Bug 79644

Summary:	SEGV: cairo-spans-compositor.c:96: get_clip_surface: Assertion `clip->path'"
Product:	cairo	Reporter:	Germán Poo-Caamaño <gpoo+bfdo>
Component:	general	Assignee:	Chris Wilson <chris>
Status:	RESOLVED MOVED	QA Contact:	cairo-bugs mailing list <cairo-bugs>
Severity:	normal
Priority:	medium	CC:	bitlord0xff, jason, siddhantsaraf
Version:	unspecified
Hardware:	Other
OS:	All
See Also:	https://bugzilla.gnome.org/show_bug.cgi?id=731211
Whiteboard:
i915 platform:		i915 features:
Attachments:	backtrace the PDF file which causes the crash backtrace-sid.log test program

Description Germán Poo-Caamaño 2014-06-04 16:57:56 UTC

Created attachment 100408 [details]
backtrace

This was reported in https://bugzilla.gnome.org/show_bug.cgi?id=731211

And I can reproduce it by running pdftocairo -jpeg.

The document that makes the crash reproducible is available at:
http://dyb.com/micom/MAX220-MAX249-67423.pdf

The issue happens with the page 9.  A full backtrace is attached.

poppler master (fed71eb) and cairo (2a7f133)

Comment 1 Siddhant Saraf 2015-02-12 16:22:34 UTC

Encountered the same bug when opening the a pdf file (attached; filename: "00785838.pdf") using evince (v3.14.1) on Ubuntu 14.10, 64-bit.
The bug is consistent and reproducible.

Also attached is the full baktrace (filename: "backtrace-sid.log").

Comment 2 Siddhant Saraf 2015-02-12 16:23:51 UTC

Created attachment 113411 [details]
the PDF file which causes the crash

Comment 3 Siddhant Saraf 2015-02-12 16:24:56 UTC

Created attachment 113412 [details]
backtrace-sid.log

Comment 4 Jason Crain 2015-09-07 17:57:43 UTC

Created attachment 118128 [details]
test program

Seems to be a bug in cairo.  Attached program causes the assertion.  Compile with:

    gcc cairo-assert.c $(pkg-config --cflags --libs cairo)

Comment 5 Massimo 2015-09-08 06:03:28 UTC

This seems to be a duplicate of bug #78339 which has a
couple of fixes suggested.

A third one could be to 

return CAIRO_INT_STATUS_UNSUPPORTED;

http://cgit.freedesktop.org/cairo/tree/src/cairo-spans-compositor.c#n560

if (need_clip_mask && (! extents->is_bounded || ! extents->clip->path))




extents->clip is dereferenced unconditionally in clip_is_region so
it should not be NULL there.

Comment 6 GitLab Migration User 2018-08-25 13:30:13 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

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