No. Well, yes, in that if the type of an object is dynamic, it's possible that certain functions are resolved at runtime usually through a "virtual table". The static type of an object is only known at compile time, and all that the virtual dispatch does is an indirection through the virtual table to the static constructor or destructor as required, and the static special functions always know how to construct, copy, or destroy any subobjects.

So, no, runtime introspection is not needed, but runtime dispatch may be needed.