]> git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/std/ranges/empty_view.cc
libstdc++: Remove dg-options "-std=gnu++20" from <concepts> and <ranges> tests
[thirdparty/gcc.git] / libstdc++-v3 / testsuite / std / ranges / empty_view.cc
1 // Copyright (C) 2019-2023 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
13
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
17
18 // { dg-do compile { target c++20 } }
19
20 #include <ranges>
21
22 static_assert(std::ranges::view<std::ranges::empty_view<int>>);
23
24 std::ranges::empty_view<int> e;
25 static_assert(std::ranges::empty(e));
26 static_assert(0 == e.size());
27
28 static_assert(e.begin() == nullptr);
29 static_assert(e.end() == nullptr);
30 static_assert(e.data() == nullptr);
31 static_assert(e.empty());
32
33 static_assert(std::ranges::begin(e) == nullptr);
34 static_assert(std::ranges::end(e) == nullptr);