| // 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; |
| } |
| |