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 dispatch_queue_t queue = 10 dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT); 11 12 dispatch_source_t source = 13 dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue); 14 15 dispatch_source_set_timer(source, dispatch_walltime(NULL, 0), 1e9, 5); 16 17 global = 42; 18 19 dispatch_source_set_cancel_handler(source, ^{ 20 fprintf(stderr, "global = %ld\n", global); 21 22 dispatch_sync(dispatch_get_main_queue(), ^{ 23 CFRunLoopStop(CFRunLoopGetCurrent()); 24 }); 25 }); 26 27 dispatch_resume(source); 28 dispatch_cancel(source); 29 30 CFRunLoopRun(); 31 32 return 0; 33} 34 35// CHECK: global = 42 36// CHECK-NOT: WARNING: ThreadSanitizer 37