1 // Copyright Louis Dionne 2013-2017 2 // Distributed under the Boost Software License, Version 1.0. 3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) 4 5 #include <boost/hana/assert.hpp> 6 #include <boost/hana/equal.hpp> 7 #include <boost/hana/optional.hpp> 8 9 #include <laws/base.hpp> 10 namespace hana = boost::hana; 11 using hana::test::ct_eq; 12 13 14 struct object { 15 ct_eq<3> member; 16 }; 17 main()18int main() { 19 auto lvalue = hana::just(object{}); 20 ct_eq<3>& ref = lvalue->member; 21 BOOST_HANA_CONSTANT_CHECK(hana::equal( 22 ref, 23 ct_eq<3>{} 24 )); 25 26 auto const const_lvalue = hana::just(object{}); 27 ct_eq<3> const& const_ref = const_lvalue->member; 28 BOOST_HANA_CONSTANT_CHECK(hana::equal( 29 const_ref, 30 ct_eq<3>{} 31 )); 32 33 BOOST_HANA_CONSTANT_CHECK(hana::equal( 34 hana::just(object{})->member, 35 ct_eq<3>{} 36 )); 37 } 38