1// RUN: %clang_tsan %s -o %t -framework Foundation
2// RUN: %run %t 2>&1 | FileCheck %s
3
4#import <Foundation/Foundation.h>
5
6long my_global;
7long my_global2;
8
9void callback(void *context) {
10  my_global2 = 42;
11
12  dispatch_async(dispatch_get_main_queue(), ^{
13    CFRunLoopStop(CFRunLoopGetMain());
14  });
15}
16
17int main(int argc, const char *argv[]) {
18  fprintf(stderr, "start\n");
19
20  my_global = 10;
21  dispatch_queue_t q = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
22  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_MSEC)), q, ^{
23    my_global = 42;
24
25    dispatch_async(dispatch_get_main_queue(), ^{
26      CFRunLoopStop(CFRunLoopGetMain());
27    });
28  });
29  CFRunLoopRun();
30
31  my_global2 = 10;
32  dispatch_after_f(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_MSEC)), q, NULL, &callback);
33  CFRunLoopRun();
34
35  fprintf(stderr, "done\n");
36  return 0;
37}
38
39// CHECK: start
40// CHECK: done
41// CHECK-NOT: WARNING: ThreadSanitizer
42