Path: news.daimi.aau.dk!not-for-mail
From: Peter Andersen <datpete@mjolner.dk>
Newsgroups: comp.lang.beta
Subject: Re: guienv prob: segmentation fault w/every program
Date: Fri, 11 Apr 1997 12:20:26 +0200 (MET DST)
Organization: DAIMI, Computer Science Dept. at Aarhus University
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Approved: mailtonews@daimi.aau.dk
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Message-ID: <199704111020.MAA08663@mjolner.mjolner.dk>
Reply-To: Peter Andersen <datpete@mjolner.dk>
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Xref: news.daimi.aau.dk comp.lang.beta:11033

ger writes:
> 
> Hello,
> 
> I encounter the following problem with Beta's guienv: I can compile
> every guienv-program (for example TextEditor.bet) without errors, but
> they immediately crash. The following .dump file is generated:
> 
> Beta execution aborted: Segmentation fault.
> 
> Call chain: (linux)
> 
> Current object is zero!
> 
> I use Linux 2.0.25, Mjolner BETA System version 5.2(2) for Linux (Intel
> 386/486/586/Pentium) (elf), guienv v1.4, Metrolink OSF Motif 2.0
> Runtime.
> 
> Any hints?
> 
> -- 
> "Das gab es noch nie: Informatik am Computer!" bhv-Katalog 96/97 S.21
> 
> 

The following has recently been added to the BETA FAQ 
(www.daimi.aau.dk/~beta/FAQ). It seems to cover your problem:

Lx03) Why does GuiEnv demos segmentation fail? [error in r4.0 & r4.0.1]

With some Linux distributions, the demos in $BETALIB/guienv/v1.4/demos
(aka BETALIB/demo/guienv) all fail with a segmentation fault upon
startup, whereas, e.g. the MotifEnv demos all work correct.

The reason for this seems to be a buggy gcc used for producing some of
the files in the BETA releases r4.0 and r4.0.1. This was done at the
time that the Linux community was switching towards ELF binaries, and
possibly this is the reason, that gcc produced wrong files. The
problem has not been observed for release 4.0.2.

A workaround is to do the following (as the owner of BETALIB): 

        cd $BETALIB/guienv/v1.4/private/X11
        chmod -R u+w .
        rm linux/guienv_unix.o
        rm linux/Canvas.o
        rm linux/Button.o
        rm linux/IconButton.o
        rm linux/ToggleButton.o
        beta guienv_unixbody
        chmod -R a-w .



Sincerely,

Peter Andersen, Mjolner Informatics