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); 8 __atomic_fetch_add(&Global, 1, __ATOMIC_RELAXED); 9 return NULL; 10 } 11 12 void *Thread2(void *x) { 13 Global++; 14 barrier_wait(&barrier); 15 return NULL; 16 } 17 18 int 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 race 28 // CHECK: Atomic write of size 4 29 // CHECK: #0 __tsan_atomic32_fetch_add 30 // CHECK: #1 Thread1 31
