Re: [dev] [st] [PATCH 4/3] tresize: remove unnecessary if

From: <noname_AT_inventati.org>
Date: Sun, 12 Apr 2015 08:56:40 +0000

On Sun, Apr 12, 2015 at 10:41:36AM +0200, Silvan Jegen wrote:
> I was thinking about this option too but in that case you would be
> calling memmove with an identical src and dst when i == 0. The man page
> for glibc memmove(3) does not mention anything about this being a noop
> so I am not sure that is a good thing to do.

"The memory areas may overlap: copying takes place as though the bytes in
src are first copied into a temporary array that does not overlap src
or dest, and the bytes are then copied from the temporary array to dest."

src == dest is just a case of overlapping areas, it must work.
Received on Sun Apr 12 2015 - 10:56:40 CEST