1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
2 | #include "test.h" |
3 | |
4 | int Global; |
5 | |
6 | void *Thread1(void *x) { |
7 | barrier_wait(barrier: &barrier); |
8 | __atomic_fetch_add(&Global, 1, __ATOMIC_RELAXED); |
9 | return NULL; |
10 | } |
11 | |
12 | void *Thread2(void *x) { |
13 | Global++; |
14 | barrier_wait(barrier: &barrier); |
15 | return NULL; |
16 | } |
17 | |
18 | int main() { |
19 | barrier_init(barrier: &barrier, count: 2); |
20 | pthread_t t[2]; |
21 | pthread_create(newthread: &t[0], NULL, start_routine: Thread1, NULL); |
22 | pthread_create(newthread: &t[1], NULL, start_routine: Thread2, NULL); |
23 | pthread_join(th: t[0], NULL); |
24 | pthread_join(th: t[1], NULL); |
25 | } |
26 | |
27 | // CHECK: WARNING: ThreadSanitizer: data race |
28 | // CHECK: Atomic write of size 4 |
29 | // CHECK: #0 Thread1 |
30 | |