Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!apple!keith
From: keith@Apple.COM (Keith Rollin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Another MPW C 3.2final bug.
Message-ID: <54265@apple.Apple.COM>
Date: 24 Jun 91 03:13:41 GMT
References: <1991Jun21.163520.22236@techbook.com>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 38

In article <1991Jun21.163520.22236@techbook.com> larryh@techbook.com (Larry Hutchinson) writes:
>
>
>Following is the text of yet another bug report for MPW C 3.2 final.
>I have decided that 3.2f is too buggy to use and am reverting to
>the less buggy 3.2b6.  Gack!
>
>
>***********************************
>
>
>The following code:
>
>#define CLOSE_DELTA 5
>int AbsInt(int);
>
>static int
>IsClose(Point p1,Point p2)
>{
>	return !( (AbsInt(p1.h-p2.h) > CLOSE_DELTA) |
>			(AbsInt(p1.v-p2.v) > CLOSE_DELTA) );
>}
>
>Produces the following incorrect code.
>
	[ buggy object code delete ]


If you use a logical or (||) instead of bitwise (|), it
seems to generate correct code.


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Keith Rollin  ---  Apple Computer, Inc. 
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"But where the senses fail us, reason must step in."  - Galileo