM       = 4 // Reliably-delivered messages.
+	SOCK_SEQPACKET = 5 // Sequenced, reliable, connection-based,
+	// 				   datagrams of fixed maximum length.
+	SOCK_DCCP   = 6  // Datagram Congestion Control Protocol.
+	SOCK_PACKET = 10 // Linux specific way of getting packets
+	// 				   at the dev level.  For writing rarp and
+	// 				   other similar things on the user level.
+
+	// Flags to be ORed into the type parameter of socket and socketpair and
+	//      used for the flags parameter of paccept.
+
+	SOCK_CLOEXEC = 524288 // Atomically set close-on-exec flag for the
+	// 				   new descriptor(s).
+	SOCK_NONBLOCK = 2048
+)
+
+// The following constants should be used for the second parameter of
+//    `shutdown'.
+const ( /* socket.h:41:1: */
+	SHUT_RD   = 0 // No more receptions.
+	SHUT_WR   = 1 // No more transmissions.
+	SHUT_RDWR = 2
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// Define uintN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type Uint8_t = X__uint8_t   /* stdint-uintn.h:24:19 */
+type Uint16_t = X__uint16_t /* stdint-uintn.h:25:20 */
+type Uint32_t = X__uint32_t /* stdint-uintn.h:26:20 */
+type Uint64_t = X__uint64_t /* stdint-uintn.h:27:20 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Structure for scatter/gather I/O.
+type Iovec = struct {
+	Fiov_base uintptr
+	Fiov_len  Size_t
+} /* struct_iovec.h:26:1 */
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// This operating system-specific header file defines the SOCK_*, PF_*,
+//    AF_*, MSG_*, SOL_*, and SO_* constants, and the `struct sockaddr',
+//    `struct msghdr', and `struct linger' types.
+// System-specific socket constants and types.  Linux version.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint64  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We don't use `memset' because this would require a prototype and
+//    the array isn't too big.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//    microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int64 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [16]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// Type for length arguments in socket calls.
+type Socklen_t = X__socklen_t /* socket.h:33:21 */
+
+// Protocol families.
+
+// Address families.
+
+// Socket level values.  Others are defined in the appropriate headers.
+//
+//    XXX These definitions also should go into the appropriate headers as
+//    far as they are available.
+
+// Maximum queue length specifiable by listen.
+
+// Get the definition of the macro to define the common sockaddr members.
+// Definition of struct sockaddr_* common members and sizes, generic version.
+//    Copyright (C) 1995-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/socket.h> instead.
+
+// POSIX.1g specifies this type name for the `sa_family' member.
+type Sa_family_t = uint16 /* sockaddr.h:28:28 */
+
+// This macro is used to declare the initial common members
+//    of the data types used for socket addresses, `struct sockaddr',
+//    `struct sockaddr_in', `struct sockaddr_un', etc.
+
+// Size of struct sockaddr_storage.
+
+// Structure describing a generic socket address.
+type Sockaddr = struct {
+	Fsa_family Sa_family_t
+	Fsa_data   [14]uint8
+} /* socket.h:178:1 */
+
+// Structure large enough to hold any socket address (with the historical
+//    exception of AF_UNIX).
+
+type Sockaddr_storage = struct {
+	Fss_family    Sa_family_t
+	F__ss_padding [118]uint8
+	F__ss_align   uint64
+} /* socket.h:191:1 */
+
+// Structure describing messages sent by
+//    `sendmsg' and received by `recvmsg'.
+type Msghdr = struct {
+	Fmsg_name       uintptr
+	Fmsg_namelen    Socklen_t
+	F__ccgo_pad1    [4]byte
+	Fmsg_iov        uintptr
+	Fmsg_iovlen     Size_t
+	Fmsg_control    uintptr
+	Fmsg_controllen Size_t
+	Fmsg_flags      int32
+	F__ccgo_pad2    [4]byte
+} /* socket.h:257:1 */
+
+// Structure used for storage of ancillary data object information.
+type Cmsghdr = struct {
+	F__ccgo_pad1 [0]uint64
+	Fcmsg_len    Size_t
+	Fcmsg_level  int32
+	Fcmsg_type   int32
+} /* socket.h:275:1 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// This allows for 1024 file descriptors: if NR_OPEN is ever grown
+// beyond that you'll have to change this too. But 1024 fd's seem to be
+// enough even for such "real" unices like OSF/1, so hopefully this is
+// one limit that doesn't have to be changed [again].
+//
+// Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
+// <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
+// place for them. Solved by having dummy defines in <sys/time.h>.
+
+// This macro may have been defined in <gnu/types.h>. But we always
+// use the one here.
+
+type X__kernel_fd_set = struct{ Ffds_bits [16]uint64 } /* posix_types.h:27:3 */
+
+// Type of a signal handler.
+type X__kernel_sighandler_t = uintptr /* posix_types.h:30:14 */
+
+// Type of a SYSV IPC key.
+type X__kernel_key_t = int32 /* posix_types.h:33:13 */
+type X__kernel_mqd_t = int32 /* posix_types.h:34:13 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note
+// Copyright (C) 2012 ARM Ltd.
+// Copyright (C) 2015 Regents of the University of California
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// There seems to be no way of detecting this automatically from user
+// space, so 64 bit architectures should override this in their
+// bitsperlong.h. In particular, an architecture that supports
+// both 32 and 64 bit user space must not rely on CONFIG_64BIT
+// to decide it, but rather check a compiler provided macro.
+
+// This file is generally used by user-level software, so you need to
+// be a little careful about namespace pollution etc.
+//
+// First the types that are often defined in different ways across
+// architectures, so that you can override them.
+
+type X__kernel_long_t = int64   /* posix_types.h:15:15 */
+type X__kernel_ulong_t = uint64 /* posix_types.h:16:23 */
+
+type X__kernel_ino_t = X__kernel_ulong_t /* posix_types.h:20:26 */
+
+type X__kernel_mode_t = uint32 /* posix_types.h:24:22 */
+
+type X__kernel_pid_t = int32 /* posix_types.h:28:14 */
+
+type X__kernel_ipc_pid_t = int32 /* posix_types.h:32:14 */
+
+type X__kernel_uid_t = uint32 /* posix_types.h:36:22 */
+type X__kernel_gid_t = uint32 /* posix_types.h:37:22 */
+
+type X__kernel_suseconds_t = X__kernel_long_t /* posix_types.h:41:26 */
+
+type X__kernel_daddr_t = int32 /* posix_types.h:45:14 */
+
+type X__kernel_uid32_t = uint32 /* posix_types.h:49:22 */
+type X__kernel_gid32_t = uint32 /* posix_types.h:50:22 */
+
+type X__kernel_old_uid_t = X__kernel_uid_t /* posix_types.h:54:24 */
+type X__kernel_old_gid_t = X__kernel_gid_t /* posix_types.h:55:24 */
+
+type X__kernel_old_dev_t = uint32 /* posix_types.h:59:22 */
+
+// Most 32 bit architectures use "unsigned int" size_t,
+// and all 64 bit architectures use "unsigned long" size_t.
+type X__kernel_size_t = X__kernel_ulong_t   /* posix_types.h:72:26 */
+type X__kernel_ssize_t = X__kernel_long_t   /* posix_types.h:73:25 */
+type X__kernel_ptrdiff_t = X__kernel_long_t /* posix_types.h:74:25 */
+
+type X__kernel_fsid_t = struct{ Fval [2]int32 } /* posix_types.h:81:3 */
+
+// anything below here should be completely generic
+type X__kernel_off_t = X__kernel_long_t      /* posix_types.h:87:25 */
+type X__kernel_loff_t = int64                /* posix_types.h:88:19 */
+type X__kernel_old_time_t = X__kernel_long_t /* posix_types.h:89:25 */
+type X__kernel_time_t = X__kernel_long_t     /* posix_types.h:90:25 */
+type X__kernel_time64_t = int64              /* posix_types.h:91:19 */
+type X__kernel_clock_t = X__kernel_long_t    /* posix_types.h:92:25 */
+type X__kernel_timer_t = int32               /* posix_types.h:93:14 */
+type X__kernel_clockid_t = int32             /* posix_types.h:94:14 */
+type X__kernel_caddr_t = uintptr             /* posix_types.h:95:14 */
+type X__kernel_uid16_t = uint16              /* posix_types.h:96:24 */
+type X__kernel_gid16_t = uint16              /* posix_types.h:97:24 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// Socket-level I/O control calls.
+
+// For setsockopt(2)
+
+// Security levels - as per NRL IPv6 - don't actually do anything
+
+// Socket filtering
+
+// Instruct lower device to use last 4-bytes of skb data as FCS
+
+// on 64-bit and x32, avoid the ?: operator
+
+// Structure used to manipulate the SO_LINGER option.
+type Linger = struct {
+	Fl_onoff  int32
+	Fl_linger int32
+} /* socket.h:361:1 */
+
+// This is the 4.3 BSD `struct sockaddr' format, which is used as wire
+//    format in the grotty old 4.3 `talk' protocol.
+type Osockaddr = struct {
+	Fsa_family uint16
+	Fsa_data   [14]uint8
+} /* struct_osockaddr.h:6:1 */
+
+// Define some macros helping to catch buffer overflows.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Internet address.
+type In_addr_t = Uint32_t                  /* in.h:30:18 */
+type In_addr = struct{ Fs_addr In_addr_t } /* in.h:31:1 */
+
+// Get system-specific definitions.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Linux version.
+
+// If the application has already included linux/in6.h from a linux-based
+//    kernel then we will not define the IPv6 IPPROTO_* defines, in6_addr (nor the
+//    defines), sockaddr_in6, or ipv6_mreq. Same for in6_ptkinfo or ip6_mtuinfo
+//    in linux/ipv6.h. The ABI used by the linux-kernel and glibc match exactly.
+//    Neither the linux kernel nor glibc should break this ABI without coordination.
+//    In upstream kernel 56c176c9 the _UAPI prefix was stripped so we need to check
+//    for _LINUX_IN6_H and _IPV6_H now, and keep checking the old versions for
+//    maximum backwards compatibility.
+
+// Options for use with `getsockopt' and `setsockopt' at the IP level.
+//    The first word in the comment at the right is the data type used;
+//    "bool" means a boolean value stored in an `int'.
+// For BSD compatibility.
+
+// TProxy original addresses
+
+// IP_MTU_DISCOVER arguments.
+// Always use interface mtu (ignores dst pmtu) but don't set DF flag.
+//    Also incoming ICMP frag_needed notifications will be ignored on
+//    this socket to prevent accepting spoofed ones.
+// Like IP_PMTUDISC_INTERFACE but allow packets to be fragmented.
+
+// To select the IP level.
+
+// Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
+//    The `ip_dst' field is used for the first-hop gateway when using a
+//    source route (this gets put into the header proper).
+type Ip_opts = struct {
+	Fip_dst  struct{ Fs_addr In_addr_t }
+	Fip_opts [40]uint8
+} /* in.h:143:1 */
+
+// Like `struct ip_mreq' but including interface specification by index.
+type Ip_mreqn = struct {
+	Fimr_multiaddr struct{ Fs_addr In_addr_t }
+	Fimr_address   struct{ Fs_addr In_addr_t }
+	Fimr_ifindex   int32
+} /* in.h:150:1 */
+
+// Structure used for IP_PKTINFO.
+type In_pktinfo = struct {
+	Fipi_ifindex  int32
+	Fipi_spec_dst struct{ Fs_addr In_addr_t }
+	Fipi_addr     struct{ Fs_addr In_addr_t }
+} /* in.h:158:1 */
+
+// Type to represent a port.
+type In_port_t = Uint16_t /* in.h:123:18 */
+
+// Definitions of the bits in an Internet address integer.
+//
+//    On subnets, host and network parts are found according to
+//    the subnet mask, not these masks.
+
+// Address to accept any incoming messages.
+// Address to send to all hosts.
+// Address indicating an error return.
+
+// Network number for local host loopback.
+// Address to loopback in software to local host.
+
+// Defines for Multicast INADDR.
+
+// IPv6 address
+type In6_addr = struct {
+	F__in6_u struct {
+		F__ccgo_pad1 [0]uint32
+		F__u6_addr8  [16]Uint8_t
+	}
+} /* in.h:216:1 */
+
+// ::1
+
+// Structure describing an Internet socket address.
+type Sockaddr_in = struct {
+	Fsin_family Sa_family_t
+	Fsin_port   In_port_t
+	Fsin_addr   struct{ Fs_addr In_addr_t }
+	Fsin_zero   [8]uint8
+} /* in.h:242:1 */
+
+// Ditto, for IPv6.
+type Sockaddr_in6 = struct {
+	Fsin6_family   Sa_family_t
+	Fsin6_port     In_port_t
+	Fsin6_flowinfo Uint32_t
+	Fsin6_addr     struct {
+		F__in6_u struct {
+			F__ccgo_pad1 [0]uint32
+			F__u6_addr8  [16]Uint8_t
+		}
+	}
+	Fsin6_scope_id Uint32_t
+} /* in.h:257:1 */
+
+// IPv4 multicast request.
+type Ip_mreq = struct {
+	Fimr_multiaddr struct{ Fs_addr In_addr_t }
+	Fimr_interface struct{ Fs_addr In_addr_t }
+} /* in.h:269:1 */
+
+type Ip_mreq_source = struct {
+	Fimr_multiaddr  struct{ Fs_addr In_addr_t }
+	Fimr_interface  struct{ Fs_addr In_addr_t }
+	Fimr_sourceaddr struct{ Fs_addr In_addr_t }
+} /* in.h:278:1 */
+
+// Likewise, for IPv6.
+type Ipv6_mreq = struct {
+	Fipv6mr_multiaddr struct {
+		F__in6_u struct {
+			F__ccgo_pad1 [0]uint32
+			F__u6_addr8  [16]Uint8_t
+		}
+	}
+	Fipv6mr_interface uint32
+} /* in.h:293:1 */
+
+// Multicast group request.
+type Group_req = struct {
+	Fgr_interface Uint32_t
+	F__ccgo_pad1  [4]byte
+	Fgr_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+} /* in.h:305:1 */
+
+type Group_source_req = struct {
+	Fgsr_interface Uint32_t
+	F__ccgo_pad1   [4]byte
+	Fgsr_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+	Fgsr_source struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+} /* in.h:314:1 */
+
+// Full-state filter operations.
+type Ip_msfilter = struct {
+	Fimsf_multiaddr struct{ Fs_addr In_addr_t }
+	Fimsf_interface struct{ Fs_addr In_addr_t }
+	Fimsf_fmode     Uint32_t
+	Fimsf_numsrc    Uint32_t
+	Fimsf_slist     [1]struct{ Fs_addr In_addr_t }
+} /* in.h:328:1 */
+
+type Group_filter = struct {
+	Fgf_interface Uint32_t
+	F__ccgo_pad1  [4]byte
+	Fgf_group     struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+	Fgf_fmode  Uint32_t
+	Fgf_numsrc Uint32_t
+	Fgf_slist  [1]struct {
+		Fss_family    Sa_family_t
+		F__ss_padding [118]uint8
+		F__ss_align   uint64
+	}
+} /* in.h:349:1 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/poll/capi_linux_riscv64.go b/vendor/modernc.org/libc/poll/capi_linux_riscv64.go
new file mode 100644
index 00000000..529a2c83
--- /dev/null
+++ b/vendor/modernc.org/libc/poll/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_riscv64.go -pkgname poll', DO NOT EDIT.
+
+package poll
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/poll/poll_linux_riscv64.go b/vendor/modernc.org/libc/poll/poll_linux_riscv64.go
new file mode 100644
index 00000000..6fbc0695
--- /dev/null
+++ b/vendor/modernc.org/libc/poll/poll_linux_riscv64.go
@@ -0,0 +1,677 @@
+// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_riscv64.go -pkgname poll', DO NOT EDIT.
+
+package poll
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	POLLERR            = 0x008
+	POLLHUP            = 0x010
+	POLLIN             = 0x001
+	POLLNVAL           = 0x020
+	POLLOUT            = 0x004
+	POLLPRI            = 0x002
+	POLLRDBAND         = 0x080
+	POLLRDNORM         = 0x040
+	POLLWRBAND         = 0x200
+	POLLWRNORM         = 0x100
+	X_ATFILE_SOURCE    = 1
+	X_DEFAULT_SOURCE   = 1
+	X_FEATURES_H       = 1
+	X_FILE_OFFSET_BITS = 64
+	X_LP64             = 1
+	X_POSIX_C_SOURCE   = 200809
+	X_POSIX_SOURCE     = 1
+	X_STDC_PREDEF_H    = 1
+	X_SYS_CDEFS_H      = 1
+	X_SYS_POLL_H       = 1
+	Linux              = 1
+	Unix               = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Compatibility definitions for System V `poll' interface.
+//    Copyright (C) 1994-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// Get the platform dependent bits of `poll'.
+// Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Event types that can be polled for.  These bits may be set in `events'
+//    to indicate the interesting event types; they will appear in `revents'
+//    to indicate the status of the file descriptor.
+
+// These values are defined in XPG4.2.
+
+// Event types always implicitly polled for.  These bits need not be set in
+//    `events', but they will appear in `revents' to indicate the status of
+//    the file descriptor.
+
+// Type used for the number of file descriptors.
+type Nfds_t = uint64 /* poll.h:33:27 */
+
+// Data structure describing a polling request.
+type Pollfd = struct {
+	Ffd      int32
+	Fevents  int16
+	Frevents int16
+} /* poll.h:36:1 */
+
+// Define some inlines helping to catch common problems.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/pthread/capi_linux_riscv64.go b/vendor/modernc.org/libc/pthread/capi_linux_riscv64.go
new file mode 100644
index 00000000..84fa5dd9
--- /dev/null
+++ b/vendor/modernc.org/libc/pthread/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo pthread/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o pthread/pthread_linux_riscv64.go -pkgname pthread', DO NOT EDIT.
+
+package pthread
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/pthread/pthread_linux_riscv64.go b/vendor/modernc.org/libc/pthread/pthread_linux_riscv64.go
new file mode 100644
index 00000000..82d95faa
--- /dev/null
+++ b/vendor/modernc.org/libc/pthread/pthread_linux_riscv64.go
@@ -0,0 +1,2201 @@
+// Code generated by 'ccgo pthread/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o pthread/pthread_linux_riscv64.go -pkgname pthread', DO NOT EDIT.
+
+package pthread
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	CLOCK_BOOTTIME                  = 7
+	CLOCK_BOOTTIME_ALARM            = 9
+	CLOCK_MONOTONIC                 = 1
+	CLOCK_MONOTONIC_COARSE          = 6
+	CLOCK_MONOTONIC_RAW             = 4
+	CLOCK_PROCESS_CPUTIME_ID        = 2
+	CLOCK_REALTIME                  = 0
+	CLOCK_REALTIME_ALARM            = 8
+	CLOCK_REALTIME_COARSE           = 5
+	CLOCK_TAI                       = 11
+	CLOCK_THREAD_CPUTIME_ID         = 3
+	PTHREAD_BARRIER_SERIAL_THREAD   = -1
+	PTHREAD_ONCE_INIT               = 0
+	PTHREAD_STACK_MIN               = 16384
+	SCHED_FIFO                      = 1
+	SCHED_OTHER                     = 0
+	SCHED_RR                        = 2
+	TIMER_ABSTIME                   = 1
+	TIME_UTC                        = 1
+	X_ATFILE_SOURCE                 = 1
+	X_BITS_CPU_SET_H                = 1
+	X_BITS_ENDIANNESS_H             = 1
+	X_BITS_ENDIAN_H                 = 1
+	X_BITS_PTHREADTYPES_ARCH_H      = 1
+	X_BITS_PTHREADTYPES_COMMON_H    = 1
+	X_BITS_SCHED_H                  = 1
+	X_BITS_TIME64_H                 = 1
+	X_BITS_TIME_H                   = 1
+	X_BITS_TYPESIZES_H              = 1
+	X_BITS_TYPES_H                  = 1
+	X_BITS_TYPES_LOCALE_T_H         = 1
+	X_BITS_TYPES_STRUCT_SCHED_PARAM = 1
+	X_BITS_TYPES___LOCALE_T_H       = 1
+	X_BSD_SIZE_T_                   = 0
+	X_BSD_SIZE_T_DEFINED_           = 0
+	X_DEFAULT_SOURCE                = 1
+	X_FEATURES_H                    = 1
+	X_FILE_OFFSET_BITS              = 64
+	X_GCC_SIZE_T                    = 0
+	X_LP64                          = 1
+	X_POSIX_C_SOURCE                = 200809
+	X_POSIX_SOURCE                  = 1
+	X_PTHREAD_H                     = 1
+	X_RISCV_BITS_SETJMP_H           = 0
+	X_RWLOCK_INTERNAL_H             = 0
+	X_SCHED_H                       = 1
+	X_SIZET_                        = 0
+	X_SIZE_T                        = 0
+	X_SIZE_T_                       = 0
+	X_SIZE_T_DECLARED               = 0
+	X_SIZE_T_DEFINED                = 0
+	X_SIZE_T_DEFINED_               = 0
+	X_STDC_PREDEF_H                 = 1
+	X_STRUCT_TIMESPEC               = 1
+	X_SYS_CDEFS_H                   = 1
+	X_SYS_SIZE_T_H                  = 0
+	X_THREAD_MUTEX_INTERNAL_H       = 1
+	X_THREAD_SHARED_TYPES_H         = 1
+	X_TIME_H                        = 1
+	X_T_SIZE                        = 0
+	X_T_SIZE_                       = 0
+	Linux                           = 1
+	Unix                            = 1
+)
+
+// Read-write lock types.
+const ( /* pthread.h:104:1: */
+	PTHREAD_RWLOCK_PREFER_READER_NP              = 0
+	PTHREAD_RWLOCK_PREFER_WRITER_NP              = 1
+	PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP = 2
+	PTHREAD_RWLOCK_DEFAULT_NP                    = 0
+)
+
+// Read-write lock initializers.
+
+// Scheduler inheritance.
+const ( /* pthread.h:124:1: */
+	PTHREAD_INHERIT_SCHED  = 0
+	PTHREAD_EXPLICIT_SCHED = 1
+)
+
+// Scope handling.
+const ( /* pthread.h:134:1: */
+	PTHREAD_SCOPE_SYSTEM  = 0
+	PTHREAD_SCOPE_PROCESS = 1
+)
+
+// Process shared or private flag.
+const ( /* pthread.h:144:1: */
+	PTHREAD_PROCESS_PRIVATE = 0
+	PTHREAD_PROCESS_SHARED  = 1
+)
+
+// Cancellation
+const ( /* pthread.h:168:1: */
+	PTHREAD_CANCEL_ENABLE  = 0
+	PTHREAD_CANCEL_DISABLE = 1
+)
+const ( /* pthread.h:175:1: */
+	PTHREAD_CANCEL_DEFERRED     = 0
+	PTHREAD_CANCEL_ASYNCHRONOUS = 1
+)
+
+// Definition of PTHREAD_STACK_MIN, possibly dynamic.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition of PTHREAD_STACK_MIN.  Linux version.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Minimum size for a thread.  We are free to choose a reasonable value.
+
+// Detach state.
+const ( /* pthread.h:37:1: */
+	PTHREAD_CREATE_JOINABLE = 0
+	PTHREAD_CREATE_DETACHED = 1
+)
+
+// Mutex types.
+const ( /* pthread.h:47:1: */
+	PTHREAD_MUTEX_TIMED_NP      = 0
+	PTHREAD_MUTEX_RECURSIVE_NP  = 1
+	PTHREAD_MUTEX_ERRORCHECK_NP = 2
+	PTHREAD_MUTEX_ADAPTIVE_NP   = 3
+	PTHREAD_MUTEX_NORMAL        = 0
+	PTHREAD_MUTEX_RECURSIVE     = 1
+	PTHREAD_MUTEX_ERRORCHECK    = 2
+	PTHREAD_MUTEX_DEFAULT       = 0
+)
+
+// Robust mutex or not flags.
+const ( /* pthread.h:69:1: */
+	PTHREAD_MUTEX_STALLED    = 0
+	PTHREAD_MUTEX_STALLED_NP = 0
+	PTHREAD_MUTEX_ROBUST     = 1
+	PTHREAD_MUTEX_ROBUST_NP  = 1
+)
+
+// Mutex protocols.
+const ( /* pthread.h:81:1: */
+	PTHREAD_PRIO_NONE    = 0
+	PTHREAD_PRIO_INHERIT = 1
+	PTHREAD_PRIO_PROTECT = 2
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// Definitions for POSIX 1003.1b-1993 (aka POSIX.4) scheduling interface.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get type definitions.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Definitions for byte order, according to significance of bytes,
+//    from low addresses to high addresses.  The value is what you get by
+//    putting '4' in the most significant byte, '3' in the second most
+//    significant byte, '2' in the second least significant byte, and '1'
+//    in the least significant byte, and then writing down one digit for
+//    each byte, starting with the byte at the lowest address at the left,
+//    and proceeding to the byte with the highest address at the right.
+
+// This file defines `__BYTE_ORDER' for the particular machine.
+
+// RISC-V is little-endian.
+
+// Some machines may need to use a different endianness for floating point
+//    values.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+type Pid_t = X__pid_t /* sched.h:38:17 */
+
+// Get system specific constant and data structure definitions.
+// Definitions of constants and data structure for POSIX 1003.1b-1993
+//    scheduling interface.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Scheduling algorithms.
+
+// Sched parameter structure.  Generic version.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library;  if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Data structure to describe a process' schedulability.
+type Sched_param = struct{ Fsched_priority int32 } /* struct_sched_param.h:23:1 */
+
+// Definition of the cpu_set_t structure used by the POSIX 1003.1b-1993
+//    scheduling interface.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Size definition for CPU sets.
+
+// Type for array elements in 'cpu_set_t'.
+type X__cpu_mask = uint64 /* cpu-set.h:32:25 */
+
+// Basic access functions.
+
+// Data structure to describe CPU mask.
+type Cpu_set_t = struct{ F__bits [16]X__cpu_mask } /* cpu-set.h:42:3 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	ISO C99 Standard: 7.23 Date and time	<time.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// This defines CLOCKS_PER_SEC, which is the number of processor clock
+//    ticks per second, and possibly a number of other constants.
