// 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 // . /** @file exception * This is a Standard C++ Library header. */ #ifndef __EXCEPTION__ #define __EXCEPTION__ #pragma GCC system_header #pragma GCC visibility push(default) #include #include 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_SUGGEST("std::uncaught_exceptions()") 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 #include #endif #endif