1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2 #include <libkern/OSAtomic.h>
3 #include <pthread.h>
4 #include <stdio.h>
5
6 int Global;
7 OSSpinLock lock;
8
Thread(void * x)9 void *Thread(void *x) {
10 OSSpinLockLock(&lock);
11 Global++;
12 OSSpinLockUnlock(&lock);
13 return NULL;
14 }
15
main()16 int main() {
17 fprintf(stderr, "Hello world.\n");
18
19 pthread_t t[2];
20 pthread_create(&t[0], NULL, Thread, NULL);
21 pthread_create(&t[1], NULL, Thread, NULL);
22 pthread_join(t[0], NULL);
23 pthread_join(t[1], NULL);
24
25 fprintf(stderr, "Done.\n");
26 }
27
28 // CHECK: Hello world.
29 // CHECK: Done.
30 // CHECK-NOT: WARNING: ThreadSanitizer
31