Issue B1: Vptr (was Let's move on)

[Jason Merrill]

Christophe de Dinechin <ddd at cup.hp.com> writes:

> Mark Mitchell wrote:
> > 
> > >>>>> "Jim" == Jim Dehnert <dehnert at baalbek.engr.sgi.com> writes:
> > 
> >     Jim> OK.  One thing came up in Christophe's previous mail, though.
> >     Jim> Has anyone else been assuming that the vptr as well as "this"
> >     Jim> would be passed to virtual functions, for whatever reason?
> > 
> > Not I.
> 
> I did not either, but thinking about it, it might be useful for
> virtual base adjustments.

I am strongly opposed to any caller-side overhead.  Furthermore, this
would make the calling convention for non-static member functions
different from that for other functions, which seems like a lose.

Jason