29   pthread_t thread[5];  in main()  local
30   assert(!pthread_create(&thread[0], nullptr, fn, (void *)1000));  in main()
31   assert(!pthread_create(&thread[1], nullptr, fn, (void *)1001));  in main()
32   assert(!pthread_create(&thread[2], nullptr, fn, (void *)1002));  in main()
33   assert(!pthread_create(&thread[3], nullptr, fn, (void *)1003));  in main()
37   assert(!pthread_create(&thread[4], &attr, fn, (void *)1004));  in main()
40   assert(!pthread_detach(thread[0]));  in main()
44     while (pthread_tryjoin_np(thread[1], &res))  in main()
48            (pthread_tryjoin_np(thread[1], &res) == EBUSY));  in main()
54     while (pthread_timedjoin_np(thread[2], &res, &tm))  in main()
58            (pthread_timedjoin_np(thread[2], &res, &tm) == ESRCH));  in main()
63     assert(!pthread_join(thread[3], &res));  in main()
65     assert(check_invalid_join || (pthread_join(thread[3], &res) == ESRCH));  in main()