vcall offset question wrt. vtables

[Jason Merrill]

>>>>> Coleen Phillimore <coleen at zko.dec.com> writes:

 >         (add on V3's shared vtable)

 >         vbase offset for V2
 >         ??? vcall offset to i

These are backwards.  The vbase offset is part of the V3 primary vtable,
while the vcall offset for i is only added when V3 is used as a virtual
base.

 > Does this mean V3's vtable does not have the same format as if it
 > weren't virtual derived?

No.  Though it does mean that if we share a vtable with a virtual base, the
vbase and vcall offsets may be interleaved.

Jason