mirror of
https://github.com/golang/go
synced 2024-11-12 12:50:28 -07:00
36 lines
926 B
Go
36 lines
926 B
Go
|
// Copyright 2017 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.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
// This program hung when run under the C/C++ ThreadSanitizer. TSAN installs a
|
||
|
|
// libc interceptor that writes signal handlers to a global variable within the
|
||
|
|
// TSAN runtime instead of making a sigaction system call. A bug in
|
||
|
|
// syscall.runtime_AfterForkInChild corrupted TSAN's signal forwarding table
|
||
|
|
// during calls to (*os/exec.Cmd).Run, causing the parent process to fail to
|
||
|
|
// invoke signal handlers.
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"os/exec"
|
||
|
|
"os/signal"
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
import "C"
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
ch := make(chan os.Signal)
|
||
|
|
signal.Notify(ch, syscall.SIGUSR1)
|
||
|
|
|
||
|
|
if err := exec.Command("true").Run(); err != nil {
|
||
|
|
fmt.Fprintf(os.Stderr, "Unexpected error from `true`: %v", err)
|
||
|
|
os.Exit(1)
|
||
|
|
}
|
||
|
|
|
||
|
|
syscall.Kill(syscall.Getpid(), syscall.SIGUSR1)
|
||
|
|
<-ch
|
||
|
|
}
|