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From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: "Mattias Engdegård" <mattias.engdegard@gmail.com>
Cc: martin rudalics <rudalics@gmx.at>, Eli Zaretskii <eliz@gnu.org>,
	65726@debbugs.gnu.org
Subject: bug#65726: 29.1.50; Crash in regexp engine
Date: Sat, 16 Sep 2023 11:48:02 -0400	[thread overview]
Message-ID: <jwvzg1mrujt.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <65105BCA-1884-4673-A8F8-03E3C7ABAAEA@gmail.com> ("Mattias Engdegård"'s message of "Sat, 16 Sep 2023 12:49:58 +0200")

> I think you are right, but wouldn't mind seeing it confirmed
> empirically. Say, by cross-checking using an an alternative (slower)
> implementation that directly checks whether a node has been visited before.

I'm reworking my code so it takes 2 arguments: the loop-entry and the
loop-exit.  Any jump outside of those bounds should never happen so we
can assert it to check that our assumptions are right (and we can
return false when we don't compile assertions, so it's never over-optimistic).


        Stefan






  reply	other threads:[~2023-09-16 15:48 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-04  7:46 bug#65726: 29.1.50; Crash in regexp engine martin rudalics
2023-09-04  8:44 ` Mattias Engdegård
2023-09-04 12:12   ` Eli Zaretskii
2023-09-04 13:18     ` Mattias Engdegård
2023-09-04 13:26       ` Mattias Engdegård
2023-09-04 13:28       ` Eli Zaretskii
2023-09-04 15:47         ` Mattias Engdegård
2023-09-05 12:23           ` Mattias Engdegård
2023-09-05 13:08             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-05 13:50               ` Mattias Engdegård
2023-09-05 15:33                 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-06 12:03                   ` Mattias Engdegård
2023-09-09 15:55                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-09 16:34                       ` Mattias Engdegård
2023-09-14 14:41                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-15 20:03                           ` Mattias Engdegård
2023-09-15 22:20                             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-16  3:45                           ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-16 10:49                             ` Mattias Engdegård
2023-09-16 15:48                               ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2023-09-18  2:14                                 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-18  3:59                                   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-18 12:32                                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-21 17:23                                       ` Mattias Engdegård
2023-09-21 18:08                                         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-23 11:56                                           ` Mattias Engdegård
2023-09-04 14:32 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-04 15:57   ` Eli Zaretskii
2023-09-04 17:12     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-10  7:50       ` Stefan Kangas
2023-09-10  7:55         ` Eli Zaretskii
2023-09-10 23:09           ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-09-11 14:46             ` Stefan Kangas
2023-09-05  7:14   ` martin rudalics
2023-09-11  8:10 ` Mattias Engdegård
2023-09-11 13:41   ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors

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