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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// 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& _wa) throw()
{ }
template<typename T1>
clear_alloc(clear_alloc<T1> const& _wa) 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;
}