tree 6644373ae4379f9942d2d2fa35546eaf0e7fb90f
parent 6e8e738ad208923de99951fe0b48239bfd864f28
author hanliang.kirk <kirk91.han@gmail.com> 1598760064 +0800
committer Bryan C. Mills <bcmills@google.com> 1601472431 +0000

singleflight: fix hangs after first Do panic

When first Do panic, the related wait group will never be done,
and all the subsequent calls would block on the same wait group forever.

Fixes golang/go#41133

Change-Id: I0ad9bfb387b6133b10766a34fc0040f200eae27e
Reviewed-on: https://go-review.googlesource.com/c/sync/+/251677
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: Ian Lance Taylor <iant@golang.org>
Trust: Bryan C. Mills <bcmills@google.com>