Bug 299237

Summary: plasma (clock-widget) crash on locale/time-format change
Product: [Plasma] plasma4 Reporter: Rex Dieter <rdieter>
Component: widget-clockAssignee: Lukáš Tinkl <lukas>
Status: RESOLVED FIXED    
Severity: crash CC: 4t34jwy7qk, administrador, annma, basu123ra, beamesleach, bugzilla, cfeck, dr.dabzse, gbsikh, geophil3, helio.loureiro, ismo.puustinen, jreznik, jvanzeeland, kde, kde, kriemskrams2, loic.grobol, lukas, nheghathivhistha, nichope, ri.chiriac, saulmartinanotero18, simonandric5, smcrossman, soldater-der-erdbefohlenen, Sroka.Steven, theunfor, vspb, xavier.besnard, ytsedragyn
Priority: HI    
Version: 4.8.90 (beta2)   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=302106
Latest Commit: Version Fixed In: 4.9
Attachments: New crash information added by DrKonqi
New crash information added by DrKonqi
tentative patch
New crash information added by DrKonqi
New crash information added by DrKonqi
New crash information added by DrKonqi
New crash information added by DrKonqi
New crash information added by DrKonqi

Description Rex Dieter 2012-05-02 13:49:54 UTC
Application: plasma-desktop (0.4)
KDE Platform Version: 4.8.3 (4.8.3)
Qt Version: 4.8.1
Operating System: Linux 3.3.4-1.fc17.x86_64 x86_64
Distribution: "Fedora release 17 (Beefy Miracle)"

-- Information about the crash:
Just updated to 4.8.3 and attempted to change time format in 
systemsettings->Locale->Country/Region & Language ->Date&Time

confirmed this does not happen using 4.8.2

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f17ea08a880 (LWP 3146))]

