Mercurial > hg > CbC > CbC_gcc
view libstdc++-v3/testsuite/24_iterators/move_iterator/move_only.cc @ 152:2b5abeee2509
update gcc11
author | anatofuz |
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date | Mon, 25 May 2020 07:50:57 +0900 |
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// Copyright (C) 2020 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 } } #include <iterator> struct move_only_iterator { move_only_iterator() = default; move_only_iterator(move_only_iterator&&) = default; move_only_iterator& operator=(move_only_iterator&&) = default; move_only_iterator& operator++(); move_only_iterator operator++(int); int& operator*() const; bool operator==(const move_only_iterator&) const; }; template<> struct std::iterator_traits<move_only_iterator> { using value_type = int; using difference_type = std::ptrdiff_t; using iterator_category = std::input_iterator_tag; }; static_assert(std::input_iterator<move_only_iterator>); template<typename T> concept has_member_base = requires (T t) { std::forward<T>(t).base(); }; using move_only_move_iterator = std::move_iterator<move_only_iterator>; static_assert( ! has_member_base<move_only_move_iterator&> ); static_assert( ! has_member_base<const move_only_move_iterator&> ); static_assert( has_member_base<move_only_move_iterator> ); static_assert( ! has_member_base<const move_only_move_iterator> ); void test01() { move_only_move_iterator m1 = std::make_move_iterator(move_only_iterator{}); move_only_move_iterator m2; m2 = std::move(m1); }