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- /*=============================================================================
- Copyright (c) 2017 Paul Fultz II
- implicit.cpp
- Distributed under 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)
- ==============================================================================*/
- #include <boost/hof/implicit.hpp>
- template<class T>
- struct auto_caster
- {
- template<class U>
- T operator()(U x)
- {
- return T(x);
- }
- };
- int main()
- {
- boost::hof::implicit<auto_caster> auto_cast = {};
- auto x = auto_cast(1.5);
- (void)x;
- // This is not possible in c++17 due to guaranteed copy elison
- #if BOOST_HOF_HAS_STD_17 || (defined(__GNUC__) && !defined (__clang__) && __GNUC__ == 4 && __GNUC_MINOR__ < 7)
- static_assert(false, "Always fail");
- #endif
- }
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