summaryrefslogtreecommitdiffstats
path: root/test/fixedbugs/issue8158.go
blob: 150b338bbe74d7e0bb77e0200fb9a82f55ceacd0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
// run

// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"runtime"
	"time"
)

func main() {
	c := make(chan bool, 1)
	go f1(c)
	<-c
	time.Sleep(10 * time.Millisecond)
	go f2(c)
	<-c
}

func f1(done chan bool) {
	defer func() {
		recover()
		done <- true
		runtime.Goexit() // left stack-allocated Panic struct on gp->panic stack
	}()
	panic("p")
}

func f2(done chan bool) {
	defer func() {
		recover()
		done <- true
		runtime.Goexit()
	}()
	time.Sleep(10 * time.Millisecond) // overwrote Panic struct with Timer struct
	runtime.GC()                      // walked gp->panic list, found mangled Panic struct, crashed
	panic("p")
}