GNU bug report logs - #9389
23.3.50; unencodable-char-position has buffer relocation problem

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From: Kazuhiro Ito <kzhr <at> d1.dion.ne.jp>
To: Kenichi Handa <handa <at> m17n.org>
Cc: 9389 <at> debbugs.gnu.org
Subject: bug#9389: 23.3.50; unencodable-char-position has buffer relocation problem
Date: Thu, 15 Dec 2011 21:30:06 +0900

> > When I start precompiled Windows binary with -Q and evaluate below
> > code, I have unexpected result.
> 
> > (with-temp-buffer
> >   (insert (make-string 16 ?A))
> >   (insert #x80)
> >   (unencodable-char-position 1 18 'ctext-unix))
> 
> > -> 13 (Emacs 23.1)
> > -> 5  (Emacs 23.3)
> 
> > If I evaluate it twice, it returns expected result (17).
> 
> > I think the cause of the problem is similar to bug#9318.
> > unencodable-char-position uses char_charset(), which could cause a
> > relocation of buffes.  After using it, pointers must be updated as
> > needed.
> 
> You are right.  I've just installed the attached patch
> (which is a little bit different from yours).

I confirmed the problem was fixed.  Thank you.

-- 
Kazuhiro Ito

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