Thread 5 (Thread 0x7f17d54da700 (LWP 3147)):
#0  0x00000034a52e8e9f in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000003d16847984 in g_main_context_poll (n_fds=2, fds=0x7f17d0002bb0, timeout=-1, context=0x7f17d00009a0, priority=<optimized out>) at gmain.c:3417
#2  g_main_context_iterate (context=context@entry=0x7f17d00009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at gmain.c:3118
#3  0x0000003d16847aa4 in g_main_context_iteration (context=0x7f17d00009a0, may_block=1) at gmain.c:3184
#4  0x00000031cdda39e6 in QEventDispatcherGlib::processEvents (this=0x7f17d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00000031cdd7495f in QEventLoop::processEvents (this=this@entry=0x7f17d54d9cf0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00000031cdd74be8 in QEventLoop::exec (this=0x7f17d54d9cf0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00000031cdc785a0 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00000031cdd553df in QInotifyFileSystemWatcherEngine::run (this=0x2a2ef60) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00000031cdc7b53b in QThreadPrivate::start (arg=0x2a2ef60) at thread/qthread_unix.cpp:298
#10 0x00000034a5e07d14 in start_thread (arg=0x7f17d54da700) at pthread_create.c:309
#11 0x00000034a52f194d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 4 (Thread 0x7f17cffff700 (LWP 3148)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:166
#1  0x00000031d6184ab7 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x31d6491980) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00000031d6184ae9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00000034a5e07d14 in start_thread (arg=0x7f17cffff700) at pthread_create.c:309
#4  0x00000034a52f194d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 3 (Thread 0x7f17cb64a700 (LWP 3149)):
#0  0x00000034a52eacb3 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00000031cdd54a12 in QProcessManager::run (this=0x31ce0cb6c0) at io/qprocess_unix.cpp:245
#2  0x00000031cdc7b53b in QThreadPrivate::start (arg=0x31ce0cb6c0) at thread/qthread_unix.cpp:298
#3  0x00000034a5e07d14 in start_thread (arg=0x7f17cb64a700) at pthread_create.c:309
#4  0x00000034a52f194d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7f17ca21e700 (LWP 3158)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:218
#1  0x00000031cdc7b997 in wait (time=30000, this=0x3997a10) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x39976e8, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00000031cdc6f2bf in QThreadPoolThread::run (this=0x3996430) at concurrent/qthreadpool.cpp:141
#4  0x00000031cdc7b53b in QThreadPrivate::start (arg=0x3996430) at thread/qthread_unix.cpp:298
#5  0x00000034a5e07d14 in start_thread (arg=0x7f17ca21e700) at pthread_create.c:309
#6  0x00000034a52f194d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f17ea08a880 (LWP 3146)):
[KCrash Handler]
#6  0x0000000001fdbcd0 in ?? ()
#7  0x00007f17de1da25b in Clock::paintInterface (this=0x2528d50, p=0x7fff5dbc0410, option=<optimized out>, contentsRect=...) at /usr/src/debug/kde-workspace-4.8.3/plasma/generic/applets/digital-clock/clock.cpp:476
#8  0x0000003efeb0e14d in Plasma::Applet::paint (this=0x2528d50, painter=0x7fff5dbc0410, option=0x2115c78, widget=0x0) at /usr/src/debug/kdelibs-4.8.3/plasma/applet.cpp:1466
#9  0x0000003ef13a86a9 in _q_paintItem (item=item@entry=0x2528d60, painter=painter@entry=0x7fff5dbc0410, option=option@entry=0x2115c78, widget=widget@entry=0x0, useWindowOpacity=useWindowOpacity@entry=false, painterStateProtection=painterStateProtection@entry=true) at graphicsview/qgraphicsscene.cpp:4335
#10 0x0000003ef13a89a2 in _q_paintIntoCache (pix=pix@entry=0x7fff5dbc06f0, item=item@entry=0x2528d60, pixmapExposed=..., itemToPixmap=..., renderHints=..., option=option@entry=0x2115c78, painterStateProtection=painterStateProtection@entry=true) at graphicsview/qgraphicsscene.cpp:4373
#11 0x0000003ef13bca86 in QGraphicsScenePrivate::drawItemHelper (this=this@entry=0x2115a50, item=item@entry=0x2528d60, painter=painter@entry=0x7fff5dbc1500, option=option@entry=0x2115c78, widget=widget@entry=0x308d6b0, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4694
