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From: karl@haddock.ima.isc.com (Karl Heuer)
Newsgroups: comp.lang.c
Subject: Re: Using Macros
Message-ID: <17298@haddock.ima.isc.com>
Date: 8 Aug 90 23:00:09 GMT
References: <362.26be9dcc@astro.pc.ab.com> <21057@grebyn.com> <642@travis.csd.harris.com>
Reply-To: karl@kelp.ima.isc.com (Karl Heuer)
Organization: Interactive Systems, Cambridge, MA 02138-5302
Lines: 8

In article <642@travis.csd.harris.com> brad@SSD.CSD.HARRIS.COM (Brad Appleton) writes:
>	#define CHECK(cond)  ((cond) || exit(-1))

Won't work if exit() is properly declared as void.  Try one of
	#define CHECK(cond)  ((cond) ? exit(-1) : (void)0)
	#define CHECK(cond)  ((cond) || (exit(-1), 0))

Karl W. Z. Heuer (karl@kelp.ima.isc.com or ima!kelp!karl), The Walking Lint