tree f1eef1cc01e02750ba75a5bde754c0409d25fe45
parent 24acc66eabead631b4e856255a9ad925549cee80
author Joël Stemmer <jstemmer@google.com> 1491692130 +0100
committer Brad Fitzpatrick <bradfitz@golang.org> 1491764555 +0000

imports: wait for fastWalk workers to finish before returning

In some cases walkFn is being called after the fastWalk function has
returned. This often happens when an error was encountered early on in
scanning directories with many entries.

It is caused by fastWalk not waiting for its workers to complete their
work. A sync.WaitGroup is used to wait for all workers to finish when
the function returns.

Updates golang/go#16399

Change-Id: I695d30c18e4878b789520b9d8a650f9688d896ac
Reviewed-on: https://go-review.googlesource.com/40092
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>