Message-ID: <00be01c33377$da924650$0600000a@broadpark.no>
From: "Gisle Vanem" <giva AT bgnett DOT no>
To: "djgpp" <djgpp AT delorie DOT com>
Subject: Re: mprotect() under Windows
Date: Sun, 15 Jun 2003 21:53:55 +0200
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Reply-To: djgpp AT delorie DOT com

D*mn, the djgpp mailing-list processor doesn't add a "Reply-to"
field. So I'm resending this to the list.
 
 "Richard Dawe" <rich AT phekda DOT freeserve DOT co DOT uk> said:
 
> It seems like __dpmi_set_page_attributes ignores the return code. See
> src/libc/dpmi/d507.S. It doesn't check to see if carry is set on failure and
> clears EAX.
> 
> This smells like a bug to me.

d507.S uses the macro DPMI() which does honour the carry flag
and set EAX = -1 if it was on. See dpmidefs.h.

My guess is that NTVDM silently ignores that function. I tried
the same code under plain DOS with CWSDPMI and DPMI-one.
They both crashed the test-program as they should.

--gv