1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2 #include "test.h"
3 
4 int X = 0;
5 
Thread(void * p)6 void *Thread(void *p) {
7   X = 42;
8   barrier_wait(&barrier);
9   return 0;
10 }
11 
main()12 int main() {
13   barrier_init(&barrier, 2);
14   pthread_t t;
15   sleep(1);  // must not appear in the report
16   pthread_create(&t, 0, Thread, 0);
17   barrier_wait(&barrier);
18   X = 43;
19   pthread_join(t, 0);
20   return 0;
21 }
22 
23 // CHECK: WARNING: ThreadSanitizer: data race
24 // CHECK-NOT: As if synchronized via sleep
25