Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!henry
From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: net.lang.c
Subject: Re: pcc compiler error
Message-ID: <5127@utzoo.UUCP>
Date: Wed, 27-Feb-85 13:38:43 EST
Article-I.D.: utzoo.5127
Posted: Wed Feb 27 13:38:43 1985
Date-Received: Wed, 27-Feb-85 13:38:43 EST
References: <8494@brl-tgr.ARPA>
Organization: U of Toronto Zoology
Lines: 17

> It seems to me that the code is legal C (though not necessarily
> all that meaningful).  Since C now allows structures to be passed
> as parameters, it appears inconsistent to allow something like
> "foo(*p)" but not "if(*p)".
> 
> Since the code is legal, lint has no reason to complain.  The
> error message you received indicated that the back end of your
> compiler was not able to generate code.  There are C compilers
> that will compile this program.

Sorry, the code is not legal.  Passing a struct as a parameter is
basically struct assignment, which is in modern C.  Giving a struct
to an if is struct comparison (against 0), which is not and has never
been part of C.  (It's not in the current ANSI C draft either.)
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!henry