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63f1bc5992
Print the bytes of the instruction that generated a SIGILL. This should help us respond to bug reports without having to go back-and-forth with the reporter to get the instruction involved. Might also help with SIGILL problems that are difficult to reproduce. Update #37513 Change-Id: I33059b1dbfc97bce16142a843f32a88a6547e280 Reviewed-on: https://go-review.googlesource.com/c/go/+/221431 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
28 lines
593 B
Go
28 lines
593 B
Go
// Copyright 2020 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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package main
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import (
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"bytes"
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"fmt"
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"os"
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"os/exec"
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)
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func main() {
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if len(os.Args) > 1 {
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// Generate a SIGILL.
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sigill()
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return
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}
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// Run ourselves with an extra argument. That process should SIGILL.
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out, _ := exec.Command(os.Args[0], "foo").CombinedOutput()
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want := "instruction bytes: 0xf 0xb 0xc3"
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if !bytes.Contains(out, []byte(want)) {
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fmt.Printf("got:\n%s\nwant:\n%s\n", string(out), want)
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}
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}
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func sigill()
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