GNU bug report logs - #32531
Emacs 27 crash with `memory-use-counts'

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#32531: closed (Emacs 27 crash with `memory-use-counts')
Date: Sun, 26 Aug 2018 14:55:02 +0000

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Your message dated Sun, 26 Aug 2018 17:54:03 +0300
with message-id <83tvnh5gc4.fsf <at> gnu.org>
and subject line Re: bug#32531: Emacs 27 crash with `memory-use-counts'
has caused the debbugs.gnu.org bug report #32531,
regarding Emacs 27 crash with `memory-use-counts'
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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From: Karl Otness <karl <at> karlotness.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Emacs 27 crash with `memory-use-counts'
Date: Sat, 25 Aug 2018 22:50:25 -0500

I've observed a crash with Emacs master (version as of a couple days
ago). To reproduce with "emacs -q" just eval (memory-use-counts) in
scratch. Printing or manipulating the list causes the crash.

The cause seems to that listn is called with a length of 8 rather than
7 in the source of memory-use-counts (alloc.c line 7020) when only
seven elements are specified. Might be leftover from getting rid of
misc. Bumping that number down to 7 fixed the crash for me.

I didn't attach a patch since it's a one-line change, but if it would
be easier for me to put one together I'd be happy to come back with
one.

Thanks,
Karl

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Karl Otness <karl <at> karlotness.com>
Cc: 32531-done <at> debbugs.gnu.org
Subject: Re: bug#32531: Emacs 27 crash with `memory-use-counts'
Date: Sun, 26 Aug 2018 17:54:03 +0300

> From: Karl Otness <karl <at> karlotness.com>
> Date: Sat, 25 Aug 2018 22:50:25 -0500
> 
> I've observed a crash with Emacs master (version as of a couple days
> ago). To reproduce with "emacs -q" just eval (memory-use-counts) in
> scratch. Printing or manipulating the list causes the crash.
> 
> The cause seems to that listn is called with a length of 8 rather than
> 7 in the source of memory-use-counts (alloc.c line 7020) when only
> seven elements are specified. Might be leftover from getting rid of
> misc. Bumping that number down to 7 fixed the crash for me.

Thanks, fixed.

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