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1 // Exception Handling support header for -*- C++ -*-
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2
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131
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3 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
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4 //
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5 // This file is part of GCC.
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6 //
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7 // GCC is free software; you can redistribute it and/or modify
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8 // it under the terms of the GNU General Public License as published by
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9 // the Free Software Foundation; either version 3, or (at your option)
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10 // any later version.
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11 //
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12 // GCC is distributed in the hope that it will be useful,
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13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 // GNU General Public License for more details.
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16 //
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17 // Under Section 7 of GPL version 3, you are granted additional
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18 // permissions described in the GCC Runtime Library Exception, version
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19 // 3.1, as published by the Free Software Foundation.
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20
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21 // You should have received a copy of the GNU General Public License and
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22 // a copy of the GCC Runtime Library Exception along with this program;
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23 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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24 // <http://www.gnu.org/licenses/>.
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25
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26 /** @file bits/exception.h
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27 * This is an internal header file, included by other library headers.
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28 * Do not attempt to use it directly.
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29 */
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30
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31 #ifndef __EXCEPTION_H
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32 #define __EXCEPTION_H 1
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33
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34 #pragma GCC system_header
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35
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36 #pragma GCC visibility push(default)
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37
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38 #include <bits/c++config.h>
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39
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40 extern "C++" {
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41
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42 namespace std
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43 {
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44 /**
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45 * @defgroup exceptions Exceptions
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46 * @ingroup diagnostics
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47 *
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48 * Classes and functions for reporting errors via exception classes.
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49 * @{
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50 */
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51
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52 /**
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53 * @brief Base class for all library exceptions.
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54 *
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55 * This is the base class for all exceptions thrown by the standard
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56 * library, and by certain language expressions. You are free to derive
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57 * your own %exception classes, or use a different hierarchy, or to
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58 * throw non-class data (e.g., fundamental types).
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59 */
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60 class exception
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61 {
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62 public:
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63 exception() _GLIBCXX_NOTHROW { }
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64 virtual ~exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
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65 #if __cplusplus >= 201103L
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66 exception(const exception&) = default;
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67 exception& operator=(const exception&) = default;
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68 exception(exception&&) = default;
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69 exception& operator=(exception&&) = default;
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70 #endif
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71
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72 /** Returns a C-style character string describing the general cause
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73 * of the current error. */
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74 virtual const char*
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75 what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_NOTHROW;
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76 };
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77
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78 } // namespace std
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79
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80 }
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81
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82 #pragma GCC visibility pop
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83
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84 #endif
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