On Fri, 30 Apr 1999, David O'Brien wrote:

> > These are good questions, and I don't know enough yet about the issues
> > surrounding vtable thunks to answer them.  
> 
> I haven't had time to really dig into this yet.  Hopefully Saturday.  I'm
> about to revert the change until I can see what the problem is and what
> the upgrade issues will be.  EGCS 1.2 *should* be out in the July/Aug
> time frame.  Of course I will try to upgrade us to it (well 1.2.1 which I
> figure will quickly follow).  The EGCS maintainers are pushing to get
> vtable thunks working properly for 1.2.
> 
> Since the Linux config files specify DEFALUT_VTABLE_THUNKS=1, no one has
> posted a bug report related to them, there is an option to turn them off,
> and this *is* -CURRENT. I may just leave them turned on by default.
> 
> Opinions?

I would prefer to keep vtable thunks turned on. The alternative produces
wretched code for multiple inheritance. Personally, I want -fnew-abi too;
gcc does some disgusting things with multiple zero-sized base classes
without it...

--
Doug Rabson                             Mail:  d...@nlsystems.com
Nonlinear Systems Ltd.                  Phone: +44 181 442 9037




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