Re: Widespread bug in "compress" and GIF compressors

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Article #669

#669

From: Cristy
Date: Sat, 19 Dec 1992 08:19

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In article <BzEzAM.3Gv.2@cs.cmu.edu> tgl+@cs.cmu.edu (Tom Lane) writes:
>I've discovered a small bug in the standard Unix compress(1) utility.
>The bug is also present in many derived implementations of LZW compression,
>notably common GIF graphics file writers such as ppmtogif and xv.
>

I posted a message about this bug last year.  I discovered the bug when
I was writing the GIF routines for ImageMagick.  I wondered why 
ImageMagick produced smaller GIF files than ppmtogif...
-- 
cristy@dupont.com

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Message-ID: <1992Dec19.081927.22648@eplrx7.es.duPont.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!yale.edu!jvnc.net!princeton!udel!louie!eplrx7!cristy

References: <BzEzAM.3Gv.2@cs.cmu.edu>

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Newsgroups: comp.sources.bugs
Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!yale.edu!jvnc.net!princeton!udel!louie!eplrx7!cristy
From: cristy@eplrx7.es.duPont.com (Cristy)
Subject: Re: Widespread bug in "compress" and GIF compressors
Message-ID: <1992Dec19.081927.22648@eplrx7.es.duPont.com>
Keywords: LZW, compress, GIF
Organization: DuPont Central Research & Development
References: <BzEzAM.3Gv.2@cs.cmu.edu>
Date: Sat, 19 Dec 1992 08:19:27 GMT
Lines: 11

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