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[dev.regabi] cmd/go: workaround -race issue on ppc64le

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The race detector on ppc64le corrupts command-line arguments lists if
they contain an empty string, and cmd/go often generates compiler
argument lists containing `-D ""`. Since this is equivalent to not
specifying the `-D` flag at all, just do that. This allows using a
race-detector-enabled cmd/compile on ppc64le.

Updates #43883.

Change-Id: Ifac5cd9a44932129438b9b0b3ecc6101ad3716b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/286173
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Matthew Dempsky 2021-01-24 12:26:47 -08:00
parent 5a76c3d548
commit 8ee3d39838
1 changed files with 5 additions and 1 deletions
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6
src/cmd/go/internal/work/gc.go
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@ -129,7 +129,11 @@ func (gcToolchain) gc(b *Builder, a *Action, archive string, importcfg, embedcfg
}
}
args := []interface{}{cfg.BuildToolexec, base.Tool("compile"), "-o", ofile, "-trimpath", a.trimpath(), gcflags, gcargs, "-D", p.Internal.LocalPrefix}
args := []interface{}{cfg.BuildToolexec, base.Tool("compile"), "-o", ofile, "-trimpath", a.trimpath(), gcflags, gcargs}
if p.Internal.LocalPrefix != "" {
// Workaround #43883.
args = append(args, "-D", p.Internal.LocalPrefix)
}
if importcfg != nil {
if err := b.writeFile(objdir+"importcfg", importcfg); err != nil {
return "", nil, err