| 1 | // cxxabi.h subset for cancellation -*- C++ -*- |
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| 2 | |
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| 3 | // Copyright (C) 2007-2021 Free Software Foundation, Inc. |
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| 4 | // |
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| 5 | // This file is part of GCC. |
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| 6 | // |
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| 7 | // GCC is free software; you can redistribute it and/or modify |
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| 8 | // it under the terms of the GNU General Public License as published by |
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| 9 | // the Free Software Foundation; either version 3, or (at your option) |
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| 10 | // any later version. |
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| 11 | // |
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| 12 | // GCC is distributed in the hope that it will be useful, |
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| 13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | // GNU General Public License for more details. |
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| 16 | // |
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| 17 | // Under Section 7 of GPL version 3, you are granted additional |
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| 18 | // permissions described in the GCC Runtime Library Exception, version |
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| 19 | // 3.1, as published by the Free Software Foundation. |
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| 20 | |
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| 21 | // You should have received a copy of the GNU General Public License and |
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| 22 | // a copy of the GCC Runtime Library Exception along with this program; |
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| 23 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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| 24 | // <http://www.gnu.org/licenses/>. |
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| 25 | |
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| 26 | /** @file bits/cxxabi_forced.h |
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| 27 | * This is an internal header file, included by other library headers. |
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| 28 | * Do not attempt to use it directly. @headername{cxxabi.h} |
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| 29 | */ |
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| 30 | |
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| 31 | #ifndef _CXXABI_FORCED_H |
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| 32 | #define _CXXABI_FORCED_H 1 |
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| 33 | |
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| 34 | #pragma GCC system_header |
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| 35 | |
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| 36 | #pragma GCC visibility push(default) |
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| 37 | |
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| 38 | #ifdef __cplusplus |
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| 39 | namespace __cxxabiv1 |
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| 40 | { |
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| 41 | /** |
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| 42 | * @brief Thrown as part of forced unwinding. |
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| 43 | * @ingroup exceptions |
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| 44 | * |
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| 45 | * A magic placeholder class that can be caught by reference to |
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| 46 | * recognize forced unwinding. |
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| 47 | */ |
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| 48 | class __forced_unwind |
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| 49 | { |
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| 50 | virtual ~__forced_unwind() throw(); |
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| 51 | |
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| 52 | // Prevent catch by value. |
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| 53 | virtual void __pure_dummy() = 0; |
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| 54 | }; |
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| 55 | } |
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| 56 | #endif // __cplusplus |
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| 57 | |
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| 58 | #pragma GCC visibility pop |
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| 59 | |
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| 60 | #endif // __CXXABI_FORCED_H |
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| 61 | |
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