1// RUN: %clang_tsan %s -o %t -framework Foundation 2// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %deflake %run %t 2>&1 | FileCheck %s 3 4#import <Foundation/Foundation.h> 5 6#import "../test.h" 7 8long global; 9 10int main() { 11 NSLog(@"Hello world."); 12 print_address("addr=", 1, &global); 13 barrier_init(&barrier, 2); 14 15 global = 42; 16 dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ 17 global = 43; 18 barrier_wait(&barrier); 19 }); 20 21 dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ 22 barrier_wait(&barrier); 23 global = 44; 24 25 dispatch_sync(dispatch_get_main_queue(), ^{ 26 CFRunLoopStop(CFRunLoopGetCurrent()); 27 }); 28 }); 29 30 CFRunLoopRun(); 31 NSLog(@"Done."); 32} 33 34// CHECK: Hello world. 35// CHECK: addr=[[ADDR:0x[0-9,a-f]+]] 36// CHECK: WARNING: ThreadSanitizer: data race 37// CHECK: Location is global 'global' {{(of size 8 )?}}at [[ADDR]] (gcd-async-race.mm.tmp+0x{{[0-9,a-f]+}}) 38// CHECK: Done. 39