Error loading GDEF / GSUB / GPOS table 28333

[Ryan Schmidt-35]

Hi. I'm the maintainer for pango in MacPorts, and a user has reported  
some problems to me that I don't know what to do with, so I'm coming  
to you for help. Here's the bug report:



http://trac.macosforge.org/projects/macports/ticket/15052



First issue:



(wireshark:24691): Pango-WARNING **: Error loading GDEF table 28333

(wireshark:24691): Pango-WARNING **: Error loading GSUB table 28333

(wireshark:24691): Pango-WARNING **: Error loading GPOS table 28333


I myself have seen this issue with graphviz, not wireshark:

http://graphviz.org/bugs/b1318.html

So I suspect a problem in pango or maybe cairo, not a problem in  
graphviz or wireshark. Though for me, I notice no problem with the  
pango/cairo output. Just the warning message of which I don't know  
what to make. I am using pango 1.20.2, cairo 1.6.4, glib 2.16.3 on  
Mac OS X 10.4.11. I've seen the issue on a Power Mac G4 with Xcode  
2.5 and a MacBook Pro with Xcode 2.4.1.



Second problem is this message:

(wireshark:24691): Pango-WARNING **: shaping failure, expect ugly  
output. shape-engine='BasicEngineFc', font='Lucida Grande 13',  
text='Initializing dissectors ...'


And apparently then no text appears (only boxes). And apparently  
downgrading from cairo 1.6.4 to 1.4.14 made the problem (one? both? I  
don't know) go away for the reporter, though at the time I  
experienced the above error message, I was using cairo 1.4.14 (1.6.x  
had not been released).



Does any of this give you any idea what might be wrong? Any other  
information I can give you to isolate it? Is pango the correct place  
to look for this problem or should I be contacting e.g. the cairo  
developers? Thanks for any thoughts you have on the matter.



_______________________________________________
gtk-i18n-list mailing list
gtk-i18n-list@...
http://mail.gnome.org/mailman/listinfo/gtk-i18n-list

[Greg Aumann]

Ryan Schmidt wrote:
> First issue:
> (wireshark:24691): Pango-WARNING **: Error loading GDEF table 28333
>
> (wireshark:24691): Pango-WARNING **: Error loading GSUB table 28333
>
> (wireshark:24691): Pango-WARNING **: Error loading GPOS table 28333
>
>
> I myself have seen this issue with graphviz, not wireshark:
This means pango is unable to load the opentype tables specified above
from the font. I have seen this and it could be a bug in the tables in
the font or in pango, more likely the font I would think.
>
> Second problem is this message:
>
> (wireshark:24691): Pango-WARNING **: shaping failure, expect ugly  
> output. shape-engine='BasicEngineFc', font='Lucida Grande 13',  
> text='Initializing dissectors ...'
>
Probably this is a consequence of the first problem. The above tables
are needed for shaping. At least this message tells you the name of the
font that is giving the problem.

When I was getting these kinds of messages I tested by running gedit
from a terminal window (so I could see the error messages) and setting
the font to the one that was giving the problem.

Greg
_______________________________________________
gtk-i18n-list mailing list
gtk-i18n-list@...
http://mail.gnome.org/mailman/listinfo/gtk-i18n-list

[Behdad Esfahbod-3]

On Sun, 2008-04-20 at 00:55 -0500, Ryan Schmidt wrote:

> Hi. I'm the maintainer for pango in MacPorts, and a user has reported  
> some problems to me that I don't know what to do with, so I'm coming  
> to you for help. Here's the bug report:
>
>
>
> http://trac.macosforge.org/projects/macports/ticket/15052
>
>
>
> First issue:
>
>
>
> (wireshark:24691): Pango-WARNING **: Error loading GDEF table 28333
>
> (wireshark:24691): Pango-WARNING **: Error loading GSUB table 28333
>
> (wireshark:24691): Pango-WARNING **: Error loading GPOS table 28333

If you know which font is causing it, open a bug at bugzilla.gnome.org
against Pango and attach the font.  I'll look into it.

> I myself have seen this issue with graphviz, not wireshark:
>
> http://graphviz.org/bugs/b1318.html
>
> So I suspect a problem in pango or maybe cairo, not a problem in  
> graphviz or wireshark. Though for me, I notice no problem with the  
> pango/cairo output. Just the warning message of which I don't know  
> what to make. I am using pango 1.20.2, cairo 1.6.4, glib 2.16.3 on  
> Mac OS X 10.4.11. I've seen the issue on a Power Mac G4 with Xcode  
> 2.5 and a MacBook Pro with Xcode 2.4.1.
>
>
>
> Second problem is this message:
>
> (wireshark:24691): Pango-WARNING **: shaping failure, expect ugly  
> output. shape-engine='BasicEngineFc', font='Lucida Grande 13',  
> text='Initializing dissectors ...'
>
>
> And apparently then no text appears (only boxes). And apparently  
> downgrading from cairo 1.6.4 to 1.4.14 made the problem (one? both? I  
> don't know) go away for the reporter, though at the time I  
> experienced the above error message, I was using cairo 1.4.14 (1.6.x  
> had not been released).

That's not good.  This typically means an stale fontconfig cache, where
the font file does not exist anymore but fontconfig reports it to pango.
It's pretty much impossible for the cairo version to have any effect on
this issue.

> Does any of this give you any idea what might be wrong? Any other  
> information I can give you to isolate it? Is pango the correct place  
> to look for this problem or should I be contacting e.g. the cairo  
> developers? Thanks for any thoughts you have on the matter.

Try "fc-cache -f".

--
behdad
http://behdad.org/

"Those who would give up Essential Liberty to purchase a little
 Temporary Safety, deserve neither Liberty nor Safety."
        -- Benjamin Franklin, 1759

_______________________________________________
gtk-i18n-list mailing list
gtk-i18n-list@...
http://mail.gnome.org/mailman/listinfo/gtk-i18n-list