libstdc++
exception.h
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1// Exception Handling support header for -*- C++ -*-
2
3// Copyright (C) 2016-2022 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 bits/exception.h
27 * This is an internal header file, included by other library headers.
28 * Do not attempt to use it directly.
29 */
30
31#ifndef __EXCEPTION_H
32#define __EXCEPTION_H 1
33
34#pragma GCC system_header
35
36#include <bits/c++config.h>
37
38extern "C++" {
39
40namespace std _GLIBCXX_VISIBILITY(default)
41{
42 /**
43 * @defgroup exceptions Exceptions
44 * @ingroup diagnostics
45 * @since C++98
46 *
47 * Classes and functions for reporting errors via exceptions.
48 * @{
49 */
50
51 /**
52 * @brief Base class for all library exceptions.
53 *
54 * This is the base class for all exceptions thrown by the standard
55 * library, and by certain language expressions. You are free to derive
56 * your own %exception classes, or use a different hierarchy, or to
57 * throw non-class data (e.g., fundamental types).
58 */
60 {
61 public:
62 exception() _GLIBCXX_NOTHROW { }
63 virtual ~exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
64#if __cplusplus >= 201103L
65 exception(const exception&) = default;
66 exception& operator=(const exception&) = default;
67 exception(exception&&) = default;
68 exception& operator=(exception&&) = default;
69#endif
70
71 /** Returns a C-style character string describing the general cause
72 * of the current error. */
73 virtual const char*
74 what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
75 };
76
77 /// @}
78
79} // namespace std
80
81}
82
83#endif
ISO C++ entities toplevel namespace is std.
Base class for all library exceptions.
Definition: exception.h:60
virtual const char * what() const noexcept