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| // 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: #1 MemSetThread
| // CHECK: Previous write
| // CHECK: #0 {{(memcpy|memmove)}}
| // CHECK: #1 MemCpyThread
|
|
