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https://github.com/golang/go
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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>
34 lines
686 B
Go
34 lines
686 B
Go
// run
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Make sure FuncForPC won't panic when given a pc which
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// lies between two functions.
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package main
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import (
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"runtime"
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)
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func main() {
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var stack [1]uintptr
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runtime.Callers(1, stack[:])
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f() // inlined function, to give main some inlining info
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for i := uintptr(0); true; i++ {
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f := runtime.FuncForPC(stack[0] + i)
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if f.Name() != "main.main" && f.Name() != "main.f" {
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// Reached next function successfully.
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break
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}
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}
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}
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func f() {
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sink = 0 // one instruction which can't be removed
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}
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var sink int
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