You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.3 KiB
63 lines
1.3 KiB
// +build !nacl,!js
|
|
// 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.
|
|
//
|
|
// Ensure that deadlock detection can still
|
|
// run even with an import of "_ os/signal".
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"io/ioutil"
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"time"
|
|
)
|
|
|
|
const prog = `
|
|
package main
|
|
|
|
import _ "os/signal"
|
|
|
|
func main() {
|
|
c := make(chan int)
|
|
c <- 1
|
|
}
|
|
`
|
|
|
|
func main() {
|
|
dir, err := ioutil.TempDir("", "21576")
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
file := filepath.Join(dir, "main.go")
|
|
if err := ioutil.WriteFile(file, []byte(prog), 0655); err != nil {
|
|
log.Fatalf("Write error %v", err)
|
|
}
|
|
|
|
// Using a timeout of 1 minute in case other factors might slow
|
|
// down the start of "go run". See https://golang.org/issue/34836.
|
|
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
|
|
defer cancel()
|
|
|
|
cmd := exec.CommandContext(ctx, "go", "run", file)
|
|
output, err := cmd.CombinedOutput()
|
|
if err == nil {
|
|
log.Fatalf("Passed, expected an error")
|
|
}
|
|
|
|
want := []byte("fatal error: all goroutines are asleep - deadlock!")
|
|
if !bytes.Contains(output, want) {
|
|
log.Fatalf("Unmatched error message %q:\nin\n%s\nError: %v", want, output, err)
|
|
}
|
|
}
|