Mail Archives: djgpp/2002/06/16/12:45:18

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From: CBFalconer <cbfalconer AT yahoo DOT com>
Organization: Ched Research
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Newsgroups: comp.os.msdos.djgpp
Subject: Re: strange content in compiled file
References: <aehvo9$73br1$1 AT ID-43990 DOT news DOT dfncis DOT de> <Xns922F96A66B6F9raf256com AT 213 DOT 180 DOT 128 DOT 20>
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Date: Sun, 16 Jun 2002 16:42:45 GMT
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Rafal 'Raf256' Maj wrote:
> "Christian Görgen" <christiangoergen AT gmx DOT de> wrote in
> > after compiling a simple HelloWorld.c-file with gcc, i found
> > some strange content in the HelloWorld.exe and HelloWorld files.
> > They contained code-sniplets auf websites i visited formerly and
> > also contents of mails, wich are saved in outlook express
> > folders. Anyone who did noticed the same?
> > Or anyone knows what the reason is for that behavior.
> > Unfortunatly i was not able to reproduce this yet.
> yes, this is a bug in MsDos / Windows that don't fill with zero's
> new blocks of memory / diskspace

It is not a bug, but it is a security leak.  *IF* there is any bug
anywhere I would put it in the gcc system, for failing to zero
unused output areas.  Here it is a bug primarily because it
prevents making binary compares of output files.

Chuck F (cbfalconer AT yahoo DOT com) (cbfalconer AT worldnet DOT att DOT net)
   Available for consulting/temporary embedded and systems.
   <>  USE worldnet address!

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