1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2#include "test.h"
3#include <sys/types.h>
4#include <sys/stat.h>
5#include <fcntl.h>
6
7void *Thread1(void *x) {
8  int f = open("/dev/random", O_RDONLY);
9  close(f);
10  barrier_wait(&barrier);
11  return NULL;
12}
13
14void *Thread2(void *x) {
15  barrier_wait(&barrier);
16  int f = open("/dev/random", O_RDONLY);
17  close(f);
18  return NULL;
19}
20
21int main() {
22  barrier_init(&barrier, 2);
23  pthread_t t[2];
24  pthread_create(&t[0], NULL, Thread1, NULL);
25  pthread_create(&t[1], NULL, Thread2, NULL);
26  pthread_join(t[0], NULL);
27  pthread_join(t[1], NULL);
28  printf("OK\n");
29}
30
31// CHECK-NOT: WARNING: ThreadSanitizer: data race
32
33
34