| // 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 defers asynchronous signals until the signaled thread calls into libc. |
| // Since the Go runtime makes direct futex syscalls, Go runtime threads could |
| // run for an arbitrarily long time without triggering the libc interceptors. |
| // See https://golang.org/issue/18717. |
| |
| import ( |
| "os" |
| "os/signal" |
| "syscall" |
| ) |
| |
| /* |
| #cgo CFLAGS: -g -fsanitize=thread |
| #cgo LDFLAGS: -g -fsanitize=thread |
| */ |
| import "C" |
| |
| func main() { |
| c := make(chan os.Signal, 1) |
| signal.Notify(c, syscall.SIGUSR1) |
| defer signal.Stop(c) |
| syscall.Kill(syscall.Getpid(), syscall.SIGUSR1) |
| <-c |
| } |
