GNU bug report logs - #25847
26.0.50; Error completing help with nil entries in load-history

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Yuri D'Elia <wavexx <at> thregr.org>
To: bug-gnu-emacs <at> gnu.org
Cc: Richard Copley <rcopley <at> gmail.com>
Subject: 26.0.50; Error completing help with nil entries in load-history
Date: Thu, 23 Feb 2017 11:49:11 +0100

This is a regression in emacs 26. How to reproduce:

(defun test () "" nil) ;; insert text in buffer *scratch*
C-M-x ;; eval-defun (adds an entry to load-history with null file)
C-h f package- TAB ;; crashes

This is caused by `help--loaded-p' not handling nil entries, introduced
in 0c31ff43b6880c84498fbe1f06e1e5809b55e838.

Message #10 received at 25847 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Yuri D'Elia <wavexx <at> thregr.org>
Cc: Richard Copley <rcopley <at> gmail.com>, 25847 <at> debbugs.gnu.org
Subject: Re: bug#25847: 26.0.50;
 Error completing help with nil entries in load-history
Date: Fri, 24 Feb 2017 01:51:39 +0100

Yuri D'Elia <wavexx <at> thregr.org> writes:

> This is a regression in emacs 26. How to reproduce:
>
> (defun test () "" nil) ;; insert text in buffer *scratch*
> C-M-x ;; eval-defun (adds an entry to load-history with null file)
> C-h f package- TAB ;; crashes

You mean you get an error - Emacs doesn't crash, right?


Michael.

Message #13 received at 25847 <at> debbugs.gnu.org (full text, mbox):

From: Yuri D'Elia <wavexx <at> thregr.org>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: Richard Copley <rcopley <at> gmail.com>, 25847 <at> debbugs.gnu.org
Subject: Re: bug#25847: 26.0.50;
 Error completing help with nil entries in load-history
Date: Fri, 24 Feb 2017 12:00:10 +0100

On Fri, Feb 24 2017, Michael Heerdegen wrote:
> Yuri D'Elia <wavexx <at> thregr.org> writes:
>
>> This is a regression in emacs 26. How to reproduce:
>>
>> (defun test () "" nil) ;; insert text in buffer *scratch*
>> C-M-x ;; eval-defun (adds an entry to load-history with null file)
>> C-h f package- TAB ;; crashes
>
> You mean you get an error - Emacs doesn't crash, right?

Yes, it's just an error.

Message #18 received at 25847-done <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: 25847-done <at> debbugs.gnu.org
Subject: Re: bug#25847: 26.0.50;
 Error completing help with nil entries in load-history
Date: Wed, 01 Mar 2017 14:37:11 -0500

Version: 26.1

Yuri D'Elia wrote:

> (defun test () "" nil) ;; insert text in buffer *scratch*
> C-M-x ;; eval-defun (adds an entry to load-history with null file)
> C-h f package- TAB ;; crashes

Thanks; fixed in ebb1050.

> This is caused by `help--loaded-p' not handling nil entries, introduced
> in 0c31ff43b6880c84498fbe1f06e1e5809b55e838.

I don't see what that commit has to do with it.

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