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/optional.hpp>
6 
7 #include <laws/base.hpp>
8 namespace hana = boost::hana;
9 
10 
11 // This test makes sure that we do not instantiate rogue contructors when
12 // trying to copy a hana::just.
13 
main()14 int main() {
15     auto just = hana::just(hana::test::trap_construct{});
16     auto implicit_copy = just;
17     decltype(just) explicit_copy(just);
18 
19     (void)implicit_copy;
20     (void)explicit_copy;
21 }
22