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2000.03.15 17:44 "Some CCITT Group 3 TIFFs crash libtiff", by Jason Summers
I've encountered several CCITT Group 3-compressed TIFF images that cause
programs compiled with libtiff 3.5.4 to crash with an IPF/segmentation
fault. The crash occurs both in my Windows program and in utilities like
tiffcp on Linux.
The crash occurs in tif_fax3.c, at either line 397:
*lp++ = 0L;
or line 436:
*lp++ = -1L;
The crash does not occur when using libtiff 3.4beta37, even though the
tif_fax3.c file is effectively identical.
I haven't investigated this too deeply, in the hopes that someone may
already know a simple fix. I placed several files that exhibit
the problem at:
http://home.mieweb.com/jason/testbed/tif/
I don't know (or really care) if those files are perfectly valid TIFFs,
I just want to prevent a crash. Any help would be appreciated.
--
Jason Summers
jason@med-web.com http://home.mieweb.com/jason/