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cmd/go: fix gccSupportsNoPie for old GCC's that don't exit 0
GCC 4.8 exits 1 on an unrecognized option, but GCC 4.4 and 4.5 exit 0. I didn't check other versions, or try to figure out just when this changed. Fixes #13937. Change-Id: If193e9053fbb535999c9bde99f430f465a8c7c57 Reviewed-on: https://go-review.googlesource.com/18597 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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@ -2941,8 +2941,8 @@ func (b *builder) gccSupportsNoPie() bool {
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cmd := exec.Command(cmdArgs[0], cmdArgs[1:]...)
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cmd.Dir = b.work
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cmd.Env = envForDir(cmd.Dir, os.Environ())
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err := cmd.Run()
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return err == nil
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out, err := cmd.CombinedOutput()
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return err == nil && !bytes.Contains(out, []byte("unrecognized"))
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}
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// gccArchArgs returns arguments to pass to gcc based on the architecture.
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