`<exception>`

Article
12/07/2021

Defines several types and functions related to the handling of exceptions. Exception handling is used in situations in which the system can recover from an error. It provides a means for control to be returned from a function to the program. The objective of incorporating exception handling is to increase the program's robustness while providing a way to recover from an error in an orderly fashion.

Requirements

Header: <exception>

Namespace: std

Members

Typedefs

Name	Description
exception_ptr	A type that describes a pointer to an exception.
terminate_handler	A type that describes a pointer to a function suitable for use as a `terminate_handler`.
unexpected_handler	A type that describes a pointer to a function suitable for use as an `unexpected_handler`.

Functions

Name	Description
current_exception	Obtains a pointer to the current exception.
get_terminate	Obtains the current `terminate_handler` function.
get_unexpected	Obtains the current `unexpected_handler` function.
make_exception_ptr	Creates an `exception_ptr` object that holds a copy of an exception.
rethrow_exception	Throws an exception passed as a parameter.
rethrow_if_nested	Casts and throws exception if nested.
set_terminate	Establishes a new `terminate_handler` to be called at the termination of the program.
set_unexpected	Establishes a new `unexpected_handler` to be when an unexpected exception is encountered.
terminate	Calls a terminate handler.
throw_with_nested	Throws exception if nested.
uncaught_exception	Returns `true` only if a thrown exception is being currently processed.
unexpected	Calls an unexpected handler.

Classes

Name	Description
bad_exception Class	The class describes an exception that can be thrown from an `unexpected_handler`.
exception Class	The class serves as the base class for all exceptions thrown by certain expressions and by the C++ Standard Library.
nested_exception Class	The class describes an exception that can be captured and stored for later use.