70 lines
1.1 KiB
C++
70 lines
1.1 KiB
C++
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// Copyright 2019 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0.
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//
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// 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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#if defined(_MSC_VER)
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# pragma warning( disable: 4702 ) // unreachable code
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#endif
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#include <boost/variant2/variant.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <stdexcept>
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using namespace boost::variant2;
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struct X
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{
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static int instances;
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X()
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{
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++instances;
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}
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X( X const& )
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{
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throw std::runtime_error( "X(X const&)" );
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}
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~X()
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{
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--instances;
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}
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};
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int X::instances = 0;
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void test()
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{
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X::instances = 0;
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{
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variant<X> v1;
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BOOST_TEST_EQ( X::instances, 1 );
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try
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{
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variant<X> v2( v1 );
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BOOST_TEST_EQ( X::instances, 2 );
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}
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catch( std::exception const& )
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{
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}
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BOOST_TEST_EQ( X::instances, 1 );
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}
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BOOST_TEST_EQ( X::instances, 0 );
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}
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int main()
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{
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test();
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return boost::report_errors();
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}
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