24 lines
710 B
C++
24 lines
710 B
C++
// Copyright (C) 2015, Andrzej Krzemienski.
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//
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// Use, modification, and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/lib/optional for documentation.
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//
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// You are welcome to contact the author at:
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// akrzemi1@gmail.com
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#include <iostream>
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#include "boost/optional.hpp"
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// but no boost/optional/optional_io.hpp
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// THIS TEST SHOULD FAIL TO COMPILE
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// Unless one includes header boost/optional/optional_io.hpp, it should not be possible
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// to stream out an optional object.
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void test_streaming_out_optional()
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{
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boost::optional<int> opt;
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std::cout << opt;
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} |