1 // Exception Handling support header for -*- C++ -*- 2 3 // Copyright (C) 1995-2024 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 exception 27 * This is a Standard C++ Library header. 28 */ 29 30 #ifndef __EXCEPTION__ 31 #define __EXCEPTION__ 32 33 #pragma GCC system_header 34 35 #include <bits/c++config.h> 36 #include <bits/exception.h> 37 38 #define __glibcxx_want_uncaught_exceptions 39 #include <bits/version.h> 40 41 extern "C++" { 42 43 namespace std _GLIBCXX_VISIBILITY(default) 44 { 45 /** @addtogroup exceptions 46 * @{ 47 */ 48 49 /** If an %exception is thrown which is not listed in a function's 50 * %exception specification, one of these may be thrown. 51 * 52 * @ingroup exceptions 53 */ 54 class bad_exception : public exception 55 { 56 public: 57 bad_exception() _GLIBCXX_USE_NOEXCEPT { } 58 59 // This declaration is not useless: 60 // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118 61 virtual ~bad_exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT; 62 63 // See comment in eh_exception.cc. 64 virtual const char* 65 what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT; 66 }; 67 68 /// If you write a replacement %terminate handler, it must be of this type. 69 typedef void (*terminate_handler) (); 70 71 /// Takes a new handler function as an argument, returns the old function. 72 terminate_handler set_terminate(terminate_handler) _GLIBCXX_USE_NOEXCEPT; 73 74 #if __cplusplus >= 201103L 75 /// Return the current terminate handler. 76 terminate_handler get_terminate() noexcept; 77 #endif 78 79 /** The runtime will call this function if %exception handling must be 80 * abandoned for any reason. It can also be called by the user. */ 81 void terminate() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__,__cold__)); 82 83 #if __cplusplus < 201703L || (__cplusplus <= 202002L && _GLIBCXX_USE_DEPRECATED) 84 /// If you write a replacement %unexpected handler, it must be of this type. 85 typedef void (*_GLIBCXX11_DEPRECATED unexpected_handler) (); 86 87 /** Takes a new handler function as an argument, returns the old function. 88 * 89 * @deprecated Removed from the C++ standard in C++17 90 */ 91 _GLIBCXX11_DEPRECATED 92 unexpected_handler set_unexpected(unexpected_handler) _GLIBCXX_USE_NOEXCEPT; 93 94 #if __cplusplus >= 201103L 95 /** Return the current unexpected handler. 96 * 97 * @since C++11 98 * @deprecated Removed from the C++ standard in C++17 99 */ 100 _GLIBCXX11_DEPRECATED 101 unexpected_handler get_unexpected() noexcept; 102 #endif 103 104 /** The runtime will call this function if an %exception is thrown which 105 * violates the function's %exception specification. 106 * 107 * @deprecated Removed from the C++ standard in C++17 108 */ 109 _GLIBCXX11_DEPRECATED 110 void unexpected() __attribute__ ((__noreturn__,__cold__)); 111 #endif 112 113 /** [18.6.4]/1: 'Returns true after completing evaluation of a 114 * throw-expression until either completing initialization of the 115 * exception-declaration in the matching handler or entering `unexpected()` 116 * due to the throw; or after entering `terminate()` for any reason 117 * other than an explicit call to `terminate()`. [Note: This includes 118 * stack unwinding [15.2]. end note]' 119 * 120 * 2: 'When `uncaught_exception()` is true, throwing an 121 * %exception can result in a call of 1terminate()` 122 * (15.5.1).' 123 */ 124 _GLIBCXX17_DEPRECATED_SUGGEST("std::uncaught_exceptions()") 125 bool uncaught_exception() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__)); 126 127 #ifdef __cpp_lib_uncaught_exceptions // C++ >= 17 || GNU++ >= 03 128 /** The number of uncaught exceptions. 129 * @since C++17, or any non-strict mode, e.g. `-std=gnu++98` 130 * @see uncaught_exception() 131 */ 132 int uncaught_exceptions() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__)); 133 #endif 134 135 /// @} group exceptions 136 } // namespace std 137 138 namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) 139 { 140 _GLIBCXX_BEGIN_NAMESPACE_VERSION 141 142 /** 143 * @brief A replacement for the standard terminate_handler which 144 * prints more information about the terminating exception (if any) 145 * on stderr. 146 * 147 * @ingroup exceptions 148 * 149 * Call 150 * @code 151 * std::set_terminate(__gnu_cxx::__verbose_terminate_handler) 152 * @endcode 153 * to use. For more info, see 154 * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html 155 * 156 * In 3.4 and later, this is on by default. 157 */ 158 void __verbose_terminate_handler(); 159 160 _GLIBCXX_END_NAMESPACE_VERSION 161 } // namespace 162 163 } // extern "C++" 164 165 #if (__cplusplus >= 201103L) 166 #include <bits/exception_ptr.h> 167 #include <bits/nested_exception.h> 168 #endif 169 170 #endif 171
Indexes created Mon Jun 01 00:24:59 UTC 2026