From: Linus Torvalds <torvalds@osdl.org>
Date: Wed, 22 Mar 2006 04:13:21 GMT
Subject: Re: Cloning from sites with 404 overridden
Message-ID: <Pine.LNX.4.64.0603212011430.26286@g5.osdl.org>
In-Reply-To: <20060322031200.GB17954@spearce.org>



On Tue, 21 Mar 2006, Shawn Pearce wrote:
>
> '0' x 40.  :-) There's some places already in the GIT source
> which would have ``issues'' if they got an object with this hash.
> Not sure if it is actually an entirely impossible hash or just one
> that is highly improbable.

The all-zeroes hash is as improbable as any other one, and finding a 
"collision" (ie a "real object") with that hash is as improbable as any 
other collision, ie we can (and do) depend on it beign a unique identifier 
for "does not exist".

			Linus