1// Exception Handling support header for -*- C++ -*-
2
3// Copyright (C) 2016-2021 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 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#pragma GCC visibility push(default)
37
38#include <bits/c++config.h>
39
40extern "C++" {
41
42namespace std
43{
44 /**
45 * @defgroup exceptions Exceptions
46 * @ingroup diagnostics
47 * @since C++98
48 *
49 * Classes and functions for reporting errors via exceptions.
50 * @{
51 */
52
53 /**
54 * @brief Base class for all library exceptions.
55 *
56 * This is the base class for all exceptions thrown by the standard
57 * library, and by certain language expressions. You are free to derive
58 * your own %exception classes, or use a different hierarchy, or to
59 * throw non-class data (e.g., fundamental types).
60 */
61 class exception
62 {
63 public:
64 exception() _GLIBCXX_NOTHROW { }
65 virtual ~exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
66#if __cplusplus >= 201103L
67 exception(const exception&) = default;
68 exception& operator=(const exception&) = default;
69 exception(exception&&) = default;
70 exception& operator=(exception&&) = default;
71#endif
72
73 /** Returns a C-style character string describing the general cause
74 * of the current error. */
75 virtual const char*
76 what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
77 };
78
79 /// @}
80
81} // namespace std
82
83}
84
85#pragma GCC visibility pop
86
87#endif
88

source code of include/c++/11/bits/exception.h