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bug#32485: 27.0.50; Problem with zerop on 32-bit platforms
From: |
Andy Moreton |
Subject: |
bug#32485: 27.0.50; Problem with zerop on 32-bit platforms |
Date: |
Mon, 20 Aug 2018 22:28:00 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1.50 (windows-nt) |
On Mon 20 Aug 2018, Ken Brown wrote:
> 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.
Good to confirm that its the same underlying problem (but note that an
update on that bug shows further fixes are needed).
> 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.
Agreed. That may need fixing after the semantics of lsh are sorted out.
AndyM