1 // Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007, 2 // 2009, 2010 3 // Free Software Foundation 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 #include "tinfo.h" 27 28 namespace __cxxabiv1 { 29 30 __pbase_type_info:: 31 ~__pbase_type_info () 32 {} 33 34 bool __pbase_type_info:: 35 __do_catch (const type_info *thr_type, 36 void **thr_obj, 37 unsigned outer) const 38 { 39 if (*this == *thr_type) 40 return true; // same type 41 42 #ifdef __GXX_RTTI 43 if (typeid (*this) != typeid (*thr_type)) 44 return false; // not both same kind of pointers 45 #endif 46 47 if (!(outer & 1)) 48 // We're not the same and our outer pointers are not all const qualified 49 // Therefore there must at least be a qualification conversion involved 50 // But for that to be valid, our outer pointers must be const qualified. 51 return false; 52 53 const __pbase_type_info *thrown_type = 54 static_cast <const __pbase_type_info *> (thr_type); 55 56 if (thrown_type->__flags & ~__flags) 57 // We're less qualified. 58 return false; 59 60 if (!(__flags & __const_mask)) 61 outer &= ~1; 62 63 return __pointer_catch (thrown_type, thr_obj, outer); 64 } 65 66 } 67