Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!apn
From: apn@Apple.COM (Alex Novickis)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: Re: NULL pointer error
Keywords: Null dos error
Message-ID: <43039@apple.Apple.COM>
Date: 16 Jul 90 20:18:49 GMT
References: <2008@bnlux0.bnl.gov> <27092@netnews.upenn.edu>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 24

In article <27092@netnews.upenn.edu> weisen@eniac.seas.upenn.edu.UUCP (Neil Weisenfeld) writes:
>In article <2008@bnlux0.bnl.gov> reilly@bnlux0.bnl.gov (kevin reilly) writes:
>[NULL ptr stuff deleted]
>>I guess the question is: What memory address do I watch when stepping
>>through the program?
>
>If the program is attempting to write to a NULL pointer, you could
>try watching address 0x0000:0x0000 as this is where the "NULL" pointer
>points.
>
>Neil
>
>

try watching DS:0000, thats where the MSC null-pointer-error-checking
routine places some test data to check for this condition. Look through
your startup source files, microsoft distrubutes these!


-- 
Alex P. Novickis, Real Time systems demi-guru.  (W)   408-370-4541
ALINK:alex.n                                    (PAGE)    989-6678
UUCP:{amdahl,claris,pyramid,sun,decwrl,well,ubvax,ames}!apn@apple.com,apn@nonvon
"I think... I think it's in my basement. Let me go upstairs and check"-Escher.