[Xquartz-dev] libGL.1.2.dylib shipped with 2.3.3 RC5 makes applications crash

[vmrsss]

Hello

> Changed 3 hours ago by jeremyhu@…
> 	• status changed from new to closed
> 	• resolution set to worksforme
> Please bring this up on xquartz-dev for faster iteration and more  
> eyes.
>
As required, I am bringing this to the developer list. Please find  
below my original report and attachment.
> This bug report is vague and I can't really do anything about it  
> without specifics.
>
Yes, that's right and I am aware of it. Unfortunately, I am not  
acquainted at all with XQuartz.
> Please give me examples of applications that fail with the new libGL.
>
(OK, but let's postpone this a bit longer)
> mplayer is not a good example as it's not using GLX. It's using  
> OpenGL.framework directly.
>
Well, that cannot be, because as I link /usr/X11/lib/libGL.1.2.dylib  
to the new (resp old) dylib mplayer keeps crashing (resp works just  
fine).

I suppose the key here is to run

	mplayer -vo macosx

(as eg mplayer -vo x11 works). Have you tried that? This activates  
vo_macosx.m which uses libGL, eg: "nm -a vo_macosx.o" list includes:

>          U _glBegin
>          U _glBindTexture
>          U _glClear
>          U _glColor3f
>          U _glColor4f
>          U _glDepthMask
>          U _glDisable
>          U _glEnable
>          U _glEnd
>          U _glFlush
>          U _glLoadIdentity
>          U _glMatrixMode
>          U _glOrtho
>          U _glTexCoord2f
>          U _glVertex2i
>          U _glViewport


Can it be that the dylib system get confused with different versions  
of libGL.1.2? I have just noticed something which is likely to be  
significant: the old libGL (the one which works) appears to link a  
libGL.dylib v1.0 from the OpenGL framework, while the new libGL, doesnt:

> $ otool -L /usr/X11/lib/libGL.1.2.dylib.new
> /usr/X11/lib/libGL.1.2.dylib.new:
> 	/usr/X11/lib/libGL.1.dylib (compatibility version 1.2.0, current  
> version 1.2.0)
> 	/usr/lib/libXplugin.1.dylib (compatibility version 1.0.0, current  
> version 1.0.0)
> 	/System/Library/Frameworks/ApplicationServices.framework/Versions/A/ 
> ApplicationServices (compatibility version 1.0.0, current version  
> 34.0.0)
> 	/usr/X11/lib/libXext.6.dylib (compatibility version 11.0.0, current  
> version 11.0.0)
> 	/usr/X11/lib/libX11.6.dylib (compatibility version 9.0.0, current  
> version 9.0.0)
> 	/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current  
> version 1.0.0)
> 	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current  
> version 111.1.3)
> $
> $ otool -L /usr/X11/lib/libGL.1.2.dylib.old
> /usr/X11/lib/libGL.1.2.dylib.old:
> 	/usr/X11/lib/libGL.1.dylib (compatibility version 1.2.0, current  
> version 1.2.0)
> 	/usr/lib/libXplugin.1.dylib (compatibility version 1.0.0, current  
> version 1.0.0)
> 	/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/ 
> libGL.dylib (compatibility version 1.0.0, current version 1.0.0)
> 	/System/Library/Frameworks/ApplicationServices.framework/Versions/A/ 
> ApplicationServices (compatibility version 1.0.0, current version  
> 34.0.0)
> 	/System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL  
> (compatibility version 1.0.0, current version 1.0.0)
> 	/usr/X11/lib/libXext.6.dylib (compatibility version 11.0.0, current  
> version 11.0.0)
> 	/usr/X11/lib/libX11.6.dylib (compatibility version 9.0.0, current  
> version 9.0.0)
> 	/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current  
> version 1.0.0)
> 	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current  
> version 111.1.3)
>


Regards,
-vmrsss

Begin forwarded message:
> From: "XQuartz" <trac at macosforge.org>
> Date: 22 April 2009 21:51:02 BST
> To: undisclosed-recipients:;
> Subject: [XQuartz] #259: libGL.1.2.dylib shipped with 2.3.3 RC5  
> makes applications crash
> Reply-To: noreply at macosforge.org
>
> #259: libGL.1.2.dylib shipped with 2.3.3 RC5 makes applications crash
> ------------------------------ 
> +---------------------------------------------
> Reporter:  vmrsss@…          |       Owner:  jeremyhu@…
>     Type:  crash             |      Status:  new
> Priority:  major             |   Milestone:  2.3.3
> Component:  x11-libs          |     Version:  dev (xorg-server-1.4- 
> apple)
> Keywords:                    |
> ------------------------------ 
> +---------------------------------------------
> Hello. I am unsure whether to raise a ticket or email xquartz-dev,  
> as I
> don't know that the one I am reporting is a bug. Please bear with me.
>
> Is X11-2.3.3 supposed to be backward compatible? I have installed  
> it, and
> found that a number of applications which use /usr/X11/lib/libGL. 
> 1.dylib
> crash. I have also verified that replacing libGL.1.2.dylib with the
> corresponding file from X11-2.3.2.1, the applications seem to run well
> again (incidentally, I found strange that the two version of the  
> library
> are very different in size: 2.3M for 2.3.2.1, against 798K for 2.3.3).
>
> Is this expected? I wouldn't think so, or there would at least have  
> been a
> bump version number of GL. So, is it a bug to be fixed in X11-2.3.3?
>
> I attach below the output of GDB in the case of one crash (of the  
> open-
> source application mplayer). I don't think it is particularly  
> useful, it
> doesn't  am happy to help debug, but I need to be instructed about  
> what
> information/tests you may need.
>
> Question: is it safe to downgrade to 2.3.2.1 by simply installing
> X11-2.3.2.1 on top of 2.3.3.RC5, or should I remove /usr/X11 entirely
> before reinstalling? Thx

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