main :: () -> void {
  print_u64 a;
};

a :: f();

f :: ()->u64{
  b :u64= 2;
  r := 2;
  if r % 2 == 0
    return b;
  else
    return d();
};

d :: ()->u64{
  return c();
};

c :: ()->u64{
  return d();
};