10 files changed, 13 insertions, 2 deletions
diff --git a/vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go b/vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go
index 87ae9d2a..c9b69937 100644
--- a/vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go
+++ b/vendor/golang.org/x/sys/plan9/pwd_go15_plan9.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.5
 // +build go1.5
 
 package plan9
diff --git a/vendor/golang.org/x/sys/plan9/pwd_plan9.go b/vendor/golang.org/x/sys/plan9/pwd_plan9.go
index c07c798b..98bf56b7 100644
--- a/vendor/golang.org/x/sys/plan9/pwd_plan9.go
+++ b/vendor/golang.org/x/sys/plan9/pwd_plan9.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build !go1.5
 // +build !go1.5
 
 package plan9
diff --git a/vendor/golang.org/x/sys/plan9/race.go b/vendor/golang.org/x/sys/plan9/race.go
index 42edd93e..62377d2f 100644
--- a/vendor/golang.org/x/sys/plan9/race.go
+++ b/vendor/golang.org/x/sys/plan9/race.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build plan9 && race
 // +build plan9,race
 
 package plan9
diff --git a/vendor/golang.org/x/sys/plan9/race0.go b/vendor/golang.org/x/sys/plan9/race0.go
index c89cf8fc..f8da3087 100644
--- a/vendor/golang.org/x/sys/plan9/race0.go
+++ b/vendor/golang.org/x/sys/plan9/race0.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build plan9 && !race
 // +build plan9,!race
 
 package plan9
diff --git a/vendor/golang.org/x/sys/plan9/str.go b/vendor/golang.org/x/sys/plan9/str.go
index 4f7f9ad7..55fa8d02 100644
--- a/vendor/golang.org/x/sys/plan9/str.go
+++ b/vendor/golang.org/x/sys/plan9/str.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build plan9
 // +build plan9
 
 package plan9
diff --git a/vendor/golang.org/x/sys/plan9/syscall.go b/vendor/golang.org/x/sys/plan9/syscall.go
index e7363a2f..602473cb 100644
--- a/vendor/golang.org/x/sys/plan9/syscall.go
+++ b/vendor/golang.org/x/sys/plan9/syscall.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build plan9
 // +build plan9
 
 // Package plan9 contains an interface to the low-level operating system
diff --git a/vendor/golang.org/x/sys/plan9/syscall_plan9.go b/vendor/golang.org/x/sys/plan9/syscall_plan9.go
index 84e14714..723b1f40 100644
--- a/vendor/golang.org/x/sys/plan9/syscall_plan9.go
+++ b/vendor/golang.org/x/sys/plan9/syscall_plan9.go
@@ -132,8 +132,10 @@ func Pipe(p []int) (err error) {
 	}
 	var pp [2]int32
 	err = pipe(&pp)
-	p[0] = int(pp[0])
-	p[1] = int(pp[1])
+	if err == nil {
+		p[0] = int(pp[0])
+		p[1] = int(pp[1])
+	}
 	return
 }
 
diff --git a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_386.go b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_386.go
index 6819bc20..3f40b9bd 100644
--- a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_386.go
+++ b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_386.go
@@ -1,6 +1,7 @@
 // go run mksyscall.go -l32 -plan9 -tags plan9,386 syscall_plan9.go
 // Code generated by the command above; see README.md. DO NOT EDIT.
 
+//go:build plan9 && 386
 // +build plan9,386
 
 package plan9
diff --git a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_amd64.go b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_amd64.go
index 418abbbf..0e6a96aa 100644
--- a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_amd64.go
+++ b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_amd64.go
@@ -1,6 +1,7 @@
 // go run mksyscall.go -l32 -plan9 -tags plan9,amd64 syscall_plan9.go
 // Code generated by the command above; see README.md. DO NOT EDIT.
 
+//go:build plan9 && amd64
 // +build plan9,amd64
 
 package plan9
diff --git a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_arm.go b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_arm.go
index 3e8a1a58..244c501b 100644
--- a/vendor/golang.org/x/sys/plan9/zsyscall_plan9_arm.go
+++ b/vendor/golang.org/x/sys/plan9/zsyscall_plan9_arm.go
@@ -1,6 +1,7 @@
 // go run mksyscall.go -l32 -plan9 -tags plan9,arm syscall_plan9.go
 // Code generated by the command above; see README.md. DO NOT EDIT.
 
+//go:build plan9 && arm
 // +build plan9,arm
 
 package plan9