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// { 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_multiset<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");
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