| // Exception Handling support header for -*- C++ -*- |
| |
| // Copyright (C) 1995-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of GCC. |
| // |
| // GCC is free software; you can redistribute it and/or modify |
| // it under the terms of the GNU General Public License as published by |
| // the Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| // |
| // GCC is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| // |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| /** @file exception |
| * This is a Standard C++ Library header. |
| */ |
| |
| #ifndef __EXCEPTION__ |
| #define __EXCEPTION__ |
| |
| #pragma GCC system_header |
| |
| #pragma GCC visibility push(default) |
| |
| #include <bits/c++config.h> |
| #include <bits/exception.h> |
| |
| extern "C++" { |
| |
| namespace std |
| { |
| /** @addtogroup exceptions |
| * @{ |
| */ |
| |
| /** If an %exception is thrown which is not listed in a function's |
| * %exception specification, one of these may be thrown. |
| * |
| * @ingroup exceptions |
| */ |
| class bad_exception : public exception |
| { |
| public: |
| bad_exception() _GLIBCXX_USE_NOEXCEPT { } |
| |
| // This declaration is not useless: |
| // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118 |
| virtual ~bad_exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT; |
| |
| // See comment in eh_exception.cc. |
| virtual const char* |
| what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT; |
| }; |
| |
| /// If you write a replacement %terminate handler, it must be of this type. |
| typedef void (*terminate_handler) (); |
| |
| /// If you write a replacement %unexpected handler, it must be of this type. |
| typedef void (*unexpected_handler) (); |
| |
| /// Takes a new handler function as an argument, returns the old function. |
| terminate_handler set_terminate(terminate_handler) _GLIBCXX_USE_NOEXCEPT; |
| |
| #if __cplusplus >= 201103L |
| /// Return the current terminate handler. |
| terminate_handler get_terminate() noexcept; |
| #endif |
| |
| /** The runtime will call this function if %exception handling must be |
| * abandoned for any reason. It can also be called by the user. */ |
| void terminate() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__)); |
| |
| /// Takes a new handler function as an argument, returns the old function. |
| unexpected_handler set_unexpected(unexpected_handler) _GLIBCXX_USE_NOEXCEPT; |
| |
| #if __cplusplus >= 201103L |
| /// Return the current unexpected handler. |
| unexpected_handler get_unexpected() noexcept; |
| #endif |
| |
| /** The runtime will call this function if an %exception is thrown which |
| * violates the function's %exception specification. */ |
| void unexpected() __attribute__ ((__noreturn__)); |
| |
| /** [18.6.4]/1: 'Returns true after completing evaluation of a |
| * throw-expression until either completing initialization of the |
| * exception-declaration in the matching handler or entering `unexpected()` |
| * due to the throw; or after entering `terminate()` for any reason |
| * other than an explicit call to `terminate()`. [Note: This includes |
| * stack unwinding [15.2]. end note]' |
| * |
| * 2: 'When `uncaught_exception()` is true, throwing an |
| * %exception can result in a call of 1terminate()` |
| * (15.5.1).' |
| */ |
| _GLIBCXX17_DEPRECATED |
| bool uncaught_exception() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__)); |
| |
| #if __cplusplus >= 201703L || !defined(__STRICT_ANSI__) // c++17 or gnu++98 |
| #define __cpp_lib_uncaught_exceptions 201411L |
| /** The number of uncaught exceptions. |
| * @since C++17, or any non-strict mode, e.g. `-std=gnu++98` |
| * @see uncaught_exception() |
| */ |
| int uncaught_exceptions() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__)); |
| #endif |
| |
| /// @} group exceptions |
| } // namespace std |
| |
| namespace __gnu_cxx |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| /** |
| * @brief A replacement for the standard terminate_handler which |
| * prints more information about the terminating exception (if any) |
| * on stderr. |
| * |
| * @ingroup exceptions |
| * |
| * Call |
| * @code |
| * std::set_terminate(__gnu_cxx::__verbose_terminate_handler) |
| * @endcode |
| * to use. For more info, see |
| * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html |
| * |
| * In 3.4 and later, this is on by default. |
| */ |
| void __verbose_terminate_handler(); |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace |
| |
| } // extern "C++" |
| |
| #pragma GCC visibility pop |
| |
| #if (__cplusplus >= 201103L) |
| #include <bits/exception_ptr.h> |
| #include <bits/nested_exception.h> |
| #endif |
| |
| #endif |