2005.09.10 23:55 "Re: [Tiff] TIFFTAG_DATETIME", by Frank Warmerdam

On 9/10/05, Bob Friesenhahn <bfriesen@simple.dallas.tx.us> wrote:

A GraphicsMagick user was complaining that sometimes there was a crash after this tag was read. This is when using libtiff 3.7.3. 64-bit Solaris 10 SPARC was mentioned, but I think the user reported failures on a different system as well.

Bob,

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.

Best regards,
--

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