GNU bug report logs - #8219
23.3; Crash in indirect buffer

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Package: emacs;

Reported by: Chong Yidong <cyd <at> stupidchicken.com>

Date: Thu, 10 Mar 2011 20:25:02 UTC

Severity: normal

Merged with 1242

Found in version 23.3

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

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From: Chong Yidong <cyd <at> stupidchicken.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 8219 <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: bug#8219: Effect of deletions on indirect buffers (Bug#8219)
Date: Fri, 11 Mar 2011 15:58:57 -0500

Eli Zaretskii <eliz <at> gnu.org> writes:

>> Hence, in the aftermath of a deletion, buffer B's values of PT (and
>> BUF_BEGV and BUF_ZV) can be larger than BUF_ZV.
>
> Isn't that a bug, right there?  Why doesn't del_range_2 update the
> indirect buffer (B) as well, when deletion removes text so that its PT
> becomes invalid?

This is not currently easy.  We don't keep track of indirect buffers
(looping over the buffer list each time we do a deletion would be rather
inefficient), so this would need some new members of the buffer struct.
This bug report was last modified 14 years and 71 days ago.

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