--- /dev/null
+// Copyright (C) 2004, 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 <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;
+}
+