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// { dg-do compile }

// { dg-options "-std=gnu++0x" }

// Copyright (C) 2011 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 <utility>

#include <tuple>

struct NoCon

{

  NoCon() = delete;

  NoCon(const NoCon&) = delete;

};

struct RefCheck1

{

  RefCheck1(NoCon&, NoCon&&) { }

  RefCheck1() = delete;

  RefCheck1(const RefCheck1&) = delete;

};

struct RefCheck2

{

  RefCheck2(const NoCon&, const NoCon&&, NoCon&) { }

  RefCheck2() = delete;

  RefCheck2(const RefCheck2&) = delete;

};

struct Default

{

  Default();

  Default(const Default&) = delete;

};

// libstdc++/51183

void test01(std::tuple<NoCon&, NoCon&&> t1,

            std::tuple<NoCon&, NoCon&&, NoCon&> t2)

{

  std::pair<RefCheck1, RefCheck2>(std::piecewise_construct, t1, t2);

}

void test02(std::tuple<> t1, std::tuple<int> t2)

{

  std::pair<Default, int> A(std::piecewise_construct, t1, t2);

}