| 1 |
// Exception Handling support header for -*- C++ -*- |
| 2 |
|
| 3 |
// Copyright (C) 1995-2021 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 |
#pragma GCC visibility push(default) |
| 36 |
|
| 37 |
#include <bits/c++config.h> |
| 38 |
#include <bits/exception.h> |
| 39 |
|
| 40 |
extern "C++" { |
| 41 |
|
| 42 |
namespace std |
| 43 |
{ |
| 44 |
/** @addtogroup exceptions |
| 45 |
* @{ |
| 46 |
*/ |
| 47 |
|
| 48 |
/** If an %exception is thrown which is not listed in a function's |
| 49 |
* %exception specification, one of these may be thrown. */ |
| 50 |
class bad_exception : public exception |
| 51 |
{ |
| 52 |
public: |
| 53 |
bad_exception() _GLIBCXX_USE_NOEXCEPT { } |
| 54 |
|
| 55 |
// This declaration is not useless: |
| 56 |
// http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118 |
| 57 |
virtual ~bad_exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT; |
| 58 |
|
| 59 |
// See comment in eh_exception.cc. |
| 60 |
virtual const char* |
| 61 |
what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT; |
| 62 |
}; |
| 63 |
|
| 64 |
/// If you write a replacement %terminate handler, it must be of this type. |
| 65 |
typedef void (*terminate_handler) (); |
| 66 |
|
| 67 |
/// If you write a replacement %unexpected handler, it must be of this type. |
| 68 |
typedef void (*unexpected_handler) (); |
| 69 |
|
| 70 |
/// Takes a new handler function as an argument, returns the old function. |
| 71 |
terminate_handler set_terminate(terminate_handler) _GLIBCXX_USE_NOEXCEPT; |
| 72 |
|
| 73 |
#if __cplusplus >= 201103L |
| 74 |
/// Return the current terminate handler. |
| 75 |
terminate_handler get_terminate() noexcept; |
| 76 |
#endif |
| 77 |
|
| 78 |
/** The runtime will call this function if %exception handling must be |
| 79 |
* abandoned for any reason. It can also be called by the user. */ |
| 80 |
void terminate() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__)); |
| 81 |
|
| 82 |
/// Takes a new handler function as an argument, returns the old function. |
| 83 |
unexpected_handler set_unexpected(unexpected_handler) _GLIBCXX_USE_NOEXCEPT; |
| 84 |
|
| 85 |
#if __cplusplus >= 201103L |
| 86 |
/// Return the current unexpected handler. |
| 87 |
unexpected_handler get_unexpected() noexcept; |
| 88 |
#endif |
| 89 |
|
| 90 |
/** The runtime will call this function if an %exception is thrown which |
| 91 |
* violates the function's %exception specification. */ |
| 92 |
void unexpected() __attribute__ ((__noreturn__)); |
| 93 |
|
| 94 |
/** [18.6.4]/1: 'Returns true after completing evaluation of a |
| 95 |
* throw-expression until either completing initialization of the |
| 96 |
* exception-declaration in the matching handler or entering @c unexpected() |
| 97 |
* due to the throw; or after entering @c terminate() for any reason |
| 98 |
* other than an explicit call to @c terminate(). [Note: This includes |
| 99 |
* stack unwinding [15.2]. end note]' |
| 100 |
* |
| 101 |
* 2: 'When @c uncaught_exception() is true, throwing an |
| 102 |
* %exception can result in a call of @c terminate() |
| 103 |
* (15.5.1).' |
| 104 |
*/ |
| 105 |
_GLIBCXX17_DEPRECATED |
| 106 |
bool uncaught_exception() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__)); |
| 107 |
|
| 108 |
#if __cplusplus >= 201703L || !defined(__STRICT_ANSI__) // c++17 or gnu++98 |
| 109 |
#define __cpp_lib_uncaught_exceptions 201411L |
| 110 |
/// The number of uncaught exceptions. |
| 111 |
int uncaught_exceptions() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__)); |
| 112 |
#endif |
| 113 |
|
| 114 |
/// @} group exceptions |
| 115 |
} // namespace std |
| 116 |
|
| 117 |
namespace __gnu_cxx |
| 118 |
{ |
| 119 |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 120 |
|
| 121 |
/** |
| 122 |
* @brief A replacement for the standard terminate_handler which |
| 123 |
* prints more information about the terminating exception (if any) |
| 124 |
* on stderr. |
| 125 |
* |
| 126 |
* @ingroup exceptions |
| 127 |
* |
| 128 |
* Call |
| 129 |
* @code |
| 130 |
* std::set_terminate(__gnu_cxx::__verbose_terminate_handler) |
| 131 |
* @endcode |
| 132 |
* to use. For more info, see |
| 133 |
* http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html |
| 134 |
* |
| 135 |
* In 3.4 and later, this is on by default. |
| 136 |
*/ |
| 137 |
void __verbose_terminate_handler(); |
| 138 |
|
| 139 |
_GLIBCXX_END_NAMESPACE_VERSION |
| 140 |
} // namespace |
| 141 |
|
| 142 |
} // extern "C++" |
| 143 |
|
| 144 |
#pragma GCC visibility pop |
| 145 |
|
| 146 |
#if (__cplusplus >= 201103L) |
| 147 |
#include <bits/exception_ptr.h> |
| 148 |
#include <bits/nested_exception.h> |
| 149 |
#endif |
| 150 |
|
| 151 |
#endif |
