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// Copyright (C) 2005 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 2, 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 COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

#include <algorithm>

#include <vector>

#include <testsuite_hooks.h>

void

test1()

{

  bool test __attribute__((unused)) = true;

  std::vector<bool> v;

  v.push_back(true);

  v.push_back(false);

  std::iter_swap(v.begin(), v.begin() + 1);

  VERIFY( v[0] == false && v[1] == true );

}

void

test2()

{

  bool test __attribute__((unused)) = true;

  std::vector<int> v;

  v.push_back(1);

  v.push_back(2);

  std::iter_swap(v.begin(), v.begin() + 1);

  VERIFY( v[0] == 2 && v[1] == 1 );

}

int int_swap_count;

struct X {};

void swap(X&, X&)

{ ++int_swap_count; }

void

test3()

{

  bool test __attribute__((unused)) = true;

  int_swap_count = 0;

  X i, j;

  std::iter_swap(&i, &j);

  VERIFY( int_swap_count == 1 );

}

// libstdc++/20577

int main()

{

  test1();

  test2();

  test3();

  return 0;

}