GNU bug report logs - #68668
30.0.50; Invalid hash table test: tab-bar--auto-width-hash-test

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Package: emacs;

Reported by: No Wayman <iarchivedmywholelife <at> gmail.com>

Date: Tue, 23 Jan 2024 03:46:01 UTC

Severity: normal

Tags: confirmed

Merged with 68821

Fixed in version 30.1

Done: Gerd Möllmann <gerd.moellmann <at> gmail.com>

Bug is archived. No further changes may be made.

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From: Mattias Engdegård <mattias.engdegard <at> gmail.com>
To: Gerd Möllmann <gerd.moellmann <at> gmail.com>
Cc: Mekeor Melire <mekeor <at> posteo.de>, john muhl <jm <at> pub.pink>, 68668 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>, Andrea Corallo <acorallo <at> gnu.org>, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: bug#68668: 30.0.50; Invalid hash table test: tab-bar--auto-width-hash-test
Date: Wed, 31 Jan 2024 14:18:57 +0100

31 jan. 2024 kl. 14.05 skrev Gerd Möllmann <gerd.moellmann <at> gmail.com>:

> why not reuse an existing entry for a given name?

We mustn't violate invariants of existing hash-table objects when the test is redefined. Consider:

(define-hash-table-test 'mytest #'cmp1 #'hash1)
(setq h (make-hash-table :test 'mytest))
...
(define-hash-table-test 'mytest #'cmp2 #'hash2)
; h must still use cmp1 and hash1 at this point
This bug report was last modified 1 year and 172 days ago.

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