| // { dg-options "-std=gnu++0x" } |
| // { dg-do compile } |
| |
| // Copyright (C) 2013 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/>. |
| |
| // libstdc++/55043 |
| |
| #include <unordered_set> |
| #include <vector> |
| |
| struct MoveOnly |
| { |
| MoveOnly() = default; |
| MoveOnly(MoveOnly&&) = default; |
| }; |
| |
| struct equal { |
| bool operator()(const MoveOnly&, const MoveOnly) const { return true; } |
| }; |
| struct hash { |
| std::size_t operator()(const MoveOnly&) const { return 0; } |
| }; |
| |
| template<typename Alloc> |
| using test_type = std::unordered_set<MoveOnly, hash, equal, Alloc>; |
| |
| void test01() |
| { |
| typedef test_type<std::allocator<MoveOnly>> uim; |
| std::vector<uim> v; |
| v.emplace_back(uim()); |
| } |
| |
| // Unordered containers don't use allocator_traits yet so need full |
| // Allocator interface, derive from std::allocator to get it. |
| template<typename T, bool R> |
| struct Alloc : std::allocator<T> |
| { |
| template<typename U> |
| struct rebind { typedef Alloc<U, R> other; }; |
| |
| Alloc() = default; |
| |
| template<typename U> |
| Alloc(const Alloc<U, R>&) { } |
| |
| typedef typename std::conditional<R, T&&, const T&>::type arg_type; |
| |
| void construct(T* p, arg_type) const |
| { new((void*)p) T(); } |
| }; |
| |
| // verify is_copy_constructible depends on allocator |
| typedef test_type<Alloc<MoveOnly, true>> uim_rval; |
| static_assert(!std::is_copy_constructible<uim_rval>::value, "is not copyable"); |
| |
| typedef test_type<Alloc<MoveOnly, false>> uim_lval; |
| static_assert(std::is_copy_constructible<uim_lval>::value, "is copyable"); |