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Date: Thu, 10 Jan 2002 12:41:31 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
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To: ROLAND <roland_asmann AT yahoo DOT com>
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In-reply-to: <20020110101754.95433.qmail@web9104.mail.yahoo.com> (message from
	ROLAND on Thu, 10 Jan 2002 02:17:54 -0800 (PST))
Subject: Re: Problem with alarm & signal (was PMCOM)
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> Date: Thu, 10 Jan 2002 02:17:54 -0800 (PST)
> From: ROLAND <roland_asmann AT yahoo DOT com>
> 
> I now found that the problem is not with PMCOM, but
> somewhere in alarm() and signal().
> When I make the calls to alarm() a comment, my program
> runs and runs and runs! But when I try to stop it by
> pressing CTRL-C, I get the same error as before (Not
> being able to access 0xffffffff)...

`alarm' hooks the timer interrupt, so it sounds like PMCOM's interrupt
handler is not signal-safe or perhaps the implementation of `alarm'
is not safe when other hardware interrupts are present.

Does the Windows message cite any address, and if it does, can you
see (e.g., with a debugger) where in the code is that address?

Alternatively, you could avoid using `alarm'.  What do you use it for
in that program?