Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!unido!alfrat!roy
From: roy@alfrat.uucp (Roy Phillips)
Newsgroups: comp.lang.eiffel
Subject: Re: Good problems
Message-ID: <104@alfrat.uucp>
Date: 10 Aug 90 18:38:13 GMT
References: <3953@ifi.informatik.uni-stuttgart.de>
Reply-To: roy@alfrat.UUCP (Roy Phillips)
Organization: A+F System-Entwicklung, W-Germany
Lines: 32

With reference to your problem #5: GOOD segmentation violation

This problem is not an unknown phenomenon to me, below is a list of
three things worth checking:

1. Wrong paths in your environment - if older versions of Eiffel are
present, this can cause seg. viol.

2. Clusters/Classes of a previous version of Eiffel referenced in the
local '.eiffel' file (UNIVERSE: ...).

3. Certain crucial portions of an otherwise compiled system left
uncompiled - i've just eiffelclean'd and recompiled and everything
worked! (GOOD should handle un-compiled systems, but...).

The first thing to try is to create a trivial class containing, for example,
just an INTEGER feature, create the .eiffel with the smallest UNIVERSE, and
run good - this should always work.

Lastly, do you have 2.3 yet? the graphics library is far superior, in my view,
than the previous version - you might  not have to mess around with the C
interface (urrgh!) at all, unless you're into serious 3D animation applications.

Tschuss! 
Roy

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