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// Copyright 2017 Peter Dimov
// Copyright 2017 Vinnie Falco
// Copyright 2018 Andrzej Krzemienski
//
// Distributed under the Boost Software License, Version 1.0.
//
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/config.hpp>
#if defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
int main()
{
}
#else
#include <boost/optional.hpp>
#include <utility>
class basic_multi_buffer;
class const_buffers_type // a similar declaration in boost.beast had problem
{ // with boost opitonal
basic_multi_buffer const* b_;
friend class basic_multi_buffer;
explicit
const_buffers_type(basic_multi_buffer const& b);
public:
const_buffers_type() = delete;
const_buffers_type(const_buffers_type const&) = default;
const_buffers_type& operator=(const_buffers_type const&) = default;
};
void test_beast_example()
{
// test if it even compiles
boost::optional< std::pair<const_buffers_type, int> > opt, opt2;
opt = opt2;
(void)opt;
}
struct NotDefaultConstructible // minimal class exposing the problem
{
NotDefaultConstructible() = delete;
};
void test_assign_for_non_default_constructible()
{
// test if it even compiles
boost::optional<NotDefaultConstructible> opt, opt2;
opt = opt2;
(void)opt;
}
int main()
{
test_beast_example();
test_assign_for_non_default_constructible();
}
#endif
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