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Re: RFA: PATCH to initializer_constant_valid_p for c++/38880

On Fri, 20 Feb 2009, Richard Guenther wrote:

> On Thu, 19 Feb 2009, Jason Merrill wrote:
> 
> > > > And to then wonder why
> > > > POINTER_PLUS_EXPR wasn't used instead of PLUS_EXPR.
> > > 
> > > Because http://gcc.gnu.org/viewcvs?view=rev&revision=143442 made the
> > > compiler stop folding to POINTER_PLUS_EXPR.
> > 
> > Do you two think it would make sense to put back that folding for the case of
> > PTR+small constant?
> 
> I don't see how a small constant makes that folding more correct.

Btw, I think your patch to initializer_constant_valid_p is sound, but
I'll defer to Ian to approve it as he had issues with it.

Thanks,
Richard.
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