54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
// { dg-do compile { target c++11 } }
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// Copyright (C) 2010-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <utility>
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template <class T>
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struct C
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{
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T t_;
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C() { }
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template <class U,
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class = typename std::enable_if
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<
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!std::is_lvalue_reference<U>::value
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>::type>
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C(U&& u) : t_(std::forward<T>(std::move(u).get())) { }
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C(C&& c) : t_(std::forward<T>(c.t_)) { }
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};
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template <class T>
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struct Derived
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: C<T>
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{
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Derived() { }
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Derived(Derived&& d) : C<T>(std::forward<C<T>>(d)) { }
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};
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2951.html
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// Test E.
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int main()
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{
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Derived<int> d;
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Derived<int> d2(std::move(d));
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}
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