[developers] updates in the LOGON tree

Emily M. Bender ebender at uw.edu
Mon Apr 3 20:56:16 CEST 2017

Hi Stephan,

So should we be doing something similar at UW for the builds
we maintain?

cc-ing Brandon Graves, our new sysadmin (who should be subscribing
to `developers' soon).


On Sun, Apr 2, 2017 at 1:52 PM, Stephan Oepen <oe at ifi.uio.no> wrote:

> colleagues,
> i finally migrated the LOGON tree to using Allegro CL 10.0 (from 8.2,
> for the past many years).  in principle, there should be no visible
> changes to users of the run-time images.
> but it appears the new compiler (using the LOGON compiler setting)
> generates faster and less robust code: i have already analyzed one
> previously unnoticed bug, where calling subseq() with a negative start
> index apparently used to quietly return an empty sequence but now
> (correctly) raises an exception.
> in other words, there may after all be unexpected behavior, most
> likely from exposing ‘sleeper’ bugs.  hence, please ‘make update’ your
> LOGON tree (or just get a fresh installation), watch out for suprising
> behavor, and let me (and the LOGON list) know your findings!
> except for dan, i am not aware of LOGON users running from sources
> nowadays.  if you do, once you ‘svn up’ below the optional add-on
> ‘franz/linux.x86.64/’ you will need a fresh ‘devel.lic’ license file
> for Allegro CL version 10.0.
> —part of my motivation for taking this move have been recurrent fatal
> errors (SEGV) over the past several months in the ERG on-line
> demonstrator, which have put a few dents in our previously stellar
> uptime record.  i optimistically hope that these errors will be gone
> now!  come to think of it, they might actually be related to the
> subseq() bug mentioned above ...
> best wishes, oe

Emily M. Bender
Professor and Acting Chair
Department of Linguistics
Check out CLMS on facebook! http://www.facebook.com/uwclma
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