+// System-dependent timing definitions.  Linux version.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <time.h> instead.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// ISO/IEC 9899:1999 7.23.1: Components of time
+//    The macro `CLOCKS_PER_SEC' is an expression with type `clock_t' that is
+//    the number per second of the value returned by the `clock' function.
+// CAE XSH, Issue 4, Version 2: <time.h>
+//    The value of CLOCKS_PER_SEC is required to be 1 million on all
+//    XSI-conformant systems.
+
+// Identifier for system-wide realtime clock.
+// Monotonic system-wide clock.
+// High-resolution timer from the CPU.
+// Thread-specific CPU-time clock.
+// Monotonic system-wide clock, not adjusted for frequency scaling.
+// Identifier for system-wide realtime clock, updated only on ticks.
+// Monotonic system-wide clock, updated only on ticks.
+// Monotonic system-wide clock that includes time spent in suspension.
+// Like CLOCK_REALTIME but also wakes suspended system.
+// Like CLOCK_BOOTTIME but also wakes suspended system.
+// Like CLOCK_REALTIME but in International Atomic Time.
+
+// Flag to indicate time is absolute.
+
+// Many of the typedefs and structs whose official home is this header
+//    may also need to be defined by other headers.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// ISO C `broken-down time' structure.
+type Tm = struct {
+	Ftm_sec      int32
+	Ftm_min      int32
+	Ftm_hour     int32
+	Ftm_mday     int32
+	Ftm_mon      int32
+	Ftm_year     int32
+	Ftm_wday     int32
+	Ftm_yday     int32
+	Ftm_isdst    int32
+	F__ccgo_pad1 [4]byte
+	Ftm_gmtoff   int64
+	Ftm_zone     uintptr
+} /* struct_tm.h:7:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// POSIX.1b structure for timer start values and intervals.
+type Itimerspec = struct {
+	Fit_interval struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fit_value struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+} /* struct_itimerspec.h:8:1 */
+
+// Definition of locale_t.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition of struct __locale_struct and __locale_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// POSIX.1-2008: the locale_t type, representing a locale context
+//    (implementation-namespace version).  This type should be treated
+//    as opaque by applications; some details are exposed for the sake of
+//    efficiency in e.g. ctype functions.
+
+type X__locale_struct = struct {
+	F__locales       [13]uintptr
+	F__ctype_b       uintptr
+	F__ctype_tolower uintptr
+	F__ctype_toupper uintptr
+	F__names         [13]uintptr
+} /* __locale_t.h:28:1 */
+
+type X__locale_t = uintptr /* __locale_t.h:42:32 */
+
+type Locale_t = X__locale_t /* locale_t.h:24:20 */
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// Define the machine-dependent type `jmp_buf'.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+type X__jmp_buf_internal_tag = struct {
+	F__pc     int64
+	F__regs   [12]int64
+	F__sp     int64
+	F__fpregs [12]float64
+} /* setjmp.h:22:9 */
+
+// Define the machine-dependent type `jmp_buf'.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+type X__jmp_buf = [1]X__jmp_buf_internal_tag /* setjmp.h:37:5 */
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// Define struct __jmp_buf_tag.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define the machine-dependent type `jmp_buf'.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Calling environment, plus possibly a saved signal mask.
+type X__jmp_buf_tag = struct {
+	F__jmpbuf         X__jmp_buf
+	F__mask_was_saved int32
+	F__ccgo_pad1      [4]byte
+	F__saved_mask     X__sigset_t
+} /* struct___jmp_buf_tag.h:26:1 */
+
+// Conditional variable handling.
+
+// Cleanup buffers
+type X_pthread_cleanup_buffer = struct {
+	F__routine    uintptr
+	F__arg        uintptr
+	F__canceltype int32
+	F__ccgo_pad1  [4]byte
+	F__prev       uintptr
+} /* pthread.h:159:1 */
+
+// Cancellation handling with integration into exception handling.
+
+type X__cancel_jmp_buf_tag = struct {
+	F__cancel_jmp_buf X__jmp_buf
+	F__mask_was_saved int32
+	F__ccgo_pad1      [4]byte
+} /* pthread.h:538:1 */
+
+type X__pthread_unwind_buf_t = struct {
+	F__cancel_jmp_buf [1]X__cancel_jmp_buf_tag
+	F__pad            [4]uintptr
+} /* pthread.h:548:3 */
+
+// No special attributes by default.
+
+// Structure to hold the cleanup handler information.
+type X__pthread_cleanup_frame = struct {
+	F__cancel_routine uintptr
+	F__cancel_arg     uintptr
+	F__do_it          int32
+	F__cancel_type    int32
+} /* pthread.h:557:1 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/pwd/capi_linux_riscv64.go b/vendor/modernc.org/libc/pwd/capi_linux_riscv64.go
new file mode 100644
index 00000000..b5b0b965
--- /dev/null
+++ b/vendor/modernc.org/libc/pwd/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo pwd/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o pwd/pwd_linux_riscv64.go -pkgname pwd', DO NOT EDIT.
+
+package pwd
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/pwd/pwd_linux_riscv64.go b/vendor/modernc.org/libc/pwd/pwd_linux_riscv64.go
new file mode 100644
index 00000000..c8727bd7
--- /dev/null
+++ b/vendor/modernc.org/libc/pwd/pwd_linux_riscv64.go
@@ -0,0 +1,958 @@
+// Code generated by 'ccgo pwd/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o pwd/pwd_linux_riscv64.go -pkgname pwd', DO NOT EDIT.
+
+package pwd
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	NSS_BUFLEN_PASSWD     = 1024
+	X_ATFILE_SOURCE       = 1
+	X_BITS_TIME64_H       = 1
+	X_BITS_TYPESIZES_H    = 1
+	X_BITS_TYPES_H        = 1
+	X_BSD_SIZE_T_         = 0
+	X_BSD_SIZE_T_DEFINED_ = 0
+	X_DEFAULT_SOURCE      = 1
+	X_FEATURES_H          = 1
+	X_FILE_OFFSET_BITS    = 64
+	X_GCC_SIZE_T          = 0
+	X_LP64                = 1
+	X_POSIX_C_SOURCE      = 200809
+	X_POSIX_SOURCE        = 1
+	X_PWD_H               = 1
+	X_SIZET_              = 0
+	X_SIZE_T              = 0
+	X_SIZE_T_             = 0
+	X_SIZE_T_DECLARED     = 0
+	X_SIZE_T_DEFINED      = 0
+	X_SIZE_T_DEFINED_     = 0
+	X_STDC_PREDEF_H       = 1
+	X_SYS_CDEFS_H         = 1
+	X_SYS_SIZE_T_H        = 0
+	X_T_SIZE              = 0
+	X_T_SIZE_             = 0
+	Linux                 = 1
+	Unix                  = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 9.2.2 User Database Access	<pwd.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// The Single Unix specification says that some more types are
+//    available here.
+type Gid_t = X__gid_t /* pwd.h:38:17 */
+
+type Uid_t = X__uid_t /* pwd.h:43:17 */
+
+// A record in the user database.
+type Passwd = struct {
+	Fpw_name   uintptr
+	Fpw_passwd uintptr
+	Fpw_uid    X__uid_t
+	Fpw_gid    X__gid_t
+	Fpw_gecos  uintptr
+	Fpw_dir    uintptr
+	Fpw_shell  uintptr
+} /* pwd.h:49:1 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/signal/capi_linux_riscv64.go b/vendor/modernc.org/libc/signal/capi_linux_riscv64.go
new file mode 100644
index 00000000..81d5396e
--- /dev/null
+++ b/vendor/modernc.org/libc/signal/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo signal/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o signal/signal_linux_riscv64.go -pkgname signal', DO NOT EDIT.
+
+package signal
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/signal/more_linux_riscv64.go b/vendor/modernc.org/libc/signal/more_linux_riscv64.go
new file mode 100644
index 00000000..25cc318b
--- /dev/null
+++ b/vendor/modernc.org/libc/signal/more_linux_riscv64.go
@@ -0,0 +1,12 @@
+// Copyright 2020 The Libc Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package signal
+
+const (
+	//	/usr/include/asm-generic/signal-defs.h:24:#define SIG_DFL	((__sighandler_t)0)	/* default signal handling */
+	SIG_DFL = 0
+	//	/usr/include/asm-generic/signal-defs.h:25:#define SIG_IGN	((__sighandler_t)1)	/* ignore signal */
+	SIG_IGN = 1
+)
diff --git a/vendor/modernc.org/libc/signal/signal_linux_riscv64.go b/vendor/modernc.org/libc/signal/signal_linux_riscv64.go
new file mode 100644
index 00000000..1a32b33c
--- /dev/null
+++ b/vendor/modernc.org/libc/signal/signal_linux_riscv64.go
@@ -0,0 +1,2359 @@
+// Code generated by 'ccgo signal/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o signal/signal_linux_riscv64.go -pkgname signal', DO NOT EDIT.
+
+package signal
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	MINSIGSTKSZ                  = 2048
+	NGREG                        = 32
+	NSIG                         = 65
+	REG_A0                       = 10
+	REG_NARGS                    = 8
+	REG_PC                       = 0
+	REG_RA                       = 1
+	REG_S0                       = 8
+	REG_S1                       = 9
+	REG_S2                       = 18
+	REG_SP                       = 2
+	REG_TP                       = 4
+	SA_INTERRUPT                 = 0x20000000
+	SA_NOCLDSTOP                 = 1
+	SA_NOCLDWAIT                 = 2
+	SA_NODEFER                   = 0x40000000
+	SA_NOMASK                    = 1073741824
+	SA_ONESHOT                   = 2147483648
+	SA_ONSTACK                   = 0x08000000
+	SA_RESETHAND                 = 0x80000000
+	SA_RESTART                   = 0x10000000
+	SA_SIGINFO                   = 4
+	SA_STACK                     = 134217728
+	SIGABRT                      = 6
+	SIGALRM                      = 14
+	SIGBUS                       = 7
+	SIGCHLD                      = 17
+	SIGCLD                       = 17
+	SIGCONT                      = 18
+	SIGFPE                       = 8
+	SIGHUP                       = 1
+	SIGILL                       = 4
+	SIGINT                       = 2
+	SIGIO                        = 29
+	SIGIOT                       = 6
+	SIGKILL                      = 9
+	SIGPIPE                      = 13
+	SIGPOLL                      = 29
+	SIGPROF                      = 27
+	SIGPWR                       = 30
+	SIGQUIT                      = 3
+	SIGSEGV                      = 11
+	SIGSTKFLT                    = 16
+	SIGSTKSZ                     = 8192
+	SIGSTOP                      = 19
+	SIGSYS                       = 31
+	SIGTERM                      = 15
+	SIGTRAP                      = 5
+	SIGTSTP                      = 20
+	SIGTTIN                      = 21
+	SIGTTOU                      = 22
+	SIGURG                       = 23
+	SIGUSR1                      = 10
+	SIGUSR2                      = 12
+	SIGVTALRM                    = 26
+	SIGWINCH                     = 28
+	SIGXCPU                      = 24
+	SIGXFSZ                      = 25
+	SIG_BLOCK                    = 0
+	SIG_SETMASK                  = 2
+	SIG_UNBLOCK                  = 1
+	X_ATFILE_SOURCE              = 1
+	X_BITS_ENDIANNESS_H          = 1
+	X_BITS_ENDIAN_H              = 1
+	X_BITS_PTHREADTYPES_ARCH_H   = 1
+	X_BITS_PTHREADTYPES_COMMON_H = 1
+	X_BITS_SIGACTION_H           = 1
+	X_BITS_SIGCONTEXT_H          = 1
+	X_BITS_SIGEVENT_CONSTS_H     = 1
+	X_BITS_SIGINFO_ARCH_H        = 1
+	X_BITS_SIGINFO_CONSTS_H      = 1
+	X_BITS_SIGNUM_ARCH_H         = 1
+	X_BITS_SIGNUM_GENERIC_H      = 1
+	X_BITS_SIGSTACK_H            = 1
+	X_BITS_SIGTHREAD_H           = 1
+	X_BITS_SS_FLAGS_H            = 1
+	X_BITS_TIME64_H              = 1
+	X_BITS_TYPESIZES_H           = 1
+	X_BITS_TYPES_H               = 1
+	X_BSD_SIZE_T_                = 0
+	X_BSD_SIZE_T_DEFINED_        = 0
+	X_DEFAULT_SOURCE             = 1
+	X_FEATURES_H                 = 1
+	X_FILE_OFFSET_BITS           = 64
+	X_GCC_SIZE_T                 = 0
+	X_LP64                       = 1
+	X_NSIG                       = 65
+	X_POSIX_C_SOURCE             = 200809
+	X_POSIX_SOURCE               = 1
+	X_RWLOCK_INTERNAL_H          = 0
+	X_SIGNAL_H                   = 0
+	X_SIZET_                     = 0
+	X_SIZE_T                     = 0
+	X_SIZE_T_                    = 0
+	X_SIZE_T_DECLARED            = 0
+	X_SIZE_T_DEFINED             = 0
+	X_SIZE_T_DEFINED_            = 0
+	X_STDC_PREDEF_H              = 1
+	X_STRUCT_TIMESPEC            = 1
+	X_SYS_CDEFS_H                = 1
+	X_SYS_SIZE_T_H               = 0
+	X_SYS_UCONTEXT_H             = 1
+	X_THREAD_MUTEX_INTERNAL_H    = 1
+	X_THREAD_SHARED_TYPES_H      = 1
+	X_T_SIZE                     = 0
+	X_T_SIZE_                    = 0
+	Linux                        = 1
+	Unix                         = 1
+)
+
+// POSIX names to access some of the members.
+
+// sigevent constants.  Linux version.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// `sigev_notify' values.
+const ( /* sigevent-consts.h:27:1: */
+	SIGEV_SIGNAL = 0 // Notify via signal.
+	SIGEV_NONE   = 1 // Other notification: meaningless.
+	SIGEV_THREAD = 2 // Deliver via thread creation.
+
+	SIGEV_THREAD_ID = 4
+)
+
+// `si_code' values for SIGSEGV signal.
+const ( /* siginfo-consts.h:119:1: */
+	SEGV_MAPERR  = 1 // Address not mapped to object.
+	SEGV_ACCERR  = 2 // Invalid permissions for mapped object.
+	SEGV_BNDERR  = 3 // Bounds checking failure.
+	SEGV_PKUERR  = 4 // Protection key checking failure.
+	SEGV_ACCADI  = 5 // ADI not enabled for mapped object.
+	SEGV_ADIDERR = 6 // Disrupting MCD error.
+	SEGV_ADIPERR = 7 // Precise MCD exception.
+	SEGV_MTEAERR = 8 // Asynchronous ARM MTE error.
+	SEGV_MTESERR = 9
+)
+
+// `si_code' values for SIGBUS signal.
+const ( /* siginfo-consts.h:142:1: */
+	BUS_ADRALN    = 1 // Invalid address alignment.
+	BUS_ADRERR    = 2 // Non-existant physical address.
+	BUS_OBJERR    = 3 // Object specific hardware error.
+	BUS_MCEERR_AR = 4 // Hardware memory error: action required.
+	BUS_MCEERR_AO = 5
+)
+
+// `si_code' values for SIGCHLD signal.
+const ( /* siginfo-consts.h:176:1: */
+	CLD_EXITED    = 1 // Child has exited.
+	CLD_KILLED    = 2 // Child was killed.
+	CLD_DUMPED    = 3 // Child terminated abnormally.
+	CLD_TRAPPED   = 4 // Traced child has trapped.
+	CLD_STOPPED   = 5 // Child has stopped.
+	CLD_CONTINUED = 6
+)
+
+// `si_code' values for SIGPOLL signal.
+const ( /* siginfo-consts.h:193:1: */
+	POLL_IN  = 1 // Data input available.
+	POLL_OUT = 2 // Output buffers available.
+	POLL_MSG = 3 // Input message available.
+	POLL_ERR = 4 // I/O error.
+	POLL_PRI = 5 // High priority input available.
+	POLL_HUP = 6
+)
+
+// X/Open requires some more fields with fixed names.
+
+// siginfo constants.  Linux version.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Most of these constants are uniform across all architectures, but there
+//    is one exception.
+// Architecture-specific adjustments to siginfo_t.
+
+// Values for `si_code'.  Positive values are reserved for kernel-generated
+//    signals.
+const ( /* siginfo-consts.h:35:1: */
+	SI_ASYNCNL  = -60 // Sent by asynch name lookup completion.
+	SI_DETHREAD = -7  // Sent by execve killing subsidiary
+	// 				   threads.
+	SI_TKILL   = -6 // Sent by tkill.
+	SI_SIGIO   = -5 // Sent by queued SIGIO.
+	SI_ASYNCIO = -4 // Sent by AIO completion.
+	SI_MESGQ   = -3 // Sent by real time mesq state change.
+	SI_TIMER   = -2 // Sent by timer expiration.
+	SI_QUEUE   = -1 // Sent by sigqueue.
+	SI_USER    = 0  // Sent by kill, sigsend.
+	SI_KERNEL  = 128
+)
+
+// `si_code' values for SIGILL signal.
+const ( /* siginfo-consts.h:71:1: */
+	ILL_ILLOPC   = 1 // Illegal opcode.
+	ILL_ILLOPN   = 2 // Illegal operand.
+	ILL_ILLADR   = 3 // Illegal addressing mode.
+	ILL_ILLTRP   = 4 // Illegal trap.
+	ILL_PRVOPC   = 5 // Privileged opcode.
+	ILL_PRVREG   = 6 // Privileged register.
+	ILL_COPROC   = 7 // Coprocessor error.
+	ILL_BADSTK   = 8 // Internal stack error.
+	ILL_BADIADDR = 9
+)
+
+// `si_code' values for SIGFPE signal.
+const ( /* siginfo-consts.h:94:1: */
+	FPE_INTDIV   = 1  // Integer divide by zero.
+	FPE_INTOVF   = 2  // Integer overflow.
+	FPE_FLTDIV   = 3  // Floating point divide by zero.
+	FPE_FLTOVF   = 4  // Floating point overflow.
+	FPE_FLTUND   = 5  // Floating point underflow.
+	FPE_FLTRES   = 6  // Floating point inexact result.
+	FPE_FLTINV   = 7  // Floating point invalid operation.
+	FPE_FLTSUB   = 8  // Subscript out of range.
+	FPE_FLTUNK   = 14 // Undiagnosed floating-point exception.
+	FPE_CONDTRAP = 15
+)
+
+// sigstack, sigaltstack definitions.
+//    Copyright (C) 1998-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Minimum stack size for a signal handler.
+
+// System default stack size.
+
+// Definition of MINSIGSTKSZ and SIGSTKSZ.  Linux version.
+//    Copyright (C) 2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// ss_flags values for stack_t.  Linux version.
+//    Copyright (C) 1998-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Possible values for `ss_flags'.
+const ( /* ss_flags.h:27:1: */
+	SS_ONSTACK = 1
+	SS_DISABLE = 2
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	ISO C99 Standard: 7.14 Signal handling <signal.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+// Signal number constants.  Generic template.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Fake signal functions.
+
+// We define here all the signal names listed in POSIX (1003.1-2008);
+//    as of 1003.1-2013, no additional signals have been added by POSIX.
+//    We also define here signal names that historically exist in every
+//    real-world POSIX variant (e.g. SIGWINCH).
+//
+//    Signals in the 1-15 range are defined with their historical numbers.
+//    For other signals, we use the BSD numbers.
+//    There are two unallocated signal numbers in the 1-31 range: 7 and 29.
+//    Signal number 0 is reserved for use as kill(pid, 0), to test whether
+//    a process exists without sending it a signal.
+
+// ISO C99 signals.
+
+// Historical signals specified by POSIX.
+
+// Archaic names for compatibility.
+
+// Not all systems support real-time signals.  bits/signum.h indicates
+//    that they are supported by overriding __SIGRTMAX to a value greater
+//    than __SIGRTMIN.  These constants give the kernel-level hard limits,
+//    but some real-time signals may be used internally by glibc.  Do not
+//    use these constants in application code; use SIGRTMIN and SIGRTMAX
+//    (defined in signal.h) instead.
+
+// Include system specific bits.
+// Signal number definitions.  Linux version.
+//    Copyright (C) 1995-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Adjustments and additions to the signal number constants for
+//    most Linux systems.
+
+// Historical signals specified by POSIX.
+
+// New(er) POSIX signals (1003.1-2008, 1003.1-2013).
+
+// Nonstandard signals found in all modern POSIX systems
+//    (including both BSD and Linux).
+
+// Archaic names for compatibility.
+
+// Biggest signal number + 1 (including real-time signals).
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// An integral type that can be modified atomically, without the
+//    possibility of a signal arriving in the middle of the operation.
+type Sig_atomic_t = X__sig_atomic_t /* sig_atomic_t.h:8:24 */
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+type Pid_t = X__pid_t /* signal.h:40:17 */
+type Uid_t = X__uid_t /* signal.h:46:17 */
+
+// We need `struct timespec' later on.
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Definitions for byte order, according to significance of bytes,
+//    from low addresses to high addresses.  The value is what you get by
+//    putting '4' in the most significant byte, '3' in the second most
+//    significant byte, '2' in the second least significant byte, and '1'
+//    in the least significant byte, and then writing down one digit for
+//    each byte, starting with the byte at the lowest address at the left,
+//    and proceeding to the byte with the highest address at the right.
+
+// This file defines `__BYTE_ORDER' for the particular machine.
+
+// RISC-V is little-endian.
+
+// Some machines may need to use a different endianness for floating point
+//    values.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Define __sigval_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Type for data associated with a signal.
+type Sigval = struct {
+	F__ccgo_pad1 [0]uint64
+	Fsival_int   int32
+	F__ccgo_pad2 [4]byte
+} /* __sigval_t.h:24:1 */
+
+type X__sigval_t = Sigval /* __sigval_t.h:30:22 */
+
+// Some fields of siginfo_t have architecture-specific variations.
+// Architecture-specific adjustments to siginfo_t.
+
+// This architecture has no adjustments to make to siginfo_t.
+
+type Siginfo_t = struct {
+	Fsi_signo  int32
+	Fsi_errno  int32
+	Fsi_code   int32
+	F__pad0    int32
+	F_sifields struct {
+		F__ccgo_pad1 [0]uint64
+		F_pad        [28]int32
+	}
+} /* siginfo_t.h:124:5 */
+
+// Architectures might also add architecture-specific constants.
+//    These are all considered GNU extensions.
+
+// Define __sigval_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// To avoid sigval_t (not a standard type name) having C++ name
+//    mangling depending on whether the selected standard includes union
+//    sigval, it should not be defined at all when using a standard for
+//    which the sigval name is not reserved; in that case, headers should
+//    not include <bits/types/sigval_t.h> and should use only the
+//    internal __sigval_t name.
+
+type Sigval_t = X__sigval_t /* sigval_t.h:16:20 */
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Define __sigval_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Forward declaration.
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* sigevent_t.h:17:9 */
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Define __sigval_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Forward declaration.
+type Pthread_attr_t = Pthread_attr_t1 /* sigevent_t.h:17:30 */
+
+// Structure to transport application-defined values with signals.
+type Sigevent = struct {
+	Fsigev_value  X__sigval_t
+	Fsigev_signo  int32
+	Fsigev_notify int32
+	F_sigev_un    struct {
+		F__ccgo_pad1 [0]uint64
+		F_pad        [12]int32
+	}
+} /* sigevent_t.h:22:9 */
+
+// Structure to transport application-defined values with signals.
+type Sigevent_t = Sigevent /* sigevent_t.h:42:5 */
+
+// Type of a signal handler.
+type X__sighandler_t = uintptr /* signal.h:72:14 */
+
+// 4.4 BSD uses the name `sig_t' for this.
+type Sig_t = X__sighandler_t /* signal.h:193:24 */
+
+// Get the system-specific definitions of `struct sigaction'
+//    and the `SA_*' and `SIG_*'. constants.
+// The proper definitions for Linux's sigaction.
+//    Copyright (C) 1993-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Structure describing the action to be taken when a signal arrives.
+type Sigaction = struct {
+	F__sigaction_handler struct{ Fsa_handler X__sighandler_t }
+	Fsa_mask             X__sigset_t
+	Fsa_flags            int32
+	F__ccgo_pad1         [4]byte
+	Fsa_restorer         uintptr
+} /* sigaction.h:27:1 */
+
+// Get machine-dependent `struct sigcontext' and signal subcodes.
+// Machine-dependent signal context structure for Linux.  RISC-V version.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.  This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+type Sigcontext = struct {
+	Fgregs  [32]uint64
+	Ffpregs [66]uint64
+} /* sigcontext.h:25:1 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Define stack_t.  Linux version.
+//    Copyright (C) 1998-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Structure describing a signal stack.
+type Stack_t = struct {
+	Fss_sp       uintptr
+	Fss_flags    int32
+	F__ccgo_pad1 [4]byte
+	Fss_size     Size_t
+} /* stack_t.h:31:5 */
+
+// This will define `ucontext_t' and `mcontext_t'.
+// struct ucontext definition, RISC-V version.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Don't rely on this, the interface is currently messed up and may need to
+//    be broken to be fixed.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define stack_t.  Linux version.
+//    Copyright (C) 1998-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+type X__riscv_mc_gp_state = [32]uint64 /* ucontext.h:29:27 */
+
+type Greg_t = uint64 /* ucontext.h:44:27 */
+
+// Container for all general registers.
+type Gregset_t = X__riscv_mc_gp_state /* ucontext.h:47:29 */
+
+// Container for floating-point state.
+type X__riscv_mc_fp_state = struct {
+	F__ccgo_pad1 [0]uint64
+	F__f         struct {
+		F__f    [32]uint32
+		F__fcsr uint32
+	}
+	F__ccgo_pad2 [396]byte
+} /* ucontext.h:50:9 */
+
+// Container for floating-point state.
