type
  File = record
    fd: Int
  end
  Socket = record
    handle: Int
  end

  List#[T] = record
    head: T
  end

  Queue#[T] = record(List#[T])
    tail: T
  end

var
  jobs: Queue#[^File]
  wrong: ^List#[^Socket]

program()
begin
  wrong := @jobs (* @Error Expected type '\^List#\[\^Socket\]', but got '\^Queue#\[\^File\]' *)
return 0u8

end.