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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/std/ranges/empty_view.cc
1 // Copyright (C) 2019-2021 Free Software Foundation, Inc.
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)
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.
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/>.
18 // { dg-options "-std=gnu++2a" }
19 // { dg-do compile { target c++2a } }
23 static_assert(std::ranges::view
<std::ranges::empty_view
<int>>);
25 std::ranges::empty_view
<int> e
;
26 static_assert(std::ranges::empty(e
));
27 static_assert(0 == e
.size());
29 static_assert(e
.begin() == nullptr);
30 static_assert(e
.end() == nullptr);
31 static_assert(e
.data() == nullptr);
32 static_assert(e
.empty());
34 static_assert(std::ranges::begin(e
) == nullptr);
35 static_assert(std::ranges::end(e
) == nullptr);