+type Fpregset_t = X__riscv_mc_fp_state /* ucontext.h:50:35 */
+
+type X__riscv_mc_f_ext_state = struct {
+	F__f    [32]uint32
+	F__fcsr uint32
+} /* ucontext.h:50:9 */
+
+type X__riscv_mc_d_ext_state = struct {
+	F__f         [32]uint64
+	F__fcsr      uint32
+	F__ccgo_pad1 [4]byte
+} /* ucontext.h:50:9 */
+
+type X__riscv_mc_q_ext_state = struct {
+	F__f              [64]uint64
+	F__fcsr           uint32
+	F__glibc_reserved [3]uint32
+} /* ucontext.h:50:9 */
+
+type Mcontext_t1 = struct {
+	F__gregs  X__riscv_mc_gp_state
+	F__fpregs struct {
+		F__ccgo_pad1 [0]uint64
+		F__f         struct {
+			F__f    [32]uint32
+			F__fcsr uint32
+		}
+		F__ccgo_pad2 [396]byte
+	}
+} /* ucontext.h:81:9 */
+
+type Mcontext_t = Mcontext_t1 /* ucontext.h:85:5 */
+
+// Userlevel context.
+type Ucontext_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__uc_flags  uint64
+	Fuc_link     uintptr
+	Fuc_stack    Stack_t
+	Fuc_sigmask  Sigset_t
+	F__ccgo_pad2 [784]byte
+} /* ucontext.h:88:9 */
+
+// Userlevel context.
+type Ucontext_t = Ucontext_t1 /* ucontext.h:108:5 */
+
+// Define struct sigstack.
+//    Copyright (C) 1998-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Structure describing a signal stack (obsolete).
+type Sigstack = struct {
+	Fss_sp       uintptr
+	Fss_onstack  int32
+	F__ccgo_pad1 [4]byte
+} /* struct_sigstack.h:23:1 */
+
+// Some of the functions for handling signals in threaded programs must
+//    be defined here.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Some of the functions for handling signals in threaded programs must
+//    be defined here.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// System-specific extensions.
+// System-specific extensions of <signal.h>, Linux version.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/stdio/capi_linux_riscv64.go b/vendor/modernc.org/libc/stdio/capi_linux_riscv64.go
new file mode 100644
index 00000000..fbb39ede
--- /dev/null
+++ b/vendor/modernc.org/libc/stdio/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo stdio/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o stdio/stdio_linux_riscv64.go -pkgname stdio', DO NOT EDIT.
+
+package stdio
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/stdio/stdio_linux_riscv64.go b/vendor/modernc.org/libc/stdio/stdio_linux_riscv64.go
new file mode 100644
index 00000000..502ad77e
--- /dev/null
+++ b/vendor/modernc.org/libc/stdio/stdio_linux_riscv64.go
@@ -0,0 +1,589 @@
+// Code generated by 'ccgo stdio/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o stdio/stdio_linux_riscv64.go -pkgname stdio', DO NOT EDIT.
+
+package stdio
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	BUFSIZ                 = 8192
+	EOF                    = -1
+	FILENAME_MAX           = 4096
+	FOPEN_MAX              = 16
+	L_ctermid              = 9
+	L_tmpnam               = 20
+	P_tmpdir               = "/tmp"
+	SEEK_CUR               = 1
+	SEEK_END               = 2
+	SEEK_SET               = 0
+	TMP_MAX                = 238328
+	X_ATFILE_SOURCE        = 1
+	X_BITS_FLOATN_COMMON_H = 0
+	X_BITS_FLOATN_H        = 0
+	X_BITS_STDIO_LIM_H     = 1
+	X_BITS_TIME64_H        = 1
+	X_BITS_TYPESIZES_H     = 1
+	X_BITS_TYPES_H         = 1
+	X_BSD_SIZE_T_          = 0
+	X_BSD_SIZE_T_DEFINED_  = 0
+	X_DEFAULT_SOURCE       = 1
+	X_FEATURES_H           = 1
+	X_FILE_OFFSET_BITS     = 64
+	X_GCC_SIZE_T           = 0
+	X_IOFBF                = 0
+	X_IOLBF                = 1
+	X_IONBF                = 2
+	X_IO_EOF_SEEN          = 0x0010
+	X_IO_ERR_SEEN          = 0x0020
+	X_IO_USER_LOCK         = 0x8000
+	X_LP64                 = 1
+	X_POSIX_C_SOURCE       = 200809
+	X_POSIX_SOURCE         = 1
+	X_SIZET_               = 0
+	X_SIZE_T               = 0
+	X_SIZE_T_              = 0
+	X_SIZE_T_DECLARED      = 0
+	X_SIZE_T_DEFINED       = 0
+	X_SIZE_T_DEFINED_      = 0
+	X_STDC_PREDEF_H        = 1
+	X_STDIO_H              = 1
+	X_SYS_CDEFS_H          = 1
+	X_SYS_SIZE_T_H         = 0
+	X_T_SIZE               = 0
+	X_T_SIZE_              = 0
+	X_VA_LIST_DEFINED      = 0
+	Linux                  = 1
+	Unix                   = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.15  Variable arguments  <stdarg.h>
+
+// Define __gnuc_va_list.
+
+type X__gnuc_va_list = X__builtin_va_list /* stdarg.h:40:27 */
+
+// Define the standard macros for the user,
+//    if this invocation was from the user program.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Integral type unchanged by default argument promotions that can
+//    hold any value corresponding to members of the extended character
+//    set, as well as at least one value that does not correspond to any
+//    member of the extended character set.
+
+// Conversion state information.
+type X__mbstate_t = struct {
+	F__count int32
+	F__value struct{ F__wch uint32 }
+} /* __mbstate_t.h:21:3 */
+
+// The tag name of this struct is _G_fpos_t to preserve historic
+//    C++ mangled names for functions taking fpos_t arguments.
+//    That name should not be used in new code.
+type X_G_fpos_t = struct {
+	F__pos   X__off_t
+	F__state X__mbstate_t
+} /* __fpos_t.h:10:9 */
+
+// The tag name of this struct is _G_fpos_t to preserve historic
+//    C++ mangled names for functions taking fpos_t arguments.
+//    That name should not be used in new code.
+type X__fpos_t = X_G_fpos_t /* __fpos_t.h:14:3 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// The tag name of this struct is _G_fpos64_t to preserve historic
+//    C++ mangled names for functions taking fpos_t and/or fpos64_t
+//    arguments.  That name should not be used in new code.
+type X_G_fpos64_t = struct {
+	F__pos   X__off64_t
+	F__state X__mbstate_t
+} /* __fpos64_t.h:10:9 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// The tag name of this struct is _G_fpos64_t to preserve historic
+//    C++ mangled names for functions taking fpos_t and/or fpos64_t
+//    arguments.  That name should not be used in new code.
+type X__fpos64_t = X_G_fpos64_t /* __fpos64_t.h:14:3 */
+
+type X_IO_FILE = struct {
+	F_flags          int32
+	F__ccgo_pad1     [4]byte
+	F_IO_read_ptr    uintptr
+	F_IO_read_end    uintptr
+	F_IO_read_base   uintptr
+	F_IO_write_base  uintptr
+	F_IO_write_ptr   uintptr
+	F_IO_write_end   uintptr
+	F_IO_buf_base    uintptr
+	F_IO_buf_end     uintptr
+	F_IO_save_base   uintptr
+	F_IO_backup_base uintptr
+	F_IO_save_end    uintptr
+	F_markers        uintptr
+	F_chain          uintptr
+	F_fileno         int32
+	F_flags2         int32
+	F_old_offset     X__off_t
+	F_cur_column     uint16
+	F_vtable_offset  int8
+	F_shortbuf       [1]uint8
+	F__ccgo_pad2     [4]byte
+	F_lock           uintptr
+	F_offset         X__off64_t
+	F_codecvt        uintptr
+	F_wide_data      uintptr
+	F_freeres_list   uintptr
+	F_freeres_buf    uintptr
+	F__pad5          Size_t
+	F_mode           int32
+	F_unused2        [20]uint8
+} /* __FILE.h:4:1 */
+
+type X__FILE = X_IO_FILE /* __FILE.h:5:25 */
+
+// The opaque type of streams.  This is the definition used elsewhere.
+type FILE = X_IO_FILE /* FILE.h:7:25 */
+
+// These macros are used by bits/stdio.h and internal headers.
+
+// Many more flag bits are defined internally.
+
+type Va_list = X__gnuc_va_list /* stdio.h:52:24 */
+
+type Off_t = X__off64_t /* stdio.h:65:19 */
+
+type Ssize_t = X__ssize_t /* stdio.h:77:19 */
+
+// The type of the second argument to `fgetpos' and `fsetpos'.
+type Fpos_t = X__fpos64_t /* stdio.h:86:20 */
+
+// If we are compiling with optimizing read this file.  It contains
+//    several optimizing inline functions and macros.
+
+// Macros to control TS 18661-3 glibc features on ldbl-128 platforms.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/stdlib/capi_linux_riscv64.go b/vendor/modernc.org/libc/stdlib/capi_linux_riscv64.go
new file mode 100644
index 00000000..c464fb91
--- /dev/null
+++ b/vendor/modernc.org/libc/stdlib/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo stdlib/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o stdlib/stdlib_linux_riscv64.go -pkgname stdlib', DO NOT EDIT.
+
+package stdlib
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/stdlib/stdlib_linux_riscv64.go b/vendor/modernc.org/libc/stdlib/stdlib_linux_riscv64.go
new file mode 100644
index 00000000..532565b6
--- /dev/null
+++ b/vendor/modernc.org/libc/stdlib/stdlib_linux_riscv64.go
@@ -0,0 +1,1591 @@
+// Code generated by 'ccgo stdlib/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o stdlib/stdlib_linux_riscv64.go -pkgname stdlib', DO NOT EDIT.
+
+package stdlib
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	BIG_ENDIAN                   = 4321
+	BYTE_ORDER                   = 1234
+	EXIT_FAILURE                 = 1
+	EXIT_SUCCESS                 = 0
+	FD_SETSIZE                   = 1024
+	LITTLE_ENDIAN                = 1234
+	PDP_ENDIAN                   = 3412
+	RAND_MAX                     = 2147483647
+	WCONTINUED                   = 8
+	WEXITED                      = 4
+	WNOHANG                      = 1
+	WNOWAIT                      = 0x01000000
+	WSTOPPED                     = 2
+	WUNTRACED                    = 2
+	X_ALLOCA_H                   = 1
+	X_ATFILE_SOURCE              = 1
+	X_BITS_BYTESWAP_H            = 1
+	X_BITS_ENDIANNESS_H          = 1
+	X_BITS_ENDIAN_H              = 1
+	X_BITS_FLOATN_COMMON_H       = 0
+	X_BITS_FLOATN_H              = 0
+	X_BITS_PTHREADTYPES_ARCH_H   = 1
+	X_BITS_PTHREADTYPES_COMMON_H = 1
+	X_BITS_STDINT_INTN_H         = 1
+	X_BITS_TIME64_H              = 1
+	X_BITS_TYPESIZES_H           = 1
+	X_BITS_TYPES_H               = 1
+	X_BITS_UINTN_IDENTITY_H      = 1
+	X_BSD_SIZE_T_                = 0
+	X_BSD_SIZE_T_DEFINED_        = 0
+	X_DEFAULT_SOURCE             = 1
+	X_ENDIAN_H                   = 1
+	X_FEATURES_H                 = 1
+	X_FILE_OFFSET_BITS           = 64
+	X_GCC_SIZE_T                 = 0
+	X_GCC_WCHAR_T                = 0
+	X_LP64                       = 1
+	X_POSIX_C_SOURCE             = 200809
+	X_POSIX_SOURCE               = 1
+	X_RWLOCK_INTERNAL_H          = 0
+	X_SIZET_                     = 0
+	X_SIZE_T                     = 0
+	X_SIZE_T_                    = 0
+	X_SIZE_T_DECLARED            = 0
+	X_SIZE_T_DEFINED             = 0
+	X_SIZE_T_DEFINED_            = 0
+	X_STDC_PREDEF_H              = 1
+	X_STDLIB_H                   = 1
+	X_STRUCT_TIMESPEC            = 1
+	X_SYS_CDEFS_H                = 1
+	X_SYS_SELECT_H               = 1
+	X_SYS_SIZE_T_H               = 0
+	X_SYS_TYPES_H                = 1
+	X_THREAD_MUTEX_INTERNAL_H    = 1
+	X_THREAD_SHARED_TYPES_H      = 1
+	X_T_SIZE                     = 0
+	X_T_SIZE_                    = 0
+	X_T_WCHAR                    = 0
+	X_T_WCHAR_                   = 0
+	X_WCHAR_T                    = 0
+	X_WCHAR_T_                   = 0
+	X_WCHAR_T_DECLARED           = 0
+	X_WCHAR_T_DEFINED            = 0
+	X_WCHAR_T_DEFINED_           = 0
+	X_WCHAR_T_H                  = 0
+	Linux                        = 1
+	Unix                         = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// A null pointer constant.
+
+// XPG requires a few symbols from <sys/wait.h> being defined.
+// Definitions of flag bits for `waitpid' et al.
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bits in the third argument to `waitpid'.
+
+// Bits in the fourth argument to `waitid'.
+
+// Definitions of status bits for `wait' et al.
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Everything extant so far uses these same bits.
+
+// If WIFEXITED(STATUS), the low-order 8 bits of the status.
+
+// If WIFSIGNALED(STATUS), the terminating signal.
+
+// If WIFSTOPPED(STATUS), the signal that stopped the child.
+
+// Nonzero if STATUS indicates normal termination.
+
+// Nonzero if STATUS indicates termination by a signal.
+
+// Nonzero if STATUS indicates the child is stopped.
+
+// Nonzero if STATUS indicates the child continued after a stop.  We only
+//    define this if <bits/waitflags.h> provides the WCONTINUED flag bit.
+
+// Nonzero if STATUS indicates the child dumped core.
+
+// Macros for constructing status values.
+
+// Define the macros <sys/wait.h> also would define this way.
+
+// _FloatN API tests for enablement.
+// Macros to control TS 18661-3 glibc features on ldbl-128 platforms.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// Defined to 1 if the current compiler invocation provides a
+//    floating-point type with the IEEE 754 binary128 format, and this
+//    glibc includes corresponding *f128 interfaces for it.
+
+// Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
+//    from the default float, double and long double types in this glibc.
+
+// Defined to 1 if the current compiler invocation provides a
+//    floating-point type with the right format for _Float64x, and this
+//    glibc includes corresponding *f64x interfaces for it.
+
+// Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
+//    of long double.  Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
+//    the format of _Float128, which must be different from that of long
+//    double.
+
+// Defined to concatenate the literal suffix to be used with _Float128
+//    types, if __HAVE_FLOAT128 is 1.
+
+// Defined to a complex binary128 type if __HAVE_FLOAT128 is 1.
+
+// The remaining of this file provides support for older compilers.
+
+// The type _Float128 exists only since GCC 7.0.
+
+// Various built-in functions do not exist before GCC 7.0.
+
+// Macros to control TS 18661-3 glibc features where the same
+//    definitions are appropriate for all platforms.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// This header should be included at the bottom of each bits/floatn.h.
+//    It defines the following macros for each _FloatN and _FloatNx type,
+//    where the same definitions, or definitions based only on the macros
+//    in bits/floatn.h, are appropriate for all glibc configurations.
+
+// Defined to 1 if the current compiler invocation provides a
+//    floating-point type with the right format for this type, and this
+//    glibc includes corresponding *fN or *fNx interfaces for it.
+
+// Defined to 1 if the corresponding __HAVE_<type> macro is 1 and the
+//    type is the first with its format in the sequence of (the default
+//    choices for) float, double, long double, _Float16, _Float32,
+//    _Float64, _Float128, _Float32x, _Float64x, _Float128x for this
+//    glibc; that is, if functions present once per floating-point format
+//    rather than once per type are present for this type.
+//
+//    All configurations supported by glibc have _Float32 the same format
+//    as float, _Float64 and _Float32x the same format as double, the
+//    _Float64x the same format as either long double or _Float128.  No
+//    configurations support _Float128x or, as of GCC 7, have compiler
+//    support for a type meeting the requirements for _Float128x.
+
+// Defined to 1 if the corresponding _FloatN type is not binary compatible
+//    with the corresponding ISO C type in the current compilation unit as
+//    opposed to __HAVE_DISTINCT_FLOATN, which indicates the default types built
+//    in glibc.
+
+// Defined to 1 if any _FloatN or _FloatNx types that are not
+//    ABI-distinct are however distinct types at the C language level (so
+//    for the purposes of __builtin_types_compatible_p and _Generic).
+
+// Defined to concatenate the literal suffix to be used with _FloatN
+//    or _FloatNx types, if __HAVE_<type> is 1.  The corresponding
+//    literal suffixes exist since GCC 7, for C only.
+
+// Defined to a complex type if __HAVE_<type> is 1.
+
+// The remaining of this file provides support for older compilers.
+
+// If double, long double and _Float64 all have the same set of
+//    values, TS 18661-3 requires the usual arithmetic conversions on
+//    long double and _Float64 to produce _Float64.  For this to be the
+//    case when building with a compiler without a distinct _Float64
+//    type, _Float64 must be a typedef for long double, not for
+//    double.
+
+// Returned by `div'.
+type Div_t = struct {
+	Fquot int32
+	Frem  int32
+} /* stdlib.h:62:5 */
+
+// Returned by `ldiv'.
+type Ldiv_t = struct {
+	Fquot int64
+	Frem  int64
+} /* stdlib.h:70:5 */
+
+// Returned by `lldiv'.
+type Lldiv_t = struct {
+	Fquot int64
+	Frem  int64
+} /* stdlib.h:80:5 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint64  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We don't use `memset' because this would require a prototype and
+//    the array isn't too big.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//    microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int64 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [16]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// Reentrant versions of the `random' family of functions.
+//    These functions all use the following data structure to contain
+//    state, rather than global state variables.
+
+type Random_data = struct {
+	Ffptr        uintptr
+	Frptr        uintptr
+	Fstate       uintptr
+	Frand_type   int32
+	Frand_deg    int32
+	Frand_sep    int32
+	F__ccgo_pad1 [4]byte
+	Fend_ptr     uintptr
+} /* stdlib.h:423:1 */
+
+// Data structure for communication with thread safe versions.  This
+//    type is to be regarded as opaque.  It's only exported because users
+//    have to allocate objects of this type.
+type Drand48_data = struct {
+	F__x     [3]uint16
+	F__old_x [3]uint16
+	F__c     uint16
+	F__init  uint16
+	F__a     uint64
+} /* stdlib.h:490:1 */
+
+// Shorthand for type of comparison functions.
+type X__compar_fn_t = uintptr /* stdlib.h:814:13 */
+
+// Floating-point inline functions for stdlib.h.
+//    Copyright (C) 2012-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define some macros helping to catch buffer overflows.
+
+// Macros to control TS 18661-3 glibc features on ldbl-128 platforms.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/sys/socket/capi_linux_riscv64.go b/vendor/modernc.org/libc/sys/socket/capi_linux_riscv64.go
new file mode 100644
index 00000000..9fbf0ece
--- /dev/null
+++ b/vendor/modernc.org/libc/sys/socket/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo sys/socket/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o sys/socket/socket_linux_riscv64.go -pkgname socket', DO NOT EDIT.
+
+package socket
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/sys/socket/socket_linux_riscv64.go b/vendor/modernc.org/libc/sys/socket/socket_linux_riscv64.go
new file mode 100644
index 00000000..c685bf6d
--- /dev/null
+++ b/vendor/modernc.org/libc/sys/socket/socket_linux_riscv64.go
@@ -0,0 +1,1909 @@
+// Code generated by 'ccgo sys/socket/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o sys/socket/socket_linux_riscv64.go -pkgname socket', DO NOT EDIT.
+
+package socket
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	AF_ALG                           = 38
+	AF_APPLETALK                     = 5
+	AF_ASH                           = 18
+	AF_ATMPVC                        = 8
+	AF_ATMSVC                        = 20
+	AF_AX25                          = 3
+	AF_BLUETOOTH                     = 31
+	AF_BRIDGE                        = 7
+	AF_CAIF                          = 37
+	AF_CAN                           = 29
+	AF_DECnet                        = 12
+	AF_ECONET                        = 19
+	AF_FILE                          = 1
+	AF_IB                            = 27
+	AF_IEEE802154                    = 36
+	AF_INET                          = 2
+	AF_INET6                         = 10
+	AF_IPX                           = 4
+	AF_IRDA                          = 23
+	AF_ISDN                          = 34
+	AF_IUCV                          = 32
+	AF_KCM                           = 41
+	AF_KEY                           = 15
+	AF_LLC                           = 26
+	AF_LOCAL                         = 1
+	AF_MAX                           = 45
+	AF_MPLS                          = 28
+	AF_NETBEUI                       = 13
+	AF_NETLINK                       = 16
+	AF_NETROM                        = 6
+	AF_NFC                           = 39
+	AF_PACKET                        = 17
+	AF_PHONET                        = 35
+	AF_PPPOX                         = 24
+	AF_QIPCRTR                       = 42
+	AF_RDS                           = 21
+	AF_ROSE                          = 11
+	AF_ROUTE                         = 16
+	AF_RXRPC                         = 33
+	AF_SECURITY                      = 14
+	AF_SMC                           = 43
+	AF_SNA                           = 22
+	AF_TIPC                          = 30
+	AF_UNIX                          = 1
+	AF_UNSPEC                        = 0
+	AF_VSOCK                         = 40
+	AF_WANPIPE                       = 25
+	AF_X25                           = 9
+	AF_XDP                           = 44
+	BIG_ENDIAN                       = 4321
+	BYTE_ORDER                       = 1234
+	FD_SETSIZE                       = 1024
+	FIOGETOWN                        = 0x8903
+	FIOSETOWN                        = 0x8901
+	LITTLE_ENDIAN                    = 1234
+	PDP_ENDIAN                       = 3412
+	PF_ALG                           = 38
+	PF_APPLETALK                     = 5
+	PF_ASH                           = 18
+	PF_ATMPVC                        = 8
+	PF_ATMSVC                        = 20
+	PF_AX25                          = 3
+	PF_BLUETOOTH                     = 31
+	PF_BRIDGE                        = 7
+	PF_CAIF                          = 37
+	PF_CAN                           = 29
+	PF_DECnet                        = 12
+	PF_ECONET                        = 19
+	PF_FILE                          = 1
+	PF_IB                            = 27
+	PF_IEEE802154                    = 36
+	PF_INET                          = 2
+	PF_INET6                         = 10
+	PF_IPX                           = 4
+	PF_IRDA                          = 23
+	PF_ISDN                          = 34
+	PF_IUCV                          = 32
+	PF_KCM                           = 41
+	PF_KEY                           = 15
+	PF_LLC                           = 26
+	PF_LOCAL                         = 1
+	PF_MAX                           = 45
+	PF_MPLS                          = 28
+	PF_NETBEUI                       = 13
+	PF_NETLINK                       = 16
+	PF_NETROM                        = 6
+	PF_NFC                           = 39
+	PF_PACKET                        = 17
+	PF_PHONET                        = 35
+	PF_PPPOX                         = 24
+	PF_QIPCRTR                       = 42
+	PF_RDS                           = 21
+	PF_ROSE                          = 11
+	PF_ROUTE                         = 16
+	PF_RXRPC                         = 33
+	PF_SECURITY                      = 14
+	PF_SMC                           = 43
+	PF_SNA                           = 22
+	PF_TIPC                          = 30
+	PF_UNIX                          = 1
+	PF_UNSPEC                        = 0
+	PF_VSOCK                         = 40
+	PF_WANPIPE                       = 25
+	PF_X25                           = 9
+	PF_XDP                           = 44
+	SCM_TIMESTAMP                    = 29
+	SCM_TIMESTAMPING                 = 37
+	SCM_TIMESTAMPING_OPT_STATS       = 54
+	SCM_TIMESTAMPING_PKTINFO         = 58
+	SCM_TIMESTAMPNS                  = 35
+	SCM_TXTIME                       = 61
+	SCM_WIFI_STATUS                  = 41
+	SIOCATMARK                       = 0x8905
+	SIOCGPGRP                        = 0x8904
+	SIOCGSTAMPNS_OLD                 = 0x8907
+	SIOCGSTAMP_OLD                   = 0x8906
+	SIOCSPGRP                        = 0x8902
+	SOL_AAL                          = 265
+	SOL_ALG                          = 279
+	SOL_ATM                          = 264
+	SOL_BLUETOOTH                    = 274
+	SOL_CAIF                         = 278
+	SOL_DCCP                         = 269
+	SOL_DECNET                       = 261
+	SOL_IRDA                         = 266
+	SOL_IUCV                         = 277
+	SOL_KCM                          = 281
+	SOL_LLC                          = 268
+	SOL_NETBEUI                      = 267
+	SOL_NETLINK                      = 270
+	SOL_NFC                          = 280
+	SOL_PACKET                       = 263
+	SOL_PNPIPE                       = 275
+	SOL_PPPOL2TP                     = 273
+	SOL_RAW                          = 255
+	SOL_RDS                          = 276
+	SOL_RXRPC                        = 272
+	SOL_SOCKET                       = 1
+	SOL_TIPC                         = 271
+	SOL_TLS                          = 282
+	SOL_X25                          = 262
+	SOL_XDP                          = 283
+	SOMAXCONN                        = 4096
+	SO_ACCEPTCONN                    = 30
+	SO_ATTACH_BPF                    = 50
+	SO_ATTACH_FILTER                 = 26
+	SO_ATTACH_REUSEPORT_CBPF         = 51
+	SO_ATTACH_REUSEPORT_EBPF         = 52
+	SO_BINDTODEVICE                  = 25
+	SO_BINDTOIFINDEX                 = 62
+	SO_BPF_EXTENSIONS                = 48
+	SO_BROADCAST                     = 6
+	SO_BSDCOMPAT                     = 14
+	SO_BUSY_POLL                     = 46
+	SO_BUSY_POLL_BUDGET              = 70
+	SO_CNX_ADVICE                    = 53
+	SO_COOKIE                        = 57
+	SO_DEBUG                         = 1
+	SO_DETACH_BPF                    = 27
+	SO_DETACH_FILTER                 = 27
+	SO_DETACH_REUSEPORT_BPF          = 68
+	SO_DOMAIN                        = 39
+	SO_DONTROUTE                     = 5
+	SO_ERROR                         = 4
+	SO_GET_FILTER                    = 26
+	SO_INCOMING_CPU                  = 49
+	SO_INCOMING_NAPI_ID              = 56
+	SO_KEEPALIVE                     = 9
+	SO_LINGER                        = 13
+	SO_LOCK_FILTER                   = 44
+	SO_MARK                          = 36
+	SO_MAX_PACING_RATE               = 47
+	SO_MEMINFO                       = 55
+	SO_NETNS_COOKIE                  = 71
+	SO_NOFCS                         = 43
+	SO_NO_CHECK                      = 11
+	SO_OOBINLINE                     = 10
+	SO_PASSCRED                      = 16
+	SO_PASSSEC                       = 34
+	SO_PEEK_OFF                      = 42
+	SO_PEERCRED                      = 17
+	SO_PEERGROUPS                    = 59
+	SO_PEERNAME                      = 28
+	SO_PEERSEC                       = 31
+	SO_PREFER_BUSY_POLL              = 69
+	SO_PRIORITY                      = 12
+	SO_PROTOCOL                      = 38
+	SO_RCVBUF                        = 8
+	SO_RCVBUFFORCE                   = 33
+	SO_RCVLOWAT                      = 18
+	SO_RCVTIMEO                      = 20
+	SO_RCVTIMEO_NEW                  = 66
+	SO_RCVTIMEO_OLD                  = 20
+	SO_REUSEADDR                     = 2
+	SO_REUSEPORT                     = 15
+	SO_RXQ_OVFL                      = 40
+	SO_SECURITY_AUTHENTICATION       = 22
+	SO_SECURITY_ENCRYPTION_NETWORK   = 24
+	SO_SECURITY_ENCRYPTION_TRANSPORT = 23
+	SO_SELECT_ERR_QUEUE              = 45
+	SO_SNDBUF                        = 7
+	SO_SNDBUFFORCE                   = 32
+	SO_SNDLOWAT                      = 19
+	SO_SNDTIMEO                      = 21
+	SO_SNDTIMEO_NEW                  = 67
+	SO_SNDTIMEO_OLD                  = 21
+	SO_TIMESTAMP                     = 29
+	SO_TIMESTAMPING                  = 37
+	SO_TIMESTAMPING_NEW              = 65
+	SO_TIMESTAMPING_OLD              = 37
+	SO_TIMESTAMPNS                   = 35
+	SO_TIMESTAMPNS_NEW               = 64
+	SO_TIMESTAMPNS_OLD               = 35
+	SO_TIMESTAMP_NEW                 = 63
+	SO_TIMESTAMP_OLD                 = 29
+	SO_TXTIME                        = 61
+	SO_TYPE                          = 3
+	SO_WIFI_STATUS                   = 41
+	SO_ZEROCOPY                      = 60
+	X_ASM_RISCV_BITSPERLONG_H        = 0
+	X_ATFILE_SOURCE                  = 1
+	X_BITS_BYTESWAP_H                = 1
+	X_BITS_ENDIANNESS_H              = 1
+	X_BITS_ENDIAN_H                  = 1
+	X_BITS_PTHREADTYPES_ARCH_H       = 1
+	X_BITS_PTHREADTYPES_COMMON_H     = 1
+	X_BITS_SOCKADDR_H                = 1
+	X_BITS_STDINT_INTN_H             = 1
+	X_BITS_TIME64_H                  = 1
+	X_BITS_TYPESIZES_H               = 1
+	X_BITS_TYPES_H                   = 1
+	X_BITS_UINTN_IDENTITY_H          = 1
+	X_BSD_SIZE_T_                    = 0
+	X_BSD_SIZE_T_DEFINED_            = 0
+	X_DEFAULT_SOURCE                 = 1
+	X_ENDIAN_H                       = 1
+	X_FEATURES_H                     = 1
+	X_FILE_OFFSET_BITS               = 64
+	X_GCC_SIZE_T                     = 0
+	X_LINUX_POSIX_TYPES_H            = 0
+	X_LP64                           = 1
+	X_POSIX_C_SOURCE                 = 200809
+	X_POSIX_SOURCE                   = 1
+	X_RWLOCK_INTERNAL_H              = 0
+	X_SIZET_                         = 0
+	X_SIZE_T                         = 0
+	X_SIZE_T_                        = 0
+	X_SIZE_T_DECLARED                = 0
+	X_SIZE_T_DEFINED                 = 0
+	X_SIZE_T_DEFINED_                = 0
+	X_SS_SIZE                        = 128
+	X_STDC_PREDEF_H                  = 1
+	X_STRUCT_TIMESPEC                = 1
+	X_SYS_CDEFS_H                    = 1
+	X_SYS_SELECT_H                   = 1
+	X_SYS_SIZE_T_H                   = 0
+	X_SYS_SOCKET_H                   = 1
+	X_SYS_TYPES_H                    = 1
+	X_THREAD_MUTEX_INTERNAL_H        = 1
+	X_THREAD_SHARED_TYPES_H          = 1
+	X_T_SIZE                         = 0
+	X_T_SIZE_                        = 0
+	Linux                            = 1
+	Unix                             = 1
+)
+
+// Bits in the FLAGS argument to `send', `recv', et al.
