Hi,
suppose I have three classes Foo, Bar, Zoo.
Foo inherits from Bar,
Bar inherits from Zoo.
Bar and Zoo are abstract classes (as defined here :
http://en.wikibooks.org/wiki/C%2B%2B_Programming/Classes/Abstract_Classes)
The size of Foo shall account for the two pointers to Bar an Zoo vtables.
I was wondering if there is a way to have the Zoo vtable reference
pointer embedded in the Bar vtable, so that Foo only has to store one
pointer, while the second vtable reference is resolved when accessing
the first. I'm aware that there are motivations like casting or multiple
inheritance behind having all vtables pointers attached to the object
instance in "ram" memory, rather then within the vtable "in rom", but I
was wondering if there was a more "ram-efficient" way to handle this (as
the vtables and the way the work is not dictated by the standard), which
gcc could support.
R
