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From: sk malik <srikrishanmalik@yahoo.co.in>
To: linux-kernel@vger.kernel.org
Subject: why use memcpy when memmove is there?
Date: Mon, 13 Aug 2007 11:55:40 +0100 (BST)	[thread overview]
Message-ID: <977159.24669.qm@web7606.mail.in.yahoo.com> (raw)

Hi, All

We were looking at  "[kernel]/lib/string.c"
(http://lxr.linux.no/source/lib/string.c#L500)

memcpy copies a part of memory to some other location
but It will not work for all cases of overlapping
blocks.(if the start of destination block falls
between the source block)

while memove copes with overlapping areas.

then why is memcpy present in the sources can't we
simply do

"#define memcpy memmove" in include/linux/string.h

or am I missing something?

Regards
Sri



      Unlimited freedom, unlimited storage. Get it now, on http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html/

             reply	other threads:[~2007-08-13 14:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-08-13 10:55 sk malik [this message]
2007-08-13 14:15 ` why use memcpy when memmove is there? Jan Engelhardt
2007-08-13 15:02 ` Stefan Richter
2007-08-14 21:59 ` David Schwartz
     [not found] <fa.tH0XPZg4jvmqSQh3iOmzbwrRN9Y@ifi.uio.no>
2007-08-13 14:33 ` Robert Hancock

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