Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site brl-vgr.ARPA
Path: utzoo!watmath!clyde!floyd!harpo!seismo!brl-vgr!gwyn
From: gwyn@brl-vgr.ARPA (Doug Gwyn )
Newsgroups: net.lang.c
Subject: Re: valid program?
Message-ID: <3319@brl-vgr.ARPA>
Date: Fri, 6-Apr-84 13:52:07 EST
Article-I.D.: brl-vgr.3319
Posted: Fri Apr  6 13:52:07 1984
Date-Received: Sat, 7-Apr-84 06:13:02 EST
References: <162@boulder.UUCP>
Organization: Ballistics Research Lab
Lines: 15

main()
{
	int *i, *j;
	&(*i) = j;
}

Your sample program is not valid since an lvalue is required on the
left side of the assignment.  The Ritchie PDP-11 C compiler gets this
right; PCC does not (as of UNIX System V Release 1).  PCC turns &(*i)
into i and proceeds.

One way of looking at this is:  What i points to, (*i), is some
int somewhere, maybe in another module.  The address of that is the
storage location of that other int.  This has nothing to do with i
itself; it may be a load-time constant that cannot be changed.