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- // Copyright (C) 2015, Andrzej Krzemienski.
- //
- // Use, modification, and distribution is subject to the Boost Software
- // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- //
- // See http://www.boost.org/lib/optional for documentation.
- //
- // You are welcome to contact the author at:
- // akrzemi1@gmail.com
- #include <iostream>
- #include "boost/none.hpp"
- // but no boost/optional/optional_io.hpp
- // THIS TEST SHOULD FAIL TO COMPILE
- // Unless one includes header boost/optional/optional_io.hpp, it should not be possible
- // to stream out boost::none.
- void test_streaming_out_none()
- {
- std::cout << boost::none;
- }
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