1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
| // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
| #include "test.h"
| #include <sys/types.h>
| #include <sys/stat.h>
| #include <fcntl.h>
|
| int fd;
| char buf;
|
| void *Thread1(void *x) {
| buf = 1;
| barrier_wait(&barrier);
| return NULL;
| }
|
| void *Thread2(void *x) {
| write(fd, &buf, 1);
| return NULL;
| }
|
| int main() {
| barrier_init(&barrier, 2);
| fd = open("/dev/null", O_WRONLY);
| if (fd < 0) return 1;
| pthread_t t[2];
| pthread_create(&t[0], NULL, Thread1, NULL);
| barrier_wait(&barrier);
| pthread_create(&t[1], NULL, Thread2, NULL);
| pthread_join(t[0], NULL);
| pthread_join(t[1], NULL);
| close(fd);
| }
|
| // CHECK: WARNING: ThreadSanitizer: data race
| // CHECK: Read of size 1
| // CHECK: #0 write
| // CHECK: Previous write of size 1
| // CHECK: #0 Thread1
|
|