#12 0x0000003ef13bdae8 in QGraphicsScenePrivate::draw (this=this@entry=0x2115a50, item=item@entry=0x2528d60, painter=painter@entry=0x7fff5dbc1500, viewTransform=viewTransform@entry=0x7fff5dbc1690, transformPtr=transformPtr@entry=0x7fff5dbc0ce0, exposedRegion=exposedRegion@entry=0x28768c8, widget=0x308d6b0, opacity=opacity@entry=1, effectTransform=effectTransform@entry=0x0, wasDirtyParentSceneTransform=wasDirtyParentSceneTransform@entry=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4966
#13 0x0000003ef13be1a5 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x2115a50, item=0x2528d60, painter=0x7fff5dbc1500, viewTransform=0x7fff5dbc1690, exposedRegion=0x28768c8, widget=0x308d6b0, parentOpacity=<optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4857
#14 0x0000003ef13bd675 in QGraphicsScenePrivate::draw (this=this@entry=0x2115a50, item=item@entry=0x21a2ca0, painter=painter@entry=0x7fff5dbc1500, viewTransform=viewTransform@entry=0x7fff5dbc1690, transformPtr=transformPtr@entry=0x7fff5dbc11a0, exposedRegion=exposedRegion@entry=0x28768c8, widget=0x308d6b0, opacity=opacity@entry=1, effectTransform=effectTransform@entry=0x0, wasDirtyParentSceneTransform=wasDirtyParentSceneTransform@entry=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4996
#15 0x0000003ef13be1a5 in QGraphicsScenePrivate::drawSubtreeRecursive (this=this@entry=0x2115a50, item=0x21a2ca0, painter=painter@entry=0x7fff5dbc1500, viewTransform=viewTransform@entry=0x7fff5dbc1690, exposedRegion=exposedRegion@entry=0x28768c8, widget=widget@entry=0x308d6b0, parentOpacity=parentOpacity@entry=1, effectTransform=effectTransform@entry=0x0) at graphicsview/qgraphicsscene.cpp:4857
#16 0x0000003ef13bec7e in QGraphicsScenePrivate::drawItems (this=0x2115a50, painter=0x7fff5dbc1500, viewTransform=0x7fff5dbc1690, exposedRegion=0x28768c8, widget=0x308d6b0) at graphicsview/qgraphicsscene.cpp:4739
#17 0x0000003ef13dadf8 in QGraphicsView::paintEvent (this=0x36d1220, event=<optimized out>) at graphicsview/qgraphicsview.cpp:3471
#18 0x0000003ef0e19cb2 in QWidget::event (this=0x36d1220, event=0x7fff5dbc2150) at kernel/qwidget.cpp:8508
#19 0x0000003ef11c3a66 in QFrame::event (this=0x36d1220, e=0x7fff5dbc2150) at widgets/qframe.cpp:557
#20 0x0000003ef13dbf2b in QGraphicsView::viewportEvent (this=0x36d1220, event=0x7fff5dbc2150) at graphicsview/qgraphicsview.cpp:2866
#21 0x00000031cdd75ac6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x308d6b0, event=0x7fff5dbc2150) at kernel/qcoreapplication.cpp:986
#22 0x0000003ef0dca44c in QApplicationPrivate::notify_helper (this=this@entry=0x1fe4100, receiver=receiver@entry=0x308d6b0, e=e@entry=0x7fff5dbc2150) at kernel/qapplication.cpp:4550
#23 0x0000003ef0dce9aa in QApplication::notify (this=0x1f9dbd0, receiver=0x308d6b0, e=0x7fff5dbc2150) at kernel/qapplication.cpp:4415
#24 0x0000003ef3e45a56 in KApplication::notify (this=0x1f9dbd0, receiver=0x308d6b0, event=0x7fff5dbc2150) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#25 0x00000031cdd7595e in QCoreApplication::notifyInternal (this=0x1f9dbd0, receiver=0x308d6b0, event=0x7fff5dbc2150) at kernel/qcoreapplication.cpp:876
#26 0x0000003ef0e159c4 in sendSpontaneousEvent (event=0x7fff5dbc2150, receiver=0x308d6b0) at ../../src/corelib/kernel/qcoreapplication.h:234
#27 QWidgetPrivate::drawWidget (this=this@entry=0x36a8e50, pdev=pdev@entry=0x35dad30, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x308cef0) at kernel/qwidget.cpp:5585
#28 0x0000003ef0e164bf in QWidgetPrivate::paintSiblingsRecursive (this=0x2876440, pdev=0x35dad30, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x308cef0) at kernel/qwidget.cpp:5794
#29 0x0000003ef0e15555 in QWidgetPrivate::drawWidget (this=0x2876440, pdev=0x35dad30, rgn=..., offset=..., flags=<optimized out>, sharedPainter=0x0, backingStore=0x308cef0) at kernel/qwidget.cpp:5638
#30 0x0000003ef0fdee38 in QWidgetBackingStore::sync (this=0x308cef0) at painting/qbackingstore.cpp:1373
#31 0x0000003ef0e0a4f0 in QWidgetPrivate::syncBackingStore (this=this@entry=0x2876440) at kernel/qwidget.cpp:1891
#32 0x0000003ef0e1a2fc in QWidget::event (this=0x36d1220, event=0x48a1830) at kernel/qwidget.cpp:8655
