1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2 #include "test.h"
3 
4 int fds[2];
5 
Thread1(void * x)6 void *Thread1(void *x) {
7   write(fds[1], "a", 1);
8   barrier_wait(&barrier);
9   return NULL;
10 }
11 
Thread2(void * x)12 void *Thread2(void *x) {
13   barrier_wait(&barrier);
14   close(fds[0]);
15   close(fds[1]);
16   return NULL;
17 }
18 
main()19 int main() {
20   barrier_init(&barrier, 2);
21   pipe(fds);
22   pthread_t t[2];
23   pthread_create(&t[0], NULL, Thread1, NULL);
24   pthread_create(&t[1], NULL, Thread2, NULL);
25   pthread_join(t[0], NULL);
26   pthread_join(t[1], NULL);
27 }
28 
29 // CHECK: WARNING: ThreadSanitizer: data race
30 // CHECK:   Location is file descriptor {{[0-9]+}} created by main thread at:
31 // CHECK:     #0 pipe
32 // CHECK:     #1 main
33 
34