std::experimental::optional<T>:: ~optional

From cppreference.com
~optional ( ) ;
(library fundamentals TS)

If the object contains a value and the type T is not trivially destructible (see std::is_trivially_destructible ), destroys the contained value by calling its destructor, as if by val - > T :: ~T ( ) .

Otherwise, does nothing.

Notes

If T is trivially-destructible, then this destructor is also trivial, so optional<T> is also trivially-destructible.