#33 0x0000003ef11c3a66 in QFrame::event (this=0x36d1220, e=0x48a1830) at widgets/qframe.cpp:557
#34 0x0000003ef124359b in QAbstractScrollArea::event (this=0x36d1220, e=0x48a1830) at widgets/qabstractscrollarea.cpp:996
#35 0x0000003ef0dca47c in QApplicationPrivate::notify_helper (this=this@entry=0x1fe4100, receiver=receiver@entry=0x36d1220, e=e@entry=0x48a1830) at kernel/qapplication.cpp:4554
#36 0x0000003ef0dce9aa in QApplication::notify (this=0x1f9dbd0, receiver=0x36d1220, e=0x48a1830) at kernel/qapplication.cpp:4415
#37 0x0000003ef3e45a56 in KApplication::notify (this=0x1f9dbd0, receiver=0x36d1220, event=0x48a1830) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#38 0x00000031cdd7595e in QCoreApplication::notifyInternal (this=0x1f9dbd0, receiver=receiver@entry=0x36d1220, event=event@entry=0x48a1830) at kernel/qcoreapplication.cpp:876
#39 0x00000031cdd79401 in sendEvent (event=0x48a1830, receiver=0x36d1220) at kernel/qcoreapplication.h:231
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=0x36d1220, event_type=77, data=0x1f4b6e0) at kernel/qcoreapplication.cpp:1500
#41 0x0000003ef13b7bb2 in dispatchPendingUpdateRequests (this=0x2876440) at ../../src/gui/graphicsview/qgraphicsview_p.h:200
#42 QGraphicsScenePrivate::_q_processDirtyItems (this=0x2115a50) at graphicsview/qgraphicsscene.cpp:515
#43 0x0000003ef13b7d69 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at .moc/release-shared/moc_qgraphicsscene.cpp:106
#44 QGraphicsScene::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/release-shared/moc_qgraphicsscene.cpp:85
#45 0x00000031cdd8a1ee in QObject::event (this=0x1fdbeb0, e=<optimized out>) at kernel/qobject.cpp:1195
#46 0x0000003ef13c2774 in QGraphicsScene::event (this=0x1fdbeb0, event=0x3331180) at graphicsview/qgraphicsscene.cpp:3565
#47 0x0000003ef0dca47c in QApplicationPrivate::notify_helper (this=this@entry=0x1fe4100, receiver=receiver@entry=0x1fdbeb0, e=e@entry=0x3331180) at kernel/qapplication.cpp:4554
#48 0x0000003ef0dce9aa in QApplication::notify (this=0x1f9dbd0, receiver=0x1fdbeb0, e=0x3331180) at kernel/qapplication.cpp:4415
#49 0x0000003ef3e45a56 in KApplication::notify (this=0x1f9dbd0, receiver=0x1fdbeb0, event=0x3331180) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#50 0x00000031cdd7595e in QCoreApplication::notifyInternal (this=0x1f9dbd0, receiver=receiver@entry=0x1fdbeb0, event=event@entry=0x3331180) at kernel/qcoreapplication.cpp:876
#51 0x00000031cdd79401 in sendEvent (event=0x3331180, receiver=0x1fdbeb0) at kernel/qcoreapplication.h:231
#52 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1f4b6e0) at kernel/qcoreapplication.cpp:1500
#53 0x00000031cdda3853 in sendPostedEvents () at kernel/qcoreapplication.h:236
#54 postEventSourceDispatch (s=s@entry=0x1fe3b80) at kernel/qeventdispatcher_glib.cpp:279
#55 0x0000003d168475cc in g_main_dispatch (context=0x1fe5700) at gmain.c:2515
#56 g_main_context_dispatch (context=context@entry=0x1fe5700) at gmain.c:3052
#57 0x0000003d168479e8 in g_main_context_iterate (context=context@entry=0x1fe5700, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at gmain.c:3123
#58 0x0000003d16847aa4 in g_main_context_iteration (context=0x1fe5700, may_block=1) at gmain.c:3184
#59 0x00000031cdda39e6 in QEventDispatcherGlib::processEvents (this=0x1f4cba0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#60 0x0000003ef0e6a41e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#61 0x00000031cdd7495f in QEventLoop::processEvents (this=this@entry=0x7fff5dbc3b50, flags=...) at kernel/qeventloop.cpp:149
#62 0x00000031cdd74be8 in QEventLoop::exec (this=0x7fff5dbc3b50, flags=...) at kernel/qeventloop.cpp:204
#63 0x00000031cdd79718 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#64 0x0000003efcc41105 in kdemain (argc=1, argv=0x7fff5dbc3e48) at /usr/src/debug/kde-workspace-4.8.3/plasma/desktop/shell/main.cpp:120
#65 0x00000034a5221735 in __libc_start_main (main=0x4008b0 <main(int, char**)>, argc=1, ubp_av=0x7fff5dbc3e48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff5dbc3e38) at libc-start.c:226
#66 0x00000000004008e1 in _start ()

