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From: mikeb@inset.UUCP (Mike Banahan)
Newsgroups: net.lang.c
Subject: Re: Global ptrs init to NULL or 0000?
Message-ID: <798@inset.UUCP>
Date: Fri, 15-Nov-85 06:24:07 EST
Article-I.D.: inset.798
Posted: Fri Nov 15 06:24:07 1985
Date-Received: Sun, 17-Nov-85 07:16:22 EST
References: <772@whuxl.UUCP> <139200016@uiucdcsb>
Reply-To: mikeb@inset.UUCP (Mike Banahan)
Organization: The Instruction Set Ltd., London, UK.
Lines: 24
Xpath: stc stc-a

In article <139200016@uiucdcsb> kenny@uiucdcsb.CS.UIUC.EDU writes:
>
>OK, so what does
>
>static union {
>	int i;
>	char *p;
>	} foo;
>
>get initialized to on a machine with a non-0 NULL?  Incidentally, something
>like this appears in a LOT of UN*X programs, and is a MAJOR headache in
>attempting to port to a machine with a non-0 NULL.

This is an example of an initialised union; explicit initialisation of unions
is not permitted in X3J11. Almost quoting the draft standard ``static objects
not initialised explicitly are initialised as if every *scalar* member
were assigned the integer constant 0 ''.

Now a union is not a scalar object. But its members would seem to be.
Perhaps herein lies an ambiguity.

-- 
Mike Banahan, Technical Director, The Instruction Set Ltd.
mcvax!ukc!inset!mikeb