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From: Doug Gwyn (VLD/VMB) 
Newsgroups: net.lang.c
Subject: Re:  NULL pointers
Message-ID: <8174@brl-tgr.ARPA>
Date: Sat, 9-Feb-85 19:24:04 EST
Article-I.D.: brl-tgr.8174
Posted: Sat Feb  9 19:24:04 1985
Date-Received: Mon, 11-Feb-85 05:37:58 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
Lines: 3

The current PDP-11 UNIX C system reserves Data location 0 in the run-
time startoff module (*crt0.o), thereby guaranteeing that no compiled
data will be linked at address 0.