Possible duplicates by query: bug 284131, bug 283688, bug 280792, bug 276505, bug 276402.

Reported using DrKonqi
Comment 1 Rex Dieter 2012-05-02 13:52:56 UTC
triaging to plasma/widget-clock , though this code seems to have not been touched in awhile,
kde-workspace/plasma/generic/applets/digital-clock/clock.cpp:

        //Create the localized date string if needed
        if (m_dateStyle) {
            // JPL This needs a complete rewrite for l10n issues
            KLocale tmpLocale(*KGlobal::locale());
            tmpLocale.setCalendar(calendar()->calendarType());

boom, so it may be elsewhere.
Comment 2 Jaroslav Reznik 2012-05-02 14:17:50 UTC
Created attachment 70808 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.3 (4.8.3) using Qt 4.8.1

- What I was doing when the application crashed:
Changed Date & Time format in Country/Region and Language KCM.

-- Backtrace (Reduced):
#7  0x00007f7a2aec09cc in Plasma::CalendarTable::setDate (this=0x2c3d470, newDate=...) at /usr/src/debug/kde-workspace-4.8.3/libs/plasmaclock/calendartable.cpp:492
#8  0x00007f7a2aebd6b1 in Plasma::Calendar::setDate (this=0x2c37370, toDate=...) at /usr/src/debug/kde-workspace-4.8.3/libs/plasmaclock/calendar.cpp:279
#9  0x00007f7a2aeb6bd3 in ClockApplet::updateClockApplet (this=0x2bdaea0, data=...) at /usr/src/debug/kde-workspace-4.8.3/libs/plasmaclock/clockapplet.cpp:342
#10 0x00007f7a2b0e19fa in Clock::dataUpdated (this=0x2bdaea0, source=..., data=...) at /usr/src/debug/kde-workspace-4.8.3/plasma/generic/applets/digital-clock/clock.cpp:257
#11 0x00007f7a2b0e1dbd in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at /usr/src/debug/kde-workspace-4.8.3/x86_64-redhat-linux-gnu/plasma/generic/applets/digital-clock/clock.moc:63
Comment 3 Jaroslav Reznik 2012-05-02 15:25:49 UTC
Just a note - the Data & Time combobox has a duplicate entries after selecting new one. I talked to Lukas, he asked me to add here as comment (so no new bug report).
Comment 4 Lukáš Tinkl 2012-05-02 15:59:00 UTC
Working on it
Comment 5 Lukáš Tinkl 2012-05-02 16:24:14 UTC
Git commit c0bd761c5d1663995f028d05ac317e492b90ea48 by Lukas Tinkl.
Committed on 02/05/2012 at 18:21.
Pushed by lukas into branch 'KDE/4.8'.

re-read the calendar on locale changes, fixes crash report in #299237
and a dozen of dupes

M  +13   -0    libs/plasmaclock/calendartable.cpp
M  +1    -0    libs/plasmaclock/calendartable.h

http://commits.kde.org/kde-workspace/c0bd761c5d1663995f028d05ac317e492b90ea48
Comment 6 Lukáš Tinkl 2012-05-02 16:26:07 UTC
Git commit 88a52f1387dfed731c5eae5a95281f33d7a07d72 by Lukas Tinkl.
Committed on 02/05/2012 at 18:21.
Pushed by lukas into branch 'master'.

re-read the calendar on locale changes, fixes crash report in #299237
and a dozen of dupes

M  +13   -0    libs/plasmaclock/calendartable.cpp
M  +1    -0    libs/plasmaclock/calendartable.h

http://commits.kde.org/kde-workspace/88a52f1387dfed731c5eae5a95281f33d7a07d72
Comment 7 Thijs 2012-05-30 20:32:09 UTC
*** Bug 300888 has been marked as a duplicate of this bug. ***
Comment 8 Jekyll Wu 2012-05-31 12:33:23 UTC
*** Bug 300910 has been marked as a duplicate of this bug. ***
Comment 9 Myriam Schweingruber 2012-05-31 23:27:09 UTC
*** Bug 300970 has been marked as a duplicate of this bug. ***
Comment 10 Anne-Marie Mahfouf 2012-06-10 07:40:04 UTC
*** Bug 301555 has been marked as a duplicate of this bug. ***
Comment 11 Anne-Marie Mahfouf 2012-06-10 07:43:14 UTC
Reopening, this is not fixed Lucas. See comment #10 to reproduce
My backtrace:


