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From: tim@hoptoad.uucp (Tim Maroney)
Newsgroups: comp.sys.mac.programmer
Subject: Re: detecting macsbug
Message-ID: <12555@hoptoad.uucp>
Date: 29 Sep 90 05:38:37 GMT
References: <109400@tiger.oxy.edu> <20759@well.sf.ca.us>
Reply-To: tim@hoptoad.UUCP (Tim Maroney)
Organization: Electronics for Imaging, San Bruno CA
Lines: 16

In article <109400@tiger.oxy.edu> sonenbli@oxy.edu (Andrew D. Sonenblick)
writes:
>>is there a cool way of detecting whether macsbug is installed?

In article <20759@well.sf.ca.us> smoke@well.sf.ca.us (Nicholas Jackiw) writes:
>Can you just check if GetTrapAddress($A9FF)<>GetTrapAddress(UnImplTrapNum)?
>This will, of course, only tell you if -somebody- has installed a debugger,
>not necessarily whether -macsbug- has.  ($A9FF is the _Debug trap.)

If I recall correctly, I tried this once and it didn't work.  MacsBug
takes over the trap dispatcher in order to intercept its two debugger
traps; it doesn't use SetTrapAddress to grab the traps.
-- 
Tim Maroney, Mac Software Consultant, sun!hoptoad!tim, tim@toad.com

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