| // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
| #include <pthread.h> |
| #include <unistd.h> |
| |
| int Global; |
| |
| void *Thread1(void *x) { |
| sleep(1); |
| __atomic_fetch_add(&Global, 1, __ATOMIC_RELAXED); |
| return NULL; |
| } |
| |
| void *Thread2(void *x) { |
| Global++; |
| return NULL; |
| } |
| |
| int main() { |
| pthread_t t[2]; |
| pthread_create(&t[0], NULL, Thread1, NULL); |
| pthread_create(&t[1], NULL, Thread2, NULL); |
| pthread_join(t[0], NULL); |
| pthread_join(t[1], NULL); |
| } |
| |
| // CHECK: WARNING: ThreadSanitizer: data race |
| // CHECK: Atomic write of size 4 |
| // CHECK: #0 __tsan_atomic32_fetch_add |
| // CHECK: #1 Thread1 |
