| // RUN: %clang_tsan %s -o %t -framework Foundation |
| // RUN: %run %t 2>&1 | FileCheck %s |
| |
| #import <Foundation/Foundation.h> |
| |
| long global; |
| |
| int main() { |
| NSLog(@"Hello world."); |
| |
| global = 42; |
| |
| dispatch_semaphore_t sem = dispatch_semaphore_create(0); |
| dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ |
| |
| global = 43; |
| dispatch_semaphore_signal(sem); |
| }); |
| |
| dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); |
| global = 44; |
| |
| NSLog(@"Done."); |
| return 0; |
| } |
| |
| // CHECK: Hello world. |
| // CHECK: Done. |
| // CHECK-NOT: WARNING: ThreadSanitizer |
