| // { dg-do compile { target c++17 } } |
| |
| // Copyright (C) 2017-2021 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++ 2017 27.7, range access [iterator.range] |
| |
| #include <iterator> |
| |
| void |
| test01() |
| { |
| using std::reverse_iterator; |
| static int i[1]; |
| static_assert(std::cbegin(i) == i); |
| static_assert(std::cend(i) == i+1); |
| static_assert(std::rbegin(i) == reverse_iterator<int*>(i+1)); |
| static_assert(std::rend(i) == reverse_iterator<int*>(i)); |
| static_assert(std::crbegin(i) == reverse_iterator<int*>(i+1)); |
| static_assert(std::crend(i) == reverse_iterator<int*>(i)); |
| } |
| |
| void |
| test02() |
| { |
| static int i[] = { 1, 2 }; |
| static_assert(std::distance(std::begin(i), std::end(i)) == 2); |
| static_assert(std::distance(std::cbegin(i), std::cend(i)) == 2); |
| |
| // 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() |
| { |
| using std::reverse_iterator; |
| static constexpr std::initializer_list<int> il{1}; |
| static_assert(std::cbegin(il) == il.begin()); |
| static_assert(std::cend(il) == il.end()); |
| static_assert(std::rbegin(il) == reverse_iterator<const int*>(il.end())); |
| static_assert(std::rend(il) == reverse_iterator<const int*>(il.begin())); |
| static_assert(std::crbegin(il) == reverse_iterator<const int*>(il.end())); |
| static_assert(std::crend(il) == reverse_iterator<const int*>(il.begin())); |
| |
| // LWG 3537 |
| static_assert( noexcept(std::rbegin(il)), "LWG 3537" ); |
| static_assert( noexcept(std::rend(il)), "LWG 3537" ); |
| } |