mirror of
https://github.com/golang/go
synced 2024-11-27 05:31:31 -07:00
44 lines
735 B
Go
44 lines
735 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.
|
||
|
|
|
||
|
|
// Make sure that the line number is reported correctly
|
||
|
|
// for faulting instructions.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"runtime"
|
||
|
|
)
|
||
|
|
|
||
|
|
var x byte
|
||
|
|
var p *byte
|
||
|
|
|
||
|
|
//go:noinline
|
||
|
|
func f() {
|
||
|
|
q := p
|
||
|
|
x = 11 // line 23
|
||
|
|
*q = 12 // line 24
|
||
|
|
}
|
||
|
|
func main() {
|
||
|
|
defer func() {
|
||
|
|
recover()
|
||
|
|
var pcs [10]uintptr
|
||
|
|
n := runtime.Callers(1, pcs[:])
|
||
|
|
frames := runtime.CallersFrames(pcs[:n])
|
||
|
|
for {
|
||
|
|
f, more := frames.Next()
|
||
|
|
if f.Function == "main.f" && f.Line != 24 {
|
||
|
|
panic(fmt.Errorf("expected line 24, got line %d", f.Line))
|
||
|
|
}
|
||
|
|
if !more {
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
f()
|
||
|
|
}
|