[Bug 181221] New: lighttable crashes when playing with the zoom

http://bugs.kde.org/show_bug.cgi?id=181221

           Summary: lighttable crashes when playing with the zoom
           Product: digikam
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:            (using Devel)
OS:                Linux
Installed from:    Compiled sources

I have this crash after some minutes of playing with the light table. This
seems to be related to the zoom tool in the low-right corner of the left
picture. Attached the bt i got from gdb.


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[Gilles Caulier-4]

http://bugs.kde.org/show_bug.cgi?id=181221


Gilles Caulier caulier gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Light Table
            Version|unspecified                 |0.10.0-svn




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--- Comment #1 from Salvatore Brigaglia <torebrigaglia yahoo it>  2009-01-18 20:08:28 ---
Created an attachment (id=30396)
 --> (http://bugs.kde.org/attachment.cgi?id=30396)
the backtrace from gdb


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http://bugs.kde.org/show_bug.cgi?id=181221





--- Comment #2 from Gilles Caulier <caulier gilles gmail com>  2009-01-18 20:16:35 ---
attachement is an unsuitable binary file. please post text file...

Gilles Caulier


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Salvatore Brigaglia torebrigaglia yahoo it changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #30396|0                           |1
        is obsolete|                            |




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--- Comment #3 from Salvatore Brigaglia <torebrigaglia yahoo it>  2009-01-18 21:08:57 ---
Created an attachment (id=30397)
 --> (http://bugs.kde.org/attachment.cgi?id=30397)
digikam output and gdb backtrace

the last part of the digikam output running inside gdb and the backtrace of the
crash


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[Marcel Wiesweg]

http://bugs.kde.org/show_bug.cgi?id=181221


Marcel Wiesweg marcel wiesweg gmx de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]




--- Comment #4 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-01-18 22:08:04 ---
Pasting relevant lines:

QObject: Do not delete object, 'unnamed', during its event handler!            
Program received signal SIGSEGV, Segmentation fault.
0xb5dcea03 in ?? () from /usr/lib/libQtGui.so.4
(gdb) all bt thread apply
Undefined command: "all".  Try "help".
(gdb) bt
#0  0xb5dcea03 in ?? () from /usr/lib/libQtGui.so.4
#1  0xb5dcdaf5 in QApplication::x11ProcessEvent(_XEvent*) () from
/usr/lib/libQtGui.so.4
#2  0xb5df60ba in ?? () from /usr/lib/libQtGui.so.4
#3  0xb4f9f9a8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#4  0xb4fa3063 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0xb4fa3221 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#6  0xb58cffb8 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#7  0xb5df57b5 in ?? () from /usr/lib/libQtGui.so.4
#8  0xb58a401a in
QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/libQtCore.so.4
#9  0xb58a41da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/libQtCore.so.4
#10 0xb58a6895 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#11 0xb5d5c777 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#12 0x082f75f6 in main (argc=1, argv=0xbffff064) at
/home/tore/sources/graphics/digikam/digikam/main.cpp:188


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--- Comment #5 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-01-18 22:13:26 ---
Confirmed:

#0  0x00007ffff2e591fd in QETWidget::translateMouseEvent (this=0x3edc440,
event=0x7fffffffc6e0) at kernel/qapplication_x11.cpp:3991
#1  0x00007ffff2e57a37 in QApplication::x11ProcessEvent (this=0x5c,
event=0x7fffffffd0f0) at kernel/qapplication_x11.cpp:3158
#2  0x00007ffff2e7e1d4 in x11EventSourceDispatch (s=0x959d70, callback=0,
user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:142
#3  0x00007fffeca010db in g_main_context_dispatch () from
/usr/lib64/libglib-2.0.so.0
#4  0x00007fffeca048ad in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007fffeca04a6b in g_main_context_iteration () from
/usr/lib64/libglib-2.0.so.0
#6  0x00007ffff7b224ef in QEventDispatcherGlib::processEvents (this=0x956640,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:319
#7  0x00007ffff2e7d97f in QGuiEventDispatcherGlib::processEvents
(this=0x7fffffffc680, flags=<value optimized out>)
    at kernel/qguieventdispatcher_glib.cpp:198
#8  0x00007ffff7af89a2 in QEventLoop::processEvents (this=<value optimized
out>, flags={i = -11296}) at kernel/qeventloop.cpp:143
#9  0x00007ffff7af8b2d in QEventLoop::exec (this=0x7fffffffd420, flags={i =
-11216}) at kernel/qeventloop.cpp:194
#10 0x00007ffff7afaffd in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:845
#11 0x00000000006706b7 in main (argc=<value optimized out>,
argv=0x7fffffffdc68)


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--- Comment #6 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-01-18 22:16:31 ---
I guess the debug message "Do not delete during event handler" hints at the
culprit.

#0  qWarning (msg=0x7ffff7b846e0 "QObject: Do not delete object, '%s', during
its event handler!") at global/qglobal.cpp:2186
#1  0x00007ffff7b107f9 in ~QObject (this=0x3f17910) at kernel/qobject.cpp:900
#2  0x00007ffff2e4078f in ~QWidget (this=0x3f17910) at kernel/qwidget.cpp:1351
#3  0x00007ffff11b60f6 in ~PanIconWidget (this=0x3f17910)
    at
/home/marcel/freshmeat/multimedia/kde4/src/extragear/graphics/digikam/libs/widgets/common/paniconwidget.cpp:90
#4  0x00007ffff7b07941 in QObjectPrivate::deleteChildren (this=0x3f17710) at
kernel/qobject.cpp:1884
#5  0x00007ffff2e405ed in ~QWidget (this=0x3dbaa40) at kernel/qwidget.cpp:1338
#6  0x00007ffff704132d in ~KPopupFrame (this=0x3dbaa40) at
/usr/src/debug/kdelibs-4.1.3/kdeui/widgets/kdatetable.cpp:784
#7  0x000000000051a1b3 in Digikam::LightTablePreview::slotPanIconSelectionMoved
(this=0x3cc1290, r=@0x3ef733c, b=true)
    at
/home/marcel/freshmeat/multimedia/kde4/src/extragear/graphics/digikam/utilities/lighttable/lighttablepreview.cpp:571
#8  0x000000000051f733 in Digikam::LightTablePreview::qt_metacall
(this=0x3cc1290, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,
    _a=0x7fffffffbf00) at
/home/marcel/freshmeat/multimedia/kde4/build/extragear/graphics/digikam/digikam/lighttablepreview.moc:106
#9  0x00007ffff7b0e454 in QMetaObject::activate (sender=0x3f17910,
from_signal_index=<value optimized out>, to_signal_index=27, argv=0x3f179b0)
    at kernel/qobject.cpp:3031
#10 0x00007ffff11b6713 in Digikam::PanIconWidget::signalSelectionMoved
(this=0x7ffff7b846e0, _t1=<value optimized out>, _t2=true)
    at
/home/marcel/freshmeat/multimedia/kde4/build/extragear/graphics/digikam/digikam/paniconwidget.moc:90
#11 0x00007ffff11b68ad in Digikam::PanIconWidget::mouseReleaseEvent
(this=0x3f17910)
    at
/home/marcel/freshmeat/multimedia/kde4/src/extragear/graphics/digikam/libs/widgets/common/paniconwidget.cpp:312


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Marcel Wiesweg marcel wiesweg gmx de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED




--- Comment #7 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-01-18 22:22:16 ---
SVN commit 913166 by mwiesweg:

Use deleteLater (already done in all seven other occurrences)

BUG: 181221

 M  +1 -1      lighttablepreview.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=913166


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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|0.10.0-svn                  |0.10.0




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