+const ( /* socket.h:200:1: */
+	MSG_OOB        = 1  // Process out-of-band data.
+	MSG_PEEK       = 2  // Peek at incoming messages.
+	MSG_DONTROUTE  = 4  // Don't use local routing.
+	MSG_CTRUNC     = 8  // Control data lost before delivery.
+	MSG_PROXY      = 16 // Supply or ask second address.
+	MSG_TRUNC      = 32
+	MSG_DONTWAIT   = 64  // Nonblocking IO.
+	MSG_EOR        = 128 // End of record.
+	MSG_WAITALL    = 256 // Wait for a full request.
+	MSG_FIN        = 512
+	MSG_SYN        = 1024
+	MSG_CONFIRM    = 2048 // Confirm path validity.
+	MSG_RST        = 4096
+	MSG_ERRQUEUE   = 8192      // Fetch message from error queue.
+	MSG_NOSIGNAL   = 16384     // Do not generate SIGPIPE.
+	MSG_MORE       = 32768     // Sender will send more.
+	MSG_WAITFORONE = 65536     // Wait for at least one packet to return.
+	MSG_BATCH      = 262144    // sendmmsg: more messages coming.
+	MSG_ZEROCOPY   = 67108864  // Use user data in kernel path.
+	MSG_FASTOPEN   = 536870912 // Send data in TCP SYN.
+
+	MSG_CMSG_CLOEXEC = 1073741824
+)
+
+// Socket level message types.  This must match the definitions in
+//    <linux/socket.h>.
+const ( /* socket.h:332:1: */
+	SCM_RIGHTS = 1
+)
+
+// Get the architecture-dependent definition of enum __socket_type.
+// Define enum __socket_type for generic Linux.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Types of sockets.
+const ( /* socket_type.h:24:1: */
+	SOCK_STREAM = 1 // Sequenced, reliable, connection-based
+	// 				   byte streams.
+	SOCK_DGRAM = 2 // Connectionless, unreliable datagrams
+	// 				   of fixed maximum length.
+	SOCK_RAW       = 3 // Raw protocol interface.
+	SOCK_RDM       = 4 // Reliably-delivered messages.
+	SOCK_SEQPACKET = 5 // Sequenced, reliable, connection-based,
+	// 				   datagrams of fixed maximum length.
+	SOCK_DCCP   = 6  // Datagram Congestion Control Protocol.
+	SOCK_PACKET = 10 // Linux specific way of getting packets
+	// 				   at the dev level.  For writing rarp and
+	// 				   other similar things on the user level.
+
+	// Flags to be ORed into the type parameter of socket and socketpair and
+	//      used for the flags parameter of paccept.
+
+	SOCK_CLOEXEC = 524288 // Atomically set close-on-exec flag for the
+	// 				   new descriptor(s).
+	SOCK_NONBLOCK = 2048
+)
+
+// The following constants should be used for the second parameter of
+//    `shutdown'.
+const ( /* socket.h:41:1: */
+	SHUT_RD   = 0 // No more receptions.
+	SHUT_WR   = 1 // No more transmissions.
+	SHUT_RDWR = 2
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Structure for scatter/gather I/O.
+type Iovec = struct {
+	Fiov_base uintptr
+	Fiov_len  Size_t
+} /* struct_iovec.h:26:1 */
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// This operating system-specific header file defines the SOCK_*, PF_*,
+//    AF_*, MSG_*, SOL_*, and SO_* constants, and the `struct sockaddr',
+//    `struct msghdr', and `struct linger' types.
+// System-specific socket constants and types.  Linux version.
+//    Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Copyright (C) 1989-2021 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint64  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We don't use `memset' because this would require a prototype and
+//    the array isn't too big.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//    microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int64 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [16]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+// Type for length arguments in socket calls.
+type Socklen_t = X__socklen_t /* socket.h:33:21 */
+
+// Protocol families.
+
+// Address families.
+
+// Socket level values.  Others are defined in the appropriate headers.
+//
+//    XXX These definitions also should go into the appropriate headers as
+//    far as they are available.
+
+// Maximum queue length specifiable by listen.
+
+// Get the definition of the macro to define the common sockaddr members.
+// Definition of struct sockaddr_* common members and sizes, generic version.
+//    Copyright (C) 1995-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/socket.h> instead.
+
+// POSIX.1g specifies this type name for the `sa_family' member.
+type Sa_family_t = uint16 /* sockaddr.h:28:28 */
+
+// This macro is used to declare the initial common members
+//    of the data types used for socket addresses, `struct sockaddr',
+//    `struct sockaddr_in', `struct sockaddr_un', etc.
+
+// Size of struct sockaddr_storage.
+
+// Structure describing a generic socket address.
+type Sockaddr = struct {
+	Fsa_family Sa_family_t
+	Fsa_data   [14]uint8
+} /* socket.h:178:1 */
+
+// Structure large enough to hold any socket address (with the historical
+//    exception of AF_UNIX).
+
+type Sockaddr_storage = struct {
+	Fss_family    Sa_family_t
+	F__ss_padding [118]uint8
+	F__ss_align   uint64
+} /* socket.h:191:1 */
+
+// Structure describing messages sent by
+//    `sendmsg' and received by `recvmsg'.
+type Msghdr = struct {
+	Fmsg_name       uintptr
+	Fmsg_namelen    Socklen_t
+	F__ccgo_pad1    [4]byte
+	Fmsg_iov        uintptr
+	Fmsg_iovlen     Size_t
+	Fmsg_control    uintptr
+	Fmsg_controllen Size_t
+	Fmsg_flags      int32
+	F__ccgo_pad2    [4]byte
+} /* socket.h:257:1 */
+
+// Structure used for storage of ancillary data object information.
+type Cmsghdr = struct {
+	F__ccgo_pad1 [0]uint64
+	Fcmsg_len    Size_t
+	Fcmsg_level  int32
+	Fcmsg_type   int32
+} /* socket.h:275:1 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// This allows for 1024 file descriptors: if NR_OPEN is ever grown
+// beyond that you'll have to change this too. But 1024 fd's seem to be
+// enough even for such "real" unices like OSF/1, so hopefully this is
+// one limit that doesn't have to be changed [again].
+//
+// Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
+// <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
+// place for them. Solved by having dummy defines in <sys/time.h>.
+
+// This macro may have been defined in <gnu/types.h>. But we always
+// use the one here.
+
+type X__kernel_fd_set = struct{ Ffds_bits [16]uint64 } /* posix_types.h:27:3 */
+
+// Type of a signal handler.
+type X__kernel_sighandler_t = uintptr /* posix_types.h:30:14 */
+
+// Type of a SYSV IPC key.
+type X__kernel_key_t = int32 /* posix_types.h:33:13 */
+type X__kernel_mqd_t = int32 /* posix_types.h:34:13 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note
+// Copyright (C) 2012 ARM Ltd.
+// Copyright (C) 2015 Regents of the University of California
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// There seems to be no way of detecting this automatically from user
+// space, so 64 bit architectures should override this in their
+// bitsperlong.h. In particular, an architecture that supports
+// both 32 and 64 bit user space must not rely on CONFIG_64BIT
+// to decide it, but rather check a compiler provided macro.
+
+// This file is generally used by user-level software, so you need to
+// be a little careful about namespace pollution etc.
+//
+// First the types that are often defined in different ways across
+// architectures, so that you can override them.
+
+type X__kernel_long_t = int64   /* posix_types.h:15:15 */
+type X__kernel_ulong_t = uint64 /* posix_types.h:16:23 */
+
+type X__kernel_ino_t = X__kernel_ulong_t /* posix_types.h:20:26 */
+
+type X__kernel_mode_t = uint32 /* posix_types.h:24:22 */
+
+type X__kernel_pid_t = int32 /* posix_types.h:28:14 */
+
+type X__kernel_ipc_pid_t = int32 /* posix_types.h:32:14 */
+
+type X__kernel_uid_t = uint32 /* posix_types.h:36:22 */
+type X__kernel_gid_t = uint32 /* posix_types.h:37:22 */
+
+type X__kernel_suseconds_t = X__kernel_long_t /* posix_types.h:41:26 */
+
+type X__kernel_daddr_t = int32 /* posix_types.h:45:14 */
+
+type X__kernel_uid32_t = uint32 /* posix_types.h:49:22 */
+type X__kernel_gid32_t = uint32 /* posix_types.h:50:22 */
+
+type X__kernel_old_uid_t = X__kernel_uid_t /* posix_types.h:54:24 */
+type X__kernel_old_gid_t = X__kernel_gid_t /* posix_types.h:55:24 */
+
+type X__kernel_old_dev_t = uint32 /* posix_types.h:59:22 */
+
+// Most 32 bit architectures use "unsigned int" size_t,
+// and all 64 bit architectures use "unsigned long" size_t.
+type X__kernel_size_t = X__kernel_ulong_t   /* posix_types.h:72:26 */
+type X__kernel_ssize_t = X__kernel_long_t   /* posix_types.h:73:25 */
+type X__kernel_ptrdiff_t = X__kernel_long_t /* posix_types.h:74:25 */
+
+type X__kernel_fsid_t = struct{ Fval [2]int32 } /* posix_types.h:81:3 */
+
+// anything below here should be completely generic
+type X__kernel_off_t = X__kernel_long_t      /* posix_types.h:87:25 */
+type X__kernel_loff_t = int64                /* posix_types.h:88:19 */
+type X__kernel_old_time_t = X__kernel_long_t /* posix_types.h:89:25 */
+type X__kernel_time_t = X__kernel_long_t     /* posix_types.h:90:25 */
+type X__kernel_time64_t = int64              /* posix_types.h:91:19 */
+type X__kernel_clock_t = X__kernel_long_t    /* posix_types.h:92:25 */
+type X__kernel_timer_t = int32               /* posix_types.h:93:14 */
+type X__kernel_clockid_t = int32             /* posix_types.h:94:14 */
+type X__kernel_caddr_t = uintptr             /* posix_types.h:95:14 */
+type X__kernel_uid16_t = uint16              /* posix_types.h:96:24 */
+type X__kernel_gid16_t = uint16              /* posix_types.h:97:24 */
+
+// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+// Socket-level I/O control calls.
+
+// For setsockopt(2)
+
+// Security levels - as per NRL IPv6 - don't actually do anything
+
+// Socket filtering
+
+// Instruct lower device to use last 4-bytes of skb data as FCS
+
+// on 64-bit and x32, avoid the ?: operator
+
+// Structure used to manipulate the SO_LINGER option.
+type Linger = struct {
+	Fl_onoff  int32
+	Fl_linger int32
+} /* socket.h:361:1 */
+
+// This is the 4.3 BSD `struct sockaddr' format, which is used as wire
+//    format in the grotty old 4.3 `talk' protocol.
+type Osockaddr = struct {
+	Fsa_family uint16
+	Fsa_data   [14]uint8
+} /* struct_osockaddr.h:6:1 */
+
+// Define some macros helping to catch buffer overflows.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/sys/stat/capi_linux_riscv64.go b/vendor/modernc.org/libc/sys/stat/capi_linux_riscv64.go
new file mode 100644
index 00000000..17c10084
--- /dev/null
+++ b/vendor/modernc.org/libc/sys/stat/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo sys/stat/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o sys/stat/stat_linux_riscv64.go -pkgname stat', DO NOT EDIT.
+
+package stat
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/sys/stat/stat_linux_riscv64.go b/vendor/modernc.org/libc/sys/stat/stat_linux_riscv64.go
new file mode 100644
index 00000000..edf9167e
--- /dev/null
+++ b/vendor/modernc.org/libc/sys/stat/stat_linux_riscv64.go
@@ -0,0 +1,1163 @@
+// Code generated by 'ccgo sys/stat/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o sys/stat/stat_linux_riscv64.go -pkgname stat', DO NOT EDIT.
+
+package stat
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	ACCESSPERMS          = 511
+	ALLPERMS             = 4095
+	DEFFILEMODE          = 438
+	S_BLKSIZE            = 512
+	S_IEXEC              = 64
+	S_IFBLK              = 24576
+	S_IFCHR              = 8192
+	S_IFDIR              = 16384
+	S_IFIFO              = 4096
+	S_IFLNK              = 40960
+	S_IFMT               = 61440
+	S_IFREG              = 32768
+	S_IFSOCK             = 49152
+	S_IREAD              = 256
+	S_IRGRP              = 32
+	S_IROTH              = 4
+	S_IRUSR              = 256
+	S_IRWXG              = 56
+	S_IRWXO              = 7
+	S_IRWXU              = 448
+	S_ISGID              = 1024
+	S_ISUID              = 2048
+	S_ISVTX              = 512
+	S_IWGRP              = 16
+	S_IWOTH              = 2
+	S_IWRITE             = 128
+	S_IWUSR              = 128
+	S_IXGRP              = 8
+	S_IXOTH              = 1
+	S_IXUSR              = 64
+	UTIME_NOW            = 1073741823
+	UTIME_OMIT           = 1073741822
+	X_ATFILE_SOURCE      = 1
+	X_BITS_ENDIANNESS_H  = 1
+	X_BITS_ENDIAN_H      = 1
+	X_BITS_STAT_H        = 1
+	X_BITS_STRUCT_STAT_H = 1
+	X_BITS_TIME64_H      = 1
+	X_BITS_TYPESIZES_H   = 1
+	X_BITS_TYPES_H       = 1
+	X_DEFAULT_SOURCE     = 1
+	X_FEATURES_H         = 1
+	X_FILE_OFFSET_BITS   = 64
+	X_LP64               = 1
+	X_POSIX_C_SOURCE     = 200809
+	X_POSIX_SOURCE       = 1
+	X_STATBUF_ST_BLKSIZE = 0
+	X_STATBUF_ST_NSEC    = 0
+	X_STATBUF_ST_RDEV    = 0
+	X_STDC_PREDEF_H      = 1
+	X_STRUCT_TIMESPEC    = 1
+	X_SYS_CDEFS_H        = 1
+	X_SYS_STAT_H         = 1
+	Linux                = 1
+	Unix                 = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 5.6 File Characteristics	<sys/stat.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Definitions for byte order, according to significance of bytes,
+//    from low addresses to high addresses.  The value is what you get by
+//    putting '4' in the most significant byte, '3' in the second most
+//    significant byte, '2' in the second least significant byte, and '1'
+//    in the least significant byte, and then writing down one digit for
+//    each byte, starting with the byte at the lowest address at the left,
+//    and proceeding to the byte with the highest address at the right.
+
+// This file defines `__BYTE_ORDER' for the particular machine.
+
+// RISC-V is little-endian.
+
+// Some machines may need to use a different endianness for floating point
+//    values.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+// The Single Unix specification says that some more types are
+//    available here.
+
+type Dev_t = X__dev_t /* stat.h:40:17 */
+
+type Gid_t = X__gid_t /* stat.h:45:17 */
+
+type Ino_t = X__ino64_t /* stat.h:53:19 */
+
+type Mode_t = X__mode_t /* stat.h:59:18 */
+
+type Nlink_t = X__nlink_t /* stat.h:64:19 */
+
+type Off_t = X__off64_t /* stat.h:72:19 */
+
+type Uid_t = X__uid_t /* stat.h:78:17 */
+
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition for struct stat.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+type Stat = struct {
+	Fst_dev     X__dev_t
+	Fst_ino     X__ino64_t
+	Fst_mode    X__mode_t
+	Fst_nlink   X__nlink_t
+	Fst_uid     X__uid_t
+	Fst_gid     X__gid_t
+	Fst_rdev    X__dev_t
+	F__pad1     X__dev_t
+	Fst_size    X__off64_t
+	Fst_blksize X__blksize_t
+	F__pad2     int32
+	Fst_blocks  X__blkcnt64_t
+	Fst_atim    struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fst_mtim struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fst_ctim struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	F__glibc_reserved [2]int32
+} /* struct_stat.h:44:1 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/sys/types/capi_linux_riscv64.go b/vendor/modernc.org/libc/sys/types/capi_linux_riscv64.go
new file mode 100644
index 00000000..2fb48ebc
--- /dev/null
+++ b/vendor/modernc.org/libc/sys/types/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo sys/types/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o sys/types/types_linux_riscv64.go -pkgname types', DO NOT EDIT.
+
+package types
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/sys/types/types_linux_riscv64.go b/vendor/modernc.org/libc/sys/types/types_linux_riscv64.go
new file mode 100644
index 00000000..f59fb019
--- /dev/null
+++ b/vendor/modernc.org/libc/sys/types/types_linux_riscv64.go
@@ -0,0 +1,1715 @@
+// Code generated by 'ccgo sys/types/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o sys/types/types_linux_riscv64.go -pkgname types', DO NOT EDIT.
+
+package types
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	BIG_ENDIAN                   = 4321
+	BYTE_ORDER                   = 1234
+	FD_SETSIZE                   = 1024
+	LITTLE_ENDIAN                = 1234
+	PDP_ENDIAN                   = 3412
+	X_ATFILE_SOURCE              = 1
+	X_BITS_BYTESWAP_H            = 1
+	X_BITS_ENDIANNESS_H          = 1
+	X_BITS_ENDIAN_H              = 1
+	X_BITS_PTHREADTYPES_ARCH_H   = 1
+	X_BITS_PTHREADTYPES_COMMON_H = 1
+	X_BITS_STDINT_INTN_H         = 1
+	X_BITS_TIME64_H              = 1
+	X_BITS_TYPESIZES_H           = 1
+	X_BITS_TYPES_H               = 1
+	X_BITS_UINTN_IDENTITY_H      = 1
+	X_BSD_SIZE_T_                = 0
+	X_BSD_SIZE_T_DEFINED_        = 0
+	X_DEFAULT_SOURCE             = 1
+	X_ENDIAN_H                   = 1
+	X_FEATURES_H                 = 1
+	X_FILE_OFFSET_BITS           = 64
+	X_GCC_SIZE_T                 = 0
+	X_LP64                       = 1
+	X_POSIX_C_SOURCE             = 200809
+	X_POSIX_SOURCE               = 1
+	X_RWLOCK_INTERNAL_H          = 0
+	X_SIZET_                     = 0
+	X_SIZE_T                     = 0
+	X_SIZE_T_                    = 0
+	X_SIZE_T_DECLARED            = 0
+	X_SIZE_T_DEFINED             = 0
+	X_SIZE_T_DEFINED_            = 0
+	X_STDC_PREDEF_H              = 1
+	X_STRUCT_TIMESPEC            = 1
+	X_SYS_CDEFS_H                = 1
+	X_SYS_SELECT_H               = 1
+	X_SYS_SIZE_T_H               = 0
+	X_SYS_TYPES_H                = 1
+	X_THREAD_MUTEX_INTERNAL_H    = 1
+	X_THREAD_SHARED_TYPES_H      = 1
+	X_T_SIZE                     = 0
+	X_T_SIZE_                    = 0
+	Linux                        = 1
+	Unix                         = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint64  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We don't use `memset' because this would require a prototype and
+//    the array isn't too big.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//    microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int64 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [16]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Machine-specific pthread type layouts.  RISC-V version.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// Default mutex implementation struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Generic struct for both POSIX and C11 mutexes.  New ports are expected
+//    to use the default layout, however architecture can redefine it to
+//    add arch-specific extension (such as lock-elision).  The struct have
+//    a size of 32 bytes on LP32 and 40 bytes on LP64 architectures.
+
+type X__pthread_mutex_s = struct {
+	F__lock   int32
+	F__count  uint32
+	F__owner  int32
+	F__nusers uint32
+	F__kind   int32
+	F__spins  int32
+	F__list   X__pthread_list_t
+} /* struct_mutex.h:27:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// RISC-V internal rwlock struct definitions.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// There is a lot of padding in this structure.  While it's not strictly
+//    necessary on RISC-V, we're going to leave it in to be on the safe side in
+//    case it's needed in the future.  Most other architectures have the padding,
+//    so this gives us the same extensibility as everyone else has.
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__pad1          uint64
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:27:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+type X__tss_t = uint32  /* thread-shared-types.h:119:22 */
+type X__thrd_t = uint64 /* thread-shared-types.h:120:27 */
+
+type X__once_flag = struct{ F__data int32 } /* thread-shared-types.h:125:3 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]uint8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]uint8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]uint8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]uint8
+} /* pthreadtypes.h:118:3 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/termios/capi_linux_riscv64.go b/vendor/modernc.org/libc/termios/capi_linux_riscv64.go
new file mode 100644
index 00000000..6edfd291
--- /dev/null
+++ b/vendor/modernc.org/libc/termios/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_riscv64.go -pkgname termios', DO NOT EDIT.
+
+package termios
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/termios/termios_linux_riscv64.go b/vendor/modernc.org/libc/termios/termios_linux_riscv64.go
new file mode 100644
index 00000000..138f40ea
--- /dev/null
+++ b/vendor/modernc.org/libc/termios/termios_linux_riscv64.go
@@ -0,0 +1,1194 @@
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_riscv64.go -pkgname termios', DO NOT EDIT.
