1*7c3d14c8STreehugger Robot // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2*7c3d14c8STreehugger Robot #include <libkern/OSAtomic.h>
3*7c3d14c8STreehugger Robot #include <pthread.h>
4*7c3d14c8STreehugger Robot #include <stdio.h>
5*7c3d14c8STreehugger Robot
6*7c3d14c8STreehugger Robot int Global;
7*7c3d14c8STreehugger Robot OSSpinLock lock;
8*7c3d14c8STreehugger Robot
Thread(void * x)9*7c3d14c8STreehugger Robot void *Thread(void *x) {
10*7c3d14c8STreehugger Robot OSSpinLockLock(&lock);
11*7c3d14c8STreehugger Robot Global++;
12*7c3d14c8STreehugger Robot OSSpinLockUnlock(&lock);
13*7c3d14c8STreehugger Robot return NULL;
14*7c3d14c8STreehugger Robot }
15*7c3d14c8STreehugger Robot
main()16*7c3d14c8STreehugger Robot int main() {
17*7c3d14c8STreehugger Robot fprintf(stderr, "Hello world.\n");
18*7c3d14c8STreehugger Robot
19*7c3d14c8STreehugger Robot pthread_t t[2];
20*7c3d14c8STreehugger Robot pthread_create(&t[0], NULL, Thread, NULL);
21*7c3d14c8STreehugger Robot pthread_create(&t[1], NULL, Thread, NULL);
22*7c3d14c8STreehugger Robot pthread_join(t[0], NULL);
23*7c3d14c8STreehugger Robot pthread_join(t[1], NULL);
24*7c3d14c8STreehugger Robot
25*7c3d14c8STreehugger Robot fprintf(stderr, "Done.\n");
26*7c3d14c8STreehugger Robot }
27*7c3d14c8STreehugger Robot
28*7c3d14c8STreehugger Robot // CHECK: Hello world.
29*7c3d14c8STreehugger Robot // CHECK: Done.
30*7c3d14c8STreehugger Robot // CHECK-NOT: WARNING: ThreadSanitizer
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