Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!gvlf3.gvl.unisys.com!tredysvr!cellar!rogue
From: rogue@cellar.UUCP (Rogue Winter)
Newsgroups: comp.lang.c
Subject: Re: Variable structure size -- ANSI ?
Message-ID: <1D6c12w164w@cellar.UUCP>
Date: 13 Apr 91 22:23:35 GMT
References: <1991Apr12.234258.23800@ism.isc.com>
Sender: bbs@cellar.UUCP (The Cellar BBS)
Organization: The Cellar BBS and public access system
Lines: 32

willcr@bud.sos.ivy.isc.com (Will Crowder) writes:

> The ANSI standard guarantees that elements of a structure will be allocated
> in the order declared.  However, there may be any amount of padding between
> structure elements.  But yes, for
> 
> 	struct foo {
> 		int a;
> 		int b;
> 	};
> 
> &foo.b is guaranteed to be greater then &foo.a.  Also, &foo is guaranteed
> to be equal to &foo.a.
> 

Just a quick follow-up question: while

        struct foo
        {   short a;
            short b;
        }
is guaranteed to produce &b > &a, will

        struct bar
        {   short a,b;  }
also be guaranteed, or will the pointer order be compiler-dependent?


Rogue Winter      : "How can you say I only protected people in South
rogue@cellar.uucp : Philadelphia?  I protected people all over this city; it
uunet!cellar!rogue: didn't matter if they were in South Philadelphia or
Cellar 215/3369503: Northeast Philadelphia."  -- Frank Rizzo, 4/12/91