On Tue, Nov  1, 2011 at 06:08:51 -0500, pac...@kosh.dhis.org wrote:

> I have a few things to update relating to the bug investigation.
> 
> In the previous message I wrote:
> > Still no server crashes in any case.
> 
> I got another server crash just now. I just wasn't using a big enough image
> yesterday.
> 
> > 
> > I got a few more clues though, after studying xli expecting to find the 
> > cause
> > there, I'm now back to thinking this is a server-side bug.
> 
> A bug in the client side of XShm is another possibility to consider. Is there
> any documentation covering the on-the-wire format of MIT-SHM requests? I can
> only find the documentation for using the library.
> 
Well if the server crashes then there's at least a server bug.  As for
the wire format I don't know if there's more than the protocol headers
from xextproto (x11proto-xext-dev on Debian) and
http://cgit.freedesktop.org/xcb/proto/tree/src/shm.xml

> > And it shows the bug even on Xvfb, so this seems to be a core Xserver bug,
> > not a driver thing.
> 
> and now I've seen it on Xephyr too.
> 
> > I'll work on replacing the hacked xli with a standalone demo.
> 
> Done. Here's the demo program. Complete with Makefile and README!
> 
Thanks, I'll try and take a look.

Cheers,
Julien



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