tree 99546a7b51076dc7322518730d331e3ba9b8b91e
parent e1fcce0aec27b1f50ac0e736f39f4c806c2a5baa
author Ian Lance Taylor <iant@golang.org> 1530215076 -0700
committer Ian Lance Taylor <iant@golang.org> 1530548865 +0000

os: check return value as well as error from waitid

https://gcc.gnu.org/PR86331 indicates that if a signal handler runs it
is possible for syscall.Syscall6 to return a non-zero errno value even
if no error occurs. That is a problem in general, but this fix will
let us work around the general problem for the specific case of
calling waitid.

Change-Id: I3d9db9ea16b0256eba7f88962909f287db3a7955
Reviewed-on: https://go-review.googlesource.com/121595
Reviewed-by: Than McIntosh <thanm@google.com>