1 // Exception Handling support header for -*- C++ -*-
3 // Copyright (C) 1995-2017 Free Software Foundation, Inc.
5 // This file is part of GCC.
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)
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.
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.
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/>.
27 * This is a Standard C++ Library header.
33 #pragma GCC system_header
35 #pragma GCC visibility push(default)
37 #include <bits/c++config.h>
38 #include <bits/exception.h>
44 /** If an %exception is thrown which is not listed in a function's
45 * %exception specification, one of these may be thrown. */
46 class bad_exception : public exception
49 bad_exception() _GLIBCXX_USE_NOEXCEPT { }
51 // This declaration is not useless:
52 // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
53 virtual ~bad_exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT;
55 // See comment in eh_exception.cc.
57 what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT;
60 /// If you write a replacement %terminate handler, it must be of this type.
61 typedef void (*terminate_handler) ();
63 /// If you write a replacement %unexpected handler, it must be of this type.
64 typedef void (*unexpected_handler) ();
66 /// Takes a new handler function as an argument, returns the old function.
67 terminate_handler set_terminate(terminate_handler) _GLIBCXX_USE_NOEXCEPT;
69 #if __cplusplus >= 201103L
70 /// Return the current terminate handler.
71 terminate_handler get_terminate() noexcept;
74 /** The runtime will call this function if %exception handling must be
75 * abandoned for any reason. It can also be called by the user. */
76 void terminate() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__));
78 /// Takes a new handler function as an argument, returns the old function.
79 unexpected_handler set_unexpected(unexpected_handler) _GLIBCXX_USE_NOEXCEPT;
81 #if __cplusplus >= 201103L
82 /// Return the current unexpected handler.
83 unexpected_handler get_unexpected() noexcept;
86 /** The runtime will call this function if an %exception is thrown which
87 * violates the function's %exception specification. */
88 void unexpected() __attribute__ ((__noreturn__));
90 /** [18.6.4]/1: 'Returns true after completing evaluation of a
91 * throw-expression until either completing initialization of the
92 * exception-declaration in the matching handler or entering @c unexpected()
93 * due to the throw; or after entering @c terminate() for any reason
94 * other than an explicit call to @c terminate(). [Note: This includes
95 * stack unwinding [15.2]. end note]'
97 * 2: 'When @c uncaught_exception() is true, throwing an
98 * %exception can result in a call of @c terminate()
101 bool uncaught_exception() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__));
103 #if __cplusplus > 201402L || !defined(__STRICT_ANSI__) // c++1z or gnu++98
104 #define __cpp_lib_uncaught_exceptions 201411
105 /// The number of uncaught exceptions.
106 int uncaught_exceptions() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__));
109 // @} group exceptions
114 _GLIBCXX_BEGIN_NAMESPACE_VERSION
117 * @brief A replacement for the standard terminate_handler which
118 * prints more information about the terminating exception (if any)
121 * @ingroup exceptions
125 * std::set_terminate(__gnu_cxx::__verbose_terminate_handler)
127 * to use. For more info, see
128 * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html
130 * In 3.4 and later, this is on by default.
132 void __verbose_terminate_handler();
134 _GLIBCXX_END_NAMESPACE_VERSION
139 #pragma GCC visibility pop
141 #if (__cplusplus >= 201103L)
142 #include <bits/exception_ptr.h>
143 #include <bits/nested_exception.h>