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// Copyright (C) 2004 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 <deque>
#include <ext/new_allocator.h>
 
using namespace std;
using __gnu_cxx::new_allocator;
 
template<typename T>
  class clear_alloc : public new_allocator<T> 
  {
  public:
 
    template <typename T1>
      struct rebind 
      { typedef clear_alloc<T1> other; };
 
    virtual void clear() throw()
    { }
 
    clear_alloc() throw()
    { }
 
    clear_alloc(clear_alloc const&) throw() : new_allocator<T>() 
    { }
 
    template<typename T1>
    clear_alloc(clear_alloc<T1> const&) throw()
      { }
 
    virtual ~clear_alloc() throw()
    { this->clear(); }
 
    T* allocate(typename new_allocator<T>::size_type n, const void *hint = 0)
    {
      this->clear();
      return new_allocator<T>::allocate(n, hint);
    }
 
    void deallocate(T *ptr, typename new_allocator<T>::size_type n)
    {
      this->clear();
      new_allocator<T>::deallocate(ptr, n);
    }
  };
 
template<typename Container>
  void Check_Container()
  {
    Container* pic = new Container;
    int x = 230;
 
    while (x--)
      {
	pic->push_back(x);
      }
 
    pic->get_allocator();
 
    // The following has led to infinite recursions or cores.
    pic->clear();
 
    delete pic;
  }
 
 
int main()
{
  Check_Container<std::deque<int, clear_alloc<int> > >();
  return 0;
}