mirror of
https://github.com/golang/go
synced 2024-11-24 12:50:11 -07:00
68117a91ae
Russ Cox fixed this issue for other systems in CL 12026, but the Plan 9 part was forgotten. Fixes #11656. Change-Id: I91c033687987ba43d13ad8f42e3fe4c7a78e6075 Reviewed-on: https://go-review.googlesource.com/12762 Reviewed-by: Russ Cox <rsc@golang.org>
63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
// run
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// Copyright 2015 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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// darwin/386 seems to mangle the PC and SP before
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// it manages to invoke the signal handler, so this test fails there.
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// +build !darwin !386
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//
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// openbsd/386 and netbsd/386 don't work, not sure why.
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// +build !openbsd !386
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// +build !netbsd !386
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//
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// windows doesn't work, because Windows exception handling
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// delivers signals based on the current PC, and that current PC
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// doesn't go into the Go runtime.
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// +build !windows
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//
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// arm64 gets "illegal instruction" (why is the data executable?)
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// and is unable to do the traceback correctly (why?).
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// +build !arm64
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package main
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import (
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"runtime"
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"runtime/debug"
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"unsafe"
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)
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func main() {
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debug.SetPanicOnFault(true)
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defer func() {
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if err := recover(); err == nil {
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panic("not panicking")
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}
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pc, _, _, _ := runtime.Caller(10)
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f := runtime.FuncForPC(pc)
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if f == nil || f.Name() != "main.f" {
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if f == nil {
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println("no func for ", unsafe.Pointer(pc))
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} else {
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println("found func:", f.Name())
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}
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panic("cannot find main.f on stack")
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}
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}()
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f(20)
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}
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func f(n int) {
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if n > 0 {
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f(n - 1)
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}
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var f struct {
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x uintptr
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}
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f.x = uintptr(unsafe.Pointer(&f))
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fn := *(*func())(unsafe.Pointer(&f))
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fn()
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}
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