1*38fd1498Szrj // cxxabi.h subset for cancellation -*- C++ -*- 2*38fd1498Szrj 3*38fd1498Szrj // Copyright (C) 2007-2018 Free Software Foundation, Inc. 4*38fd1498Szrj // 5*38fd1498Szrj // This file is part of GCC. 6*38fd1498Szrj // 7*38fd1498Szrj // GCC is free software; you can redistribute it and/or modify 8*38fd1498Szrj // it under the terms of the GNU General Public License as published by 9*38fd1498Szrj // the Free Software Foundation; either version 3, or (at your option) 10*38fd1498Szrj // any later version. 11*38fd1498Szrj // 12*38fd1498Szrj // GCC is distributed in the hope that it will be useful, 13*38fd1498Szrj // but WITHOUT ANY WARRANTY; without even the implied warranty of 14*38fd1498Szrj // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15*38fd1498Szrj // GNU General Public License for more details. 16*38fd1498Szrj // 17*38fd1498Szrj // Under Section 7 of GPL version 3, you are granted additional 18*38fd1498Szrj // permissions described in the GCC Runtime Library Exception, version 19*38fd1498Szrj // 3.1, as published by the Free Software Foundation. 20*38fd1498Szrj 21*38fd1498Szrj // You should have received a copy of the GNU General Public License and 22*38fd1498Szrj // a copy of the GCC Runtime Library Exception along with this program; 23*38fd1498Szrj // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24*38fd1498Szrj // <http://www.gnu.org/licenses/>. 25*38fd1498Szrj 26*38fd1498Szrj /** @file bits/cxxabi_forced.h 27*38fd1498Szrj * This is an internal header file, included by other library headers. 28*38fd1498Szrj * Do not attempt to use it directly. @headername{cxxabi.h} 29*38fd1498Szrj */ 30*38fd1498Szrj 31*38fd1498Szrj #ifndef _CXXABI_FORCED_H 32*38fd1498Szrj #define _CXXABI_FORCED_H 1 33*38fd1498Szrj 34*38fd1498Szrj #pragma GCC system_header 35*38fd1498Szrj 36*38fd1498Szrj #pragma GCC visibility push(default) 37*38fd1498Szrj 38*38fd1498Szrj #ifdef __cplusplus 39*38fd1498Szrj namespace __cxxabiv1 40*38fd1498Szrj { 41*38fd1498Szrj /** 42*38fd1498Szrj * @brief Thrown as part of forced unwinding. 43*38fd1498Szrj * @ingroup exceptions 44*38fd1498Szrj * 45*38fd1498Szrj * A magic placeholder class that can be caught by reference to 46*38fd1498Szrj * recognize forced unwinding. 47*38fd1498Szrj */ 48*38fd1498Szrj class __forced_unwind 49*38fd1498Szrj { 50*38fd1498Szrj virtual ~__forced_unwind() throw(); 51*38fd1498Szrj 52*38fd1498Szrj // Prevent catch by value. 53*38fd1498Szrj virtual void __pure_dummy() = 0; 54*38fd1498Szrj }; 55*38fd1498Szrj } 56*38fd1498Szrj #endif // __cplusplus 57*38fd1498Szrj 58*38fd1498Szrj #pragma GCC visibility pop 59*38fd1498Szrj 60*38fd1498Szrj #endif // __CXXABI_FORCED_H 61