qt4 and xcb

[Jeremy A. Kolb]

On Fri, 23 Feb 2007, Gabriel C wrote:

> S.Çağlar Onur wrote:
> > 22 Şub 2007 Per tarihinde, S.Çağlar Onur şunları yazmıştı: 
> >   
> >>> We are using vanilla qt4 yes.
> >>>       
> >> qt-copy patches seems not responsible at first sight, recompiling qt4 much
> >> more sense to me. Thanks for advice.
> >>     
> >
> > Still no luck, recompiling with debug symbols gaves following backtrace (all 
> > examples bundles with qt source also gaves same bt);
> >
> > [caglar at zangetsu][~]> ldd /usr/bin/designer-qt4 | grep xcb
> >         libxcb-xlib.so.0 => /usr/lib/libxcb-xlib.so.0 (0xb6ee6000)
> >         libxcb.so.1 => /usr/lib/libxcb.so.1 (0xb6ecd000)
> >
> > [caglar at zangetsu][~]> gdb designer-qt4
> > GNU gdb 6.5
> > Copyright (C) 2006 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public License, and you are
> > welcome to change it and/or distribute copies of it under certain conditions.
> > Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB.  Type "show warranty" for details.
> > This GDB was configured as "i686-pc-linux-gnu"...(no debugging symbols found)
> > Using host libthread_db library "/lib/libthread_db.so.1".
> >
> > (gdb) run -dograb
> > Starting program: /usr/bin/designer-qt4 -dograb
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > (no debugging symbols found)
> > [Thread debugging using libthread_db enabled]
> > [New Thread -1225111856 (LWP 11903)]
> > designer-qt4: xcb_xlib.c:41: xcb_xlib_lock: Sav `!c->xlib.lock' başarısızlığa 
> > uğradı.
> >
> > Program received signal SIGABRT, Aborted.
> > [Switching to Thread -1225111856 (LWP 11903)]
> > 0xb7fd57f2 in QWidget::inputMethodEvent () from /lib/ld-linux.so.2
> > (gdb) bt
> > #0  0xb7fd57f2 in QWidget::inputMethodEvent () from /lib/ld-linux.so.2
> > #1  0xb701cffe in raise () from /lib/libc.so.6
> > #2  0xb711eff4 in ?? () from /lib/libc.so.6
> > #3  0xb6fa46d0 in ?? ()
> > #4  0xb701e8ce in abort () from /lib/libc.so.6
> > #5  0x080fba90 in ?? ()
> > #6  0xb7120120 in __after_morecore_hook () from /lib/libc.so.6
> > #7  0x0000005e in ?? ()
> > #8  0xb705cd31 in realloc () from /lib/libc.so.6
> > #9  0xb7120120 in __after_morecore_hook () from /lib/libc.so.6
> > #10 0x080fba90 in ?? ()
> > #11 0x0000005e in ?? ()
> > #12 0x080fba88 in ?? ()
> > #13 0x00000068 in ?? ()
> > #14 0x080fba90 in ?? ()
> > #15 0xb711eff4 in ?? () from /lib/libc.so.6
> > #16 0x0000005e in ?? ()
> > #17 0x080fba90 in ?? ()
> > #18 0x0000005d in ?? ()
> > #19 0xb7051f31 in vasprintf () from /lib/libc.so.6
> > #20 0x080fba90 in ?? ()
> > #21 0x0000005e in ?? ()
> > #22 0xbfe26080 in ?? ()
> > #23 0x080fba90 in ?? ()
> > #24 0x00000000 in ?? ()
> > (gdb)  
> >
> > Could you please check your qt4/qt4 apps linked against libxcb?
> 
> Well they are :
> 
> crazy at zwerg:~/K$ ldd /usr/bin/designer|grep xcb
> libxcb-xlib.so.0 => /usr/lib/libxcb-xlib.so.0 (0xb70f4000)
> libxcb.so.1 => /usr/lib/libxcb.so.1 (0xb6fbc000)
> 
> 
> Gabriel
> 
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> 

Are you sure you've upgraded your server and all of the extensions you use 
to the latest versions?  As far as I know all of these assertions have 
been fixed (except for one in java iirc).

Jeremy