+
+package termios
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	B0                             = 0000000
+	B1000000                       = 0010010
+	B110                           = 0000003
+	B115200                        = 0010002
+	B1152000                       = 0010011
+	B1200                          = 0000011
+	B134                           = 0000004
+	B150                           = 0000005
+	B1500000                       = 0010012
+	B1800                          = 0000012
+	B19200                         = 0000016
+	B200                           = 0000006
+	B2000000                       = 0010013
+	B230400                        = 0010003
+	B2400                          = 0000013
+	B2500000                       = 0010014
+	B300                           = 0000007
+	B3000000                       = 0010015
+	B3500000                       = 0010016
+	B38400                         = 0000017
+	B4000000                       = 0010017
+	B460800                        = 0010004
+	B4800                          = 0000014
+	B50                            = 0000001
+	B500000                        = 0010005
+	B57600                         = 0010001
+	B576000                        = 0010006
+	B600                           = 0000010
+	B75                            = 0000002
+	B921600                        = 0010007
+	B9600                          = 0000015
+	BRKINT                         = 0000002
+	BS0                            = 0000000
+	BS1                            = 0020000
+	BSDLY                          = 0020000
+	CBAUD                          = 000000010017
+	CBAUDEX                        = 000000010000
+	CBRK                           = 0
+	CDISCARD                       = 15
+	CDSUSP                         = 25
+	CEOF                           = 4
+	CEOL                           = 0
+	CEOT                           = 4
+	CERASE                         = 0177
+	CFLUSH                         = 15
+	CIBAUD                         = 002003600000
+	CINTR                          = 3
+	CKILL                          = 21
+	CLNEXT                         = 22
+	CLOCAL                         = 0004000
+	CMIN                           = 1
+	CMSPAR                         = 010000000000
+	CQUIT                          = 034
+	CR0                            = 0000000
+	CR1                            = 0001000
+	CR2                            = 0002000
+	CR3                            = 0003000
+	CRDLY                          = 0003000
+	CREAD                          = 0000200
+	CREPRINT                       = 18
+	CRPRNT                         = 18
+	CRTSCTS                        = 020000000000
+	CS5                            = 0000000
+	CS6                            = 0000020
+	CS7                            = 0000040
+	CS8                            = 0000060
+	CSIZE                          = 0000060
+	CSTART                         = 17
+	CSTATUS                        = 0
+	CSTOP                          = 19
+	CSTOPB                         = 0000100
+	CSUSP                          = 26
+	CTIME                          = 0
+	CWERASE                        = 23
+	ECHO                           = 0000010
+	ECHOCTL                        = 0001000
+	ECHOE                          = 0000020
+	ECHOK                          = 0000040
+	ECHOKE                         = 0004000
+	ECHONL                         = 0000100
+	ECHOPRT                        = 0002000
+	EXTA                           = 14
+	EXTB                           = 15
+	EXTPROC                        = 0200000
+	FF0                            = 0000000
+	FF1                            = 0100000
+	FFDLY                          = 0100000
+	FLUSHO                         = 0010000
+	HUPCL                          = 0002000
+	ICANON                         = 0000002
+	ICRNL                          = 0000400
+	IEXTEN                         = 0100000
+	IGNBRK                         = 0000001
+	IGNCR                          = 0000200
+	IGNPAR                         = 0000004
+	IMAXBEL                        = 0020000
+	INLCR                          = 0000100
+	INPCK                          = 0000020
+	ISIG                           = 0000001
+	ISTRIP                         = 0000040
+	IUCLC                          = 0001000
+	IUTF8                          = 0040000
+	IXANY                          = 0004000
+	IXOFF                          = 0010000
+	IXON                           = 0002000
+	NCCS                           = 32
+	NL0                            = 0000000
+	NL1                            = 0000400
+	NLDLY                          = 0000400
+	NOFLSH                         = 0000200
+	OCRNL                          = 0000010
+	OFDEL                          = 0000200
+	OFILL                          = 0000100
+	OLCUC                          = 0000002
+	ONLCR                          = 0000004
+	ONLRET                         = 0000040
+	ONOCR                          = 0000020
+	OPOST                          = 0000001
+	PARENB                         = 0000400
+	PARMRK                         = 0000010
+	PARODD                         = 0001000
+	PENDIN                         = 0040000
+	TAB0                           = 0000000
+	TAB1                           = 0004000
+	TAB2                           = 0010000
+	TAB3                           = 0014000
+	TABDLY                         = 0014000
+	TCIFLUSH                       = 0
+	TCIOFF                         = 2
+	TCIOFLUSH                      = 2
+	TCION                          = 3
+	TCOFLUSH                       = 1
+	TCOOFF                         = 0
+	TCOON                          = 1
+	TCSADRAIN                      = 1
+	TCSAFLUSH                      = 2
+	TCSANOW                        = 0
+	TIOCSER_TEMT                   = 0x01
+	TOSTOP                         = 0000400
+	TTYDEF_CFLAG                   = 1440
+	TTYDEF_IFLAG                   = 11554
+	TTYDEF_LFLAG                   = 35355
+	TTYDEF_OFLAG                   = 6149
+	TTYDEF_SPEED                   = 13
+	VDISCARD                       = 13
+	VEOF                           = 4
+	VEOL                           = 11
+	VEOL2                          = 16
+	VERASE                         = 2
+	VINTR                          = 0
+	VKILL                          = 3
+	VLNEXT                         = 15
+	VMIN                           = 6
+	VQUIT                          = 1
+	VREPRINT                       = 12
+	VSTART                         = 8
+	VSTOP                          = 9
+	VSUSP                          = 10
+	VSWTC                          = 7
+	VT0                            = 0000000
+	VT1                            = 0040000
+	VTDLY                          = 0040000
+	VTIME                          = 5
+	VWERASE                        = 14
+	XCASE                          = 0000004
+	XTABS                          = 0014000
+	X_ATFILE_SOURCE                = 1
+	X_BITS_TIME64_H                = 1
+	X_BITS_TYPESIZES_H             = 1
+	X_BITS_TYPES_H                 = 1
+	X_DEFAULT_SOURCE               = 1
+	X_FEATURES_H                   = 1
+	X_FILE_OFFSET_BITS             = 64
+	X_HAVE_STRUCT_TERMIOS_C_ISPEED = 1
+	X_HAVE_STRUCT_TERMIOS_C_OSPEED = 1
+	X_LP64                         = 1
+	X_POSIX_C_SOURCE               = 200809
+	X_POSIX_SOURCE                 = 1
+	X_STDC_PREDEF_H                = 1
+	X_SYS_CDEFS_H                  = 1
+	X_SYS_TTYDEFAULTS_H_           = 0
+	X_TERMIOS_H                    = 1
+	Linux                          = 1
+	Unix                           = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 7.1-2 General Terminal Interface	<termios.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// We need `pid_t'.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type Pid_t = X__pid_t /* termios.h:30:17 */
+
+// Get the system-dependent definitions of `struct termios', `tcflag_t',
+//    `cc_t', `speed_t', and all the macros specifying the flag bits.
+// termios type and macro definitions.  Linux version.
+//    Copyright (C) 1993-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+type Cc_t = uint8      /* termios.h:23:23 */
+type Speed_t = uint32  /* termios.h:24:22 */
+type Tcflag_t = uint32 /* termios.h:25:22 */
+
+// struct termios definition.  Linux/generic version.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+type Termios = struct {
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_line      Cc_t
+	Fc_cc        [32]Cc_t
+	F__ccgo_pad1 [3]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
+} /* termios-struct.h:24:1 */
+
+// -
+// Copyright (c) 1982, 1986, 1993
+//	The Regents of the University of California.  All rights reserved.
+// (c) UNIX System Laboratories, Inc.
+// All or some portions of this file are derived from material licensed
+// to the University of California by American Telephone and Telegraph
+// Co. or Unix System Laboratories, Inc. and are reproduced herein with
+// the permission of UNIX System Laboratories, Inc.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 4. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	@(#)ttydefaults.h	8.4 (Berkeley) 1/21/94
+
+// System wide defaults for terminal state.  Linux version.
+
+// Defaults on "first" open.
+
+// Control Character Defaults
+// compat
+
+// PROTECTED INCLUSION ENDS HERE
+
+// #define TTYDEFCHARS to include an array of default control characters.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/time/capi_linux_riscv64.go b/vendor/modernc.org/libc/time/capi_linux_riscv64.go
new file mode 100644
index 00000000..31f1a1a2
--- /dev/null
+++ b/vendor/modernc.org/libc/time/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo time/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o time/time_linux_riscv64.go -pkgname time', DO NOT EDIT.
+
+package time
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/time/time_linux_riscv64.go b/vendor/modernc.org/libc/time/time_linux_riscv64.go
new file mode 100644
index 00000000..e60813d5
--- /dev/null
+++ b/vendor/modernc.org/libc/time/time_linux_riscv64.go
@@ -0,0 +1,711 @@
+// Code generated by 'ccgo time/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o time/time_linux_riscv64.go -pkgname time', DO NOT EDIT.
+
+package time
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	CLOCK_BOOTTIME            = 7
+	CLOCK_BOOTTIME_ALARM      = 9
+	CLOCK_MONOTONIC           = 1
+	CLOCK_MONOTONIC_COARSE    = 6
+	CLOCK_MONOTONIC_RAW       = 4
+	CLOCK_PROCESS_CPUTIME_ID  = 2
+	CLOCK_REALTIME            = 0
+	CLOCK_REALTIME_ALARM      = 8
+	CLOCK_REALTIME_COARSE     = 5
+	CLOCK_TAI                 = 11
+	CLOCK_THREAD_CPUTIME_ID   = 3
+	TIMER_ABSTIME             = 1
+	TIME_UTC                  = 1
+	X_ATFILE_SOURCE           = 1
+	X_BITS_ENDIANNESS_H       = 1
+	X_BITS_ENDIAN_H           = 1
+	X_BITS_TIME64_H           = 1
+	X_BITS_TIME_H             = 1
+	X_BITS_TYPESIZES_H        = 1
+	X_BITS_TYPES_H            = 1
+	X_BITS_TYPES_LOCALE_T_H   = 1
+	X_BITS_TYPES___LOCALE_T_H = 1
+	X_BSD_SIZE_T_             = 0
+	X_BSD_SIZE_T_DEFINED_     = 0
+	X_DEFAULT_SOURCE          = 1
+	X_FEATURES_H              = 1
+	X_FILE_OFFSET_BITS        = 64
+	X_GCC_SIZE_T              = 0
+	X_LP64                    = 1
+	X_POSIX_C_SOURCE          = 200809
+	X_POSIX_SOURCE            = 1
+	X_SIZET_                  = 0
+	X_SIZE_T                  = 0
+	X_SIZE_T_                 = 0
+	X_SIZE_T_DECLARED         = 0
+	X_SIZE_T_DEFINED          = 0
+	X_SIZE_T_DEFINED_         = 0
+	X_STDC_PREDEF_H           = 1
+	X_STRUCT_TIMESPEC         = 1
+	X_SYS_CDEFS_H             = 1
+	X_SYS_SIZE_T_H            = 0
+	X_TIME_H                  = 1
+	X_T_SIZE                  = 0
+	X_T_SIZE_                 = 0
+	Linux                     = 1
+	Unix                      = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// This defines CLOCKS_PER_SEC, which is the number of processor clock
+//    ticks per second, and possibly a number of other constants.
+// System-dependent timing definitions.  Linux version.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <time.h> instead.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+// ISO/IEC 9899:1999 7.23.1: Components of time
+//    The macro `CLOCKS_PER_SEC' is an expression with type `clock_t' that is
+//    the number per second of the value returned by the `clock' function.
+// CAE XSH, Issue 4, Version 2: <time.h>
+//    The value of CLOCKS_PER_SEC is required to be 1 million on all
+//    XSI-conformant systems.
+
+// Identifier for system-wide realtime clock.
+// Monotonic system-wide clock.
+// High-resolution timer from the CPU.
+// Thread-specific CPU-time clock.
+// Monotonic system-wide clock, not adjusted for frequency scaling.
+// Identifier for system-wide realtime clock, updated only on ticks.
+// Monotonic system-wide clock, updated only on ticks.
+// Monotonic system-wide clock that includes time spent in suspension.
+// Like CLOCK_REALTIME but also wakes suspended system.
+// Like CLOCK_BOOTTIME but also wakes suspended system.
+// Like CLOCK_REALTIME but in International Atomic Time.
+
+// Flag to indicate time is absolute.
+
+// Many of the typedefs and structs whose official home is this header
+//    may also need to be defined by other headers.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// ISO C `broken-down time' structure.
+type Tm = struct {
+	Ftm_sec      int32
+	Ftm_min      int32
+	Ftm_hour     int32
+	Ftm_mday     int32
+	Ftm_mon      int32
+	Ftm_year     int32
+	Ftm_wday     int32
+	Ftm_yday     int32
+	Ftm_isdst    int32
+	F__ccgo_pad1 [4]byte
+	Ftm_gmtoff   int64
+	Ftm_zone     uintptr
+} /* struct_tm.h:7:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Definitions for byte order, according to significance of bytes,
+//    from low addresses to high addresses.  The value is what you get by
+//    putting '4' in the most significant byte, '3' in the second most
+//    significant byte, '2' in the second least significant byte, and '1'
+//    in the least significant byte, and then writing down one digit for
+//    each byte, starting with the byte at the lowest address at the left,
+//    and proceeding to the byte with the highest address at the right.
+
+// This file defines `__BYTE_ORDER' for the particular machine.
+
+// RISC-V is little-endian.
+
+// Some machines may need to use a different endianness for floating point
+//    values.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:11:1 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// POSIX.1b structure for timer start values and intervals.
+type Itimerspec = struct {
+	Fit_interval struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fit_value struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+} /* struct_itimerspec.h:8:1 */
+
+type Pid_t = X__pid_t /* time.h:54:17 */
+
+// Definition of locale_t.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition of struct __locale_struct and __locale_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// POSIX.1-2008: the locale_t type, representing a locale context
+//    (implementation-namespace version).  This type should be treated
+//    as opaque by applications; some details are exposed for the sake of
+//    efficiency in e.g. ctype functions.
+
+type X__locale_struct = struct {
+	F__locales       [13]uintptr
+	F__ctype_b       uintptr
+	F__ctype_tolower uintptr
+	F__ctype_toupper uintptr
+	F__names         [13]uintptr
+} /* __locale_t.h:28:1 */
+
+type X__locale_t = uintptr /* __locale_t.h:42:32 */
+
+type Locale_t = X__locale_t /* locale_t.h:24:20 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/unistd/capi_linux_riscv64.go b/vendor/modernc.org/libc/unistd/capi_linux_riscv64.go
new file mode 100644
index 00000000..24077fcd
--- /dev/null
+++ b/vendor/modernc.org/libc/unistd/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo unistd/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o unistd/unistd_linux_riscv64.go -pkgname unistd', DO NOT EDIT.
+
+package unistd
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/unistd/unistd_linux_riscv64.go b/vendor/modernc.org/libc/unistd/unistd_linux_riscv64.go
new file mode 100644
index 00000000..a10adc11
--- /dev/null
+++ b/vendor/modernc.org/libc/unistd/unistd_linux_riscv64.go
@@ -0,0 +1,1776 @@
+// Code generated by 'ccgo unistd/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o unistd/unistd_linux_riscv64.go -pkgname unistd', DO NOT EDIT.
+
+package unistd
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	F_LOCK                             = 1
+	F_OK                               = 0
+	F_TEST                             = 3
+	F_TLOCK                            = 2
+	F_ULOCK                            = 0
+	L_INCR                             = 1
+	L_SET                              = 0
+	L_XTND                             = 2
+	R_OK                               = 4
+	SEEK_CUR                           = 1
+	SEEK_END                           = 2
+	SEEK_SET                           = 0
+	STDERR_FILENO                      = 2
+	STDIN_FILENO                       = 0
+	STDOUT_FILENO                      = 1
+	W_OK                               = 2
+	X_OK                               = 1
+	X_ATFILE_SOURCE                    = 1
+	X_BITS_POSIX_OPT_H                 = 1
+	X_BITS_TIME64_H                    = 1
+	X_BITS_TYPESIZES_H                 = 1
+	X_BITS_TYPES_H                     = 1
+	X_BSD_SIZE_T_                      = 0
+	X_BSD_SIZE_T_DEFINED_              = 0
+	X_DEFAULT_SOURCE                   = 1
+	X_FEATURES_H                       = 1
+	X_FILE_OFFSET_BITS                 = 64
+	X_GCC_SIZE_T                       = 0
+	X_GETOPT_CORE_H                    = 1
+	X_GETOPT_POSIX_H                   = 1
+	X_LFS64_ASYNCHRONOUS_IO            = 1
+	X_LFS64_LARGEFILE                  = 1
+	X_LFS64_STDIO                      = 1
+	X_LFS_ASYNCHRONOUS_IO              = 1
+	X_LFS_LARGEFILE                    = 1
+	X_LP64                             = 1
+	X_POSIX2_CHAR_TERM                 = 200809
+	X_POSIX2_C_BIND                    = 200809
+	X_POSIX2_C_DEV                     = 200809
+	X_POSIX2_C_VERSION                 = 200809
+	X_POSIX2_LOCALEDEF                 = 200809
+	X_POSIX2_SW_DEV                    = 200809
+	X_POSIX2_VERSION                   = 200809
+	X_POSIX_ADVISORY_INFO              = 200809
+	X_POSIX_ASYNCHRONOUS_IO            = 200809
+	X_POSIX_ASYNC_IO                   = 1
+	X_POSIX_BARRIERS                   = 200809
+	X_POSIX_CHOWN_RESTRICTED           = 0
+	X_POSIX_CLOCK_SELECTION            = 200809
+	X_POSIX_CPUTIME                    = 0
+	X_POSIX_C_SOURCE                   = 200809
+	X_POSIX_FSYNC                      = 200809
+	X_POSIX_IPV6                       = 200809
+	X_POSIX_JOB_CONTROL                = 1
+	X_POSIX_MAPPED_FILES               = 200809
+	X_POSIX_MEMLOCK                    = 200809
+	X_POSIX_MEMLOCK_RANGE              = 200809
+	X_POSIX_MEMORY_PROTECTION          = 200809
+	X_POSIX_MESSAGE_PASSING            = 200809
+	X_POSIX_MONOTONIC_CLOCK            = 0
+	X_POSIX_NO_TRUNC                   = 1
+	X_POSIX_PRIORITIZED_IO             = 200809
+	X_POSIX_PRIORITY_SCHEDULING        = 200809
+	X_POSIX_RAW_SOCKETS                = 200809
+	X_POSIX_READER_WRITER_LOCKS        = 200809
+	X_POSIX_REALTIME_SIGNALS           = 200809
+	X_POSIX_REENTRANT_FUNCTIONS        = 1
+	X_POSIX_REGEXP                     = 1
+	X_POSIX_SAVED_IDS                  = 1
+	X_POSIX_SEMAPHORES                 = 200809
+	X_POSIX_SHARED_MEMORY_OBJECTS      = 200809
+	X_POSIX_SHELL                      = 1
+	X_POSIX_SOURCE                     = 1
+	X_POSIX_SPAWN                      = 200809
+	X_POSIX_SPIN_LOCKS                 = 200809
+	X_POSIX_SPORADIC_SERVER            = -1
+	X_POSIX_SYNCHRONIZED_IO            = 200809
+	X_POSIX_THREADS                    = 200809
+	X_POSIX_THREAD_ATTR_STACKADDR      = 200809
+	X_POSIX_THREAD_ATTR_STACKSIZE      = 200809
+	X_POSIX_THREAD_CPUTIME             = 0
+	X_POSIX_THREAD_PRIORITY_SCHEDULING = 200809
+	X_POSIX_THREAD_PRIO_INHERIT        = 200809
+	X_POSIX_THREAD_PRIO_PROTECT        = 200809
+	X_POSIX_THREAD_PROCESS_SHARED      = 200809
+	X_POSIX_THREAD_ROBUST_PRIO_INHERIT = 200809
+	X_POSIX_THREAD_ROBUST_PRIO_PROTECT = -1
+	X_POSIX_THREAD_SAFE_FUNCTIONS      = 200809
+	X_POSIX_THREAD_SPORADIC_SERVER     = -1
+	X_POSIX_TIMEOUTS                   = 200809
+	X_POSIX_TIMERS                     = 200809
+	X_POSIX_TRACE                      = -1
+	X_POSIX_TRACE_EVENT_FILTER         = -1
+	X_POSIX_TRACE_INHERIT              = -1
+	X_POSIX_TRACE_LOG                  = -1
+	X_POSIX_TYPED_MEMORY_OBJECTS       = -1
+	X_POSIX_V6_ILP32_OFF32             = -1
+	X_POSIX_V6_ILP32_OFFBIG            = -1
+	X_POSIX_V6_LP64_OFF64              = 1
+	X_POSIX_V6_LPBIG_OFFBIG            = -1
+	X_POSIX_V7_ILP32_OFF32             = -1
+	X_POSIX_V7_ILP32_OFFBIG            = -1
+	X_POSIX_V7_LP64_OFF64              = 1
+	X_POSIX_V7_LPBIG_OFFBIG            = -1
+	X_POSIX_VDISABLE                   = 0
+	X_POSIX_VERSION                    = 200809
+	X_SIZET_                           = 0
+	X_SIZE_T                           = 0
+	X_SIZE_T_                          = 0
+	X_SIZE_T_DECLARED                  = 0
+	X_SIZE_T_DEFINED                   = 0
+	X_SIZE_T_DEFINED_                  = 0
+	X_STDC_PREDEF_H                    = 1
+	X_SYS_CDEFS_H                      = 1
+	X_SYS_SIZE_T_H                     = 0
+	X_T_SIZE                           = 0
+	X_T_SIZE_                          = 0
+	X_UNISTD_H                         = 1
+	X_XBS5_ILP32_OFF32                 = -1
+	X_XBS5_ILP32_OFFBIG                = -1
+	X_XBS5_LP64_OFF64                  = 1
+	X_XBS5_LPBIG_OFFBIG                = -1
+	X_XOPEN_ENH_I18N                   = 1
+	X_XOPEN_LEGACY                     = 1
+	X_XOPEN_REALTIME                   = 1
+	X_XOPEN_REALTIME_THREADS           = 1
+	X_XOPEN_SHM                        = 1
+	X_XOPEN_UNIX                       = 1
+	X_XOPEN_VERSION                    = 700
+	X_XOPEN_XCU_VERSION                = 4
+	X_XOPEN_XPG2                       = 1
+	X_XOPEN_XPG3                       = 1
+	X_XOPEN_XPG4                       = 1
+	Linux                              = 1
+	Unix                               = 1
+)
+
+// Get the `_PC_*' symbols for the NAME argument to `pathconf' and `fpathconf';
+//    the `_SC_*' symbols for the NAME argument to `sysconf';
+//    and the `_CS_*' symbols for the NAME argument to `confstr'.
+// `sysconf', `pathconf', and `confstr' NAME values.  Generic version.
+//    Copyright (C) 1993-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Values for the NAME argument to `pathconf' and `fpathconf'.
+const ( /* confname.h:24:1: */
+	X_PC_LINK_MAX           = 0
+	X_PC_MAX_CANON          = 1
+	X_PC_MAX_INPUT          = 2
+	X_PC_NAME_MAX           = 3
+	X_PC_PATH_MAX           = 4
+	X_PC_PIPE_BUF           = 5
+	X_PC_CHOWN_RESTRICTED   = 6
+	X_PC_NO_TRUNC           = 7
+	X_PC_VDISABLE           = 8
+	X_PC_SYNC_IO            = 9
+	X_PC_ASYNC_IO           = 10
+	X_PC_PRIO_IO            = 11
+	X_PC_SOCK_MAXBUF        = 12
+	X_PC_FILESIZEBITS       = 13
+	X_PC_REC_INCR_XFER_SIZE = 14
+	X_PC_REC_MAX_XFER_SIZE  = 15
+	X_PC_REC_MIN_XFER_SIZE  = 16
+	X_PC_REC_XFER_ALIGN     = 17
+	X_PC_ALLOC_SIZE_MIN     = 18
+	X_PC_SYMLINK_MAX        = 19
+	X_PC_2_SYMLINKS         = 20
+)
+
+// Values for the NAME argument to `confstr'.
+const ( /* confname.h:539:1: */
+	X_CS_PATH = 0 // The default search path.
+
+	X_CS_V6_WIDTH_RESTRICTED_ENVS = 1
+
+	X_CS_GNU_LIBC_VERSION       = 2
+	X_CS_GNU_LIBPTHREAD_VERSION = 3
+
+	X_CS_V5_WIDTH_RESTRICTED_ENVS = 4
+
+	X_CS_V7_WIDTH_RESTRICTED_ENVS = 5
+
+	X_CS_LFS_CFLAGS      = 1000
+	X_CS_LFS_LDFLAGS     = 1001
+	X_CS_LFS_LIBS        = 1002
+	X_CS_LFS_LINTFLAGS   = 1003
+	X_CS_LFS64_CFLAGS    = 1004
+	X_CS_LFS64_LDFLAGS   = 1005
+	X_CS_LFS64_LIBS      = 1006
+	X_CS_LFS64_LINTFLAGS = 1007
+
+	X_CS_XBS5_ILP32_OFF32_CFLAGS     = 1100
+	X_CS_XBS5_ILP32_OFF32_LDFLAGS    = 1101
+	X_CS_XBS5_ILP32_OFF32_LIBS       = 1102
+	X_CS_XBS5_ILP32_OFF32_LINTFLAGS  = 1103
+	X_CS_XBS5_ILP32_OFFBIG_CFLAGS    = 1104
+	X_CS_XBS5_ILP32_OFFBIG_LDFLAGS   = 1105
+	X_CS_XBS5_ILP32_OFFBIG_LIBS      = 1106
+	X_CS_XBS5_ILP32_OFFBIG_LINTFLAGS = 1107
+	X_CS_XBS5_LP64_OFF64_CFLAGS      = 1108
+	X_CS_XBS5_LP64_OFF64_LDFLAGS     = 1109
+	X_CS_XBS5_LP64_OFF64_LIBS        = 1110
+	X_CS_XBS5_LP64_OFF64_LINTFLAGS   = 1111
+	X_CS_XBS5_LPBIG_OFFBIG_CFLAGS    = 1112
+	X_CS_XBS5_LPBIG_OFFBIG_LDFLAGS   = 1113
+	X_CS_XBS5_LPBIG_OFFBIG_LIBS      = 1114
+	X_CS_XBS5_LPBIG_OFFBIG_LINTFLAGS = 1115
+
+	X_CS_POSIX_V6_ILP32_OFF32_CFLAGS     = 1116
+	X_CS_POSIX_V6_ILP32_OFF32_LDFLAGS    = 1117
+	X_CS_POSIX_V6_ILP32_OFF32_LIBS       = 1118
+	X_CS_POSIX_V6_ILP32_OFF32_LINTFLAGS  = 1119
+	X_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS    = 1120
+	X_CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS   = 1121
+	X_CS_POSIX_V6_ILP32_OFFBIG_LIBS      = 1122
+	X_CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS = 1123
+	X_CS_POSIX_V6_LP64_OFF64_CFLAGS      = 1124
+	X_CS_POSIX_V6_LP64_OFF64_LDFLAGS     = 1125
+	X_CS_POSIX_V6_LP64_OFF64_LIBS        = 1126
+	X_CS_POSIX_V6_LP64_OFF64_LINTFLAGS   = 1127
+	X_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS    = 1128
+	X_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS   = 1129
+	X_CS_POSIX_V6_LPBIG_OFFBIG_LIBS      = 1130
+	X_CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS = 1131
+
+	X_CS_POSIX_V7_ILP32_OFF32_CFLAGS     = 1132
+	X_CS_POSIX_V7_ILP32_OFF32_LDFLAGS    = 1133
+	X_CS_POSIX_V7_ILP32_OFF32_LIBS       = 1134
+	X_CS_POSIX_V7_ILP32_OFF32_LINTFLAGS  = 1135
+	X_CS_POSIX_V7_ILP32_OFFBIG_CFLAGS    = 1136
+	X_CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS   = 1137
+	X_CS_POSIX_V7_ILP32_OFFBIG_LIBS      = 1138
+	X_CS_POSIX_V7_ILP32_OFFBIG_LINTFLAGS = 1139
+	X_CS_POSIX_V7_LP64_OFF64_CFLAGS      = 1140
+	X_CS_POSIX_V7_LP64_OFF64_LDFLAGS     = 1141
+	X_CS_POSIX_V7_LP64_OFF64_LIBS        = 1142
+	X_CS_POSIX_V7_LP64_OFF64_LINTFLAGS   = 1143
+	X_CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS    = 1144
+	X_CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS   = 1145
+	X_CS_POSIX_V7_LPBIG_OFFBIG_LIBS      = 1146
+	X_CS_POSIX_V7_LPBIG_OFFBIG_LINTFLAGS = 1147
+
+	X_CS_V6_ENV = 1148
+	X_CS_V7_ENV = 1149
+)
+
+// Values for the argument to `sysconf'.
