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From: mikes@ingres.com (Mike Schilling)
Newsgroups: comp.lang.c
Subject: Are all structure pointers grey in the dark?
Message-ID: <1991May29.161602.26744@ingres.Ingres.COM>
Date: 29 May 91 16:16:02 GMT
References: <1991May28.115914.19879@email.tuwien.ac.at>
Distribution: comp
Lines: 25

From article <1991May28.115914.19879@email.tuwien.ac.at>, by hp@vmars.tuwien.ac.at (Peter Holzer):
> 
> #pragma speculation_mode on	/* :-) */
> There is a rumor among C-programmers that `all struct-pointers smell
> the same.' (I could not find any assertion of this in the standard, and
> I can find pro's and con's for such a rule, so I call it a rumor,
> undoubtedly someone who knows will tell me if it is correct or not)
Consider the following legal and complete C module:

	sub()
	{
		struct s
		{
			struct t *p;
		}s1;

		s1.p = (struct t *)&s1;
	}

The compiler has to generate a 'struct t' pointer, with no idea of 
'struct t's defintion.
----------------------------------------------------------------------------
mikes@rtech.com = Mike Schilling, ASK Corporation, Alameda, CA
Just machines that make big decisions,
Programmed by fellows with compassion and vision.	-- Donald Fagen, "IGY"