Subject: Re: exploit with memcpy()
To: TAMURA Kent <email@example.com>
From: None <firstname.lastname@example.org>
Date: 07/02/2002 22:55:55
>> If I count correctly, you just made memcpy() slow down by about 10%.
>I don't think so.
> - The check is at the outside of the loop.
> - It is done only if the destination address < the source address (+length)
> - Many applications uses gcc's builtin memcpy().
unluckily the 3rd bullet means that the patch won't take effect
to most of the binaries, am i right? do we want to modify gcc to
generate the change you've proposed?