mirror of
https://github.com/golang/go
synced 2024-11-18 14:54:40 -07:00
42 lines
768 B
Go
42 lines
768 B
Go
|
// 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")
|
||
|
|
}
|