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- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #include <boost/hana/type.hpp>
- namespace hana = boost::hana;
- template <bool b = false>
- struct invalid { static_assert(b, "invalid must not be instantiated"); };
- template <typename T> void adl(T) { }
- template <typename T> void adl_pattern(hana::basic_type<T>) { }
- int main() {
- // ADL kicks in but `invalid<>` must not instantiated
- adl(hana::type_c<invalid<>>);
- adl_pattern(hana::type_c<invalid<>>);
- // ADL instantiates the types recursively, make sure that works too
- adl(hana::typeid_(hana::type_c<invalid<>>));
- adl_pattern(hana::typeid_(hana::type_c<invalid<>>));
- }
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