Exceptions
Diagnostics
Collaboration diagram for Exceptions:

## Classes

class | __cxxabiv1::__forced_unwind
class | std::bad_alloc
class | std::experimental::fundamentals_v1::bad_any_cast
class | std::bad_cast
class | std::bad_exception
class | std::bad_function_call
class | std::experimental::fundamentals_v1::bad_optional_access
class | std::bad_typeid
class | std::bad_weak_ptr
class | std::domain_error
class | std::exception
class | std::__unspecified__::exception_ptr
class | std::ios_base::failure
struct | __gnu_cxx::forced_error
class | std::future_error
class | std::invalid_argument
class | std::length_error
class | std::logic_error
class | std::nested_exception
class | std::out_of_range
class | std::overflow_error
class | std::range_error
class | std::regex_error
class | std::runtime_error
class | std::system_error
class | std::underflow_error

## 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
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 69 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 85 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.

Since
  C++11

Referenced by std::make_exception_ptr().

## 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.

Since
  C++11

Deprecated:
  Removed from the C++ standard in C++17

## 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 249 of file exception_ptr.h.

References std::current_exception().

## rethrow_exception()

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

Throw the object pointed to by the exception_ptr.

References std::rethrow_exception().

Referenced by std::rethrow_exception(), and std::nested_exception::rethrow_nested().

## rethrow_if_nested()

template<typename _Ex >

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

inline

Rethrow a nested exception

If `__ex` contains a `std::nested_exception` object, call its `rethrow_nested()` member to rethrow the stored exception.

After catching an exception thrown by a call to `std::throw_with_nested` this function can be used to rethrow the exception that was active when `std::throw_with_nested` was called.

Since
  C++11

Definition at line 208 of file nested_exception.h.

## 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.

Deprecated:
  Removed from the C++ standard in C++17

## 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.

Referenced by std::nested_exception::rethrow_nested().

## throw_with_nested()

template<typename _Tp >

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

inline

Throw an exception that also stores the currently active exception.

If `_Tp` is derived from `std::nested_exception` or is not usable as a base-class, throws a copy of `__t`. Otherwise, throws an object of an implementation-defined type derived from both `_Tp` and `std::nested_exception`, containing a copy of `__t` and the result of `std::current_exception()`.

In other words, throws the argument as a new exception that contains the currently active exception nested within it. This is intended for use in a catch handler to replace the caught exception with a different type, while still preserving the original exception. When the new exception is caught, the nested exception can be rethrown by using `std::rethrow_if_nested`.

This can be used at API boundaries, for example to catch a library's internal exception type and rethrow it nested with a `std::runtime_error`, or vice versa.

Since
  C++11

Definition at line 148 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).’

## unexpected()

void std::unexpected | ( |  | ) |

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

Deprecated:
  Removed from the C++ standard in C++17