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From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.lang.c
Subject: Re: Does ANSI C have lengthof() ?
Message-ID: <663@sugar.UUCP>
Date: Sun, 6-Sep-87 13:45:26 EDT
Article-I.D.: sugar.663
Posted: Sun Sep  6 13:45:26 1987
Date-Received: Wed, 9-Sep-87 05:45:44 EDT
References: <9154@brl-adm.ARPA> <1265@mhres.mh.nl> <1059@haddock.ISC.COM>
Organization: Sugar Land UNIX - Houston, TX
Lines: 23

>                                   In particular, couldn't one write a cpp that
> recognizes "typedef" declarations?  Such a preprocessor ought to be able to
> handle any "sizeof(TYPE)" expression, and I'd be willing to do without
> "sizeof(EXPR)".

It would also have to recognise structures.

typedef struct {
	something humungous with all sorts of
	arrays, pointers, enums, bit feilds, and
	unions
} zot;

#if sizeof(zot) > BUFSIZ
#define BUFFERSIZE sizeof(zot)
#else
#define BUFFERSIZE BUFSIZ
#endif

I can't see how cpp could do that without learning most of 'C'.
-- 
-- Peter da Silva `-_-' ...!seismo!soma!uhnix1!sugar!peter
--                 'U`  <-- Public domain wolf.