Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!sun-barr!newstop!sun!pepper!cmcmanis
From: cmcmanis%pepper@Sun.COM (Chuck McManis)
Newsgroups: comp.sys.amiga.tech
Subject: Re: HELP!!! - C bug?
Keywords: HELP C
Message-ID: <114478@sun.Eng.Sun.COM>
Date: 10 Jul 89 06:14:49 GMT
References: <596@lehi3b15.csee.Lehigh.EDU>
Sender: news@sun.Eng.Sun.COM
Reply-To: cmcmanis@sun.UUCP (Chuck McManis)
Organization: Sun Microsystems, Mountain View
Lines: 39

In article <596@lehi3b15.csee.Lehigh.EDU> (William Dimm) writes:
> ... I think I found the line causing the problem (dissasembled by 
> CPR underneath):
>	bytes -= (unsigned int)(op.count - result->ops);

>  The variables being subtracted are pointers of the same type.

Hmmm, What do you hope to gain by subtracting two pointers? Since
you seem to be assigning a variable "bytes" to be some number 
minus this number I get the impression you want the size of something?
Unfortunately, the above statement won't cut it. The other interesting
things that come to light. Why is one of your pointers called "count"
and one of them called "ops" ? Variables named 'count' usually contain
an integer. The code that CPR spit out seems to think one is an integer
as well. 

>		MOVE.L  056A(A4),D0
			* Move the global 32 bit variable at $056A+A4 to D0
>		MOVE.L  D0,D1
			* Copy it into D1
>		MOVEA.L FFF8(A5),A0
			* Move the local Pointer (probably "result" into A0)
>		SUB.L   (A0),D1
			* Subtract result->ops from op.count
>		MOVEQ   #0A,D2
>		DIVS.W  D2,D1
			* Divide the result by 10. This would indicate
			* that sizeof(*(result->ops)) == 10
>		SUB.L   D0,FFAA(A5)
			* Subtract result from "bytes"

Random questions, what are you trying to do? What are the types of 
result->ops and op.count (how about the structures or unions defining
them). Then you can get a real answer.

--Chuck McManis
uucp: {anywhere}!sun!cmcmanis   BIX: cmcmanis  ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.
"A most excellent barbarian ... Genghis Kahn!"