1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
2 | #include "test.h" |
3 | #include <sys/types.h> |
4 | #include <sys/stat.h> |
5 | #include <fcntl.h> |
6 | |
7 | int fd; |
8 | char buf; |
9 | |
10 | void *Thread1(void *x) { |
11 | buf = 1; |
12 | barrier_wait(barrier: &barrier); |
13 | return NULL; |
14 | } |
15 | |
16 | void *Thread2(void *x) { |
17 | write(fd: fd, buf: &buf, n: 1); |
18 | return NULL; |
19 | } |
20 | |
21 | int main() { |
22 | barrier_init(barrier: &barrier, count: 2); |
23 | fd = open(file: "/dev/null" , O_WRONLY); |
24 | if (fd < 0) return 1; |
25 | pthread_t t[2]; |
26 | pthread_create(newthread: &t[0], NULL, start_routine: Thread1, NULL); |
27 | barrier_wait(barrier: &barrier); |
28 | pthread_create(newthread: &t[1], NULL, start_routine: Thread2, NULL); |
29 | pthread_join(th: t[0], NULL); |
30 | pthread_join(th: t[1], NULL); |
31 | close(fd: fd); |
32 | } |
33 | |
34 | // CHECK: WARNING: ThreadSanitizer: data race |
35 | // CHECK: Read of size 1 |
36 | // CHECK: #0 write |
37 | // CHECK: Previous write of size 1 |
38 | // CHECK: #0 Thread1 |
39 | |