The type of a handler function to be called by std::terminate() when terminating exception processing.
Required behavior: A terminate_handler shall terminate execution of the program without returning to the caller.
Effects: Establishes the function designated by f as the current handler function for terminating exception processing.
Remarks: It is unspecified whether a null pointer value designates the default terminate_handler.
Returns: The previous terminate_handler.
terminate_handler get_terminate() noexcept;
Returns: The current terminate_handler. [ Note: This may be a null pointer value. — end note ]
Remarks: Called by the implementation when exception handling must be abandoned for any of several reasons ([except.terminate]), in effect immediately after throwing the exception. May also be called directly by the program.
Effects: Calls the current terminate_handler function. [ Note: A default terminate_handler is always considered a callable handler in this context. — end note ]