exception.h
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// Exception Handling support header for -*- C++ -*-
// Copyright (C) 2016-2021 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 bits/exception.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly.
*/
#ifndef __EXCEPTION_H
#define __EXCEPTION_H 1
#pragma GCC system_header
#pragma GCC visibility push(default)
#include <bits/c++config.h>
extern "C++" {
namespace std
{
/**
* @defgroup exceptions Exceptions
* @ingroup diagnostics
* @since C++98
*
* Classes and functions for reporting errors via exceptions.
* @{
*/
/**
* @brief Base class for all library exceptions.
*
* This is the base class for all exceptions thrown by the standard
* library, and by certain language expressions. You are free to derive
* your own %exception classes, or use a different hierarchy, or to
* throw non-class data (e.g., fundamental types).
*/
class exception
{
public:
exception() _GLIBCXX_NOTHROW { }
virtual ~exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
#if __cplusplus >= 201103L
exception(const exception&) = default;
exception& operator=(const exception&) = default;
exception(exception&&) = default;
exception& operator=(exception&&) = default;
#endif
/** Returns a C-style character string describing the general cause
* of the current error. */
virtual const char*
what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
};
/// @}
} // namespace std
}
#pragma GCC visibility pop
#endif
c++config.h
std
ISO C++ entities toplevel namespace is std.
std::exception
Base class for all library exceptions.
Definition: exception.h:62
std::exception::what
virtual const char * what() const noexcept