35 lines · c
1// RUN: %clang_tsan %s -o %t2// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'3 4#include "dispatch/dispatch.h"5 6#include <stdio.h>7 8long global;9 10int main(int argc, const char *argv[]) {11 dispatch_semaphore_t done = dispatch_semaphore_create(0);12 13 dispatch_queue_t queue =14 dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);15 16 dispatch_source_t source =17 dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGHUP, 0, queue);18 19 global = 42;20 21 dispatch_source_set_registration_handler(source, ^{22 fprintf(stderr, "global = %ld\n", global);23 24 dispatch_semaphore_signal(done);25 });26 27 dispatch_resume(source);28 29 dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);30 31 return 0;32}33 34// CHECK: global = 4235