[cairo-bugs] [Bug 77931] NULL pointer dereference : _clip_and_composite_boxes() tries to destroy __cairo_clip_all's path

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Apr 26 15:29:03 PDT 2014


--- Comment #2 from Uli Schlachter <psychon at znc.in> ---
Sadly no clear test case for this.

Since drawing with an all-clipped clip doesn't do anything at all, something
should notice this and return success early on.

Instead of your patch, could you try adding the following at the beginning of
_clip_and_composite_boxes()? Thanks (Hm, and I'd be curious how exactly this
can happen at all, the higher levels should check for all-clipped earlier, I

if (_cairo_clip_is_all_clipped (clip))

(Sorry, my main work computer broke and I am having some problems due to this)

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