Date: Wed, 19 Apr 2000 09:46:22 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Litmus Dragon <litmusdragon AT mailcity DOT com>
cc: djgpp AT delorie DOT com
Subject: Re: Couple of problems using DJGPP/Allegro
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On Tue, 18 Apr 2000, Litmus Dragon wrote:

> The first is with a program that I've made called Dragon Engine.  It's both 
> a role playing game engine and an editor.  About three months ago I added a 
> VERY large set of arrays to the program (defined as int 
> roomtile[5000][13][13], int roomtile[5000][13][13], and some more).  The 
> program compiled and ran fine, everything seemed to be ok, but soon I saw 
> that variables were not holding their values.  Variables which were NOT 
> zero, were returning 0 as their value.  Memory seemed to have been 
> corrupted.

If these arrays and other variables are automatic (i.e. declared
inside some function), it's possible you are overflowing the run-time
stack.  DJGPP programs have by default a 512KB stack (the large arrays
above are 4 times that many bytes), but that can be enlarged using the
STUBEDIT utility.

See section 15.9 of the DJGPP FAQ list for more details about this.