| // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
| #include "test.h" |
| #include <string.h> |
| |
| char *data = new char[10]; |
| char *data1 = new char[10]; |
| char *data2 = new char[10]; |
| |
| void *Thread1(void *x) { |
| static volatile int size = 1; |
| memcpy(data+5, data1, size); |
| barrier_wait(&barrier); |
| return NULL; |
| } |
| |
| void *Thread2(void *x) { |
| static volatile int size = 4; |
| barrier_wait(&barrier); |
| memcpy(data+3, data2, size); |
| return NULL; |
| } |
| |
| int main() { |
| barrier_init(&barrier, 2); |
| print_address("addr1=", 1, &data[3]); |
| print_address("addr2=", 1, &data[5]); |
| pthread_t t[2]; |
| pthread_create(&t[0], NULL, Thread1, NULL); |
| pthread_create(&t[1], NULL, Thread2, NULL); |
| pthread_join(t[0], NULL); |
| pthread_join(t[1], NULL); |
| return 0; |
| } |
| |
| // CHECK: addr1=[[ADDR1:0x[0-9,a-f]+]] |
| // CHECK: addr2=[[ADDR2:0x[0-9,a-f]+]] |
| // CHECK: WARNING: ThreadSanitizer: data race |
| // CHECK: Write of size 4 at [[ADDR1]] by thread T2: |
| // CHECK: #0 {{(memcpy|memmove)}} |
| // CHECK: #{{[12]}} Thread2 |
| // CHECK: Previous write of size 1 at [[ADDR2]] by thread T1: |
| // CHECK: #0 {{(memcpy|memmove)}} |
| // CHECK: #{{[12]}} Thread1 |