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b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
7c673cae FG |
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/type.hpp> | |
8 | namespace hana = boost::hana; | |
9 | ||
10 | ||
11 | struct T { }; | |
12 | ||
13 | int main() { | |
14 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
15 | hana::make<hana::type_tag>(T{}), | |
16 | hana::decltype_(T{}) | |
17 | )); | |
18 | ||
19 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
20 | hana::make<hana::type_tag>(hana::type_c<T>), | |
21 | hana::decltype_(hana::type_c<T>) | |
22 | )); | |
23 | ||
24 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
25 | hana::make_type(T{}), | |
26 | hana::make<hana::type_tag>(T{}) | |
27 | )); | |
28 | ||
29 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
30 | hana::make_type(hana::type_c<T>), | |
31 | hana::make<hana::type_tag>(hana::type_c<T>) | |
32 | )); | |
33 | ||
34 | // make sure we don't read from non-constexpr variables | |
35 | { | |
36 | auto t = hana::type_c<T>; | |
37 | auto x = 1; | |
38 | constexpr auto r1 = hana::make<hana::type_tag>(t); (void)r1; | |
39 | constexpr auto r2 = hana::make<hana::type_tag>(x); (void)r2; | |
40 | } | |
41 | } |