Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!mailrus!cornell!batcomputer!riley
From: riley@batcomputer.tn.cornell.edu (Daniel S. Riley)
Newsgroups: comp.sys.amiga.tech
Subject: Re: divide by 0 problem in "info"?  Also: GOMF
Message-ID: <6165@batcomputer.tn.cornell.edu>
Date: 31 Aug 88 14:52:11 GMT
References: <1841@kalliope.rice.edu>
Reply-To: riley@tcgould.tn.cornell.edu (Daniel S. Riley)
Organization: Cornell Theory Center, Cornell University, Ithaca NY
Lines: 17

In article <1841@kalliope.rice.edu> phil@rice.edu (William LeFebvre) writes:
[...]
>I made VT100 generate my favorite reproducible guru (Kermit
>BYE before doing a transfer), but GOMF didn't catch it.  I was a little
>disappointed.  Does anyone know just what it will catch?

When you kermit BYE in vt100 2.8 before doing a transfer, vt100 constructs
a packet using a pointer which never had memory allocated for it...i.e.
it points to NULL, so Kermit happily scribbles all over low memory.
I think it scribbles over less than 100 bytes, so memwatch might catch it.
Beyond that, you nuke the autovector interrupts and there's not much hope
of getting out intact.

I sent fixes for this (and several other bugs) to Tony, so this should
disappear in 2.9, and you'll have to find a new `favorite guru'.

-dan riley (dsr@lns61.tn.cornell.edu, dsr@crnlns.bitnet)
-wilson lab, cornell u.