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: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: cyd <at> stupidchicken.com, 8219 <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: bug#8219: Effect of deletions on indirect buffers (Bug#8219)
Date: Sat, 12 Mar 2011 15:47:05 -0500

> It follows that BUF_PT, when used on other than the current buffer
> should update PT if necessary, if that buffer is an indirect buffer,
> before returning the value.  And the same with BUF_BEGV, BUF_ZV, etc.

> Right?

Yes.  At least that was my conclusion last time we bumped into such
a bug.  I even added a comment in buffer.h about it:

/* !!!FIXME:  all the BUF_BEGV/BUF_ZV/BUF_PT macros are flawed:
   on indirect (or base) buffers, that value is only correct if that buffer
   is the current_buffer, or if the buffer's text hasn't been modified (via
   an indirect buffer) since it was last current.  */


        Stefan
This bug report was last modified 14 years and 71 days ago.

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