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(int argc, const char *argv[]) { 9 fprintf(stderr, "Hello world.\n"); 10 11 dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL); 12 dispatch_semaphore_t sem = dispatch_semaphore_create(0); 13 14 global = 44; 15 dispatch_data_t data = dispatch_data_create("buffer", 6, q, ^{ 16 fprintf(stderr, "Data destructor.\n"); 17 global++; 18 19 dispatch_semaphore_signal(sem); 20 }); 21 dispatch_release(data); 22 data = nil; 23 24 dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 25 26 data = dispatch_data_create("buffer", 6, q, DISPATCH_DATA_DESTRUCTOR_DEFAULT); 27 dispatch_release(data); 28 data = nil; 29 30 fprintf(stderr, "Done.\n"); 31} 32 33// CHECK: Hello world. 34// CHECK: Data destructor. 35// CHECK-NOT: WARNING: ThreadSanitizer 36// CHECK: Done. 37