1 // RUN: %clangxx_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
2 #include "test.h"
3 
4 const int kThreads = 16;
5 const int kIters = 1000;
6 
7 volatile int X = 0;
8 
thr(void * arg)9 void *thr(void *arg) {
10   for (int i = 0; i < kIters; i++)
11     X++;
12   return 0;
13 }
14 
main()15 int main() {
16   pthread_t th[kThreads];
17   for (int i = 0; i < kThreads; i++)
18     pthread_create(&th[i], 0, thr, 0);
19   for (int i = 0; i < kThreads; i++)
20     pthread_join(th[i], 0);
21   fprintf(stderr, "DONE\n");
22 }
23 
24 // CHECK: ThreadSanitizer: data race
25 // CHECK: DONE
26