GNU bug report logs - #56794
Segmentation fault in purecopy while dumping - stack overflow attempting to copy cyclic Lisp value

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Package: emacs;

Reported by: Lynn Winebarger <owinebar <at> gmail.com>

Date: Wed, 27 Jul 2022 14:08:01 UTC

Severity: normal

Done: Stefan Kangas <stefankangas <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #8 received at 56794 <at> debbugs.gnu.org (full text, mbox):

From: Lynn Winebarger <owinebar <at> gmail.com>
To: 56794 <at> debbugs.gnu.org
Subject: Recompiled with proper debugging flags and found the offending object
Date: Wed, 27 Jul 2022 19:06:28 -0400

The cyclic object is a record with the type field (index 0) set to the
eieio-default-class, which has the cyclic record at index 10.
I don't know if this is a bug in itself or not.  I put a check for
this case in purecopy (splitting off the RECORDP case), printing a
message whenever a record with a non-symbol entry 0 is encountered.
So far it's only this one.
Also, it seems weird this was not an issue for the build with native
compilation enabled.

Lynn
This bug report was last modified 103 days ago.

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