GNU bug report logs - #36769
portable dumper mishandles user-defined hashtabs

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Package: emacs;

Reported by: Paul Eggert <eggert <at> cs.ucla.edu>

Date: Tue, 23 Jul 2019 01:30:02 UTC

Severity: normal

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Emacs bug reports and feature requests <bug-gnu-emacs <at> gnu.org>
Subject: portable dumper mishandles user-defined hashtabs
Date: Mon, 22 Jul 2019 18:29:15 -0700

[Message part 1 (text/plain, inline)]
[I reported this problem on emacs-devel here:
https://lists.gnu.org/r/emacs-devel/2019-07/msg00544.html
and am sending this to bug-gnu-emacs to get a bug number.]


Portable dumping currently can screw up hash tables with user-defined tests. I 
discovered this over the weekend while looking into Pip Cet's proposed changes 
to how portable dumping treats hash tables, and have a contrived test case (see 
attached) that causes gethash to fail with "Lisp nesting exceeds 
‘max-lisp-eval-depth’" in an Emacs started via a portable dump, even though the 
same gethash works fine before dumping.

[trouble.sh (application/x-shellscript, attachment)]
This bug report was last modified 5 years and 299 days ago.

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