+const ( /* confname.h:71:1: */
+	X_SC_ARG_MAX               = 0
+	X_SC_CHILD_MAX             = 1
+	X_SC_CLK_TCK               = 2
+	X_SC_NGROUPS_MAX           = 3
+	X_SC_OPEN_MAX              = 4
+	X_SC_STREAM_MAX            = 5
+	X_SC_TZNAME_MAX            = 6
+	X_SC_JOB_CONTROL           = 7
+	X_SC_SAVED_IDS             = 8
+	X_SC_REALTIME_SIGNALS      = 9
+	X_SC_PRIORITY_SCHEDULING   = 10
+	X_SC_TIMERS                = 11
+	X_SC_ASYNCHRONOUS_IO       = 12
+	X_SC_PRIORITIZED_IO        = 13
+	X_SC_SYNCHRONIZED_IO       = 14
+	X_SC_FSYNC                 = 15
+	X_SC_MAPPED_FILES          = 16
+	X_SC_MEMLOCK               = 17
+	X_SC_MEMLOCK_RANGE         = 18
+	X_SC_MEMORY_PROTECTION     = 19
+	X_SC_MESSAGE_PASSING       = 20
+	X_SC_SEMAPHORES            = 21
+	X_SC_SHARED_MEMORY_OBJECTS = 22
+	X_SC_AIO_LISTIO_MAX        = 23
+	X_SC_AIO_MAX               = 24
+	X_SC_AIO_PRIO_DELTA_MAX    = 25
+	X_SC_DELAYTIMER_MAX        = 26
+	X_SC_MQ_OPEN_MAX           = 27
+	X_SC_MQ_PRIO_MAX           = 28
+	X_SC_VERSION               = 29
+	X_SC_PAGESIZE              = 30
+	X_SC_RTSIG_MAX             = 31
+	X_SC_SEM_NSEMS_MAX         = 32
+	X_SC_SEM_VALUE_MAX         = 33
+	X_SC_SIGQUEUE_MAX          = 34
+	X_SC_TIMER_MAX             = 35
+
+	// Values for the argument to `sysconf'
+	//        corresponding to _POSIX2_* symbols.
+	X_SC_BC_BASE_MAX        = 36
+	X_SC_BC_DIM_MAX         = 37
+	X_SC_BC_SCALE_MAX       = 38
+	X_SC_BC_STRING_MAX      = 39
+	X_SC_COLL_WEIGHTS_MAX   = 40
+	X_SC_EQUIV_CLASS_MAX    = 41
+	X_SC_EXPR_NEST_MAX      = 42
+	X_SC_LINE_MAX           = 43
+	X_SC_RE_DUP_MAX         = 44
+	X_SC_CHARCLASS_NAME_MAX = 45
+
+	X_SC_2_VERSION   = 46
+	X_SC_2_C_BIND    = 47
+	X_SC_2_C_DEV     = 48
+	X_SC_2_FORT_DEV  = 49
+	X_SC_2_FORT_RUN  = 50
+	X_SC_2_SW_DEV    = 51
+	X_SC_2_LOCALEDEF = 52
+
+	X_SC_PII                 = 53
+	X_SC_PII_XTI             = 54
+	X_SC_PII_SOCKET          = 55
+	X_SC_PII_INTERNET        = 56
+	X_SC_PII_OSI             = 57
+	X_SC_POLL                = 58
+	X_SC_SELECT              = 59
+	X_SC_UIO_MAXIOV          = 60
+	X_SC_IOV_MAX             = 60
+	X_SC_PII_INTERNET_STREAM = 61
+	X_SC_PII_INTERNET_DGRAM  = 62
+	X_SC_PII_OSI_COTS        = 63
+	X_SC_PII_OSI_CLTS        = 64
+	X_SC_PII_OSI_M           = 65
+	X_SC_T_IOV_MAX           = 66
+
+	// Values according to POSIX 1003.1c (POSIX threads).
+	X_SC_THREADS                      = 67
+	X_SC_THREAD_SAFE_FUNCTIONS        = 68
+	X_SC_GETGR_R_SIZE_MAX             = 69
+	X_SC_GETPW_R_SIZE_MAX             = 70
+	X_SC_LOGIN_NAME_MAX               = 71
+	X_SC_TTY_NAME_MAX                 = 72
+	X_SC_THREAD_DESTRUCTOR_ITERATIONS = 73
+	X_SC_THREAD_KEYS_MAX              = 74
+	X_SC_THREAD_STACK_MIN             = 75
+	X_SC_THREAD_THREADS_MAX           = 76
+	X_SC_THREAD_ATTR_STACKADDR        = 77
+	X_SC_THREAD_ATTR_STACKSIZE        = 78
+	X_SC_THREAD_PRIORITY_SCHEDULING   = 79
+	X_SC_THREAD_PRIO_INHERIT          = 80
+	X_SC_THREAD_PRIO_PROTECT          = 81
+	X_SC_THREAD_PROCESS_SHARED        = 82
+
+	X_SC_NPROCESSORS_CONF = 83
+	X_SC_NPROCESSORS_ONLN = 84
+	X_SC_PHYS_PAGES       = 85
+	X_SC_AVPHYS_PAGES     = 86
+	X_SC_ATEXIT_MAX       = 87
+	X_SC_PASS_MAX         = 88
+
+	X_SC_XOPEN_VERSION     = 89
+	X_SC_XOPEN_XCU_VERSION = 90
+	X_SC_XOPEN_UNIX        = 91
+	X_SC_XOPEN_CRYPT       = 92
+	X_SC_XOPEN_ENH_I18N    = 93
+	X_SC_XOPEN_SHM         = 94
+
+	X_SC_2_CHAR_TERM = 95
+	X_SC_2_C_VERSION = 96
+	X_SC_2_UPE       = 97
+
+	X_SC_XOPEN_XPG2 = 98
+	X_SC_XOPEN_XPG3 = 99
+	X_SC_XOPEN_XPG4 = 100
+
+	X_SC_CHAR_BIT   = 101
+	X_SC_CHAR_MAX   = 102
+	X_SC_CHAR_MIN   = 103
+	X_SC_INT_MAX    = 104
+	X_SC_INT_MIN    = 105
+	X_SC_LONG_BIT   = 106
+	X_SC_WORD_BIT   = 107
+	X_SC_MB_LEN_MAX = 108
+	X_SC_NZERO      = 109
+	X_SC_SSIZE_MAX  = 110
+	X_SC_SCHAR_MAX  = 111
+	X_SC_SCHAR_MIN  = 112
+	X_SC_SHRT_MAX   = 113
+	X_SC_SHRT_MIN   = 114
+	X_SC_UCHAR_MAX  = 115
+	X_SC_UINT_MAX   = 116
+	X_SC_ULONG_MAX  = 117
+	X_SC_USHRT_MAX  = 118
+
+	X_SC_NL_ARGMAX  = 119
+	X_SC_NL_LANGMAX = 120
+	X_SC_NL_MSGMAX  = 121
+	X_SC_NL_NMAX    = 122
+	X_SC_NL_SETMAX  = 123
+	X_SC_NL_TEXTMAX = 124
+
+	X_SC_XBS5_ILP32_OFF32  = 125
+	X_SC_XBS5_ILP32_OFFBIG = 126
+	X_SC_XBS5_LP64_OFF64   = 127
+	X_SC_XBS5_LPBIG_OFFBIG = 128
+
+	X_SC_XOPEN_LEGACY           = 129
+	X_SC_XOPEN_REALTIME         = 130
+	X_SC_XOPEN_REALTIME_THREADS = 131
+
+	X_SC_ADVISORY_INFO          = 132
+	X_SC_BARRIERS               = 133
+	X_SC_BASE                   = 134
+	X_SC_C_LANG_SUPPORT         = 135
+	X_SC_C_LANG_SUPPORT_R       = 136
+	X_SC_CLOCK_SELECTION        = 137
+	X_SC_CPUTIME                = 138
+	X_SC_THREAD_CPUTIME         = 139
+	X_SC_DEVICE_IO              = 140
+	X_SC_DEVICE_SPECIFIC        = 141
+	X_SC_DEVICE_SPECIFIC_R      = 142
+	X_SC_FD_MGMT                = 143
+	X_SC_FIFO                   = 144
+	X_SC_PIPE                   = 145
+	X_SC_FILE_ATTRIBUTES        = 146
+	X_SC_FILE_LOCKING           = 147
+	X_SC_FILE_SYSTEM            = 148
+	X_SC_MONOTONIC_CLOCK        = 149
+	X_SC_MULTI_PROCESS          = 150
+	X_SC_SINGLE_PROCESS         = 151
+	X_SC_NETWORKING             = 152
+	X_SC_READER_WRITER_LOCKS    = 153
+	X_SC_SPIN_LOCKS             = 154
+	X_SC_REGEXP                 = 155
+	X_SC_REGEX_VERSION          = 156
+	X_SC_SHELL                  = 157
+	X_SC_SIGNALS                = 158
+	X_SC_SPAWN                  = 159
+	X_SC_SPORADIC_SERVER        = 160
+	X_SC_THREAD_SPORADIC_SERVER = 161
+	X_SC_SYSTEM_DATABASE        = 162
+	X_SC_SYSTEM_DATABASE_R      = 163
+	X_SC_TIMEOUTS               = 164
+	X_SC_TYPED_MEMORY_OBJECTS   = 165
+	X_SC_USER_GROUPS            = 166
+	X_SC_USER_GROUPS_R          = 167
+	X_SC_2_PBS                  = 168
+	X_SC_2_PBS_ACCOUNTING       = 169
+	X_SC_2_PBS_LOCATE           = 170
+	X_SC_2_PBS_MESSAGE          = 171
+	X_SC_2_PBS_TRACK            = 172
+	X_SC_SYMLOOP_MAX            = 173
+	X_SC_STREAMS                = 174
+	X_SC_2_PBS_CHECKPOINT       = 175
+
+	X_SC_V6_ILP32_OFF32  = 176
+	X_SC_V6_ILP32_OFFBIG = 177
+	X_SC_V6_LP64_OFF64   = 178
+	X_SC_V6_LPBIG_OFFBIG = 179
+
+	X_SC_HOST_NAME_MAX      = 180
+	X_SC_TRACE              = 181
+	X_SC_TRACE_EVENT_FILTER = 182
+	X_SC_TRACE_INHERIT      = 183
+	X_SC_TRACE_LOG          = 184
+
+	X_SC_LEVEL1_ICACHE_SIZE     = 185
+	X_SC_LEVEL1_ICACHE_ASSOC    = 186
+	X_SC_LEVEL1_ICACHE_LINESIZE = 187
+	X_SC_LEVEL1_DCACHE_SIZE     = 188
+	X_SC_LEVEL1_DCACHE_ASSOC    = 189
+	X_SC_LEVEL1_DCACHE_LINESIZE = 190
+	X_SC_LEVEL2_CACHE_SIZE      = 191
+	X_SC_LEVEL2_CACHE_ASSOC     = 192
+	X_SC_LEVEL2_CACHE_LINESIZE  = 193
+	X_SC_LEVEL3_CACHE_SIZE      = 194
+	X_SC_LEVEL3_CACHE_ASSOC     = 195
+	X_SC_LEVEL3_CACHE_LINESIZE  = 196
+	X_SC_LEVEL4_CACHE_SIZE      = 197
+	X_SC_LEVEL4_CACHE_ASSOC     = 198
+	X_SC_LEVEL4_CACHE_LINESIZE  = 199
+	// Leave room here, maybe we need a few more cache levels some day.
+
+	X_SC_IPV6        = 235
+	X_SC_RAW_SOCKETS = 236
+
+	X_SC_V7_ILP32_OFF32  = 237
+	X_SC_V7_ILP32_OFFBIG = 238
+	X_SC_V7_LP64_OFF64   = 239
+	X_SC_V7_LPBIG_OFFBIG = 240
+
+	X_SC_SS_REPL_MAX = 241
+
+	X_SC_TRACE_EVENT_NAME_MAX = 242
+	X_SC_TRACE_NAME_MAX       = 243
+	X_SC_TRACE_SYS_MAX        = 244
+	X_SC_TRACE_USER_EVENT_MAX = 245
+
+	X_SC_XOPEN_STREAMS = 246
+
+	X_SC_THREAD_ROBUST_PRIO_INHERIT = 247
+	X_SC_THREAD_ROBUST_PRIO_PROTECT = 248
+
+	X_SC_MINSIGSTKSZ = 249
+
+	X_SC_SIGSTKSZ = 250
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.10 Symbolic Constants		<unistd.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// These may be used to determine what facilities are present at compile time.
+//    Their values can be obtained at run time from `sysconf'.
+
+// POSIX Standard approved as ISO/IEC 9945-1 as of September 2008.
+
+// These are not #ifdef __USE_POSIX2 because they are
+//    in the theoretically application-owned namespace.
+
+// The utilities on GNU systems also correspond to this version.
+
+// The utilities on GNU systems also correspond to this version.
+
+// This symbol was required until the 2001 edition of POSIX.
+
+// If defined, the implementation supports the
+//    C Language Bindings Option.
+
+// If defined, the implementation supports the
+//    C Language Development Utilities Option.
+
+// If defined, the implementation supports the
+//    Software Development Utilities Option.
+
+// If defined, the implementation supports the
+//    creation of locales with the localedef utility.
+
+// X/Open version number to which the library conforms.  It is selectable.
+
+// Commands and utilities from XPG4 are available.
+
+// We are compatible with the old published standards as well.
+
+// The X/Open Unix extensions are available.
+
+// The enhanced internationalization capabilities according to XPG4.2
+//    are present.
+
+// The legacy interfaces are also available.
+
+// Get values of POSIX options:
+//
+//    If these symbols are defined, the corresponding features are
+//    always available.  If not, they may be available sometimes.
+//    The current values can be obtained with `sysconf'.
+//
+//    _POSIX_JOB_CONTROL		Job control is supported.
+//    _POSIX_SAVED_IDS		Processes have a saved set-user-ID
+// 				and a saved set-group-ID.
+//    _POSIX_REALTIME_SIGNALS	Real-time, queued signals are supported.
+//    _POSIX_PRIORITY_SCHEDULING	Priority scheduling is supported.
+//    _POSIX_TIMERS		POSIX.4 clocks and timers are supported.
+//    _POSIX_ASYNCHRONOUS_IO	Asynchronous I/O is supported.
+//    _POSIX_PRIORITIZED_IO	Prioritized asynchronous I/O is supported.
+//    _POSIX_SYNCHRONIZED_IO	Synchronizing file data is supported.
+//    _POSIX_FSYNC			The fsync function is present.
+//    _POSIX_MAPPED_FILES		Mapping of files to memory is supported.
+//    _POSIX_MEMLOCK		Locking of all memory is supported.
+//    _POSIX_MEMLOCK_RANGE		Locking of ranges of memory is supported.
+//    _POSIX_MEMORY_PROTECTION	Setting of memory protections is supported.
+//    _POSIX_MESSAGE_PASSING	POSIX.4 message queues are supported.
+//    _POSIX_SEMAPHORES		POSIX.4 counting semaphores are supported.
+//    _POSIX_SHARED_MEMORY_OBJECTS	POSIX.4 shared memory objects are supported.
+//    _POSIX_THREADS		POSIX.1c pthreads are supported.
+//    _POSIX_THREAD_ATTR_STACKADDR	Thread stack address attribute option supported.
+//    _POSIX_THREAD_ATTR_STACKSIZE	Thread stack size attribute option supported.
+//    _POSIX_THREAD_SAFE_FUNCTIONS	Thread-safe functions are supported.
+//    _POSIX_THREAD_PRIORITY_SCHEDULING
+// 				POSIX.1c thread execution scheduling supported.
+//    _POSIX_THREAD_PRIO_INHERIT	Thread priority inheritance option supported.
+//    _POSIX_THREAD_PRIO_PROTECT	Thread priority protection option supported.
+//    _POSIX_THREAD_PROCESS_SHARED	Process-shared synchronization supported.
+//    _POSIX_PII			Protocol-independent interfaces are supported.
+//    _POSIX_PII_XTI		XTI protocol-indep. interfaces are supported.
+//    _POSIX_PII_SOCKET		Socket protocol-indep. interfaces are supported.
+//    _POSIX_PII_INTERNET		Internet family of protocols supported.
+//    _POSIX_PII_INTERNET_STREAM	Connection-mode Internet protocol supported.
+//    _POSIX_PII_INTERNET_DGRAM	Connectionless Internet protocol supported.
+//    _POSIX_PII_OSI		ISO/OSI family of protocols supported.
+//    _POSIX_PII_OSI_COTS		Connection-mode ISO/OSI service supported.
+//    _POSIX_PII_OSI_CLTS		Connectionless ISO/OSI service supported.
+//    _POSIX_POLL			Implementation supports `poll' function.
+//    _POSIX_SELECT		Implementation supports `select' and `pselect'.
+//
+//    _XOPEN_REALTIME		X/Open realtime support is available.
+//    _XOPEN_REALTIME_THREADS	X/Open realtime thread support is available.
+//    _XOPEN_SHM			Shared memory interface according to XPG4.2.
+//
+//    _XBS5_ILP32_OFF32		Implementation provides environment with 32-bit
+// 				int, long, pointer, and off_t types.
+//    _XBS5_ILP32_OFFBIG		Implementation provides environment with 32-bit
+// 				int, long, and pointer and off_t with at least
+// 				64 bits.
+//    _XBS5_LP64_OFF64		Implementation provides environment with 32-bit
+// 				int, and 64-bit long, pointer, and off_t types.
+//    _XBS5_LPBIG_OFFBIG		Implementation provides environment with at
+// 				least 32 bits int and long, pointer, and off_t
+// 				with at least 64 bits.
+//
+//    If any of these symbols is defined as -1, the corresponding option is not
+//    true for any file.  If any is defined as other than -1, the corresponding
+//    option is true for all files.  If a symbol is not defined at all, the value
+//    for a specific file can be obtained from `pathconf' and `fpathconf'.
+//
+//    _POSIX_CHOWN_RESTRICTED	Only the super user can use `chown' to change
+// 				the owner of a file.  `chown' can only be used
+// 				to change the group ID of a file to a group of
+// 				which the calling process is a member.
+//    _POSIX_NO_TRUNC		Pathname components longer than
+// 				NAME_MAX generate an error.
+//    _POSIX_VDISABLE		If defined, if the value of an element of the
+// 				`c_cc' member of `struct termios' is
+// 				_POSIX_VDISABLE, no character will have the
+// 				effect associated with that element.
+//    _POSIX_SYNC_IO		Synchronous I/O may be performed.
+//    _POSIX_ASYNC_IO		Asynchronous I/O may be performed.
+//    _POSIX_PRIO_IO		Prioritized Asynchronous I/O may be performed.
+//
+//    Support for the Large File Support interface is not generally available.
+//    If it is available the following constants are defined to one.
+//    _LFS64_LARGEFILE		Low-level I/O supports large files.
+//    _LFS64_STDIO			Standard I/O supports large files.
+//
+
+// Define POSIX options for Linux.
+//    Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public License as
+//    published by the Free Software Foundation; either version 2.1 of the
+//    License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; see the file COPYING.LIB.  If
+//    not, see <https://www.gnu.org/licenses/>.
+
+// Job control is supported.
+
+// Processes have a saved set-user-ID and a saved set-group-ID.
+
+// Priority scheduling is not supported with the correct semantics,
+//    but GNU/Linux applications expect that the corresponding interfaces
+//    are available, even though the semantics do not meet the POSIX
+//    requirements.  See glibc bug 14829.
+
+// Synchronizing file data is supported.
+
+// The fsync function is present.
+
+// Mapping of files to memory is supported.
+
+// Locking of all memory is supported.
+
+// Locking of ranges of memory is supported.
+
+// Setting of memory protections is supported.
+
+// Some filesystems allow all users to change file ownership.
+
+// `c_cc' member of 'struct termios' structure can be disabled by
+//    using the value _POSIX_VDISABLE.
+
+// Filenames are not silently truncated.
+
+// X/Open realtime support is available.
+
+// X/Open thread realtime support is available.
+
+// XPG4.2 shared memory is supported.
+
+// Tell we have POSIX threads.
+
+// We have the reentrant functions described in POSIX.
+
+// We provide priority scheduling for threads.
+
+// We support user-defined stack sizes.
+
+// We support user-defined stacks.
+
+// We support priority inheritence.
+
+// We support priority protection, though only for non-robust
+//    mutexes.
+
+// We support priority inheritence for robust mutexes.
+
+// We do not support priority protection for robust mutexes.
+
+// We support POSIX.1b semaphores.
+
+// Real-time signals are supported.
+
+// We support asynchronous I/O.
+// Alternative name for Unix98.
+// Support for prioritization is also available.
+
+// The LFS support in asynchronous I/O is also available.
+
+// The rest of the LFS is also available.
+
+// POSIX shared memory objects are implemented.
+
+// CPU-time clocks support needs to be checked at runtime.
+
+// Clock support in threads must be also checked at runtime.
+
+// GNU libc provides regular expression handling.
+
+// Reader/Writer locks are available.
+
+// We have a POSIX shell.
+
+// We support the Timeouts option.
+
+// We support spinlocks.
+
+// The `spawn' function family is supported.
+
+// We have POSIX timers.
+
+// The barrier functions are available.
+
+// POSIX message queues are available.
+
+// Thread process-shared synchronization is supported.
+
+// The monotonic clock might be available.
+
+// The clock selection interfaces are available.
+
+// Advisory information interfaces are available.
+
+// IPv6 support is available.
+
+// Raw socket support is available.
+
+// We have at least one terminal.
+
+// Neither process nor thread sporadic server interfaces is available.
+
+// trace.h is not available.
+
+// Typed memory objects are not available.
+
+// Get the environment definitions from Unix98.
+// Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This header should define the following symbols under the described
+//    situations.  A value `1' means that the model is always supported,
+//    `-1' means it is never supported.  Undefined means it cannot be
+//    statically decided.
+//
+//    _POSIX_V7_ILP32_OFF32   32bit int, long, pointers, and off_t type
+//    _POSIX_V7_ILP32_OFFBIG  32bit int, long, and pointers and larger off_t type
+//
+//    _POSIX_V7_LP64_OFF32    64bit long and pointers and 32bit off_t type
+//    _POSIX_V7_LPBIG_OFFBIG  64bit long and pointers and large off_t type
+//
+//    The macros _POSIX_V6_ILP32_OFF32, _POSIX_V6_ILP32_OFFBIG,
+//    _POSIX_V6_LP64_OFF32, _POSIX_V6_LPBIG_OFFBIG, _XBS5_ILP32_OFF32,
+//    _XBS5_ILP32_OFFBIG, _XBS5_LP64_OFF32, and _XBS5_LPBIG_OFFBIG were
+//    used in previous versions of the Unix standard and are available
+//    only for compatibility.
+
+// We can never provide environments with 32-bit wide pointers.
+// We also have no use (for now) for an environment with bigger pointers
+//    and offsets.
+
+// By default we have 64-bit wide `long int', pointers and `off_t'.
+
+// Standard file descriptors.
+
+// All functions that are not declared anywhere else.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type Ssize_t = X__ssize_t /* unistd.h:220:19 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// The Single Unix specification says that some more types are
+//    available here.
+type Gid_t = X__gid_t /* unistd.h:232:17 */
+
+type Uid_t = X__uid_t /* unistd.h:237:17 */
+
+type Off_t = X__off64_t /* unistd.h:245:19 */
+
+type Useconds_t = X__useconds_t /* unistd.h:255:22 */
+
+type Pid_t = X__pid_t /* unistd.h:260:17 */
+
+type Intptr_t = X__intptr_t /* unistd.h:267:20 */
+
+type Socklen_t = X__socklen_t /* unistd.h:274:21 */
+
+// Define some macros helping to catch buffer overflows.
+
+// System-specific extensions.
+// System-specific extensions of <unistd.h>, Linux version.
