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 fprintf(stderr, "OK\n");
29}
30
31// CHECK-NOT: WARNING: ThreadSanitizer: data race
32
33
34