// cxxabi.h subset for cancellation -*- C++ -*- // Copyright (C) 2007-2018 Free Software Foundation, Inc. // // This file is part of GCC. // // GCC 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 3, or (at your option) // any later version. // // GCC 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. // // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // . /** @file bits/cxxabi_forced.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{cxxabi.h} */ #ifndef _CXXABI_FORCED_H #define _CXXABI_FORCED_H 1 #pragma GCC system_header #pragma GCC visibility push(default) #ifdef __cplusplus namespace __cxxabiv1 { /** * @brief Thrown as part of forced unwinding. * @ingroup exceptions * * A magic placeholder class that can be caught by reference to * recognize forced unwinding. */ class __forced_unwind { virtual ~__forced_unwind() throw(); // Prevent catch by value. virtual void __pure_dummy() = 0; }; } #endif // __cplusplus #pragma GCC visibility pop #endif // __CXXABI_FORCED_H