go issue34123 源码
golang issue34123 代码
文件路径：/test/fixedbugs/issue34123.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()
}
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