> -----Original Message-----
> From: Daniel Shahaf [mailto:[email protected]]
> Sent: dinsdag 30 augustus 2016 03:06
> To: Stefan Fuhrmann <[email protected]>
> Cc: [email protected]
> Subject: Re: fsfs: Segfault when rep line lists the all-zeroes checksum
>
> Stefan Fuhrmann wrote on Mon, Aug 29, 2016 at 22:10:07 +0200:
> > On 29.08.2016 18:57, Daniel Shahaf wrote:
> > >Line 801 sets CHECKSUM to NULL (as promised by
> svn_checksum_parse_hex()'s
> > >docstring), line 803 dereferences it unconditionally.
> > I vaguely remember that we use(d) all-0 checksums
> > as a 'no checksum' indicator. There may have been
> > some mix-up when rep structure got flattened.
>
> The all-zeroes checksum compares equal to any other checksum.
I would guess that the all 0 checksum is *also* the checksum of some very
unlikely data, so users might be able to trigger this under some very unusual
circumstances.
Bert
