Path: utzoo!attcan!uunet!snorkelwacker!apple!mips!sgi!arc@thyme.wpd.sgi.com
From: arc@thyme.wpd.sgi.com (Andrew Cherenson)
Newsgroups: comp.sys.sgi
Subject: Re: Wierd Telnet/Telnetd problem with Irix 3.3.1 and/or Unicos 5.1.10
Keywords: telnet, telnetd, Irix 3.3.1, Unicos 5.1.10, stty
Message-ID: <70642@sgi.sgi.com>
Date: 28 Sep 90 21:22:05 GMT
References: <1882@fcs280s.ncifcrf.gov>
Sender: guest@sgi.sgi.com
Reply-To: arc@sgi.com (Andrew Cherenson)
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 48

In article <1882@fcs280s.ncifcrf.gov> adam@ncifcrf.gov (Adam W. Feigin) writes:
>I just upgraded our Iris 4d machines to Irix 3.3.1, and I've got this
>bizzare bug/interaction with telnet and terminal characteristics, and
>I'm wondering where the problem is, and if anyone has seen this
>behavior before.
>
>From an Iris 4D machine, if I telnet into a Cray (X/MP, Unicos
>5.1.10), my terminal characteristics get all screwed up:
[Stuff deleteted]
>								AWF
>-------------------------------------------------------------------------------
>Internet: adam@ncifcrf.gov			Adam W. Feigin
>UUCP: {backbonz}!ncifcrf!adam		    Senior Systems Manager
>Mail: P.O. Box B, Bldg 430	National Cancer Institute-Superconmputer Center
>      Frederick, MD 21702      Frederick Cancer Research & Development Facility


There's a bug in the UNICOS telnetd. Here's the details:

> From: dab@berserkly.cray.com (David Borman)
> Date: Fri, 28 Sep 90 11:10:50 -0500
> 
> The problem that is being seen with telnetd on Unicos 5.1.10 is due to
> a bug in the generation compiler, /usr/gen/bin/cc.  There are two ways
> to solve this problem:
> 	1) re-build telnetd with either /bin/scc or /bin/cc
> 	   (slc.c is the affected module)
> 	2) get mod e19534tcpa to change telnetd to work around
> 	   the compiler bug.  This is a critical bugfix mod, that
> 	   should be applied to all 5.1.10 sites.  The mod is real
> 	   simple:
> 
> 		*f usr/etc/telnetd/slc.c
> 		*d 518849tcpab.3
> 			register cc_t val;
> 		*d 518849tcpab.8
> 			register cc_t val;
> 		*d 518849tcpab.10
> 			register cc_t val;
> 
> This changes the argument declarations in add_slc(), process_slc()
> and change_slc() from non-register to register.  The bug is that
> if you have a function that takes three character arguments, and
> the first two are declared as register and the third not as a
> register, the value for the third argument will become the same
> as the value for the second argument.
> 
> 			-David Borman, dab@cray.com