1 // RUN: %clang_tsan %s -o %t -framework Foundation 2 // RUN: %run %t 2>&1 3 4 #import <Foundation/Foundation.h> 5 6 long global; 7 8 int main() { 9 NSLog(@"Hello world."); 10 11 global = 42; 12 13 dispatch_semaphore_t sem = dispatch_semaphore_create(0); 14 dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ 15 16 global = 43; 17 dispatch_semaphore_signal(sem); 18 }); 19 20 dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 21 global = 44; 22 23 NSLog(@"Done."); 24 return 0; 25 } 26 27 // CHECK: Hello world. 28 // CHECK: Done. 29 // CHECK-NOT: WARNING: ThreadSanitizer 30
