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1// RUN: %clang_tsan %s -o %t -framework Foundation2// RUN: %deflake %run %t 2>&1 | FileCheck %s3 4#import <Foundation/Foundation.h>5 6#import "../test.h"7 8long global;9 10int main() {11 fprintf(stderr, "Hello world.\n");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 fprintf(stderr, "Done.\n");32}33 34// CHECK: Hello world.35// CHECK: WARNING: ThreadSanitizer: data race36// CHECK: Write of size 837// CHECK: Previous write of size 838// CHECK: Location is global39// CHECK: Thread {{.*}} is a GCD worker thread40// CHECK-NOT: failed to restore the stack41// CHECK: Thread {{.*}} is a GCD worker thread42// CHECK-NOT: failed to restore the stack43// CHECK: Done.44