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From: net@tub.UUCP (Oliver Laumann)
Newsgroups: comp.lang.c
Subject: Lvalues and casts
Message-ID: <847@tub.UUCP>
Date: 23 May 89 08:20:56 GMT
Reply-To: net@tub.UUCP (Oliver Laumann)
Organization: Technical University of Berlin, Germany
Lines: 18

I just found out (by accident; I didn't want to actually use it)
that the GNU cc with the -ansi option, the cc under SunOS 4.0 and
the Greenhills C-compiler all happily compile the following program
(without any warnings):

    f () {
	int *ip;
	char *cp;

	(int *)cp = ip;
    }

The PCC, however, says "illegal lvalue in assignment".  Is this legal
C, i.e. is the result of a cast really an lvalue?

Regards,
--
Oliver Laumann              net@TUB.BITNET              net@tub.UUCP