| // Copyright (C) 2020-2023 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/>. |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do compile { target c++2a } } |
| // { dg-xfail-if "not supported" { debug_mode } } |
| |
| #include <vector> |
| #include <testsuite_hooks.h> |
| |
| constexpr bool |
| test01() |
| { |
| std::vector<bool> c1{ 1, 0, 1 }, c2{ 1, 0, 1, 0 }, c3{ 1, 1, 1 }; |
| VERIFY( c1 == c1 ); |
| VERIFY( std::is_eq(c1 <=> c1) ); |
| VERIFY( c1 < c2 ); |
| VERIFY( std::is_lt(c1 <=> c2) ); |
| VERIFY( c1 < c3 ); |
| VERIFY( std::is_lt(c1 <=> c3) ); |
| VERIFY( c2 < c3 ); |
| VERIFY( std::is_lt(c2 <=> c3) ); |
| |
| static_assert( std::totally_ordered<std::vector<bool>> ); |
| |
| static_assert( std::three_way_comparable<std::vector<bool>, |
| std::strong_ordering> ); |
| |
| return true; |
| } |
| |
| constexpr bool |
| test05() |
| { |
| // vector<bool> iterators are random access, so should support <=> |
| |
| std::vector<bool> c{ 1, 1, 1 }; |
| VERIFY( c.begin() == c.cbegin() ); |
| VERIFY( std::is_eq(c.begin() <=> c.cbegin()) ); |
| |
| VERIFY( c.begin() < c.end() ); |
| VERIFY( std::is_lt(c.begin() <=> c.end()) ); |
| |
| VERIFY( c.begin() < c.cend() ); |
| VERIFY( std::is_lt(c.begin() <=> c.cend()) ); |
| |
| VERIFY( c.crbegin() == c.rbegin() ); |
| VERIFY( std::is_eq(c.crbegin() <=> c.rbegin()) ); |
| |
| VERIFY( c.rend() > c.rbegin() ); |
| VERIFY( std::is_gt(c.rend() <=> c.rbegin()) ); |
| |
| static_assert( std::same_as<decltype(c.begin() <=> c.begin()), |
| std::strong_ordering> ); |
| |
| return true; |
| } |
| |
| static_assert( test01() ); |
| static_assert( test05() ); |