https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86331
--- Comment #13 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> --- Author: ian Date: Mon Jul 2 16:29:24 2018 New Revision: 262315 URL: https://gcc.gnu.org/viewcvs?rev=262315&root=gcc&view=rev Log: PR go/86331 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. Reviewed-on: https://go-review.googlesource.com/121595 Modified: branches/gcc-7-branch/libgo/go/os/wait_waitid.go