Bug 379823

Summary:	All gnustep apps segfault inside pixman if OpenGL enabled in Cairo backend
Product:	Gentoo Linux	Reporter:	Hypnos <hypnos75>
Component:	[OLD] Unspecified	Assignee:	Gentoo Gnustep project <gnustep>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	backtrace for AClock cave info gnustep-back-cairo Patch to gnustep-back-cairo-0.20.1.ebuild

Description Hypnos 2011-08-19 05:08:53 UTC

Created attachment 283849 [details]
backtrace for AClock

The bug seems to be the same as the one here --

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=613221

Disabling the "opengl" USE flag for either cairo and gnustep-back-cairo does *not* work around the problem.  FWIW, gnustep-back-cairo links to OpenGL even with the "opengl" USE flag disabled.

A GNUstep list thread suggests it's simply a matter of Cairo point release:

http://osdir.com/ml/discuss-gnustep-gnu/2011-03/msg00025.html

My own backtrace for AClock is attached, as well as my paludis info.

Possibly relevant package versions:

gnustep-gui-0.20.0
gnustep-back-cairo-0.20.1
cairo-1.10.2-r1
pixman-0.22.0  (0.22.2 has the same problem)
mesa-7.10.3

Comment 1 Hypnos 2011-08-19 05:09:34 UTC

Created attachment 283851 [details]
cave info gnustep-back-cairo

Comment 2 Hypnos 2011-08-19 07:48:34 UTC

Created attachment 283871 [details, diff]
Patch to gnustep-back-cairo-0.20.1.ebuild

The workaround for the bug does work if OpenGL is properly disabled during configure.  The problem in the ebuild is that it assumes the standard autoconf switches "--enable-glx" and "--disable-glx", when in fact the configure script only supports "--disable-glx".

Comment 3 Bernard Cafarelli gentoo-dev

2011-08-23 15:59:57 UTC

Thanks for the detailed report :)

Apparently mesa is indeed the culprit:
https://bugs.freedesktop.org/show_bug.cgi?id=35268
(which explains why I did not see it, I use nvidia libGL)

Hopefully this will be fixed soon there... In the meantime I've fixed the opengl USE-flag, thanks!

Once the bug is fixed and a new mesa released, I'll update the dependencies to reflect that

Comment 4 Matt Turner gentoo-dev

2012-10-07 23:57:45 UTC

https://bugs.freedesktop.org/show_bug.cgi?id=34335 looks related...

Comment 5 Bernard Cafarelli gentoo-dev

2013-06-10 22:15:18 UTC

Looks like all upstream bugs are now closed and patches removed. Indeed I now use intel video driver, and gnustep-back-cairo+mesa works fine here :)

Don't hesitate to reopen if you still have this problem!