1 // RUN: %clang_tsan %s -o %t -framework Foundation 2 // RUN: %deflake %run %t 2>&1 3 4 #import <Foundation/Foundation.h> 5 6 #import "../test.h" 7 8 long global; 9 10 int main() { 11 NSLog(@"Hello world."); 12 NSLog(@"addr=%p\n", &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' at [[ADDR]] (global_race.cc.exe+0x{{[0-9,a-f]+}}) 38 // CHECK: Done. 39
