os: fix data race on Process.done
Fixes #3969.
R=dvyukov, r, alex.brainman, minux.ma
CC=golang-dev
https://golang.org/cl/6462081
diff --git a/src/pkg/os/exec_unix.go b/src/pkg/os/exec_unix.go
index ecfe535..fa3ba8a 100644
--- a/src/pkg/os/exec_unix.go
+++ b/src/pkg/os/exec_unix.go
@@ -24,7 +24,7 @@
return nil, NewSyscallError("wait", e)
}
if pid1 != 0 {
- p.done = true
+ p.setDone()
}
ps = &ProcessState{
pid: pid1,
@@ -35,7 +35,7 @@
}
func (p *Process) signal(sig Signal) error {
- if p.done {
+ if p.done() {
return errors.New("os: process already finished")
}
s, ok := sig.(syscall.Signal)
