[Bug 225083] KNotes crashes when selecitng "Show All Notes" after closing a note using Alt+F4 [QWidget::hide, KNotesApp::showAllNotes]

[Dario Andres]

https://bugs.kde.org/show_bug.cgi?id=225083


Dario Andres <andresbajotierra at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
                 CC|                            |andresbajotierra at gmail.com
            Summary|crash after alt+f4 a note   |KNotes crashes when
                   |                            |selecitng "Show All Notes"
                   |                            |after closing a note using
                   |                            |Alt+F4 [QWidget::hide,
                   |                            |KNotesApp::showAllNotes]
     Ever Confirmed|0                           |1




--- Comment #1 from Dario Andres <andresbajotierra gmail com>  2010-02-01 22:47:16 ---
I could reproduce the bug here using:

Qt: 4.6.1 (kde-qt master commit 5ccbae0c2d9254efe67599137afec763d4fec0f6
        Date:   Tue Jan 19 20:42:24 2010 +0100)
KDE Development Platform: 4.4.61 (KDE 4.4.61 (KDE 4.5 >= 20100127))
kdelibs svn rev. 1082077 / kdebase svn rev. 1082077
kdepim svn rev. 1083266

on ArchLinux i686 - Kernel 2.6.32.3

Backtrace:
--

Application: KNotes (knotes), signal: Segmentation fault
[Current thread is 1 (Thread 0xb3678700 (LWP 8192))]

Thread 2 (Thread 0xb1a8eb70 (LWP 8193)):
#0  0xb7898424 in __kernel_vsyscall ()
#1  0xb52cdf41 in select () from /lib/libc.so.6
#2  0xb560a2f4 in QProcessManager::run (this=0xb579666c) at
io/qprocess_unix.cpp:245
#3  0xb551bcbc in QThreadPrivate::start (arg=0xb579666c) at
thread/qthread_unix.cpp:248
#4  0xb548b8ac in start_thread () from /lib/libpthread.so.0
#5  0xb52d501e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb3678700 (LWP 8192)):
[KCrash Handler]
#6  0x406df000 in ?? ()
#7  0x0806393a in QWidget::hide (this=0x9697408) at
/home/kde-devel/kde/src/qt/include/QtGui/../../src/gui/kernel/qwidget.h:489
#8  0x08060fdd in KNotesApp::showAllNotes (this=0x940bab8) at
/home/kde-devel/kde/src/KDE/kdepim/knotes/knotesapp.cpp:305
#9  0x08063270 in KNotesApp::qt_metacall (this=0x940bab8,
_c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf9457c8) at
/home/kde-devel/kde/build/KDE/kdepim/knotes/knotesapp.moc:127
#10 0xb5639b9c in QMetaObject::metacall (object=0x940bab8,
cl=QMetaObject::InvokeMetaMethod, idx=33, argv=0xbf9457c8) at
kernel/qmetaobject.cpp:237
#11 0xb564dc0e in QMetaObject::activate (sender=0x941ecf0, m=0xb63e9af8,
local_signal_index=1, argv=0xbf9457c8) at kernel/qobject.cpp:3275
#12 0xb590ca4a in QAction::triggered (this=0x941ecf0, _t1=false) at
.moc/debug-shared/moc_qaction.cpp:263
#13 0xb590bf21 in QAction::activate (this=0x941ecf0, event=QAction::Trigger) at
kernel/qaction.cpp:1251
#14 0xb5e59daa in QMenuPrivate::activateCausedStack (this=0x93ec1a0,
causedStack=..., action=0x941ecf0, action_e=QAction::Trigger, self=true) at
widgets/qmenu.cpp:1011
#15 0xb5e5a207 in QMenuPrivate::activateAction (this=0x93ec1a0,
action=0x941ecf0, action_e=QAction::Trigger, self=true) at
widgets/qmenu.cpp:1103
#16 0xb5e5e707 in QMenu::mouseReleaseEvent (this=0x93ec180, e=0xbf94625c) at
widgets/qmenu.cpp:2313
#17 0xb6a2f840 in KMenu::mouseReleaseEvent (this=0x93ec180, e=0xbf94625c) at
/home/kde-devel/kde/src/KDE/kdelibs/kdeui/widgets/kmenu.cpp:471
#18 0xb59881c2 in QWidget::event (this=0x93ec180, event=0xbf94625c) at
kernel/qwidget.cpp:7978
#19 0xb5e5edb5 in QMenu::event (this=0x93ec180, e=0xbf94625c) at
widgets/qmenu.cpp:2415
#20 0xb591cb26 in QApplicationPrivate::notify_helper (this=0x930ed40,
receiver=0x93ec180, e=0xbf94625c) at kernel/qapplication.cpp:4298
#21 0xb591aba5 in QApplication::notify (this=0xbf946aec, receiver=0x93ec180,
e=0xbf94625c) at kernel/qapplication.cpp:3863
#22 0xb6936c68 in KApplication::notify (this=0xbf946aec, receiver=0x93ec180,
event=0xbf94625c) at
/home/kde-devel/kde/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:302
#23 0xb56325ed in QCoreApplication::notifyInternal (this=0xbf946aec,
receiver=0x93ec180, event=0xbf94625c) at kernel/qcoreapplication.cpp:704
#24 0xb591f2e9 in QCoreApplication::sendSpontaneousEvent (receiver=0x93ec180,
event=0xbf94625c) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#25 0xb59191bf in QApplicationPrivate::sendMouseEvent (receiver=0x93ec180,
event=0xbf94625c, alienWidget=0x0, nativeWidget=0x93ec180,
buttonDown=0xb640c958, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2961
#26 0xb59be52a in QETWidget::translateMouseEvent (this=0x93ec180,
event=0xbf946780) at kernel/qapplication_x11.cpp:4368
#27 0xb59bb16a in QApplication::x11ProcessEvent (this=0xbf946aec,
event=0xbf946780) at kernel/qapplication_x11.cpp:3379
#28 0xb59f1769 in x11EventSourceDispatch (s=0x9311d40, callback=0,
user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#29 0xb3f14378 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0xb3f17bf0 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#31 0xb3f17d23 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0xb5669f74 in QEventDispatcherGlib::processEvents (this=0x92cecf0,
flags=...) at kernel/qeventdispatcher_glib.cpp:412
#33 0xb59f1d9e in QGuiEventDispatcherGlib::processEvents (this=0x92cecf0,
flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0xb562f9c7 in QEventLoop::processEvents (this=0xbf946a5c, flags=...) at
kernel/qeventloop.cpp:149
#35 0xb562fb0c in QEventLoop::exec (this=0xbf946a5c, flags=...) at
kernel/qeventloop.cpp:201
#36 0xb5632cc9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#37 0xb5919e76 in QApplication::exec () at kernel/qapplication.cpp:3577
#38 0x0805cfa4 in main (argc=1, argv=0xbf946c14) at
/home/kde-devel/kde/src/KDE/kdepim/knotes/main.cpp:69

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