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// List 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/list>

#include <iterator>

#include <testsuite_hooks.h>

// Erase

void test03()

{

  using std::advance;

  bool test __attribute__((unused)) = true;

  typedef __gnu_debug::list<int> list_type;

  list_type v(20, 42);

  // Single element erase (middle)

  list_type::iterator before = v.begin();

  list_type::iterator at = before;

  advance(at, 3);

  list_type::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_type::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;

}