ceph/src/boost/libs/asio/test/properties/cpp14/can_prefer_not_applicable_unsupported.cpp

   1 //
   2 // cpp14/can_prefer_not_applicable_unsupported.cpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #include <boost/asio/prefer.hpp>
  12 #include <cassert>
  13
  14 template <int>
  15 struct prop
  16 {
  17 };
  18
  19 template <int>
  20 struct object
  21 {
  22 };
  23
  24 int main()
  25 {
  26   static_assert(!boost::asio::can_prefer_v<object<1>, prop<2>>, "");
  27   static_assert(!boost::asio::can_prefer_v<object<1>, prop<2>, prop<3>>, "");
  28   static_assert(!boost::asio::can_prefer_v<object<1>, prop<2>, prop<3>, prop<4>>, "");
  29   static_assert(!boost::asio::can_prefer_v<const object<1>, prop<2>>, "");
  30   static_assert(!boost::asio::can_prefer_v<const object<1>, prop<2>, prop<3>>, "");
  31   static_assert(!boost::asio::can_prefer_v<const object<1>, prop<2>, prop<3>, prop<4>>, "");
  32 }