Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!husc6!endor!olson
From: olson@endor.harvard.edu (Eric K. Olson)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Quickdraw Bug
Message-ID: <4899@husc6.harvard.edu>
Date: 6 Jul 88 18:14:22 GMT
References: <3174@polya.Stanford.EDU>
Sender: news@husc6.harvard.edu
Reply-To: olson@endor.UUCP (Eric K. Olson)
Organization: Lexington Software Design, Lexington, MA
Lines: 14

In a recent article Marc T. Kaufman writes:
>FYI: I have uncovered a bug in Quickdraw that can trash memory.
>Environment:  8-bit pixel, rowbytes > 4000 (e.g. 6000).  Draw a line from

I believe that rowBytes must be less than 4096, and that the high-order
bits are used as flags.

-Eric


          Lexington Software Design:  Tomorrow's Software Yesterday

Eric K. Olson     olson@endor.harvard.edu     harvard!endor!olson     D0760
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