1 // cxxabi.h subset for cancellation -*- C++ -*- 2 3 // Copyright (C) 2007-2013 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
