From jan@swi.psy.uva.nl Fri Dec 21 09:26:49 2001
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Date: Fri, 21 Dec 2001 09:26:47 +0100
Message-Id: <200112210826.fBL8Qlv28439@gollem.swi.psy.uva.nl>
From: Jan Wielemaker <jan@swi.psy.uva.nl>
Subject: Re: [SWIPL] Question regarding error message
To: Roger Levy <rog@Stanford.EDU>, <prolog@swi.psy.uva.nl>
In-Reply-To: Roger Levy's message of Thu, 20 Dec 2001 15:57:04 -0800 (PST)
Phone: +31 - 20 - 525 6121

> Hi,
> 
> I just received the following error message from an SWI interactive run:
> 
> [PROLOG SYSTEM ERROR:
> 	Recursively received fatal signal 11
> 
> PROLOG STACK:
>         <snip>
> 
> The most recent goal was a retract/1.
> 
> Out of curiosity, what does this error mean?

It means you've had a crash.  Signal 11 is `segmentation-fault'
(general protectiong fault in Windows speak).  Normally it tries
to map this into a Prolog exception.  If, while trying to recover,
it gets a second one it generates a system error saying: ``I'm lost''.

If it can be reproduced and you are running a recent release, please
submit the program in a bug-report.

	--- Jan

