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From: neville@ads.arpa
Newsgroups: comp.lang.c
Subject: Re: cpp macro expansion
Message-ID: <6987@brl-adm.ARPA>
Date: Mon, 20-Apr-87 19:28:54 EST
Article-I.D.: brl-adm.6987
Posted: Mon Apr 20 19:28:54 1987
Date-Received: Tue, 21-Apr-87 04:05:56 EST
Sender: news@brl-adm.ARPA
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There is a potentially non-portable preprocessor feature that most of
the GLUE(a,b) macros that have been suggested suffer from.

Most such macros that people use look like
 	#define PASTE_IT(left,right)  left/**/right

What some people may not realize is that comments are sort of "doubly-
defined" in that they are defined as part of the C language itself,
but most C preprocessors go ahead and strip comments themselves.  There
is no reason that i can see to expect that all preprocessors will do
this.  If a C comment gets passed through to the *compiler*, what
happens.  You just can't count on hacks like this.

							-neville