GNU bug report logs - #12077
Abort in replace-regexp with an after-change-functions hook

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Glenn Morris <rgm <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#12077: closed (Abort in replace-regexp with an
 after-change-functions hook)
Date: Tue, 19 Feb 2013 17:10:01 +0000

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Your message dated Tue, 19 Feb 2013 12:08:34 -0500
with message-id <0cbobgut7x.fsf <at> fencepost.gnu.org>
and subject line Re: bug#12077: Abort in replace-regexp with an after-change-functions hook
has caused the debbugs.gnu.org bug report #12077,
regarding Abort in replace-regexp with an after-change-functions hook
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
12077: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=12077
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Contact help-debbugs <at> gnu.org with problems

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From: Rob Browning <rlb <at> defaultvalue.org>
To: bug-gnu-emacs <at> gnu.org
Cc: 682995-forwarded <at> bugs.debian.org,
	Christopher Wellons <mosquitopsu <at> gmail.com>, 682995 <at> bugs.debian.org
Subject: Abort in replace-regexp with an after-change-functions hook
Date: Sat, 28 Jul 2012 12:53:33 -0500

(If possible, please preserve the 682995-forwarded address in any replies.)

The following bug report was recently filed, and I've tried the example,
and saw the same abort.

You can find additional information here:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=682995


Christopher Wellons <mosquitopsu <at> gmail.com> writes:

> Package: emacs24
> Version: 24.1+1-4
> Severity: normal
>
> When this expression is evaluated, Emacs will abort.
>
>     (with-temp-buffer
>       (insert "#\n*\n")
>       (goto-char (point-min))
>       (add-hook 'after-change-functions
>                 (lambda (a b c) (re-search-forward "\n" nil t)))
>       (replace-regexp "^\\*" " *"))
>
> It is also provided in an attached file, example.el, in order to make
> this easier to demonstrate.
>
>     emacs -q -l example.el
>
> The abort() occurs in the check at the beginning of
> buf_charpos_to_bytepos() in marker.c, because the point has left the
> buffer bounds. I ran into this bug while trying to perform this
> replace-regexp while in a third-party markdown-mode, and narrowed it
> down to this combination of events.
>
> This bug also appears in emacs23 in both squeeze and sid as well as
> upstream and non-Debian builds of Emacs.

Thanks
-- 
Rob Browning
rlb @defaultvalue.org and @debian.org
GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4

[Message part 3 (message/rfc822, inline)]

From: Glenn Morris <rgm <at> gnu.org>
To: 12077-done <at> debbugs.gnu.org,
Subject: Re: bug#12077: Abort in replace-regexp with an after-change-functions
	hook
Date: Tue, 19 Feb 2013 12:08:34 -0500

Version: 24.4

Rob Browning wrote:

>> When this expression is evaluated, Emacs will abort.
>>
>>     (with-temp-buffer
>>       (insert "#\n*\n")
>>       (goto-char (point-min))
>>       (add-hook 'after-change-functions
>>                 (lambda (a b c) (re-search-forward "\n" nil t)))
>>       (replace-regexp "^\\*" " *"))

By experiment, this issue is present in at least 22.3 through 24.2.93,
but is fixed in the current trunk.

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