GNU bug report logs - #54501
Segfault on recursive structure

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Mattias Engdegård <mattiase <at> acm.org>
Cc: Andy Gaynor <goldipox <at> mail.com>, 54501 <at> debbugs.gnu.org, Andreas Schwab <schwab <at> linux-m68k.org>, Stefan Monnier <monnier <at> iro.umontreal.ca>, Eli Zaretskii <eliz <at> gnu.org>
Subject: bug#54501: Segfault on recursive structure
Date: Sat, 26 Mar 2022 17:33:22 +0100

Mattias Engdegård <mattiase <at> acm.org> writes:

> The patch fixes the #0=#0# nonsense as well since it's a trivial
> check.

Thanks; seems to work perfectly.

Do you think this is safe enough to go on the release branch?

This isn't a regression (Emacs has segfaulted on the #0=[#1=(#0# . #1#)]
as far back as I have Emacs versions), so I'd tend toward thinking it's
not vital enough to install on the release branch, but perhaps Eli has a
different opinion.  Eli?

> Admittedly it doesn't handle #1=#2=#1# -- please keep this bug
> open if you think it's important.

No, I think this fix is sufficient.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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