Xref: utzoo comp.lang.c:37021 alt.sources:3472
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From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Small introspective program
Message-ID: <1991Mar13.164627.20530@zoo.toronto.edu>
Date: Wed, 13 Mar 1991 16:46:27 GMT
References: <1991Mar10.231230.1301@casbah.acns.nwu.edu> <1991Mar12.050929.2870@research.canon.oz.au> <SCOTTH.91Mar12125443@harlie.corp.sgi.com> <1991Mar13.001423.5194@Think.COM>
Organization: U of Toronto Zoology

In article <1991Mar13.001423.5194@Think.COM> dm@think.com (Dave Mankins) writes:
>You start the program (e.g., ``foo.c'') with:
>
>#ifdef notdef
>  cc $0 -g -o `basename $0 .c` -Ineeded-includes -lneeded-libraries 
>  exit;
>#endif notdef

It is no longer legal to put arbitrary trash after "#endif", so that
identifier has to go.  "#endif /* notdef */" is better.

Note also that you need to be careful about what you put inside #ifdef,
because it is *not* completely ignored.  The above example should be okay,
but in general the contents have to be either legal C tokens or things
that could not be mistaken for C tokens.  Notably, an unmatched ' or " is
not kosher.
-- 
"But this *is* the simplified version   | Henry Spencer @ U of Toronto Zoology
for the general public."     -S. Harris |  henry@zoo.toronto.edu  utzoo!henry