| // RUN: %clang_tsan %s -o %t |
| // RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer' |
| |
| #include "dispatch/dispatch.h" |
| |
| #include <stdio.h> |
| |
| long global; |
| |
| int main() { |
| fprintf(stderr, "Hello world.\n"); |
| dispatch_semaphore_t done = dispatch_semaphore_create(0); |
| |
| global = 42; |
| dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ |
| global = 43; |
| |
| dispatch_semaphore_signal(done); |
| }); |
| |
| dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER); |
| fprintf(stderr, "Done.\n"); |
| } |
| |
| // CHECK: Hello world. |
| // CHECK: Done. |