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testing: fix racey access to t.failed

We need to grab the mutex before we can access it.

Fixes #24438

Change-Id: Idd6130036691acec5bc5f8b40d6884f8db1d9d3c
Reviewed-on: https://go-review.googlesource.com/101283
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Anmol Sethi 2018-03-18 02:36:40 -04:00 committed by Ian Lance Taylor
parent 0dcdbc772e
commit eff1e68528

View File

@ -731,7 +731,7 @@ func tRunner(t *T, fn func(t *T)) {
// a call to runtime.Goexit, record the duration and send
// a signal saying that the test is done.
defer func() {
if t.failed {
if t.Failed() {
atomic.AddUint32(&numFailed, 1)
}