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// { dg-options "-std=gnu++0x" }
// Copyright (C) 2010 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/>.
#include <list>
#include <testsuite_hooks.h>
template <class T>
struct C
{
T t_;
template <class U,
class = typename std::enable_if
<
!std::is_lvalue_reference<U>::value
>::type>
C(U&& u) : t_(std::forward<T>(std::move(u).get())) { }
};
class A
{
int data_;
public:
explicit
A(int data = 1)
: data_(data) { }
~A() { data_ = -1; }
void test() const
{
bool test __attribute__((unused)) = true;
VERIFY( data_ == 3 );
}
};
class Awrap
{
A& a_;
public:
explicit Awrap(A& a) : a_(a) { }
const A& get() const { return a_; }
A& get() { return a_; }
};
template <class C>
void test(C c)
{
c.t_.test();
}
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2951.html
// Test D.
int main()
{
std::list<C<const A&> > list;
A a(3);
C<const A&> c((Awrap(a)));
list.push_back(c);
test(c);
test(list.front());
}
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