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From: chris@umcp-cs.UUCP (Chris Torek)
Newsgroups: net.lang.c
Subject: Re: Re: Question of Ignorance
Message-ID: <5857@umcp-cs.UUCP>
Date: Fri, 17-May-85 16:57:18 EDT
Article-I.D.: umcp-cs.5857
Posted: Fri May 17 16:57:18 1985
Date-Received: Sun, 19-May-85 00:30:25 EDT
References: <198@unccvax.UUCP>, <1427@bbncca.ARPA> <5590@utzoo.UUCP> <480@bbnccv.UUCP> <248@ucbcad.UUCP>
Organization: U of Maryland, Computer Science Dept., College Park, MD
Lines: 14

> #define FREE(ptr)	free(char *) ptr); (char *) (ptr) = (char *) -1;

> I have wanted to do this at various times...

Try

#define FREE(p) (free ((char *) (p)), *(char **) &(p) = (char *) -1)

(not that there is any guarantee that this does anything useful and/or
makes sense in the machine's architecture.)
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 4251)
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