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From: gwyn@BRL.ARPA (VLD/VMB)
Newsgroups: net.lang.c
Subject: Re:  structure references in header files
Message-ID: <547@brl-tgr.ARPA>
Date: Wed, 11-Dec-85 08:28:30 EST
Article-I.D.: brl-tgr.547
Posted: Wed Dec 11 08:28:30 1985
Date-Received: Fri, 13-Dec-85 08:11:01 EST
Sender: news@brl-tgr.ARPA
Lines: 15

The approved way to declare two structs each of which has a
member that is a pointer to the other type of struct, is:

struct a;

struct b {
	struct *a;
	};

struct a {
	struct *b;
	};

Yes, I know it looks unbelievable.  This kludge is present
precisely to handle this kind of problem.