mirror of
https://github.com/golang/go
synced 2024-11-02 13:42:29 +00:00
462e90259a
Reuse the strict mechanism from FileLine for FuncForPC, so we don't crash when asking the pcln table about bad pcs. Fixes #29735 Change-Id: Iaffb32498b8586ecf4eae03823e8aecef841aa68 Reviewed-on: https://go-review.googlesource.com/c/157799 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
33 lines
686 B
Go
33 lines
686 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 FuncForPC won't panic when given a pc which
|
|
// lies between two functions.
|
|
|
|
package main
|
|
|
|
import (
|
|
"runtime"
|
|
)
|
|
|
|
func main() {
|
|
var stack [1]uintptr
|
|
runtime.Callers(1, stack[:])
|
|
f() // inlined function, to give main some inlining info
|
|
for i := uintptr(0); true; i++ {
|
|
f := runtime.FuncForPC(stack[0] + i)
|
|
if f.Name() != "main.main" && f.Name() != "main.f" {
|
|
// Reached next function successfully.
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
func f() {
|
|
sink = 0 // one instruction which can't be removed
|
|
}
|
|
|
|
var sink int
|