More on Ptr types

By the way, you lot are aware that under the old ANSI C standard at least, pointer types can have different sizes depending on the type? Thus a pointer to a properly-aligned 64-bit entity needs 3 less bits than one to an 8-bit entity, and implementations are entitled to use this. The only guarantee I can remember is that (void *) is big enough to represent everything. Does this affect things at all?