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Date: Fri, 23 Mar 2007 15:34:38 -0400
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From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
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Subject: Re: protecting program memory
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> I certainly thought code would be protected, but it is not - I have
> just tested it.  What is the reason for that?

DJGPP uses the traditional unix model whereby code and data segments
overlap.  Thus, the one key protection - segment flags - is bypassed.
The second key protection - page tables - depends on your DPMI server
whether it's offered or not.