[PATCH] Fix PR84873

[Jakub Jelinek]

On Fri, Mar 16, 2018 at 12:53:29PM +0100, Richard Biener wrote:
> > An alternative slightly more expensive patch is the following which
> > I'm now testing on x86_64-unknown-linux-gnu, the above testcase
> > is fixed with it (verified with a cross).
> 
> Bootstrapped and tested on x86_64-unknown-linux-gnu, ok?
> 
> > 2018-03-16  Richard Biener  <rguenther@suse.de>
> > 
> >         PR c/84873
> >         * c-gimplify.c (c_gimplify_expr): Revert previous change.  Instead
> >         unshare the possibly folded expression.
> > 
> > +         /* Make sure to unshare the result, tree sharing is invalid
> > +            during gimplification.  */
> > +         *op1_p = unshare_expr (convert (unsigned_type_node, *op1_p));

Ok, thanks.

	Jakub