From: "Stefan Viljoen" <Stefan_Viljoen AT excite DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: prog fails when run twice
Date: Sun, 30 Sep 2001 20:11:58 +0200
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Brian Smith <graywolf DOT smith AT virgin DOT net> wrote in message
news:5zKt7.4503$qi DOT 745588 AT news2-win DOT server DOT ntlworld DOT com...
> I have a game prog I have written in C++ and ASM.
> It involves large graphics files and small 'spites like' objects. The
> graphic are constructed in a mem block set up by malloc. All changes
(moves
> etc) are completed here then the whole file is copied to the vidoe memory.
> a 'newly complied' program runs fine but when it is run again, with
> compling, the 'sprite' positions are wrong (out of position).
>

I have ran into this too - check you memory allocations and deallocations.
Somewhere, you should find you forgot to dealloc something or you allocated
something too small, and overran it when you wrote data to it.

At least, that is what I was doing wrong...

Stefan