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// List iterator invalidation tests

// Copyright (C) 2003, 2004, 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 <debug/list>

#include <iterator>

#include <testsuite_hooks.h>

using __gnu_debug::list;

using std::advance;

bool test = true;

// Erase

void test03()

{

  list<int> v(20, 42);

  // Single element erase (middle)

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

  list<int>::iterator at = before;

  advance(at, 3);

  list<int>::iterator after = at;

  at = v.erase(at);

  VERIFY(before._M_dereferenceable());

  VERIFY(at._M_dereferenceable());

  VERIFY(after._M_singular());

  // Single element erase (end)

  before = v.begin();

  at = before;

  after = at;

  ++after;

  at = v.erase(at);

  VERIFY(before._M_singular());

  VERIFY(at._M_dereferenceable());

  VERIFY(after._M_dereferenceable());

  // Multiple element erase

  before = v.begin();

  at = before;

  advance(at, 3);

  after = at;

  advance(after, 3);

  v.erase(at, after);

  VERIFY(before._M_dereferenceable());

  VERIFY(at._M_singular());

  // clear()

  before = v.begin();

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

  VERIFY(before._M_dereferenceable());

  v.clear();

  VERIFY(before._M_singular());

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

}

int main()

{

  test03();

  return 0;

}