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Date: Sat, 10 Sep 2005 23:22:09 -0500 (CDT)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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Subject: Re: [Tiff] TIFFTAG_DATETIME
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Status:   

On Sat, 10 Sep 2005, Frank Warmerdam wrote:
>
> I made a fix in libtiff a few days ago which related to a double free
> for strings for custom tags.  As an experiment back when I started
> custom tags, I made TIFFTAG_DATETIME get handled through the
> custom mechanism to excercise things.  I suspect this is the bug
> you ran into.
>
> I think it would be a good idea for us to find out when this problem
> was introduced in libtiff, and issue a new release soon with the fix.
> It handle occured to me before that there were any custom tags
> in common use that would make this a major bug.  But now that I
> see this problem cound affect many libtiff users I think we need
> to push out a bug fix release.

The bug does sound pretty important.

Unlike some OSs, Solaris's malloc() runs without any seat belt. 
Memory deallocation errors may cause problems later in program 
operation rather than resulting in an immediate diagnostic.

Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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