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cmd/go: disable ccache when setting HOME to non-existent dir

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This fixes tests on systems where ccache is the default compiler.

Also simplify a prior workaround for this fault.

Fixed #26789

Change-Id: I031ff0b65ace7fc5e284393298e004aa2ad3b6f5
Reviewed-on: https://go-review.googlesource.com/127775
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Mark Pulford 2018-08-04 00:19:21 +10:00 committed by Brad Fitzpatrick
parent 15779d58ec
commit 490035b0b9
2 changed files with 5 additions and 6 deletions
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8
src/cmd/go/go_test.go
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@ -224,13 +224,11 @@ func TestMain(m *testing.M) {
os.Unsetenv("GOBIN")
os.Unsetenv("GOPATH")
os.Unsetenv("GIT_ALLOW_PROTOCOL")
if home, ccacheDir := os.Getenv("HOME"), os.Getenv("CCACHE_DIR"); home != "" && ccacheDir == "" {
os.Setenv("HOME", "/test-go-home-does-not-exist")
// On some systems the default C compiler is ccache.
// Setting HOME to a non-existent directory will break
// those systems. Set CCACHE_DIR to cope. Issue 17668.
os.Setenv("CCACHE_DIR", filepath.Join(home, ".ccache"))
}
os.Setenv("HOME", "/test-go-home-does-not-exist")
// those systems. Disable ccache and use real compiler. Issue 17668.
os.Setenv("CCACHE_DISABLE", "1")
if os.Getenv("GOCACHE") == "" {
os.Setenv("GOCACHE", testGOCACHE) // because $HOME is gone
}

1
src/cmd/go/script_test.go
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@ -87,6 +87,7 @@ func (ts *testScript) setup() {
"WORK=" + ts.workdir, // must be first for ts.abbrev
"PATH=" + testBin + string(filepath.ListSeparator) + os.Getenv("PATH"),
homeEnvName() + "=/no-home",
"CCACHE_DISABLE=1", // ccache breaks with non-existent HOME
"GOARCH=" + runtime.GOARCH,
"GOCACHE=" + testGOCACHE,
"GOOS=" + runtime.GOOS,