VTTs, yet again

[Mark Mitchell]

>>>>> "Jim" == Jim Dehnert <dehnert at baalbek.engr.sgi.com> writes:

    >> From: Mark Mitchell <mark at codesourcery.com>
    >> 
    >> The description of the VTT (in VTT order) doesn't specify which
    >> vptrs point into the main vtable group and which into
    >> construction vtable groups.  It should.

    Jim> I don't think it needs to.  The VTT is the interface, and we
    Jim> describe how it is used.  You are free to make a construction
    Jim> vtable for every subobject if you like -- it will just be
    Jim> often suboptimal.

Fair enough.  

But, I think we should add the rule I gave in a non-normative note;
it's good to have concrete suggestions for implementors.

Thanks,

--
Mark Mitchell                   mark at codesourcery.com
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