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From: schung@cory.Berkeley.EDU.UUCP
Newsgroups: comp.unix.questions
Subject: Re: csh core dump  (was: if-then-else in csh alias?)
Message-ID: <3565@zen.berkeley.edu>
Date: Wed, 2-Sep-87 18:06:32 EDT
Article-I.D.: zen.3565
Posted: Wed Sep  2 18:06:32 1987
Date-Received: Fri, 4-Sep-87 03:26:19 EDT
References: <16128@teknowledge-vaxc.ARPA> <1376@bloom-beacon.MIT.EDU> <2133@umn-cs.UUCP> <1454@epimass.EPI.COM> <183@intelisc.UUCP>
Sender: news@zen.berkeley.edu
Reply-To: schung@cory.Berkeley.EDU.UUCP (Stephen the Greatest)
Organization: University of California, Berkeley
Lines: 20
Keywords: csh core dump


Csh bomber:

mkdir x x/y
set home = x/y
cd x/y
cd ../..
*** BOOM! ***
core dumped

I also tried it on a VAX 750, 8650 and 785 running 4.2, 4.3 BSD, and Ultrix.
They *ALL* died.  Well, UNIX is portable is that sense..... :-)

I guess the thing is that, when you say cd ../.., $home cannot go that
far, and the pointer runs off the head of the string 'x/y'.  (First ..,
go to 'x' and next .., where? Oops!)

I hope you guys keep posting interesting things like this..... (:->

- Stephen