1 // RUN: %clang_tsan -O1 %s -o %t && %env_tsan_opts=suppressions='%s.supp' %run %t 2>&1 | FileCheck %s
2 #include <pthread.h>
3 #include <stdio.h>
4 
5 int RacyGlobal;
6 
Thread1(void * x)7 void *Thread1(void *x) {
8   RacyGlobal = 42;
9   return NULL;
10 }
11 
Thread2(void * x)12 void *Thread2(void *x) {
13   RacyGlobal = 43;
14   return NULL;
15 }
16 
main()17 int main() {
18   pthread_t t[2];
19   pthread_create(&t[0], NULL, Thread1, NULL);
20   pthread_create(&t[1], NULL, Thread2, NULL);
21   pthread_join(t[0], NULL);
22   pthread_join(t[1], NULL);
23   printf("OK\n");
24   return 0;
25 }
26 
27 // CHECK-NOT: failed to open suppressions file
28 // CHECK-NOT: WARNING: ThreadSanitizer: data race
29 
30