| // { dg-do run { target c++17 } } |
| |
| // Copyright (C) 2015-2021 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/>. |
| |
| // 24.8, container access [iterator.container] |
| |
| #include <iterator> |
| #include <vector> |
| #include <testsuite_hooks.h> |
| |
| void |
| test01() |
| { |
| int i[42]; |
| VERIFY(std::data(i) == i); |
| VERIFY(std::size(i) == 42); |
| VERIFY(!std::empty(i)); |
| } |
| |
| void |
| test02() |
| { |
| static constexpr int i[42]{}; |
| constexpr auto d = std::data(i); |
| static_assert(d == i); |
| constexpr auto s = std::size(i); |
| static_assert(s == 42); |
| constexpr auto e = std::empty(i); |
| static_assert(!e); |
| } |
| |
| void |
| test03() |
| { |
| std::initializer_list<int> il{1,2,3}; |
| VERIFY(std::data(il) == il.begin()); |
| VERIFY(std::size(il) == 3); |
| VERIFY(!std::empty(il)); |
| std::initializer_list<int> il2{}; |
| VERIFY(std::size(il2) == 0); |
| VERIFY(std::empty(il2)); |
| static constexpr std::initializer_list<int> il3{1,2,3}; |
| constexpr auto d = std::data(il3); |
| static_assert(d == il3.begin()); |
| constexpr auto s = std::size(il3); |
| static_assert(s == 3); |
| constexpr auto e = std::empty(il3); |
| static_assert(!e); |
| } |
| |
| void |
| test04() |
| { |
| std::vector<int> v{1,2,3}; |
| VERIFY(std::data(v) == v.data()); |
| VERIFY(std::size(v) == v.size()); |
| VERIFY(!std::empty(v)); |
| std::vector<int> v2{}; |
| VERIFY(std::size(v2) == v2.size()); |
| VERIFY(std::empty(v2)); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| test04(); |
| } |