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From: drears@ardec.ARPA (FSAC)
Newsgroups: net.lang.c
Subject: absolute pointer
Message-ID: <5009@brl-smoke.ARPA>
Date: Wed, 29-Oct-86 14:20:34 EST
Article-I.D.: brl-smok.5009
Posted: Wed Oct 29 14:20:34 1986
Date-Received: Wed, 29-Oct-86 22:41:56 EST
Sender: news@brl-smoke.ARPA
Lines: 22


     We are running HP-UP UNIX on a Hewlett-Packard System 9050. THe
HP-UP is SYSV look alike with shared memory operations.  I am trying to
compile a program that allows users to talk with each other.  This
program is similiar to talk except that is uses shared memory.  It
compiles and works under a AT&T SYS5 release 2.  However when I compile
it under hp-UNIX I get the following error messages:

rap.c, line 310: warning: absolute pointer used
rap.c, line 369: warning: absolute pointer used

Lines 310 & 369 are the exact same and look like this:

		if ( shmaddr EQ (char *) -1 ) {


   Can anyone shed some light on what is meant by an absolute
pointer.  I am assuming it doesn't like the cast but I am not sure.
Incidently the "EQ" is defined as "==".


Dennis