1// cxxabi.h subset for inclusion by other library headers -*- C++ -*-
2
3// Copyright (C) 2007, 2009 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#ifndef _CXXABI_FORCED_H
27#define _CXXABI_FORCED_H 1
28
29#pragma GCC visibility push(default)
30
31#ifdef __cplusplus
32namespace __cxxabiv1
33{
34  /**
35   *  @brief Thrown as part of forced unwinding.
36   *  @ingroup exceptions
37   *
38   *  A magic placeholder class that can be caught by reference to
39   *  recognize forced unwinding.
40   */
41  class __forced_unwind
42  {
43    virtual ~__forced_unwind() throw();
44    virtual void __pure_dummy() = 0; // prevent catch by value
45  };
46}
47#endif // __cplusplus
48
49#pragma GCC visibility pop
50
51#endif // __CXXABI_FORCED_H
52