program()
type
  File = record
    fd: Int
  end

  Stack#[T] = record
    items: T;
    top: Word
  end

var
  s: Stack#[^File]
  f: File

begin
  s := Stack#[^File]{ top: 1u, items: @f };
  assert(s.top = 1u);
  assert(s.items = @f)
end.