1// RUN: %clang_tsan %s -o %t -framework Foundation 2// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s 3 4#import <Foundation/Foundation.h> 5 6long global; 7 8int 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