From:	ernomat AT evitech DOT fi (Erno Tuomainen)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Debugging with DJGPP
Date:	Sat, 24 Jan 1998 12:18:48 GMT
Organization:	EVITech, Espoo/Finland.
Lines:	35
Message-ID:	<34cbdb2b.766244@news.freenet.hut.fi>
References:	<34c8017e DOT 36688673 AT news DOT freenet DOT hut DOT fi>
NNTP-Posting-Host:	dialin-0-02.evitech.fi
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On Fri, 23 Jan 1998 02:38:18 GMT, ernomat AT evitech DOT fi (Erno Tuomainen)
wrote:

> Could someone help me with DEBUGGING in DJGPP. I recently have
>stumbled into a mysterious bug in my roguelike game (Legend of
>Saladir) which just doesn't seem to disappear even I have tried my
>best, but without debugger to this point.

 Nobody helped out (yet)! So I reply to this post myself.

 I managed to get GDB and debug that slimy bug out. Ooh, I love GDB.

 After I started my game with GDB and played it a while it said that
my game stopped to SIGSEGV (segment violation) at function
Monster_movetotarget(). It even pointed out the particular source line
which caused the error. Yeah, and there it was, when accessing a two
dimensional array I had misplaced the X and Y coordinates .. :) Table
was looked over boundaries and KABOOM.

 Yeah, that answers my question about debugging. This one was really
easy to find.

 I had some problems when GDB couldn't find my *.CPP files, it tried
to load *.CC files always. So I just had to rename the files to *.CC
and it worked.

 And of course it must be compiled with '-g' option so that debugging
does work.


---
Erno Tuomainen -+- A Computer Engineering student at Helsinki/Finland
                +  ernomat AT evitech DOT fi at www.evitech.fi/~ernomat
                +

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