43 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2#include "test.h"3#include <string.h>4 5char *data0 = new char[10];6char *data1 = new char[10];7char *data2 = new char[10];8 9void *Thread1(void *x) {10 static volatile int size = 1;11 static volatile int sink;12 sink = memcmp(data0+5, data1, size);13 barrier_wait(&barrier);14 return NULL;15}16 17void *Thread2(void *x) {18 static volatile int size = 4;19 barrier_wait(&barrier);20 memcpy(data0+5, data2, size);21 return NULL;22}23 24int main() {25 barrier_init(&barrier, 2);26 print_address("addr=", 1, &data0[5]);27 pthread_t t[2];28 pthread_create(&t[0], NULL, Thread1, NULL);29 pthread_create(&t[1], NULL, Thread2, NULL);30 pthread_join(t[0], NULL);31 pthread_join(t[1], NULL);32 return 0;33}34 35// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]36// CHECK: WARNING: ThreadSanitizer: data race37// CHECK: Write of size 3 at [[ADDR]] by thread T2:38// CHECK: #0 {{.*mem(cpy|move)}}39// CHECK: #{{[12]}} Thread240// CHECK: Previous read of size 1 at [[ADDR]] by thread T1:41// CHECK: #0 {{.*}}memcmp42// CHECK: #{{[12]}} Thread143