30 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2#include "test.h"3 4int Global;5 6void *Thread1(void *x) {7 barrier_wait(&barrier);8 __atomic_fetch_add(&Global, 1, __ATOMIC_RELAXED);9 return NULL;10}11 12void *Thread2(void *x) {13 Global++;14 barrier_wait(&barrier);15 return NULL;16}17 18int main() {19 barrier_init(&barrier, 2);20 pthread_t t[2];21 pthread_create(&t[0], NULL, Thread1, NULL);22 pthread_create(&t[1], NULL, Thread2, NULL);23 pthread_join(t[0], NULL);24 pthread_join(t[1], NULL);25}26 27// CHECK: WARNING: ThreadSanitizer: data race28// CHECK: Atomic write of size 429// CHECK: #0 Thread130