atomic_fetch_add_explicit(&x, 1, memory_order_relaxed);
}
-void user_main()
+int user_main(int argc, char **argv)
{
thrd_t t1, t2;
atomic_init(&x, 0);
-
thrd_create(&t1, (thrd_start_t)&a, NULL);
thrd_create(&t2, (thrd_start_t)&a, NULL);
thrd_join(t1);
thrd_join(t2);
+
+ return 0;
}