Defined in header <optional>
class bad_optional_access;
(since C++17)

Defines a type of object to be thrown by std::optional::value when accessing an optional object that does not contain a value.

cpp/error/exceptionstd-bad optional access-inheritance-lwg2806.svg

Inheritance diagram.

Member functions

constructs the exception object
(public member function)

Inherited from std::exception

Member functions

destructs the exception object
(virtual public member function of std::exception)
returns an explanatory string
(virtual public member function of std::exception)

© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.