go bug348 源码
golang bug348 代码
文件路径：/test/fixedbugs/bug348.go
// run
// Copyright 2011 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 f() {
var x *string
for _, i := range *x { // THIS IS LINE 17
println(i)
}
}
func g() {
}
func main() {
defer func() {
for i := 0;; i++ {
pc, file, line, ok := runtime.Caller(i)
if !ok {
print("BUG: bug348: cannot find caller\n")
return
}
if !strings.Contains(file, "bug348.go") || runtime.FuncForPC(pc).Name() != "main.f" {
// walk past runtime frames
continue
}
if line != 17 {
print("BUG: bug348: panic at ", file, ":", line, " in ", runtime.FuncForPC(pc).Name(), "\n")
return
}
recover()
return
}
}()
f()
}
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