bug#32485: 27.0.50; Problem with zerop on 32-bit platforms

[Ken Brown]

On 8/20/2018 2:46 PM, Andy Moreton wrote:
> On Mon 20 Aug 2018, Ken Brown wrote:
>
> > Evaluating (zerop (lsh -1 32)) on 32-bit Cygwin yields
> >
> > Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p
> > -4294967296)
> >
> > I realize that the fate of lsh is still being debated, but I think
> > there's a problem with zerop anyway, because directly evaluating (zerop
> > -4294967296) leads to the same error.
>
> Could this be bug#32477 ? Please try the patch I posted in:
> http://lists.gnu.org/archive/html/bug-gnu-emacs/2018-08/msg00467.html

Yes, that does fix the error.  Thanks.

But let's leave the bug open, because vc-hg-state-fast might still need 
attention.  Currently (zerop (lsh -1 32)) returns nil on all platforms, 
so it's useless; but that might change.

Ken