From: Ian Lance Taylor <iant@golang.org>
Date: Mon, 9 Oct 2017 05:00:34 +0000 (-0700)
Subject: misc/cgo/testcshared: don't overwrite cc in parallel runs
X-Git-Tag: go1.10beta1~824
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=24f9db7c20ea874c14b04f4183a5632a15ff4c29;p=gostls13.git

misc/cgo/testcshared: don't overwrite cc in parallel runs

Fixes #22176

Change-Id: If47ec9a25da6b480868d8eeccc518dc97d48bda7
Reviewed-on: https://go-review.googlesource.com/69230
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
---

diff --git a/misc/cgo/testcshared/cshared_test.go b/misc/cgo/testcshared/cshared_test.go
index b81ec3b4c1..3c87850b39 100644
--- a/misc/cgo/testcshared/cshared_test.go
+++ b/misc/cgo/testcshared/cshared_test.go
@@ -210,7 +210,9 @@ func runExe(t *testing.T, env []string, args ...string) string {
 
 func runCC(t *testing.T, args ...string) string {
 	t.Helper()
-	return run(t, nil, append(cc, args...)...)
+	// This function is run in parallel, so append to a copy of cc
+	// rather than cc itself.
+	return run(t, nil, append(append([]string(nil), cc...), args...)...)
 }
 
 func createHeaders() error {