Sender: rich AT phekda DOT freeserve DOT co DOT uk
Message-ID: <3EECB249.5A956673@phekda.freeserve.co.uk>
Date: Sun, 15 Jun 2003 18:52:09 +0100
From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
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To: djgpp AT delorie DOT com
Subject: Re: mprotect() under Windows
References: <22ec01c331a0$4a9a2410$0600000a AT broadpark DOT no>
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Hello.

Gisle Vanem wrote:
> 
> Is mprotect() (in djgpp 2.03) supposed to have any effect under Win-XP?
> I guess not since function 0x0507 is a DPMI 1.0 function.
> 
> But I find that __dpmi_set_page_attributes() doesn't return -1.
> This small test program *doesn't* crash. Anybody see why?
[snip]

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.

Bye, Rich =]

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]