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- // Copyright (C) 2019-2022 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 <ranges>
- static_assert(std::ranges::view<std::ranges::empty_view<int>>);
- std::ranges::empty_view<int> e;
- static_assert(std::ranges::empty(e));
- static_assert(0 == e.size());
- static_assert(e.begin() == nullptr);
- static_assert(e.end() == nullptr);
- static_assert(e.data() == nullptr);
- static_assert(e.empty());
- static_assert(std::ranges::begin(e) == nullptr);
- static_assert(std::ranges::end(e) == nullptr);
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