golang tsan12 代码
文件路径：/misc/cgo/testsanitizers/testdata/tsan12.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, 1)
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
}