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// Set iterator invalidation tests

// Copyright (C) 2003, 2004, 2005, 2006, 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/>.

#include <debug/set>

#include <iterator>

#include <testsuite_hooks.h>

using __gnu_debug::set;

using std::advance;

// Erase

void test02()

{

  bool test __attribute__((unused)) = true;

  set<int> v;

  for (int i = 0; i < 20; ++i)

    v.insert(i);

  // Single element erase (middle)

  set<int>::iterator before = v.begin();

  set<int>::iterator at = before;

  advance(at, 3);

  set<int>::iterator after = at;

  ++after;

  v.erase(at);

  VERIFY(before._M_dereferenceable());

  VERIFY(at._M_singular());

  VERIFY(after._M_dereferenceable());

  // Multiple element erase

  before = v.begin();

  at = before;

  advance(at, 3);

  after = at;

  advance(after, 4);

  v.erase(at, after);

  VERIFY(before._M_dereferenceable());

  VERIFY(at._M_singular());

  // clear()

  before = v.begin();

  set<int>::iterator finish = v.end();

  VERIFY(before._M_dereferenceable());

  v.clear();

  VERIFY(before._M_singular());

  VERIFY(!finish._M_singular() && !finish._M_dereferenceable());

}

int main()

{

  test02();

  return 0;

}