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https://github.com/golang/go
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319b75ed33
Fixes #58141 Co-authored-by: Richard Musiol <neelance@gmail.com> Co-authored-by: Achille Roussel <achille.roussel@gmail.com> Co-authored-by: Julien Fabre <ju.pryz@gmail.com> Co-authored-by: Evan Phoenix <evan@phx.io> Change-Id: I49b66946acc90fdf09ed9223096bfec9a1e5b923 Reviewed-on: https://go-review.googlesource.com/c/go/+/479627 Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com> Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Bypass: Ian Lance Taylor <iant@golang.org>
64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
// run
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// +build !nacl,!js,!wasip1,!gccgo
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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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//
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// Ensure that deadlock detection can still
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// run even with an import of "_ os/signal".
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package main
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import (
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"bytes"
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"context"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"time"
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)
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const prog = `
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package main
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import _ "os/signal"
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func main() {
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c := make(chan int)
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c <- 1
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}
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`
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func main() {
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dir, err := ioutil.TempDir("", "21576")
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if err != nil {
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log.Fatal(err)
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}
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defer os.RemoveAll(dir)
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file := filepath.Join(dir, "main.go")
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if err := ioutil.WriteFile(file, []byte(prog), 0655); err != nil {
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log.Fatalf("Write error %v", err)
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}
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// Using a timeout of 1 minute in case other factors might slow
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// down the start of "go run". See https://golang.org/issue/34836.
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ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
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defer cancel()
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cmd := exec.CommandContext(ctx, "go", "run", file)
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output, err := cmd.CombinedOutput()
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if err == nil {
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log.Fatalf("Passed, expected an error")
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}
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want := []byte("fatal error: all goroutines are asleep - deadlock!")
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if !bytes.Contains(output, want) {
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log.Fatalf("Unmatched error message %q:\nin\n%s\nError: %v", want, output, err)
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}
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}
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