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// Copyright (C) 2018 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 "boost/core/lightweight_test.hpp"

#include "boost/optional/optional.hpp"

void test_assignment_to_empty()

{

// this test used to fail on GCC 8.1.0/8.2.0/9.0.0 with -std=c++98

boost::optional<int> oa, ob(1);

BOOST_TEST(!oa);

BOOST_TEST(ob);

oa = ob;

BOOST_TEST(oa);

}

int main()

{

test_assignment_to_empty();

return boost::report_errors();

}