Path: utzoo!utgpu!water!watmath!clyde!att!alberta!calgary!!radford
From: radford@.ucalgary.ca (Radford Neal)
Newsgroups: comp.arch
Subject: Re: NULL pointers (was: Software Distribution)
Keywords: software distribution, null pointers
Message-ID: <33@cs-spool.calgary.UUCP>
Date: 3 Oct 88 22:27:51 GMT
References: <978@esunix.UUCP> <3112@pt.cs.cmu.edu>
Sender: news@calgary.UUCP
Lines: 18

In article <3112@pt.cs.cmu.edu>, bsy@PLAY.MACH.CS.CMU.EDU (Bennet Yee) writes:

> .....
> blithering about universal intermediate languages and cost for checking
> every pointer reference to enforce *NULL == NULL
> .....
> 
> ... if your machine core dumps on dereferencing NULL, just trap the
> fault ... patch up ... return. It's a very machine dependent solution, 
> but certainly can be done on any Unix machine.

Really? It can't be done on several models of the PDP-11. Models that 
supported UNIX. 

I suspect it can't be done on many UNIX systems that don't support
demand paging. Maybe not even on some that do.

    Radford Neal