36 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2#include "test.h"3 4void *Thread1(void *x) {5 int *p = (int*)x;6 p[0] = 1;7 barrier_wait(&barrier);8 return NULL;9}10 11void *Thread2(void *x) {12 barrier_wait(&barrier);13 char *p = (char*)x;14 p[2] = 1;15 return NULL;16}17 18int main() {19 barrier_init(&barrier, 2);20 int *data = new int(42);21 print_address("ptr1=", 1, data);22 print_address("ptr2=", 1, (char*)data + 2);23 pthread_t t[2];24 pthread_create(&t[0], NULL, Thread1, data);25 pthread_create(&t[1], NULL, Thread2, data);26 pthread_join(t[0], NULL);27 pthread_join(t[1], NULL);28 delete data;29}30 31// CHECK: ptr1=[[PTR1:0x[0-9,a-f]+]]32// CHECK: ptr2=[[PTR2:0x[0-9,a-f]+]]33// CHECK: WARNING: ThreadSanitizer: data race34// CHECK: Write of size 1 at [[PTR2]] by thread T2:35// CHECK: Previous write of size 4 at [[PTR1]] by thread T1:36