+//    Copyright (C) 2019-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/utime/capi_linux_riscv64.go b/vendor/modernc.org/libc/utime/capi_linux_riscv64.go
new file mode 100644
index 00000000..e1131046
--- /dev/null
+++ b/vendor/modernc.org/libc/utime/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo utime/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o utime/utime_linux_riscv64.go -pkgname utime', DO NOT EDIT.
+
+package utime
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/utime/utime_linux_riscv64.go b/vendor/modernc.org/libc/utime/utime_linux_riscv64.go
new file mode 100644
index 00000000..56149f5c
--- /dev/null
+++ b/vendor/modernc.org/libc/utime/utime_linux_riscv64.go
@@ -0,0 +1,951 @@
+// Code generated by 'ccgo utime/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o utime/utime_linux_riscv64.go -pkgname utime', DO NOT EDIT.
+
+package utime
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	X_ATFILE_SOURCE    = 1
+	X_BITS_TIME64_H    = 1
+	X_BITS_TYPESIZES_H = 1
+	X_BITS_TYPES_H     = 1
+	X_DEFAULT_SOURCE   = 1
+	X_FEATURES_H       = 1
+	X_FILE_OFFSET_BITS = 64
+	X_LP64             = 1
+	X_POSIX_C_SOURCE   = 200809
+	X_POSIX_SOURCE     = 1
+	X_STDC_PREDEF_H    = 1
+	X_SYS_CDEFS_H      = 1
+	X_UTIME_H          = 1
+	Linux              = 1
+	Unix               = 1
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 5.6.6 Set File Access and Modification Times  <utime.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:10:18 */
+
+// Structure describing file times.
+type Utimbuf = struct {
+	Factime  X__time_t
+	Fmodtime X__time_t
+} /* utime.h:36:1 */
+
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/uuid/uuid/capi_linux_riscv64.go b/vendor/modernc.org/libc/uuid/uuid/capi_linux_riscv64.go
new file mode 100644
index 00000000..1439e9a1
--- /dev/null
+++ b/vendor/modernc.org/libc/uuid/uuid/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo uuid/uuid/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o uuid/uuid/uuid_linux_amd64.go -pkgname uuid', DO NOT EDIT.
+
+package uuid
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/uuid/uuid/uuid_linux_riscv64.go b/vendor/modernc.org/libc/uuid/uuid/uuid_linux_riscv64.go
new file mode 100644
index 00000000..84c78a0e
--- /dev/null
+++ b/vendor/modernc.org/libc/uuid/uuid/uuid_linux_riscv64.go
@@ -0,0 +1,1975 @@
+// Code generated by 'ccgo uuid/uuid/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o uuid/uuid/uuid_linux_amd64.go -pkgname uuid', DO NOT EDIT.
+
+package uuid
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	BIG_ENDIAN                   = 4321
+	BYTE_ORDER                   = 1234
+	CLOCK_BOOTTIME               = 7
+	CLOCK_BOOTTIME_ALARM         = 9
+	CLOCK_MONOTONIC              = 1
+	CLOCK_MONOTONIC_COARSE       = 6
+	CLOCK_MONOTONIC_RAW          = 4
+	CLOCK_PROCESS_CPUTIME_ID     = 2
+	CLOCK_REALTIME               = 0
+	CLOCK_REALTIME_ALARM         = 8
+	CLOCK_REALTIME_COARSE        = 5
+	CLOCK_TAI                    = 11
+	CLOCK_THREAD_CPUTIME_ID      = 3
+	FD_SETSIZE                   = 1024
+	LITTLE_ENDIAN                = 1234
+	PDP_ENDIAN                   = 3412
+	TIMER_ABSTIME                = 1
+	TIME_UTC                     = 1
+	UUID_STR_LEN                 = 37
+	UUID_TYPE_DCE_MD5            = 3
+	UUID_TYPE_DCE_RANDOM         = 4
+	UUID_TYPE_DCE_SECURITY       = 2
+	UUID_TYPE_DCE_SHA1           = 5
+	UUID_TYPE_DCE_TIME           = 1
+	UUID_TYPE_MASK               = 0xf
+	UUID_TYPE_SHIFT              = 4
+	UUID_VARIANT_DCE             = 1
+	UUID_VARIANT_MASK            = 0x7
+	UUID_VARIANT_MICROSOFT       = 2
+	UUID_VARIANT_NCS             = 0
+	UUID_VARIANT_OTHER           = 3
+	UUID_VARIANT_SHIFT           = 5
+	X_ATFILE_SOURCE              = 1
+	X_BITS_BYTESWAP_H            = 1
+	X_BITS_ENDIANNESS_H          = 1
+	X_BITS_ENDIAN_H              = 1
+	X_BITS_PTHREADTYPES_ARCH_H   = 1
+	X_BITS_PTHREADTYPES_COMMON_H = 1
+	X_BITS_STDINT_INTN_H         = 1
+	X_BITS_TIME64_H              = 1
+	X_BITS_TIME_H                = 1
+	X_BITS_TYPESIZES_H           = 1
+	X_BITS_TYPES_H               = 1
+	X_BITS_TYPES_LOCALE_T_H      = 1
+	X_BITS_TYPES___LOCALE_T_H    = 1
+	X_BITS_UINTN_IDENTITY_H      = 1
+	X_BSD_SIZE_T_                = 0
+	X_BSD_SIZE_T_DEFINED_        = 0
+	X_DEFAULT_SOURCE             = 1
+	X_ENDIAN_H                   = 1
+	X_FEATURES_H                 = 1
+	X_FILE_OFFSET_BITS           = 64
+	X_GCC_SIZE_T                 = 0
+	X_LP64                       = 1
+	X_POSIX_C_SOURCE             = 200809
+	X_POSIX_SOURCE               = 1
+	X_RWLOCK_INTERNAL_H          = 0
+	X_SIZET_                     = 0
+	X_SIZE_T                     = 0
+	X_SIZE_T_                    = 0
+	X_SIZE_T_DECLARED            = 0
+	X_SIZE_T_DEFINED             = 0
+	X_SIZE_T_DEFINED_            = 0
+	X_STDC_PREDEF_H              = 1
+	X_STRUCT_TIMESPEC            = 1
+	X_SYS_CDEFS_H                = 1
+	X_SYS_SELECT_H               = 1
+	X_SYS_SIZE_T_H               = 0
+	X_SYS_TIME_H                 = 1
+	X_SYS_TYPES_H                = 1
+	X_THREAD_MUTEX_INTERNAL_H    = 1
+	X_THREAD_SHARED_TYPES_H      = 1
+	X_TIME_H                     = 1
+	X_T_SIZE                     = 0
+	X_T_SIZE_                    = 0
+	X_UUID_UUID_H                = 0
+	Linux                        = 1
+	Unix                         = 1
+)
+
+// Values for the first argument to `getitimer' and `setitimer'.
+const ( /* time.h:89:1: */
+	// Timers run in real time.
+	ITIMER_REAL = 0
+	// Timers run only when the process is executing.
+	ITIMER_VIRTUAL = 1
+	// Timers run when the process is executing and when
+	//        the system is executing on behalf of the process.
+	ITIMER_PROF = 2
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Public include file for the UUID library
+//
+// Copyright (C) 1996, 1997, 1998 Theodore Ts'o.
+//
+// %Begin-Header%
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, and the entire permission notice in its entirety,
+//    including the disclaimer of warranties.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. The name of the author may not be used to endorse or promote
+//    products derived from this software without specific prior
+//    written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+// WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+// OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+// USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
+// DAMAGE.
+// %End-Header%
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX Standard: 2.6 Primitive System Data Types	<sys/types.h>
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    anymore supported.
+
+// Some user header file might have defined this before.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this works only with
+//    gcc 2.8.x and egcs.  For gcc 3.2 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// Compilers that are not clang may object to
+//        #if defined __clang__ && __has_extension(...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC has various useful declarations that can be made with the
+//    `__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonull function attribute allows to mark pointer parameters which
+//    must not be NULL.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 supports this.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// Determine the wordsize from the preprocessor defines.
+
+// Both x86-64 and x32 use the 64-bit system call interface.
+// Properties of long double type.  ldbl-96 version.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.
+
+// Both x86-64 and x32 use the 64-bit system call interface.
+// Bit size of the time_t type at glibc build time, x86-64 and x32 case.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For others, time size is word size.
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  Linux/x86-64 version.
+//    Copyright (C) 2012-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// X32 kernel interface is 64-bit.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  Generic version.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint64                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+
+type X__daddr_t = int32 /* types.h:164:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:165:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:168:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:171:12 */
+
+// Type to represent block size.
+type X__blksize_t = int64 /* types.h:174:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:179:28 */
+type X__blkcnt64_t = int64 /* types.h:180:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:183:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:184:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:187:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:188:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:191:28 */
+
+type X__ssize_t = int64 /* types.h:193:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:196:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:198:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:202:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:203:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:206:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:209:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:214:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+type U_char = X__u_char     /* types.h:33:18 */
+type U_short = X__u_short   /* types.h:34:19 */
+type U_int = X__u_int       /* types.h:35:17 */
+type U_long = X__u_long     /* types.h:36:18 */
+type Quad_t = X__quad_t     /* types.h:37:18 */
+type U_quad_t = X__u_quad_t /* types.h:38:20 */
+type Fsid_t = X__fsid_t     /* types.h:39:18 */
+type Loff_t = X__loff_t     /* types.h:42:18 */
+
+type Ino_t = X__ino64_t /* types.h:49:19 */
+
+type Dev_t = X__dev_t /* types.h:59:17 */
+
+type Gid_t = X__gid_t /* types.h:64:17 */
+
+type Mode_t = X__mode_t /* types.h:69:18 */
+
+type Nlink_t = X__nlink_t /* types.h:74:19 */
+
+type Uid_t = X__uid_t /* types.h:79:17 */
+
+type Off_t = X__off64_t /* types.h:87:19 */
+
+type Pid_t = X__pid_t /* types.h:97:17 */
+
+type Id_t = X__id_t /* types.h:103:16 */
+
+type Ssize_t = X__ssize_t /* types.h:108:19 */
+
+type Daddr_t = X__daddr_t /* types.h:114:19 */
+type Caddr_t = X__caddr_t /* types.h:115:19 */
+
+type Key_t = X__key_t /* types.h:121:17 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `clock'.
+type Clock_t = X__clock_t /* clock_t.h:7:19 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Clock ID used in clock and timer functions.
+type Clockid_t = X__clockid_t /* clockid_t.h:7:21 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Returned by `time'.
+type Time_t = X__time_t /* time_t.h:7:18 */
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Timer ID returned by `timer_create'.
+type Timer_t = X__timer_t /* timer_t.h:7:19 */
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// Old compatibility names for C types.
+type Ulong = uint64  /* types.h:148:27 */
+type Ushort = uint16 /* types.h:149:28 */
+type Uint = uint32   /* types.h:150:22 */
+
+// These size-specific names are used by some of the inet code.
+
+// Define intN_t types.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+type Int8_t = X__int8_t   /* stdint-intn.h:24:18 */
+type Int16_t = X__int16_t /* stdint-intn.h:25:19 */
+type Int32_t = X__int32_t /* stdint-intn.h:26:19 */
+type Int64_t = X__int64_t /* stdint-intn.h:27:19 */
+
+// These were defined by ISO C without the first `_'.
+type U_int8_t = X__uint8_t   /* types.h:158:19 */
+type U_int16_t = X__uint16_t /* types.h:159:20 */
+type U_int32_t = X__uint32_t /* types.h:160:20 */
+type U_int64_t = X__uint64_t /* types.h:161:20 */
+
+type Register_t = int32 /* types.h:164:13 */
+
+// It also defines `fd_set' and the FD_* macros for `select'.
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Get definition of needed basic types.
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Get __FD_* definitions.
+// Copyright (C) 1997-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.
+
+// Both x86-64 and x32 use the 64-bit system call interface.
+
+// Get sigset_t.
+
+type X__sigset_t = struct{ F__val [16]uint64 } /* __sigset_t.h:8:3 */
+
+// A set of signals to be blocked, unblocked, or waited for.
+type Sigset_t = X__sigset_t /* sigset_t.h:7:20 */
+
+// Get definition of timer specification structures.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// A time value that is accurate to the nearest
+//    microsecond but also has a range of years.
+type Timeval = struct {
+	Ftv_sec  X__time_t
+	Ftv_usec X__suseconds_t
+} /* struct_timeval.h:8:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// POSIX.1b structure for a time value.  This is like a `struct timeval' but
+//    has nanoseconds instead of microseconds.
+type Timespec = struct {
+	Ftv_sec  X__time_t
+	Ftv_nsec X__syscall_slong_t
+} /* struct_timespec.h:10:1 */
+
+type Suseconds_t = X__suseconds_t /* select.h:43:23 */
+
+// The fd_set member is required to be an array of longs.
+type X__fd_mask = int64 /* select.h:49:18 */
+
+// Some versions of <linux/posix_types.h> define this macros.
+// It's easier to assume 8-bit bytes than to get CHAR_BIT.
+
+// fd_set for select and pselect.
+type Fd_set = struct{ F__fds_bits [16]X__fd_mask } /* select.h:70:5 */
+
+// Maximum number of file descriptors in `fd_set'.
+
+// Sometimes the fd_set member is assumed to have this type.
+type Fd_mask = X__fd_mask /* select.h:77:19 */
+
+// Define some inlines helping to catch common problems.
+
+type Blksize_t = X__blksize_t /* types.h:185:21 */
+
+// Types from the Large File Support interface.
+type Blkcnt_t = X__blkcnt64_t     /* types.h:205:22 */ // Type to count number of disk blocks.
+type Fsblkcnt_t = X__fsblkcnt64_t /* types.h:209:24 */ // Type to count file system blocks.
+type Fsfilcnt_t = X__fsfilcnt64_t /* types.h:213:24 */ // Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.
+
+// Both x86-64 and x32 use the 64-bit system call interface.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_internal_list = struct {
+	F__prev uintptr
+	F__next uintptr
+} /* thread-shared-types.h:49:9 */
+
+// Type to count file system inodes.
+
+// Now add the thread types.
+// Declaration of common pthread types for all architectures.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For internal mutex and condition variable definitions.
+// Common threading primitives definitions for both POSIX and C11.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Arch-specific definitions.  Each architecture must define the following
+//    macros to define the expected sizes of pthread data types:
+//
+//    __SIZEOF_PTHREAD_ATTR_T        - size of pthread_attr_t.
+//    __SIZEOF_PTHREAD_MUTEX_T       - size of pthread_mutex_t.
+//    __SIZEOF_PTHREAD_MUTEXATTR_T   - size of pthread_mutexattr_t.
+//    __SIZEOF_PTHREAD_COND_T        - size of pthread_cond_t.
+//    __SIZEOF_PTHREAD_CONDATTR_T    - size of pthread_condattr_t.
+//    __SIZEOF_PTHREAD_RWLOCK_T      - size of pthread_rwlock_t.
+//    __SIZEOF_PTHREAD_RWLOCKATTR_T  - size of pthread_rwlockattr_t.
+//    __SIZEOF_PTHREAD_BARRIER_T     - size of pthread_barrier_t.
+//    __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+//
+//    The additional macro defines any constraint for the lock alignment
+//    inside the thread structures:
+//
+//    __LOCK_ALIGNMENT - for internal lock/futex usage.
+//
+//    Same idea but for the once locking primitive:
+//
+//    __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+// Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.
+
+// Both x86-64 and x32 use the 64-bit system call interface.
+
+// Common definition of pthread_mutex_t.
+
+type X__pthread_list_t = X__pthread_internal_list /* thread-shared-types.h:53:3 */
+
+type X__pthread_internal_slist = struct{ F__next uintptr } /* thread-shared-types.h:55:9 */
+
+type X__pthread_slist_t = X__pthread_internal_slist /* thread-shared-types.h:58:3 */
+
+// Arch-specific mutex definitions.  A generic implementation is provided
+//    by sysdeps/nptl/bits/struct_mutex.h.  If required, an architecture
+//    can override it by defining:
+//
+//    1. struct __pthread_mutex_s (used on both pthread_mutex_t and mtx_t
+//       definition).  It should contains at least the internal members
+//       defined in the generic version.
+//
+//    2. __LOCK_ALIGNMENT for any extra attribute for internal lock used with
+//       atomic operations.
+//
+//    3. The macro __PTHREAD_MUTEX_INITIALIZER used for static initialization.
+//       It should initialize the mutex internal flag.
+
+// x86 internal mutex struct definitions.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+type X__pthread_mutex_s = struct {
+	F__lock    int32
+	F__count   uint32
+	F__owner   int32
+	F__nusers  uint32
+	F__kind    int32
+	F__spins   int16
+	F__elision int16
+	F__list    X__pthread_list_t
+} /* struct_mutex.h:22:1 */
+
+// Arch-sepecific read-write lock definitions.  A generic implementation is
+//    provided by struct_rwlock.h.  If required, an architecture can override it
+//    by defining:
+//
+//    1. struct __pthread_rwlock_arch_t (used on pthread_rwlock_t definition).
+//       It should contain at least the internal members defined in the
+//       generic version.
+//
+//    2. The macro __PTHREAD_RWLOCK_INITIALIZER used for static initialization.
+//       It should initialize the rwlock internal type.
+
+// x86 internal rwlock struct definitions.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+type X__pthread_rwlock_arch_t = struct {
+	F__readers       uint32
+	F__writers       uint32
+	F__wrphase_futex uint32
+	F__writers_futex uint32
+	F__pad3          uint32
+	F__pad4          uint32
+	F__cur_writer    int32
+	F__shared        int32
+	F__rwelision     int8
+	F__pad1          [7]uint8
+	F__pad2          uint64
+	F__flags         uint32
+	F__ccgo_pad1     [4]byte
+} /* struct_rwlock.h:23:1 */
+
+// Common definition of pthread_cond_t.
+
+type X__pthread_cond_s = struct {
+	F__0            struct{ F__wseq uint64 }
+	F__8            struct{ F__g1_start uint64 }
+	F__g_refs       [2]uint32
+	F__g_size       [2]uint32
+	F__g1_orig_size uint32
+	F__wrefs        uint32
+	F__g_signals    [2]uint32
+} /* thread-shared-types.h:92:1 */
+
+// Thread identifiers.  The structure of the attribute type is not
+//    exposed on purpose.
+type Pthread_t = uint64 /* pthreadtypes.h:27:27 */
+
+// Data structures for mutex handling.  The structure of the attribute
+//    type is not exposed on purpose.
+type Pthread_mutexattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]int8
+} /* pthreadtypes.h:36:3 */
+
+// Data structure for condition variable handling.  The structure of
+//    the attribute type is not exposed on purpose.
+type Pthread_condattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]int8
+} /* pthreadtypes.h:45:3 */
+
+// Keys for thread-specific data
+type Pthread_key_t = uint32 /* pthreadtypes.h:49:22 */
+
+// Once-only execution
+type Pthread_once_t = int32 /* pthreadtypes.h:53:30 */
+
+type Pthread_attr_t1 = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [56]int8
+} /* pthreadtypes.h:56:1 */
+
+type Pthread_attr_t = Pthread_attr_t1 /* pthreadtypes.h:62:30 */
+
+type Pthread_mutex_t = struct{ F__data X__pthread_mutex_s } /* pthreadtypes.h:72:3 */
+
+type Pthread_cond_t = struct{ F__data X__pthread_cond_s } /* pthreadtypes.h:80:3 */
+
+// Data structure for reader-writer lock variable handling.  The
+//    structure of the attribute type is deliberately not exposed.
+type Pthread_rwlock_t = struct{ F__data X__pthread_rwlock_arch_t } /* pthreadtypes.h:91:3 */
+
+type Pthread_rwlockattr_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [8]int8
+} /* pthreadtypes.h:97:3 */
+
+// POSIX spinlock data type.
+type Pthread_spinlock_t = int32 /* pthreadtypes.h:103:22 */
+
+// POSIX barriers data type.  The structure of the type is
+//    deliberately not exposed.
+type Pthread_barrier_t = struct {
+	F__ccgo_pad1 [0]uint64
+	F__size      [32]int8
+} /* pthreadtypes.h:112:3 */
+
+type Pthread_barrierattr_t = struct {
+	F__ccgo_pad1 [0]uint32
+	F__size      [4]int8
+} /* pthreadtypes.h:118:3 */
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// `fd_set' type and related macros, and `select'/`pselect' declarations.
+//    Copyright (C) 1996-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>
+
+// Structure crudely representing a timezone.
+//    This is obsolete and should never be used.
+type Timezone = struct {
+	Ftz_minuteswest int32
+	Ftz_dsttime     int32
+} /* time.h:52:1 */
+
+// Type of the second argument to `getitimer' and
+//    the second and third arguments `setitimer'.
+type Itimerval = struct {
+	Fit_interval struct {
+		Ftv_sec  X__time_t
+		Ftv_usec X__suseconds_t
+	}
+	Fit_value struct {
+		Ftv_sec  X__time_t
+		Ftv_usec X__suseconds_t
+	}
+} /* time.h:105:1 */
+
+type X__itimer_which_t = int32 /* time.h:118:13 */
+
+// Convenience macros for operations on timevals.
+//    NOTE: `timercmp' does not work for >= or <=.
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	ISO C99 Standard: 7.23 Date and time	<time.h>
+
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1989-2020 Free Software Foundation, Inc.
+//
+// This file is part of GCC.
+//
+// GCC is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// GCC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// ISO C Standard:  7.17  Common definitions  <stddef.h>
+
+// Any one of these symbols __need_* means that GNU libc
+//    wants us just to define one data type.  So don't define
+//    the symbols that indicate this file's entire job has been done.
+
+// This avoids lossage on SunOS but only if stdtypes.h comes first.
+//    There's no way to win with the other order!  Sun lossage.
+
+// Sequent's header files use _PTRDIFF_T_ in some conflicting way.
+//    Just ignore it.
+
+// On VxWorks, <type/vxTypesBase.h> may have defined macros like
+//    _TYPE_size_t which will typedef size_t.  fixincludes patched the
+//    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
+//    not defined, and so that defining this macro defines _GCC_SIZE_T.
+//    If we find that the macros are still defined at this point, we must
+//    invoke them so that the type is defined as expected.
+
+// In case nobody has defined these types, but we aren't running under
+//    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
+//    __WCHAR_TYPE__ have reasonable values.  This can happen if the
+//    parts of GCC is compiled by an older compiler, that actually
+//    include gstddef.h, such as collect2.
+
+// Signed type of difference of two pointers.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Unsigned type of `sizeof' something.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// Wide character type.
+//    Locale-writers should change this as necessary to
+//    be big enough to hold unique values not between 0 and 127,
+//    and not (wchar_t) -1, for each defined multibyte character.
+
+// Define this type if we are doing the whole job,
+//    or if we want this type in particular.
+
+// A null pointer constant.
+
+// This defines CLOCKS_PER_SEC, which is the number of processor clock
+//    ticks per second, and possibly a number of other constants.
+// System-dependent timing definitions.  Linux version.
+//    Copyright (C) 1996-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <time.h> instead.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// ISO/IEC 9899:1999 7.23.1: Components of time
+//    The macro `CLOCKS_PER_SEC' is an expression with type `clock_t' that is
+//    the number per second of the value returned by the `clock' function.
+// CAE XSH, Issue 4, Version 2: <time.h>
+//    The value of CLOCKS_PER_SEC is required to be 1 million on all
+//    XSI-conformant systems.
+
+// Identifier for system-wide realtime clock.
+// Monotonic system-wide clock.
+// High-resolution timer from the CPU.
+// Thread-specific CPU-time clock.
+// Monotonic system-wide clock, not adjusted for frequency scaling.
+// Identifier for system-wide realtime clock, updated only on ticks.
+// Monotonic system-wide clock, updated only on ticks.
+// Monotonic system-wide clock that includes time spent in suspension.
+// Like CLOCK_REALTIME but also wakes suspended system.
+// Like CLOCK_BOOTTIME but also wakes suspended system.
+// Like CLOCK_REALTIME but in International Atomic Time.
+
+// Flag to indicate time is absolute.
+
+// Many of the typedefs and structs whose official home is this header
+//    may also need to be defined by other headers.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// ISO C `broken-down time' structure.
+type Tm = struct {
+	Ftm_sec      int32
+	Ftm_min      int32
+	Ftm_hour     int32
+	Ftm_mday     int32
+	Ftm_mon      int32
+	Ftm_year     int32
+	Ftm_wday     int32
+	Ftm_yday     int32
+	Ftm_isdst    int32
+	F__ccgo_pad1 [4]byte
+	Ftm_gmtoff   int64
+	Ftm_zone     uintptr
+} /* struct_tm.h:7:1 */
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// NB: Include guard matches what <linux/time.h> uses.
+
+// POSIX.1b structure for timer start values and intervals.
+type Itimerspec = struct {
+	Fit_interval struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+	Fit_value struct {
+		Ftv_sec  X__time_t
+		Ftv_nsec X__syscall_slong_t
+	}
+} /* struct_itimerspec.h:8:1 */
+
+// Definition of locale_t.
+//    Copyright (C) 2017-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition of struct __locale_struct and __locale_t.
+//    Copyright (C) 1997-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// POSIX.1-2008: the locale_t type, representing a locale context
+//    (implementation-namespace version).  This type should be treated
+//    as opaque by applications; some details are exposed for the sake of
+//    efficiency in e.g. ctype functions.
+
+type X__locale_struct = struct {
+	F__locales       [13]uintptr
+	F__ctype_b       uintptr
+	F__ctype_tolower uintptr
+	F__ctype_toupper uintptr
+	F__names         [13]uintptr
+} /* __locale_t.h:28:1 */
+
+type X__locale_t = uintptr /* __locale_t.h:42:32 */
+
+type Locale_t = X__locale_t /* locale_t.h:24:20 */
+
+type Uuid_t = [16]uint8 /* uuid.h:44:23 */
+
+var _ int8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/wctype/capi_linux_riscv64.go b/vendor/modernc.org/libc/wctype/capi_linux_riscv64.go
new file mode 100644
index 00000000..ca76e233
--- /dev/null
+++ b/vendor/modernc.org/libc/wctype/capi_linux_riscv64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo wctype/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o wctype/wctype_linux_riscv64.go -pkgname wctype', DO NOT EDIT.
