[cairo] Segfault at sweep_line_delete on video playback

[Bryce W. Harrington]

On Sun, Mar 16, 2014 at 06:29:15AM -0500, David Smith wrote:
> Can any of the Cairo devs take a look at this bug report and determine
> whether or not this is a Cairo bug or if it's something else?
> 
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=739262#50

Yes, it does look like a bug in the tessellation code.  ickle is
probably the dev you should talk to.  Meanwhile, it would be helpful to
have:

 gdb> print *sweep
 gdb> print *rectangle
 gdb> print *(rectangle->left.prev)

Detailed steps to reproduce would of course be extremely helpful here
too.

Bryce