1 // RUN: %clangxx_tsan %s -o %t
2 // RUN: %run %t 2>&1 | FileCheck %s
3 
4 // bench.h needs pthread barriers which are not available on OS X
5 // UNSUPPORTED: darwin
6 
7 #include "bench.h"
8 
9 int x;
10 
11 void thread(int tid) {
12   for (int i = 0; i < bench_niter; i++)
13     __atomic_fetch_add(&x, 1, __ATOMIC_ACQ_REL);
14 }
15 
16 void bench() {
17   start_thread_group(bench_nthread, thread);
18 }
19 
20 // CHECK: DONE
21 
22