1// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2#define _GNU_SOURCE
3#include "../test.h"
4#include <errno.h>
5
6int var;
7
8void *Thread(void *x) {
9 barrier_wait(&barrier);
10 var = 1;
11 return 0;
12}
13
14static void check(int res) {
15 if (res != EBUSY) {
16 fprintf(stderr, "Unexpected result of pthread_tryjoin_np: %d\n", res);
17 exit(1);
18 }
19}
20
21int main() {
22 barrier_init(&barrier, 2);
23 pthread_t t;
24 pthread_create(&t, 0, Thread, 0);
25 check(pthread_tryjoin_np(t, 0));
26 barrier_wait(&barrier);
27 for (;;) {
28 int res = pthread_tryjoin_np(t, 0);
29 if (!res)
30 break;
31 check(res);
32 pthread_yield();
33 }
34 var = 2;
35 fprintf(stderr, "PASS\n");
36 return 0;
37}
38
39// CHECK-NOT: WARNING: ThreadSanitizer: data race
40// CHECK-NOT: WARNING: ThreadSanitizer: thread leak
41// CHECK: PASS
42