| // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s |
| #include "test.h" |
| #include <string.h> |
| |
| int x[4], z[4]; |
| |
| void *MemCpyThread(void *a) { |
| memcpy((int*)a, z, 16); |
| barrier_wait(&barrier); |
| return NULL; |
| } |
| |
| void *MemSetThread(void *a) { |
| barrier_wait(&barrier); |
| memset((int*)a, 0, 16); |
| return NULL; |
| } |
| |
| int main() { |
| barrier_init(&barrier, 2); |
| pthread_t t[2]; |
| // Race on x between memcpy and memset |
| pthread_create(&t[0], NULL, MemCpyThread, x); |
| pthread_create(&t[1], NULL, MemSetThread, x); |
| pthread_join(t[0], NULL); |
| pthread_join(t[1], NULL); |
| fprintf(stderr, "PASS\n"); |
| return 0; |
| } |
| |
| // CHECK: WARNING: ThreadSanitizer: data race |
| // CHECK: #0 {{.*}}memset |
| // CHECK: #{{[12]}} MemSetThread |
| // CHECK: Previous write |
| // CHECK: #0 {{.*mem(cpy|move)}} |
| // CHECK: #{{[12]}} MemCpyThread |