Date: Sat, 7 Jul 2001 11:50:34 -0700 From: "David O'Brien" <obrien@FreeBSD.ORG> To: Peter Jeremy <peter.jeremy@alcatel.com.au> Cc: Matthew Jacob <mjacob@feral.com>, freebsd-current@FreeBSD.ORG Subject: Re: chgrp broken on alpha systems Message-ID: <20010707115034.D16759@dragon.nuxi.com> In-Reply-To: <20010706163743.D506@gsmx07.alcatel.com.au>; from peter.jeremy@alcatel.com.au on Fri, Jul 06, 2001 at 04:37:43PM %2B1000 References: <20010706150804.B506@gsmx07.alcatel.com.au> <Pine.BSF.4.21.0107052211560.37078-100000@beppo> <20010706163743.D506@gsmx07.alcatel.com.au>
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On Fri, Jul 06, 2001 at 04:37:43PM +1000, Peter Jeremy wrote: > >On i386, 'gcc -fsyntax-only -Wall x.c' produces no error. On > >NetBSD/alpha (same compiler, really), this produces: > > > >x.c: In function `func': > >x.c:4: warning: cast from pointer to integer of different size > > > >It'd be *really* nice if we could add a flag where such errors could be > >checked for and emitted for an i386 build. > > David would know for certain, but I think this is messy to detect. As > I see it, the problem is that when casting a pointer type to an > integer type, gcc only looks at the lengths of the types - on an i386, > sizeof(int) == sizeof(long) == sizeof(void *), whereas on an Alpha, > sizeof(int) != sizeof(long) == sizeof(void *). Whilst it is possible > to change the check so that it verifies that the integer type is > `long' (or longer), this may cause other problems. Correct. -- -- David (obrien@FreeBSD.org) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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