| // { dg-do run { target c++14 } } |
| |
| // 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/>. |
| |
| // C++ 2014 24.7, range access [iterator.range] |
| |
| #include <iterator> |
| #include <vector> |
| #include <testsuite_hooks.h> |
| |
| void |
| test01() |
| { |
| int i[1]; |
| VERIFY(std::cbegin(i) == i); |
| VERIFY(std::cend(i) == i+1); |
| VERIFY(std::rbegin(i) == std::reverse_iterator<int*>(i+1)); |
| VERIFY(std::rend(i) == std::reverse_iterator<int*>(i)); |
| VERIFY(std::crbegin(i) == std::reverse_iterator<int*>(i+1)); |
| VERIFY(std::crend(i) == std::reverse_iterator<int*>(i)); |
| } |
| |
| void |
| test02() |
| { |
| static int i[1]; |
| // LWG 2280 |
| constexpr auto b __attribute__((unused)) = std::begin(i); |
| constexpr auto e __attribute__((unused)) = std::end(i); |
| constexpr auto cb __attribute__((unused)) = std::cbegin(i); |
| constexpr auto ce __attribute__((unused)) = std::cend(i); |
| |
| // LWG 2280 |
| static_assert( noexcept(std::begin(i)), "LWG 2280" ); |
| static_assert( noexcept(std::end(i)), "LWG 2280" ); |
| static_assert( noexcept(std::cbegin(i)), "LWG 2280" ); |
| static_assert( noexcept(std::cend(i)), "LWG 2280" ); |
| |
| // LWG 3537 |
| static_assert( noexcept(std::rbegin(i)), "LWG 3537" ); |
| static_assert( noexcept(std::rend(i)), "LWG 3537" ); |
| } |
| |
| void |
| test03() |
| { |
| std::initializer_list<int> il{1}; |
| VERIFY(std::cbegin(il) == il.begin()); |
| VERIFY(std::cend(il) == il.end()); |
| VERIFY(std::rbegin(il) == std::reverse_iterator<const int*>(il.end())); |
| VERIFY(std::rend(il) == std::reverse_iterator<const int*>(il.begin())); |
| VERIFY(std::crbegin(il) == std::reverse_iterator<const int*>(il.end())); |
| VERIFY(std::crend(il) == std::reverse_iterator<const int*>(il.begin())); |
| |
| // LWG 3537 |
| static_assert( noexcept(std::rbegin(il)), "LWG 3537" ); |
| static_assert( noexcept(std::rend(il)), "LWG 3537" ); |
| } |
| |
| void |
| test04() |
| { |
| std::vector<int> v{1}; |
| VERIFY(std::cbegin(v) == v.cbegin()); |
| VERIFY(std::cend(v) == v.cend()); |
| VERIFY(std::rbegin(v) == v.rbegin()); |
| VERIFY(std::rend(v) == v.rend()); |
| VERIFY(std::crbegin(v) == v.crbegin()); |
| VERIFY(std::crend(v) == v.crend()); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| test03(); |
| test04(); |
| } |