From owner-freebsd-hackers Mon Nov 2 20:04:09 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id UAA03480 for freebsd-hackers-outgoing; Mon, 2 Nov 1998 20:04:09 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA03475 for ; Mon, 2 Nov 1998 20:04:06 -0800 (PST) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id OAA12945; Tue, 3 Nov 1998 14:33:42 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id OAA21958; Tue, 3 Nov 1998 14:33:42 +1030 (CST) Message-ID: <19981103143341.X354@freebie.lemis.com> Date: Tue, 3 Nov 1998 14:33:41 +1030 From: Greg Lehey To: Marc Slemko , Terry Lambert Cc: hackers@FreeBSD.ORG Subject: Re: scanf in the kernel? References: <199811012142.OAA27464@usr05.primenet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: ; from Marc Slemko on Mon, Nov 02, 1998 at 09:42:35AM -0800 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Monday, 2 November 1998 at 9:42:35 -0800, Marc Slemko wrote: > On Sun, 1 Nov 1998, Terry Lambert wrote: > >>> #define memcpy(d,s,n) bcopy(s,d,n) >>> >>> not exactly rocket science :-) >> >> Actually, bcopy is closer to memmove, since it supports overlapping >> ranges as its arguments. > > bcopy doesn't support overlapping ranges on all systems. > > eg. IRIX 6.2 man page: > > NOTE > The use of overlapping buffers with bcopy is not guaranteed to work. Use > the memmove(3C) function if the buffers might overlap. The bcopy that allows no overlap is not the true bcopy. Must be a System Vism. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message