| // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do compile { target c++2a } } |
| |
| #include <iterator> |
| #include <compare> |
| |
| // LWG 3435. |
| // three_way_comparable_with<reverse_iterator<int*>, reverse_iterator<const int*>> |
| |
| using RI = std::reverse_iterator<int*>; |
| using CRI = std::reverse_iterator<const int*>; |
| |
| static_assert( std::three_way_comparable_with<RI, CRI> ); |
| |
| static_assert( std::is_convertible_v<const RI&, CRI> ); |
| static_assert( ! std::is_convertible_v<const CRI&, RI> ); |
| |
| static_assert( std::is_assignable_v<CRI, const RI&> ); |
| static_assert( ! std::is_assignable_v<RI, const CRI&> ); |