Thread 1 (Thread 0xb544f710 (LWP 2476)):
[KCrash Handler]
#6  0x00000026 in ?? ()
#7  0xb0b1c9f3 in Plasma::CalendarTable::setDate (this=0x85916a8, newDate=...) at /usr/local/kde-master-src/kde-workspace/libs/plasmaclock/calendartable.cpp:495
#8  0xb0b19c84 in Plasma::Calendar::setDate (this=0x838f538, toDate=...) at /usr/local/kde-master-src/kde-workspace/libs/plasmaclock/calendar.cpp:279
#9  0xb0b1039b in ClockApplet::updateClockApplet (this=0x82d9e50, data=...) at /usr/local/kde-master-src/kde-workspace/libs/plasmaclock/clockapplet.cpp:342
#10 0xb08f591d in Clock::dataUpdated (this=0x82d9e50, source=..., data=...) at /usr/local/kde-master-src/kde-workspace/plasma/generic/applets/digital-clock/clock.cpp:257
#11 0xb08f8b5f in Clock::qt_static_metacall (_o=0x82d9e50, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbf849d34) at /usr/local/kde-master-src/kde-workspace/build/plasma/generic/applets/digital-clock/clock.moc:64
#12 0xb6bd4198 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/local/master/qt/lib/libQtCore.so.4
#13 0xb4a5399b in Plasma::SignalRelay::dataUpdated (this=0x863b190, _t1=..., _t2=...) at /usr/local/kde-master-src/kdelibs/build/plasma/datacontainer_p.moc:99
#14 0xb4a5377c in Plasma::SignalRelay::timerEvent (this=0x863b190, event=0xbf84a24c) at /usr/local/kde-master-src/kdelibs/plasma/private/datacontainer_p.cpp:157
#15 0xb6bd3514 in QObject::event(QEvent*) () from /usr/local/master/qt/lib/libQtCore.so.4
#16 0xb6088e04 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/master/qt/lib/libQtGui.so.4
#17 0xb609184e in QApplication::notify(QObject*, QEvent*) () from /usr/local/master/qt/lib/libQtGui.so.4
#18 0xb74238e6 in KApplication::notify (this=0x80f1708, receiver=0x863b190, event=0xbf84a24c) at /usr/local/kde-master-src/kdelibs/kdeui/kernel/kapplication.cpp:311
#19 0xb6bbdb6b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/local/master/qt/lib/libQtCore.so.4
#20 0xb6bf1d26 in ?? () from /usr/local/master/qt/lib/libQtCore.so.4
#21 0xb6beea8a in ?? () from /usr/local/master/qt/lib/libQtCore.so.4
#22 0xb5648e2f in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#23 0xb5649560 in ?? () from /usr/lib/libglib-2.0.so.0
#24 0xb56497fa in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#25 0xb6bef22c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/master/qt/lib/libQtCore.so.4
#26 0xb613c895 in ?? () from /usr/local/master/qt/lib/libQtGui.so.4
#27 0xb6bbca89 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/master/qt/lib/libQtCore.so.4
#28 0xb6bbcd3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/master/qt/lib/libQtCore.so.4
#29 0xb6bc197f in QCoreApplication::exec() () from /usr/local/master/qt/lib/libQtCore.so.4
#30 0xb6086c17 in QApplication::exec() () from /usr/local/master/qt/lib/libQtGui.so.4
#31 0xb1fa6c7e in kdemain (argc=1, argv=0x80a2418) at /usr/local/kde-master-src/kde-workspace/plasma/desktop/shell/main.cpp:120
#32 0x0804de1e in launch (argc=1, _name=0x80a375c "/usr/local/master/bin/plasma-desktop", args=0x80a3781 "", cwd=0x0, envc=0, envs=0x80a3785 "", reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x8053649 "0") at /usr/local/kde-master-src/kdelibs/kinit/kinit.cpp:734
#33 0x0804ee83 in handle_launcher_request (sock=8, who=0x80538e4 "launcher") at /usr/local/kde-master-src/kdelibs/kinit/kinit.cpp:1226
#34 0x0804f5ff in handle_requests (waitForPid=0) at /usr/local/kde-master-src/kdelibs/kinit/kinit.cpp:1419
#35 0x08050ef4 in main (argc=4, argv=0xbf84acd4, envp=0xbf84ace8) at /usr/local/kde-master-src/kdelibs/kinit/kinit.cpp:1907
Comment 12 Anne-Marie Mahfouf 2012-06-10 07:48:36 UTC
*** Bug 301288 has been marked as a duplicate of this bug. ***
Comment 13 David Kredba 2012-06-10 09:32:09 UTC
Created attachment 71694 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.3 (4.8.3) using Qt 4.8.2

