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

// 2010-02-10  Paolo Carlini  <paolo.carlini@oracle.com> 

//

// 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 <unordered_set>

#include <string>

#include <testsuite_hooks.h>

// libstdc++/24061

void test01()

{

  bool test __attribute__((unused)) = true;

  typedef std::unordered_set<std::string> Set;

  typedef Set::iterator       iterator;

  typedef Set::const_iterator const_iterator;

  Set s1;

  s1.insert("all the love in the world");

  s1.insert("you know what you are?");

  s1.insert("the collector");

  s1.insert("the hand that feeds");

  s1.insert("love is not enough");

  s1.insert("every day is exactly the same");

  s1.insert("with teeth");

  s1.insert("only");

  s1.insert("getting smaller");

  s1.insert("sunspots");

  VERIFY( s1.size() == 10 );

  iterator it1 = s1.begin();

  ++it1;

  iterator it2 = it1;

  ++it2;

  iterator it3 = s1.erase(it1);

  VERIFY( s1.size() == 9 );

  VERIFY( it3 == it2 );

  VERIFY( *it3 == *it2 );

  iterator it4 = s1.begin();

  ++it4;

  ++it4;

  ++it4;

  iterator it5 = it4;

  ++it5;

  ++it5;

  iterator it6 = s1.erase(it4, it5);

  VERIFY( s1.size() == 7 );

  VERIFY( it6 == it5 );

  VERIFY( *it6 == *it5 );

  const_iterator it7 = s1.begin();

  ++it7;

  ++it7;

  ++it7;

  const_iterator it8 = it7;

  ++it8;

  const_iterator it9 = s1.erase(it7);

  VERIFY( s1.size() == 6 );

  VERIFY( it9 == it8 );

  VERIFY( *it9 == *it8 );

  const_iterator it10 = s1.begin();

  ++it10;

  const_iterator it11 = it10;

  ++it11;

  ++it11;

  ++it11;

  ++it11;

  const_iterator it12 = s1.erase(it10, it11);

  VERIFY( s1.size() == 2 );

  VERIFY( it12 == it11 );

  VERIFY( *it12 == *it11 );

  VERIFY( ++it12 == s1.end() );

  iterator it13 = s1.erase(s1.begin(), s1.end());

  VERIFY( s1.size() == 0 );

  VERIFY( it13 == s1.end() );

  VERIFY( it13 == s1.begin() );

}

int main()

{

  test01();

  return 0;

}