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From: eyal@echo.canberra.edu.au (Eyal Lebedinsky)
Newsgroups: comp.std.c
Subject: 'sizeof' in preprocessing.
Keywords: incomplete type, size, sizeof, preprocessor
Message-ID: <1990Oct6.092032.345@csc.canberra.edu.au>
Date: 6 Oct 90 09:20:32 GMT
References: <12672@ogicse.ogi.edu>
Sender: news@csc.canberra.edu.au
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In article <12672@ogicse.ogi.edu> daniels@ogicse.ogi.edu (Scott David Daniels) writes:
[...]
>point that the committee's position is on a very slippery slope.  Since 
>sizeof cannot be used to control preprocessing, I don't see where any 
Reading the standard, any 'constant-expression' is valid for #if, and sizeof
is yielding a constant. So, one should be able to say:
#if sizeof (a) == 2
etc. I read it a while ago and though it too bad my compiler won't do this.
No separate cpp will do it (unless it learns some C).
Comments? I was reading 3.8.1 7/88 draft.


-- 
Regards
	Eyal