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From: meissner@dg_rtp.UUCP
Newsgroups: comp.lang.c
Subject: Re: Character types in ANSI C
Message-ID: <1223@dg_rtp.UUCP>
Date: Fri, 27-Feb-87 07:49:23 EST
Article-I.D.: dg_rtp.1223
Posted: Fri Feb 27 07:49:23 1987
Date-Received: Sun, 1-Mar-87 12:22:02 EST
References: <472@myrias.UUCP>
Reply-To: meissner@dg_rtp.UUCP (Michael Meissner)
Organization: Data General (Languages @ Research Triangle Park, NC.)
Lines: 20

In article <472@myrias.UUCP> cg@myrias.UUCP (Chris Gray) writes:
> 
> What exactly are the compatibility rules for character types in ANSI C?
> I.e. which of the following are legal:
> 
>     char *p1;
>     unsigned char *p2;
>     signed char *p3;
> 
>     p1 = p2;	    /* case 1 */
>     p1 = p3;	    /* case 2 */
>     p2 = p3;	    /* case 3 */
> 
These are illegal.  Even though the underlying bit representation may be
the same, they are different types.  The same holds for pointers to int
and pointers to long on a machines where sizeof(int) == sizeof(long).
-- 
	Michael Meissner, Data General	Uucp: ...mcnc!rti-sel!dg_rtp!meissner

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