[Fedora-trans-ar] Re: Arabic issue #18: app.setFont(QFont("")) causes a run-time crash!

[Munzir Taha]

On Yaum al-Khamees 15 Muharram 1426 1:30 pm, Lars Knoll wrote:
> Hi Munzir,

> The best way would be to configure Qt with -debug, then compile and run gdb
> application core yourself to get a valid stack trace.

I would rather prefer skip reconfiguring if possible. Let me try:

./configure -help
 *  -release ........... Compile and link Qt with debugging turned off.
    -debug ............. Compile and link Qt with debugging turned on.

Which says -release is the default. However I wonder why are those -g, 
lQtCore_debug and -lQtGui_debug emitted in a default make?!

# make
g++ -c -pipe -g -Wall -W -D_REENTRANT -DQT_CORE_LIB -DQT_GUI_LIB -DQT_SHARED
... -L/usr/local/qt-build/lib -lQtCore_debug -lQtGui_debug -lpthread


Now, let my try debug it myself:
from gdb:

#6  0xb7ebbed2 in qt_message_output (msgType=QtFatalMsg,
    buf=0xbfffcda0 "ASSERT: \"(next == length && gp == current.num_glyphs) || 
logClusters[next] == gp\" in file /usr/local/qt/src/gui/text/qtextlayout.cpp, 
line 1146") at /usr/local/qt/src/core/global/qglobal.cpp:567
567             abort(); // trap; generates core dump
(gdb) print gp
No symbol "gp" in current context.
(gdb) print current.num_glyphs
No symbol "current" in current context.
(gdb)                                    

Can anyone tell me why print shows "No symbol"?

> I'll look into your reports in the next days.

Surely, you will solve it before me ;)

-- 
Munzir Taha  PGP Key available
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Telecommunications and Electronics Engineer
Mandrake Club Member
Maintainer of the OpenBugs Wiki page at
http://arabic-fedora.org/
Maintainer of Fedora Arabic Translation Project
https://listman.redhat.com/mailman/listinfo/fedora-trans-ar
CIW Designer, ICDL, MOUS, Linux+, LPI 101
New Horizons CLC, Riyadh, SA