Tobias Stoeckmann wrote:
> I don't see the need to adjust anything
> except avoiding this special value.  I doubt that anyone ever needed
> these large numbers.

Yes, it's hard to imagine anyone needing a tabsize that large.  Still, the GNU 
policy is to avoid unnecessary limits, so it's better to make the limit as large 
as easily possible, which here would be SIZE_MAX - GUTTER_WIDTH_MINIMUM.  Also, 
I see there are other ways the nearby code can overflow.  Plus, we should put in 
a test case for this bug.  So I installed the attached patch, which should 
address these issues.  Thanks for reporting the problem.