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1 | // Copyright (C) 2004 Free Software Foundation, Inc. |
2 | // | |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 2, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING. If not, write to the Free | |
83f51799 | 16 | // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
390e4c0d BK |
17 | // USA. |
18 | ||
19 | #include <vector> | |
20 | #include <ext/new_allocator.h> | |
21 | ||
22 | using namespace std; | |
23 | using __gnu_cxx::new_allocator; | |
24 | ||
25 | template<typename T> | |
26 | class clear_alloc : public new_allocator<T> | |
27 | { | |
28 | public: | |
29 | ||
30 | template <typename T1> | |
31 | struct rebind | |
32 | { typedef clear_alloc<T1> other; }; | |
33 | ||
34 | virtual void clear() throw() | |
35 | { } | |
36 | ||
37 | clear_alloc() throw() | |
38 | { } | |
39 | ||
40 | clear_alloc(clear_alloc const& _wa) throw() | |
41 | { } | |
42 | ||
43 | template<typename T1> | |
44 | clear_alloc(clear_alloc<T1> const& _wa) throw() | |
45 | { } | |
46 | ||
47 | virtual ~clear_alloc() throw() | |
48 | { this->clear(); } | |
49 | ||
50 | T* allocate(typename new_allocator<T>::size_type n, const void *hint = 0) | |
51 | { | |
52 | this->clear(); | |
53 | return new_allocator<T>::allocate(n, hint); | |
54 | } | |
55 | ||
56 | void deallocate(T *ptr, typename new_allocator<T>::size_type n) | |
57 | { | |
58 | this->clear(); | |
59 | new_allocator<T>::deallocate(ptr, n); | |
60 | } | |
61 | }; | |
62 | ||
63 | template<typename Container> | |
64 | void Check_Container() | |
65 | { | |
66 | Container* pic = new Container; | |
67 | int x = 230; | |
68 | ||
69 | while (x--) | |
70 | { | |
71 | pic->push_back(x); | |
72 | } | |
73 | ||
74 | pic->get_allocator(); | |
75 | ||
76 | // The following has led to infinite recursions or cores. | |
77 | pic->clear(); | |
78 | ||
79 | delete pic; | |
80 | } | |
81 | ||
82 | ||
83 | int main() | |
84 | { | |
85 | Check_Container<std::vector<bool, clear_alloc<bool> > >(); | |
86 | return 0; | |
87 | } | |
88 |