Exceptions
Diagnostics
Collaboration diagram for Exceptions:

## Classes

struct | __gnu_cxx::forced_error

## Macros

#define | __cpp_lib_uncaught_exceptions

## Typedefs

typedef void(* | std::terminate_handler) ()
typedef void(* | std::unexpected_handler) ()

## Functions

void | __gnu_cxx::__verbose_terminate_handler ()
exception_ptr | std::current_exception () noexcept
terminate_handler | std::get_terminate () noexcept
unexpected_handler | std::get_unexpected () noexcept
template<typename _Ex >
exception_ptr | std::make_exception_ptr (_Ex __ex) noexcept
void | std::rethrow_exception (exception_ptr)
template<typename _Ex >
void | std::rethrow_if_nested (const _Ex &__ex)
terminate_handler | std::set_terminate (terminate_handler) noexcept
unexpected_handler | std::set_unexpected (unexpected_handler) noexcept
void | std::terminate () noexcept
template<typename _Tp >
void | std::throw_with_nested (_Tp &&__t)
bool | std::uncaught_exception () noexcept
int | std::uncaught_exceptions () noexcept
void | std::unexpected ()

## Detailed Description

Since
  C++98

Classes and functions for reporting errors via exceptions.

## Typedef Documentation

## terminate_handler

typedef void(* std::terminate_handler) ()

If you write a replacement terminate handler, it must be of this type.

Definition at line 68 of file exception.

## unexpected_handler

typedef void(* std::unexpected_handler) ()

If you write a replacement unexpected handler, it must be of this type.

Definition at line 71 of file exception.

## Function Documentation

## __verbose_terminate_handler()

void __gnu_cxx::__verbose_terminate_handler | ( |  | ) |

A replacement for the standard terminate_handler which prints more information about the terminating exception (if any) on stderr.

Call

std::set_terminate(__gnu_cxx::__verbose_terminate_handler)
std::set_terminate
terminate_handler set_terminate(terminate_handler) noexcept
Takes a new handler function as an argument, returns the old function.
__gnu_cxx::__verbose_terminate_handler
void __verbose_terminate_handler()
A replacement for the standard terminate_handler which prints more information about the terminating ...

to use. For more info, see http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html

In 3.4 and later, this is on by default.

## current_exception()

exception_ptr std::current_exception | ( |  | ) |

noexcept

Obtain an exception_ptr to the currently handled exception. If there is none, or the currently handled exception is foreign, return the null value.

## get_terminate()

terminate_handler std::get_terminate | ( |  | ) |

noexcept

Return the current terminate handler.

## get_unexpected()

unexpected_handler std::get_unexpected | ( |  | ) |

noexcept

Return the current unexpected handler.

## make_exception_ptr()

template<typename _Ex >

exception_ptr std::make_exception_ptr | ( | _Ex | __ex | ) |

noexcept

Obtain an exception_ptr pointing to a copy of the supplied object.

Definition at line 233 of file exception_ptr.h.

## rethrow_exception()

void std::rethrow_exception | ( | exception_ptr |  | ) |

Throw the object pointed to by the exception_ptr.

## rethrow_if_nested()

template<typename _Ex >

void std::rethrow_if_nested | ( | const _Ex & | __ex | ) |

inline

If `__ex` is derived from nested_exception, `__ex.rethrow_nested()`.

Definition at line 159 of file nested_exception.h.

References std::__addressof().

## set_terminate()

terminate_handler std::set_terminate | ( | terminate_handler |  | ) |

noexcept

Takes a new handler function as an argument, returns the old function.

## set_unexpected()

unexpected_handler std::set_unexpected | ( | unexpected_handler |  | ) |

noexcept

Takes a new handler function as an argument, returns the old function.

## terminate()

void std::terminate | ( |  | ) |

noexcept

The runtime will call this function if exception handling must be abandoned for any reason. It can also be called by the user.

## throw_with_nested()

template<typename _Tp >

void std::throw_with_nested | ( | _Tp && | __t | ) |

inline

If `__t` is derived from nested_exception, throws `__t`. Else, throws an implementation-defined object derived from both.

Definition at line 118 of file nested_exception.h.

## uncaught_exception()

bool std::uncaught_exception | ( |  | ) |

noexcept

[18.6.4]/1: 'Returns true after completing evaluation of a throw-expression until either completing initialization of the exception-declaration in the matching handler or entering `unexpected()` due to the throw; or after entering `terminate()` for any reason other than an explicit call to `terminate()`. [Note: This includes stack unwinding [15.2]. end note]'

2: 'When `uncaught_exception()` is true, throwing an exception can result in a call of 1terminate()‘ (15.5.1).’

## uncaught_exceptions()

int std::uncaught_exceptions | ( |  | ) |

noexcept

The number of uncaught exceptions.

Since
  C++17, or any non-strict mode, e.g. `-std=gnu++98`

See also
  uncaught_exception()

## unexpected()

void std::unexpected | ( |  | ) |

The runtime will call this function if an exception is thrown which violates the function's exception specification.