| Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame^] | 1 | // RUN: %clangxx_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s |
| 2 | #include <pthread.h> |
| 3 | #include <unistd.h> |
| 4 | |
| 5 | int Global; |
| 6 | |
| 7 | void *Thread1(void *x) { |
| 8 | sleep(1); |
| 9 | __atomic_fetch_add(&Global, 1, __ATOMIC_RELAXED); |
| 10 | return NULL; |
| 11 | } |
| 12 | |
| 13 | void *Thread2(void *x) { |
| 14 | Global++; |
| 15 | return NULL; |
| 16 | } |
| 17 | |
| 18 | int main() { |
| 19 | pthread_t t[2]; |
| 20 | pthread_create(&t[0], NULL, Thread1, NULL); |
| 21 | pthread_create(&t[1], NULL, Thread2, NULL); |
| 22 | pthread_join(t[0], NULL); |
| 23 | pthread_join(t[1], NULL); |
| 24 | } |
| 25 | |
| 26 | // CHECK: WARNING: ThreadSanitizer: data race |
| 27 | // CHECK: Atomic write of size 4 |
| 28 | // CHECK: #0 __tsan_atomic32_fetch_add |
| 29 | // CHECK: #1 Thread1 |