GNU bug report logs - #25941
26.0.50; Different code behavior between using the auto-compiled and evaled versions

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From: Vibhav Pant <vibhavp <at> gmail.com>
To: Kaushal Modi <kaushal.modi <at> gmail.com>
Cc: 25941 <at> debbugs.gnu.org, Oleh Krehel <ohwoeowho <at> gmail.com>
Subject: bug#25941: 26.0.50; Different code behavior between using the auto-compiled and evaled versions
Date: Thu, 9 Mar 2017 23:53:29 +0530

[Message part 1 (text/plain, inline)]

On Thu, Mar 9, 2017 at 10:01 PM, Kaushal Modi <kaushal.modi <at> gmail.com> wrote:
> This issue seems to be related to the switch bytecode change.

`cond' returns the value of the met condition when the clause doesn't
have a body. That's what seems to be happening when (eq res 'exit).
The result should be t instead of nil. A similar example like:
(defun test (v)
  (cond ((eq v 1) 'one)
((eq v 2))
(t 'none)))
Also displays different results with (test 2) when byte compiled. I've
added a patch to bytecomp.el which tries to fix this, could you apply
it and see whether the issue still exists?

Thanks,
Vibhav

-- 
Vibhav Pant
vibhavp <at> gmail.com

[condition-only-clause.diff (text/plain, attachment)]

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