44 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2#include "test.h"3#include <string.h>4 5char *data = 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 memcpy(data+5, data1, size);12 barrier_wait(&barrier);13 return NULL;14}15 16void *Thread2(void *x) {17 static volatile int size = 4;18 barrier_wait(&barrier);19 memcpy(data+3, data2, size);20 return NULL;21}22 23int main() {24 barrier_init(&barrier, 2);25 print_address("addr1=", 1, &data[3]);26 print_address("addr2=", 1, &data[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: addr1=[[ADDR1:0x[0-9,a-f]+]]36// CHECK: addr2=[[ADDR2:0x[0-9,a-f]+]]37// CHECK: WARNING: ThreadSanitizer: data race38// CHECK: Write of size 4 at [[ADDR1]] by thread T2:39// CHECK: #0 {{.*mem(cpy|move)}}40// CHECK: #{{[12]}} Thread241// CHECK: Previous write of size 1 at [[ADDR2]] by thread T1:42// CHECK: #0 {{.*mem(cpy|move)}}43// CHECK: #{{[12]}} Thread144