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

// Copyright (C) 2007, 2009 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/>.

// NOTE: This makes use of the fact that we know how moveable

// is implemented on set (via swap). If the implementation changed

// this test may begin to fail.

#include <unordered_set>

#include <utility>

#include <testsuite_hooks.h>

int main()

{

  bool test __attribute__((unused)) = true;

  std::unordered_set<int> a,b;

  a.insert(2);

  b.insert(1);

  b = std::move(a);

  VERIFY( b.find(2) != b.end() && a.find(1) == a.end() );

  std::unordered_set<int> c(std::move(b));

  VERIFY( c.find(2) != c.end() );

  VERIFY( b.find(2) == b.end() );

  return 0;

}