1// RUN: %clangxx_tsan %s -o %t -framework Foundation -std=c++11
2// RUN: %run %t 2>&1 | FileCheck %s
3
4#import <Foundation/Foundation.h>
5#import <libkern/OSAtomic.h>
6
7#include <thread>
8
9#include "../test.h"
10
11typedef struct {
12  void *next;
13  long data;
14} ListItem;
15
16OSQueueHead q;
17
18int main(int argc, const char *argv[]) {
19  barrier_init(&barrier, 2);
20
21  std::thread t1([] {
22    ListItem *li = new ListItem{nullptr, 42};
23    OSAtomicEnqueue(&q, li, 0);
24    barrier_wait(&barrier);
25  });
26
27  std::thread t2([] {
28    barrier_wait(&barrier);
29    ListItem *li = (ListItem *)OSAtomicDequeue(&q, 0);
30    fprintf(stderr, "data = %ld\n", li->data);
31  });
32
33  t1.join();
34  t2.join();
35
36  fprintf(stderr, "done\n");
37
38  return 0;
39}
40
41// CHECK: data = 42
42// CHECK: done
43// CHECK-NOT: WARNING: ThreadSanitizer
44