Bug#612645: libcairo2: crashes Xorg

[Michel Dänzer <daenzer@debian.org>]

On Don, 2011-02-24 at 18:58 +0100, Mario 'BitKoenig' Holbe wrote: 
> On Thu, Feb 24, 2011 at 06:24:49PM +0100, Cyril Brulebois wrote:
> > Mario 'BitKoenig' Holbe <Mario.Holbe@TU-Ilmenau.DE> (24/02/2011):
> > > > You could try getting a full backtrace:
> > > attached. openchrome has no -dbg package, hence no symbols for that
> > you could rebuild the driver with the following env var set:
> >   DEB_BUILD_OPTIONS="debug nocheck nostrip"
> 
> Uhm, okay ... I said I'd be glad :)
> attached.

[...]

> #0  0xb7213e66 in viaExaPrepareComposite (op=<value optimized out>, pSrcPicture=0x86bafa8, 
>     pMaskPicture=0x0, pDstPicture=0x86bdc70, pSrc=0x0, pMask=0x0, pDst=0xa68ad008)

Looks like the openchrome driver can't handle source-only pictures,
where pPict->pDraw == NULL.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer