From: "Carolyn Kelly-Pajot" <dehacked72 AT hotmail DOT com>
References: <63m4mh$qjl$1 AT news DOT interlog DOT com>
Subject: Re: Tracking down where GPFs occur .  How? (DJGPP+Allegro)
Date: Tue, 4 Nov 1997 20:01:54 -0500
Lines: 32
Message-ID: <unEieXY68GA.244@upnetnews03>
Newsgroups: comp.os.msdos.djgpp
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
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Gautam N. Lad wrote in message <63m4mh$qjl$1 AT news DOT interlog DOT com>...
>Hi,
>Is there any way to determine where a program is causing a GPF?
>I get all the code like General Protection Fault at eip=(whatever).
>and some other (unknown to me) stuff.
>
>Could this be used to pinpoint where in a program's source (hopefully a .CPP/.C
>or .HPP/.H) it's happening?
>
>Thanks!
>Bye!
>
>-------------------------------------------------------------
>Gautam N. Lad
>-------------------------------------------------------------
>E-Mail: gautam AT interlog DOT com
>Website: http://www.interlog.com/~gautam
>
>POV-Ray Software, Gallery, and Links!
>-------------------------------------------------------------

    Use a debugger. Rhide comes with one build-in. Just make sure the compiler
is run with the -g command. Insert breakpoints, and run the program from the
debugger. If you get an error message, the error is before that. If you see a
blue line wheere your breakpoint is, it means it made it and is waiting to
execute THAT line. There is also a "step over" command which does 1 line at a
time. Rhide can also give a more specific stack pointer (probably because of
debugging). Try re-compiling the ALLEGRO library with debugging to see if that
is the problem. I have had a few problems...