cmd/cgo: report exec errors a bit more clearly

Change-Id: I0e6bebf0e2e6efdef4be880e0c6c7451b938924b Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/949417 Reviewed-by: Katie Hockman <[email protected]> Reviewed-by: Jay Conrod <[email protected]> Reviewed-by: Ian Lance Taylor <[email protected]> Reviewed-on: https://go-review.googlesource.com/c/go/+/284781 Run-TryBot: Roland Shoemaker <[email protected]> Reviewed-by: Ian Lance Taylor <[email protected]> Trust: Roland Shoemaker <[email protected]>
golang · Jan 21, 2021 · 5a8a226 · 5a8a226
1 parent 46e2e2e
commit 5a8a226
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/cmd/cgo/util.go b/src/cmd/cgo/util.go
@@ -63,7 +63,7 @@ func run(stdin []byte, argv []string) (stdout, stderr []byte, ok bool) {
 	p.Env = append(os.Environ(), "TERM=dumb")
 	err := p.Run()
 	if _, ok := err.(*exec.ExitError); err != nil && !ok {
-		fatalf("%s", err)
+		fatalf("exec %s: %s", argv[0], err)
 	}
 	ok = p.ProcessState.Success()
 	stdout, stderr = bout.Bytes(), berr.Bytes()
@@ -88,7 +88,7 @@ func fatalf(msg string, args ...interface{}) {
 	// If we've already printed other errors, they might have
 	// caused the fatal condition. Assume they're enough.
 	if nerrors == 0 {
-		fmt.Fprintf(os.Stderr, msg+"\n", args...)
+		fmt.Fprintf(os.Stderr, "cgo: "+msg+"\n", args...)
 	}
 	os.Exit(2)
 }