mirror of
https://github.com/golang/go
synced 2024-11-24 09:00:13 -07:00
38 lines
681 B
Go
38 lines
681 B
Go
|
// run
|
||
|
|
|
||
|
|
// Copyright 2019 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"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
f(nil)
|
||
|
|
}
|
||
|
|
|
||
|
|
func f(p *int32) {
|
||
|
|
defer checkstack()
|
||
|
|
v := *p // panic should happen here, line 20
|
||
|
|
sink = int64(v) // not here, line 21
|
||
|
|
}
|
||
|
|
|
||
|
|
var sink int64
|
||
|
|
|
||
|
|
func checkstack() {
|
||
|
|
_ = recover()
|
||
|
|
var buf [1024]byte
|
||
|
|
n := runtime.Stack(buf[:], false)
|
||
|
|
s := string(buf[:n])
|
||
|
|
if strings.Contains(s, "issue27201.go:21 ") {
|
||
|
|
panic("panic at wrong location")
|
||
|
|
}
|
||
|
|
if !strings.Contains(s, "issue27201.go:20 ") {
|
||
|
|
panic("no panic at correct location")
|
||
|
|
}
|
||
|
|
}
|