1 | // cxxabi.h subset for cancellation -*- C++ -*- |
2 | |
3 | // Copyright (C) 2007-2017 Free Software Foundation, Inc. |
4 | // |
5 | // This file is part of GCC. |
6 | // |
7 | // GCC is free software; you can redistribute it and/or modify |
8 | // it under the terms of the GNU General Public License as published by |
9 | // the Free Software Foundation; either version 3, or (at your option) |
10 | // any later version. |
11 | // |
12 | // GCC is distributed in the hope that it will be useful, |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | // GNU General Public License for more details. |
16 | // |
17 | // Under Section 7 of GPL version 3, you are granted additional |
18 | // permissions described in the GCC Runtime Library Exception, version |
19 | // 3.1, as published by the Free Software Foundation. |
20 | |
21 | // You should have received a copy of the GNU General Public License and |
22 | // a copy of the GCC Runtime Library Exception along with this program; |
23 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
24 | // <http://www.gnu.org/licenses/>. |
25 | |
26 | /** @file bits/cxxabi_forced.h |
27 | * This is an internal header file, included by other library headers. |
28 | * Do not attempt to use it directly. @headername{cxxabi.h} |
29 | */ |
30 | |
31 | #ifndef _CXXABI_FORCED_H |
32 | #define _CXXABI_FORCED_H 1 |
33 | |
34 | #pragma GCC system_header |
35 | |
36 | #pragma GCC visibility push(default) |
37 | |
38 | #ifdef __cplusplus |
39 | namespace __cxxabiv1 |
40 | { |
41 | /** |
42 | * @brief Thrown as part of forced unwinding. |
43 | * @ingroup exceptions |
44 | * |
45 | * A magic placeholder class that can be caught by reference to |
46 | * recognize forced unwinding. |
47 | */ |
48 | class __forced_unwind |
49 | { |
50 | virtual ~__forced_unwind() throw(); |
51 | |
52 | // Prevent catch by value. |
53 | virtual void __pure_dummy() = 0; |
54 | }; |
55 | } |
56 | #endif // __cplusplus |
57 | |
58 | #pragma GCC visibility pop |
59 | |
60 | #endif // __CXXABI_FORCED_H |
61 | |