From: Dmitriy Vyukov <dvyukov@google.com>
Date: Tue, 5 Mar 2013 07:40:17 +0000 (+0200)
Subject: runtime: fix false positive deadlock when using runtime.Goexit
X-Git-Tag: go1.1rc2~687
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=2fe840f4f69bb1013ff5ae8968d8ab8257fb2d22;p=gostls13.git

runtime: fix false positive deadlock when using runtime.Goexit
Fixes #4893.
Actually it's fixed by cl/7314062 (improved scheduler),
just submitting the test.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7422054
---

diff --git a/src/pkg/runtime/crash_test.go b/src/pkg/runtime/crash_test.go
index 5f84cb5a2f..80549a5054 100644
--- a/src/pkg/runtime/crash_test.go
+++ b/src/pkg/runtime/crash_test.go
@@ -91,6 +91,14 @@ func TestLockedDeadlock2(t *testing.T) {
 	testDeadlock(t, lockedDeadlockSource2)
 }
 
+func TestGoexitDeadlock(t *testing.T) {
+	got := executeTest(t, goexitDeadlockSource, nil)
+	want := ""
+	if got != want {
+		t.Fatalf("expected %q, but got %q", want, got)
+	}
+}
+
 const crashSource = `
 package main
 
@@ -175,3 +183,21 @@ func main() {
 	select {}
 }
 `
+
+const goexitDeadlockSource = `
+package main
+import (
+      "runtime"
+)
+
+func F() {
+      for i := 0; i < 10; i++ {
+      }
+}
+
+func main() {
+      go F()
+      go F()
+      runtime.Goexit()
+}
+`