GNU bug report logs - #58739
Lack of error message about number of args (?native compilation?)

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Alan Mackenzie <acm <at> muc.de>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#58739: closed (Lack of error message about number of args
 (?native compilation?))
Date: Sat, 29 Oct 2022 13:33:02 +0000

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Your message dated Sat, 29 Oct 2022 13:32:13 +0000
with message-id <Y10rXRPHALe7Uv/Q <at> ACM>
and subject line Re: bug#58739: Fixed
has caused the debbugs.gnu.org bug report #58739,
regarding Lack of error message about number of args (?native compilation?)
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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58739: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=58739
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From: Alan Mackenzie <acm <at> muc.de>
To: bug-gnu-emacs <at> gnu.org
Subject: Lack of error message about number of args (?native compilation?)
Date: Sun, 23 Oct 2022 12:12:49 +0000

Hello, Emacs.

Firstly, note that the function desktop-buffer has exactly 12
parameters.

With an up to date Emacs 29:

(i) emacs -Q
(ii) M-x load-library RET desktop RET.
(iii) M-x disassemble RET desktop-buffer.

Note that this is native code.

(iv) M-: (desktop-buffer 1 2 3 4 5 6 7 8 9 10 11 12 13) RET

This gives an error message about 4 not being a list.  What it ought to
do is instead throw an error about the number of arguments.  This is a
bug.

(v) M-x load-file RET /path/to/emacs/lisp/desktop.elc.
(vi) M-x disassemble RET desktop-buffer.

Note that we now have byte compiled code.

(vii) M-: (desktop-buffer 1 2 3 4 5 6 7 8 9 10 11 12 13) RET

We now get a correct error message about the numbere of arguments.

As a matter of interest, I noticed this bug while byte-compiling
desktop.el inside Emacs.  It gave a warning message about the number of
parameters to desktop-buffer having changed from 12+ to 12.

Here, I suspect there's a bug in the native compilation of
desktop-buffer.

-- 
Alan Mackenzie (Nuremberg, Germany).

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From: Alan Mackenzie <acm <at> muc.de>
To: 58739-done <at> debbugs.gnu.org
Subject: Re: bug#58739: Fixed
Date: Sat, 29 Oct 2022 13:32:13 +0000

Bug fixed.

-- 
Alan Mackenzie (Nuremberg, Germany).

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