[
Note 2:
As a result, storage is not allocated for the prvalue and it is not destroyed
. Thus, a class type is not instantiated
as a result of being the type of a function call in this context
. In this context, the common purpose of
writing the expression is merely to refer to its type
. In particular,
it is not necessary to allocate storage for a temporary object or to enforce the
semantic constraints associated with invoking the type's destructor
. —
end note]