+
+package wctype
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/wctype/wctype_linux_riscv64.go b/vendor/modernc.org/libc/wctype/wctype_linux_riscv64.go
new file mode 100644
index 00000000..c6785405
--- /dev/null
+++ b/vendor/modernc.org/libc/wctype/wctype_linux_riscv64.go
@@ -0,0 +1,1121 @@
+// Code generated by 'ccgo wctype/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o wctype/wctype_linux_riscv64.go -pkgname wctype', DO NOT EDIT.
+
+package wctype
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	WEOF                      = 4294967295
+	X_ATFILE_SOURCE           = 1
+	X_BITS_ENDIANNESS_H       = 1
+	X_BITS_ENDIAN_H           = 1
+	X_BITS_TIME64_H           = 1
+	X_BITS_TYPESIZES_H        = 1
+	X_BITS_TYPES_H            = 1
+	X_BITS_TYPES_LOCALE_T_H   = 1
+	X_BITS_TYPES___LOCALE_T_H = 1
+	X_BITS_WCTYPE_WCHAR_H     = 1
+	X_DEFAULT_SOURCE          = 1
+	X_FEATURES_H              = 1
+	X_FILE_OFFSET_BITS        = 64
+	X_LP64                    = 1
+	X_POSIX_C_SOURCE          = 200809
+	X_POSIX_SOURCE            = 1
+	X_STDC_PREDEF_H           = 1
+	X_SYS_CDEFS_H             = 1
+	X_WCTYPE_H                = 1
+	X_WINT_T                  = 1
+	Linux                     = 1
+	Unix                      = 1
+)
+
+// The characteristics are stored always in network byte order (big
+//    endian).  We define the bit value interpretations here dependent on the
+//    machine's byte order.
+
+// Endian macros for string.h functions
+//    Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <http://www.gnu.org/licenses/>.
+
+// Definitions for byte order, according to significance of bytes,
+//    from low addresses to high addresses.  The value is what you get by
+//    putting '4' in the most significant byte, '3' in the second most
+//    significant byte, '2' in the second least significant byte, and '1'
+//    in the least significant byte, and then writing down one digit for
+//    each byte, starting with the byte at the lowest address at the left,
+//    and proceeding to the byte with the highest address at the right.
+
+// This file defines `__BYTE_ORDER' for the particular machine.
+
+// RISC-V is little-endian.
+
+// Some machines may need to use a different endianness for floating point
+//    values.
+
+const ( /* wctype-wchar.h:56:1: */
+	X__ISwupper  = 0  // UPPERCASE.
+	X__ISwlower  = 1  // lowercase.
+	X__ISwalpha  = 2  // Alphabetic.
+	X__ISwdigit  = 3  // Numeric.
+	X__ISwxdigit = 4  // Hexadecimal numeric.
+	X__ISwspace  = 5  // Whitespace.
+	X__ISwprint  = 6  // Printing.
+	X__ISwgraph  = 7  // Graphical.
+	X__ISwblank  = 8  // Blank (usually SPC and TAB).
+	X__ISwcntrl  = 9  // Control character.
+	X__ISwpunct  = 10 // Punctuation.
+	X__ISwalnum  = 11 // Alphanumeric.
+
+	X_ISwupper  = 16777216    // UPPERCASE.
+	X_ISwlower  = 33554432    // lowercase.
+	X_ISwalpha  = 67108864    // Alphabetic.
+	X_ISwdigit  = 134217728   // Numeric.
+	X_ISwxdigit = 268435456   // Hexadecimal numeric.
+	X_ISwspace  = 536870912   // Whitespace.
+	X_ISwprint  = 1073741824  // Printing.
+	X_ISwgraph  = -2147483648 // Graphical.
+	X_ISwblank  = 65536       // Blank (usually SPC and TAB).
+	X_ISwcntrl  = 131072      // Control character.
+	X_ISwpunct  = 262144      // Punctuation.
+	X_ISwalnum  = 524288
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	ISO C99 Standard: 7.25
+//	Wide character classification and mapping utilities  <wctype.h>
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// These are defined by the user (or the compiler)
+//    to specify the desired environment:
+//
+//    __STRICT_ANSI__	ISO Standard C.
+//    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+//    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
+//    __STDC_WANT_LIB_EXT2__
+// 			Extensions to ISO C99 from TR 27431-2:2010.
+//    __STDC_WANT_IEC_60559_BFP_EXT__
+// 			Extensions to ISO C11 from TS 18661-1:2014.
+//    __STDC_WANT_IEC_60559_FUNCS_EXT__
+// 			Extensions to ISO C11 from TS 18661-4:2015.
+//    __STDC_WANT_IEC_60559_TYPES_EXT__
+// 			Extensions to ISO C11 from TS 18661-3:2015.
+//    __STDC_WANT_IEC_60559_EXT__
+// 			ISO C2X interfaces defined only in Annex F.
+//
+//    _POSIX_SOURCE	IEEE Std 1003.1.
+//    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
+// 			if >=199309L, add IEEE Std 1003.1b-1993;
+// 			if >=199506L, add IEEE Std 1003.1c-1995;
+// 			if >=200112L, all of IEEE 1003.1-2004
+// 			if >=200809L, all of IEEE 1003.1-2008
+//    _XOPEN_SOURCE	Includes POSIX and XPG things.  Set to 500 if
+// 			Single Unix conformance is wanted, to 600 for the
+// 			sixth revision, to 700 for the seventh revision.
+//    _XOPEN_SOURCE_EXTENDED XPG things and X/Open Unix extensions.
+//    _LARGEFILE_SOURCE	Some more functions for correct standard I/O.
+//    _LARGEFILE64_SOURCE	Additional functionality from LFS for large files.
+//    _FILE_OFFSET_BITS=N	Select default filesystem interface.
+//    _ATFILE_SOURCE	Additional *at interfaces.
+//    _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    _GNU_SOURCE		All of the above, plus GNU extensions.
+//    _DEFAULT_SOURCE	The default set of features (taking precedence over
+// 			__STRICT_ANSI__).
+//
+//    _FORTIFY_SOURCE	Add security hardening to many library functions.
+// 			Set to 1 or 2; 2 performs stricter checks than 1.
+//
+//    _REENTRANT, _THREAD_SAFE
+// 			Obsolete; equivalent to _POSIX_C_SOURCE=199506L.
+//
+//    The `-ansi' switch to the GNU C compiler, and standards conformance
+//    options such as `-std=c99', define __STRICT_ANSI__.  If none of
+//    these are defined, or if _DEFAULT_SOURCE is defined, the default is
+//    to have _POSIX_SOURCE set to one and _POSIX_C_SOURCE set to
+//    200809L, as well as enabling miscellaneous functions from BSD and
+//    SVID.  If more than one of these are defined, they accumulate.  For
+//    example __STRICT_ANSI__, _POSIX_SOURCE and _POSIX_C_SOURCE together
+//    give you ISO C, 1003.1, and 1003.2, but nothing else.
+//
+//    These are defined by this file and are used by the
+//    header files to decide what to declare or define:
+//
+//    __GLIBC_USE (F)	Define things from feature set F.  This is defined
+// 			to 1 or 0; the subsequent macros are either defined
+// 			or undefined, and those tests should be moved to
+// 			__GLIBC_USE.
+//    __USE_ISOC11		Define ISO C11 things.
+//    __USE_ISOC99		Define ISO C99 things.
+//    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
+//    __USE_ISOCXX11	Define ISO C++11 things.
+//    __USE_POSIX		Define IEEE Std 1003.1 things.
+//    __USE_POSIX2		Define IEEE Std 1003.2 things.
+//    __USE_POSIX199309	Define IEEE Std 1003.1, and .1b things.
+//    __USE_POSIX199506	Define IEEE Std 1003.1, .1b, .1c and .1i things.
+//    __USE_XOPEN		Define XPG things.
+//    __USE_XOPEN_EXTENDED	Define X/Open Unix things.
+//    __USE_UNIX98		Define Single Unix V2 things.
+//    __USE_XOPEN2K        Define XPG6 things.
+//    __USE_XOPEN2KXSI     Define XPG6 XSI things.
+//    __USE_XOPEN2K8       Define XPG7 things.
+//    __USE_XOPEN2K8XSI    Define XPG7 XSI things.
+//    __USE_LARGEFILE	Define correct standard I/O things.
+//    __USE_LARGEFILE64	Define LFS things with separate names.
+//    __USE_FILE_OFFSET64	Define 64bit interface as default.
+//    __USE_MISC		Define things from 4.3BSD or System V Unix.
+//    __USE_ATFILE		Define *at interfaces and AT_* constants for them.
+//    __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
+// 			MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
+//    __USE_GNU		Define GNU extensions.
+//    __USE_FORTIFY_LEVEL	Additional security measures used, according to level.
+//
+//    The macros `__GNU_LIBRARY__', `__GLIBC__', and `__GLIBC_MINOR__' are
+//    defined by this file unconditionally.  `__GNU_LIBRARY__' is provided
+//    only for compatibility.  All new code should use the other symbols
+//    to test for features.
+//
+//    All macros listed above as possibly being defined by this file are
+//    explicitly undefined if they are not explicitly defined.
+//    Feature-test macros that are not defined by the user or compiler
+//    but are implied by the other feature-test macros defined (or by the
+//    lack of any definitions) are defined by the file.
+//
+//    ISO C feature test macros depend on the definition of the macro
+//    when an affected header is included, not when the first system
+//    header is included, and so they are handled in
+//    <bits/libc-header-start.h>, which does not have a multiple include
+//    guard.  Feature test macros that can be handled from the first
+//    system header included are handled here.
+
+// Undefine everything, so we get a clean slate.
+
+// Suppress kernel-name space pollution unless user expressedly asks
+//    for it.
+
+// Convenience macro to test the version of gcc.
+//    Use like this:
+//    #if __GNUC_PREREQ (2,8)
+//    ... code requiring gcc 2.8 or later ...
+//    #endif
+//    Note: only works for GCC 2.0 and later, because __GNUC_MINOR__ was
+//    added in 2.0.
+
+// Similarly for clang.  Features added to GCC after version 4.2 may
+//    or may not also be available in clang, and clang's definitions of
+//    __GNUC(_MINOR)__ are fixed at 4 and 2 respectively.  Not all such
+//    features can be queried via __has_extension/__has_feature.
+
+// Whether to use feature set F.
+
+// _BSD_SOURCE and _SVID_SOURCE are deprecated aliases for
+//    _DEFAULT_SOURCE.  If _DEFAULT_SOURCE is present we do not
+//    issue a warning; the expectation is that the source is being
+//    transitioned to use the new macro.
+
+// If _GNU_SOURCE was defined by the user, turn on all the other features.
+
+// If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
+//    define _DEFAULT_SOURCE.
+
+// This is to enable the ISO C2X extension.
+
+// This is to enable the ISO C11 extension.
+
+// This is to enable the ISO C99 extension.
+
+// This is to enable the ISO C90 Amendment 1:1995 extension.
+
+// If none of the ANSI/POSIX macros are defined, or if _DEFAULT_SOURCE
+//    is defined, use POSIX.1-2008 (or another version depending on
+//    _XOPEN_SOURCE).
+
+// Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
+//    defined in all multithreaded code.  GNU libc has not required this
+//    for many years.  We now treat them as compatibility synonyms for
+//    _POSIX_C_SOURCE=199506L, which is the earliest level of POSIX with
+//    comprehensive support for multithreaded code.  Using them never
+//    lowers the selected level of POSIX conformance, only raises it.
+
+// Features part to handle 64-bit time_t support.
+//    Copyright (C) 2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We need to know the word size in order to check the time size.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// The function 'gets' existed in C89, but is impossible to use
+//    safely.  It has been removed from ISO C11 and ISO C++14.  Note: for
+//    compatibility with various implementations of <cstdio>, this test
+//    must consider only the value of __cplusplus when compiling C++.
+
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
+// Get definitions of __STDC_* predefined macros, if the compiler has
+//    not preincluded this header automatically.
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This macro indicates that the installed library is the GNU C Library.
+//    For historic reasons the value now is 6 and this will stay from now
+//    on.  The use of this variable is deprecated.  Use __GLIBC__ and
+//    __GLIBC_MINOR__ now (see below) when you want to test for a specific
+//    GNU C library version and use the values in <gnu/lib-names.h> to get
+//    the sonames of the shared libraries.
+
+// Major and minor version number of the GNU C library package.  Use
+//    these macros to test for features in specific releases.
+
+// This is here only because every header file already includes this one.
+// Copyright (C) 1992-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// We are almost always included from features.h.
+
+// The GNU libc does not support any K&R compilers or the traditional mode
+//    of ISO C compilers anymore.  Check for some of the combinations not
+//    supported anymore.
+
+// Some user header file might have defined this before.
+
+// Compilers that lack __has_attribute may object to
+//        #if defined __has_attribute && __has_attribute (...)
+//    even though they do not need to evaluate the right-hand side of the &&.
+//    Similarly for __has_builtin, etc.
+
+// All functions, except those with callbacks or those that
+//    synchronize memory, are leaf functions.
+
+// GCC can always grok prototypes.  For C++ programs we add throw()
+//    to help it optimize the function calls.  But this only works with
+//    gcc 2.8.x and egcs.  For gcc 3.4 and up we even mark C functions
+//    as non-throwing using a function attribute since programs can use
+//    the -fexceptions options for C code as well.
+
+// These two macros are not used in glibc anymore.  They are kept here
+//    only because some other projects expect the macros to be defined.
+
+// For these things, GCC behaves the ANSI way normally,
+//    and the non-ANSI way under -traditional.
+
+// This is not a typedef so `const __ptr_t' does the right thing.
+
+// C++ needs to know that types and declarations are C, not C++.
+
+// Fortify support.
+
+// Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available.
+
+// Support for flexible arrays.
+//    Headers that should use flexible arrays only if they're "real"
+//    (e.g. only if they won't affect sizeof()) should test
+//    #if __glibc_c99_flexarr_available.
+
+// __asm__ ("xyz") is used throughout the headers to rename functions
+//    at the assembly language level.  This is wrapped by the __REDIRECT
+//    macro, in order to support compilers that can do this some other
+//    way.  When compilers don't support asm-names at all, we have to do
+//    preprocessor tricks instead (which don't have exactly the right
+//    semantics, but it's the best we can do).
+//
+//    Example:
+//    int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid);
+
+//
+// #elif __SOME_OTHER_COMPILER__
+//
+// # define __REDIRECT(name, proto, alias) name proto; 	_Pragma("let " #name " = " #alias)
+
+// GCC and clang have various useful declarations that can be made with
+//    the '__attribute__' syntax.  All of the ways we use this do fine if
+//    they are omitted for compilers that don't understand it.
+
+// At some point during the gcc 2.96 development the `malloc' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Tell the compiler which arguments to an allocation function
+//    indicate the size of the allocation.
+
+// At some point during the gcc 2.96 development the `pure' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// This declaration tells the compiler that the value is constant.
+
+// At some point during the gcc 3.1 development the `used' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+
+// Since version 3.2, gcc allows marking deprecated functions.
+
+// Since version 4.5, gcc also allows one to specify the message printed
+//    when a deprecated function is used.  clang claims to be gcc 4.2, but
+//    may also support this feature.
+
+// At some point during the gcc 2.8 development the `format_arg' attribute
+//    for functions was introduced.  We don't want to use it unconditionally
+//    (although this would be possible) since it generates warnings.
+//    If several `format_arg' attributes are given for the same function, in
+//    gcc-3.0 and older, all but the last one are ignored.  In newer gccs,
+//    all designated arguments are considered.
+
+// At some point during the gcc 2.97 development the `strfmon' format
+//    attribute for functions was introduced.  We don't want to use it
+//    unconditionally (although this would be possible) since it
+//    generates warnings.
+
+// The nonnull function attribute marks pointer parameters that
+//    must not be NULL.
+
+// The returns_nonnull function attribute marks the return type of the function
+//    as always being non-null.
+
+// If fortification mode, we warn about unused results of certain
+//    function calls which can lead to problems.
+
+// Forces a function to be always inlined.
+// The Linux kernel defines __always_inline in stddef.h (283d7573), and
+//    it conflicts with this definition.  Therefore undefine it first to
+//    allow either header to be included first.
+
+// Associate error messages with the source location of the call site rather
+//    than with the source location inside the function.
+
+// GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+//    inline semantics, unless -fgnu89-inline is used.  Using __GNUC_STDC_INLINE__
+//    or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
+//    older than 4.3 may define these macros and still not guarantee GNU inlining
+//    semantics.
+//
+//    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
+//    __GNUC_GNU_INLINE__ macro definitions.
+
+// GCC 4.3 and above allow passing all anonymous arguments of an
+//    __extern_always_inline function to some other vararg function.
+
+// It is possible to compile containing GCC extensions even if GCC is
+//    run in pedantic mode if the uses are carefully marked using the
+//    `__extension__' keyword.  But this is not generally available before
+//    version 2.8.
+
+// __restrict is known in EGCS 1.2 and above, and in clang.
+//    It works also in C++ mode (outside of arrays), but only when spelled
+//    as '__restrict', not 'restrict'.
+
+// ISO C99 also allows to declare arrays as non-overlapping.  The syntax is
+//      array_name[restrict]
+//    GCC 3.1 and clang support this.
+//    This syntax is not usable in C++ mode.
+
+// Describes a char array whose address can safely be passed as the first
+//    argument to strncpy and strncat, as the char array is not necessarily
+//    a NUL-terminated string.
+
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// The #ifndef lets Gnulib avoid including these on non-glibc
+//    platforms, where the includes typically do not exist.
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Properties of long double type.  ldbl-128 version.
+//    Copyright (C) 2016-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License  published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// long double is distinct from double, so there is nothing to
+//    define here.
+
+// __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
+//    intended for use in preprocessor macros.
+//
+//    Note: MESSAGE must be a _single_ string; concatenation of string
+//    literals is not supported.
+
+// Generic selection (ISO C11) is a C-only feature, available in GCC
+//    since version 4.9.  Previous versions do not provide generic
+//    selection, even though they might set __STDC_VERSION__ to 201112L,
+//    when in -std=c11 mode.  Thus, we must check for !defined __GNUC__
+//    when testing __STDC_VERSION__ for generic selection support.
+//    On the other hand, Clang also defines __GNUC__, so a clang-specific
+//    check is required to enable the use of generic selection.
+
+// Designates a 1-based positional argument ref-index of pointer type
+//    that can be used to access size-index elements of the pointed-to
+//    array according to access mode, or at least one element when
+//    size-index is not provided:
+//      access (access-mode, <ref-index> [, <size-index>])
+
+// Designates dealloc as a function to call to deallocate objects
+//    allocated by the declared function.
+
+// Specify that a function such as setjmp or vfork may return
+//    twice.
+
+// If we don't have __REDIRECT, prototypes will be missing if
+//    __USE_FILE_OFFSET64 but not __USE_LARGEFILE[64].
+
+// Decide whether we can define 'extern inline' functions in headers.
+
+// This is here only because every header file already includes this one.
+//    Get the definitions of all the appropriate `__stub_FUNCTION' symbols.
+//    <gnu/stubs.h> contains `#define __stub_FUNCTION' when FUNCTION is a stub
+//    that will always return failure (and set errno to ENOSYS).
+// This file is automatically generated.
+//    This file selects the right generated file of `__stub_FUNCTION' macros
+//    based on the architecture being compiled for.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// This file is automatically generated.
+//    It defines a symbol `__stub_FUNCTION' for each function
+//    in the C library which is a stub, meaning it will fail
+//    every time called, usually setting errno to ENOSYS.
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// Copyright (C) 1991-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, RISC-V case.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.  RISC-V version.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// RV32 and RV64 both use 64-bit time_t
+
+// Convenience types.
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
+
+// Fixed-size types, underlying types depend on word size and compiler.
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
+
+// Smallest types with at least a given width.
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
+
+// quad_t is also 64 bits.
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
+
+// Largest integral types.
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
+
+// The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
+//    macros for each of the OS types we define below.  The definitions
+//    of those macros must use the following macros for underlying types.
+//    We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
+//    variants of each of the following integer types on this machine.
+//
+// 	16		-- "natural" 16-bit type (always short)
+// 	32		-- "natural" 32-bit type (always int)
+// 	64		-- "natural" 64-bit type (long or long long)
+// 	LONG32		-- 32-bit type, traditionally long
+// 	QUAD		-- 64-bit type, traditionally long long
+// 	WORD		-- natural type of __WORDSIZE bits (int or long)
+// 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
+//
+//    We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+//    conventional uses of `long' or `long long' type modifiers match the
+//    types we define, even when a less-adorned type would be the same size.
+//    This matters for (somewhat) portably writing printf/scanf formats for
+//    these types, where using the appropriate l or ll format modifiers can
+//    make the typedefs and the formats match up across all GNU platforms.  If
+//    we used `long' when it's 64 bits where `long long' is expected, then the
+//    compiler would warn about the formats not matching the argument types,
+//    and the programmer changing them to shut up the compiler would break the
+//    program's portability.
+//
+//    Here we assume what is presently the case in all the GCC configurations
+//    we support: long long is always 64 bits, long is always word/address size,
+//    and int is always 32 bits.
+
+// No need to mark the typedef with __extension__.
+// bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
+//    Copyright (C) 2011-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
+// See <bits/types.h> for the meaning of these macros.  This file exists so
+//    that <bits/types.h> need not vary across different GNU platforms.
+
+// Tell the libc code that off_t and off64_t are actually the same type
+//    for all ABI purposes, even if possibly expressed as different base types
+//    for C type-checking purposes.
+
+// Same for ino_t and ino64_t.
+
+// And for __rlim_t and __rlim64_t.
+
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
+// And for getitimer, setitimer and rusage
+
+// Number of descriptors that can fit in an `fd_set'.
+
+// bits/time64.h -- underlying types for __time64_t.  RISC-V version.
+//    Copyright (C) 2020-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
+
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+type X__suseconds64_t = int64              /* types.h:163:33 */
+
+type X__daddr_t = int32 /* types.h:165:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:166:25 */ // Type of an IPC key.
+
+// Clock ID used in clock and timer functions.
+type X__clockid_t = int32 /* types.h:169:29 */
+
+// Timer ID returned by `timer_create'.
+type X__timer_t = uintptr /* types.h:172:12 */
+
+// Type to represent block size.
+type X__blksize_t = int32 /* types.h:175:29 */
+
+// Types from the Large File Support interface.
+
+// Type to count number of disk blocks.
+type X__blkcnt_t = int64   /* types.h:180:28 */
+type X__blkcnt64_t = int64 /* types.h:181:30 */
+
+// Type to count file system blocks.
+type X__fsblkcnt_t = uint64   /* types.h:184:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:185:32 */
+
+// Type to count file system nodes.
+type X__fsfilcnt_t = uint64   /* types.h:188:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:189:32 */
+
+// Type of miscellaneous file system fields.
+type X__fsword_t = int64 /* types.h:192:28 */
+
+type X__ssize_t = int64 /* types.h:194:27 */ // Type of a byte count, or error.
+
+// Signed long type used in system calls.
+type X__syscall_slong_t = int64 /* types.h:197:33 */
+// Unsigned long type used in system calls.
+type X__syscall_ulong_t = uint64 /* types.h:199:33 */
+
+// These few don't really vary by system, they always correspond
+//    to one of the other defined types.
+type X__loff_t = X__off64_t /* types.h:203:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:204:14 */
+
+// Duplicates info from stdint.h but this is used in unistd.h.
+type X__intptr_t = int64 /* types.h:207:25 */
+
+// Duplicate info from sys/socket.h.
+type X__socklen_t = uint32 /* types.h:210:23 */
+
+// C99: An integer type that can be accessed as an atomic entity,
+//    even in the presence of asynchronous interrupts.
+//    It is not currently necessary for this to be machine-specific.
+type X__sig_atomic_t = int32 /* types.h:215:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+
+// Some versions of stddef.h provide wint_t, even though neither the
+//    C nor C++ standards, nor POSIX, specifies this.  We assume that
+//    stddef.h will define the macro _WINT_T if and only if it provides
+//    wint_t, and conversely, that it will avoid providing wint_t if
+//    _WINT_T is already defined.
+
+// Integral type unchanged by default argument promotions that can
+//    hold any value corresponding to members of the extended character
+//    set, as well as at least one value that does not correspond to any
+//    member of the extended character set.
+
+type Wint_t = uint32 /* wint_t.h:20:23 */
+
+// Constant expression of type `wint_t' whose value does not correspond
+//    to any member of the extended character set.
+
+// Some definitions from this header also appear in <wchar.h> in
+//    Unix98 mode.
+// Copyright (C) 1996-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+//	ISO C99 Standard: 7.25
+//	Wide character classification and mapping utilities  <wctype.h>
+
+// bits/types.h -- definitions of __*_t types underlying *_t types.
+//    Copyright (C) 2002-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Never include this file directly; use <sys/types.h> instead.
+
+// The definitions in this header are specified to appear in <wctype.h>
+//    in ISO C99, but in <wchar.h> in Unix98.  _GNU_SOURCE follows C99.
+
+// Scalar type that can hold values which represent locale-specific
+//    character classifications.
+type Wctype_t = uint64 /* wctype-wchar.h:38:27 */
+
+// Extensible wide-character mapping functions: 7.15.3.2.
+
+// Scalar type that can hold values which represent locale-specific
+//    character mappings.
+type Wctrans_t = uintptr /* wctype.h:48:25 */
+
+// POSIX.1-2008 extended locale interface (see locale.h).
+// Definition of locale_t.
+//    Copyright (C) 2017-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Definition of struct __locale_struct and __locale_t.
+//    Copyright (C) 1997-2021 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// POSIX.1-2008: the locale_t type, representing a locale context
+//    (implementation-namespace version).  This type should be treated
+//    as opaque by applications; some details are exposed for the sake of
+//    efficiency in e.g. ctype functions.
+
+type X__locale_struct = struct {
+	F__locales       [13]uintptr
+	F__ctype_b       uintptr
+	F__ctype_tolower uintptr
+	F__ctype_toupper uintptr
+	F__names         [13]uintptr
+} /* __locale_t.h:28:1 */
+
+type X__locale_t = uintptr /* __locale_t.h:42:32 */
+
+type Locale_t = X__locale_t /* locale_t.h:24:20 */
+
+var _ uint8 /* gen.c:2:13: */