- What I was doing when the application crashed:

Switched locale to Czech without log off.

-- Backtrace (Reduced):
#7  0x00007fa5af4fb72c in Plasma::CalendarTable::setDate (this=0xf33280, newDate=...) at /var/tmp/portage/kde-base/libplasmaclock-4.8.3/work/libplasmaclock-4.8.3/libs/plasmaclock/calendartable.cpp:492
#8  0x00007fa5af4f84e1 in Plasma::Calendar::setDate (this=0xa51760, toDate=...) at /var/tmp/portage/kde-base/libplasmaclock-4.8.3/work/libplasmaclock-4.8.3/libs/plasmaclock/calendar.cpp:279
#9  0x00007fa5af4f1a03 in ClockApplet::updateClockApplet (this=0xee93c0, data=...) at /var/tmp/portage/kde-base/libplasmaclock-4.8.3/work/libplasmaclock-4.8.3/libs/plasmaclock/clockapplet.cpp:342
#10 0x00007fa5af7959ea in Clock::dataUpdated (this=0xee93c0, source=..., data=...) at /var/tmp/portage/kde-base/plasma-workspace-4.8.3/work/plasma-workspace-4.8.3/plasma/generic/applets/digital-clock/clock.cpp:257
#11 0x00007fa5af795dad in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at /var/tmp/portage/kde-base/plasma-workspace-4.8.3/work/plasma-workspace-4.8.3_build/plasma/generic/applets/digital-clock/clock.moc:64
Comment 14 Anne-Marie Mahfouf 2012-06-10 20:34:28 UTC
*** Bug 301596 has been marked as a duplicate of this bug. ***
Comment 15 Anne-Marie Mahfouf 2012-06-11 08:58:46 UTC
*** Bug 301623 has been marked as a duplicate of this bug. ***
Comment 16 Lukáš Tinkl 2012-06-11 13:16:40 UTC
Looks like a different crash to me then... I'll look into it
Comment 17 Jekyll Wu 2012-06-12 11:13:49 UTC
*** Bug 301720 has been marked as a duplicate of this bug. ***
Comment 18 Anne-Marie Mahfouf 2012-06-12 18:42:30 UTC
*** Bug 301761 has been marked as a duplicate of this bug. ***
Comment 19 Jekyll Wu 2012-06-14 07:58:30 UTC
*** Bug 301882 has been marked as a duplicate of this bug. ***
Comment 20 Janek Bevendorff 2012-06-16 12:33:39 UTC
*** Bug 301986 has been marked as a duplicate of this bug. ***
Comment 21 Lukáš Tinkl 2012-06-18 08:58:44 UTC
I can no longer reproduce with 4.8.4, all the duplicated backtraces indicate 4.8.3 so far
Comment 22 Jekyll Wu 2012-06-18 10:34:33 UTC
*** Bug 302114 has been marked as a duplicate of this bug. ***
Comment 23 Anne-Marie Mahfouf 2012-06-19 13:02:05 UTC
Lukas I reproduce exactly in 4.9 beta2 by following the steps indicated by Rex 

#6  0x00000001 in ?? ()
#7  0xb0a02d1f in Plasma::CalendarTable::setDate (this=0x85b3820, newDate=...) at /usr/local/kde-master-src/kde-workspace/libs/plasmaclock/calendartable.cpp:495
#8  0xb09ffe30 in Plasma::Calendar::setDate (this=0x854a0d0, toDate=...) at /usr/local/kde-master-src/kde-workspace/libs/plasmaclock/calendar.cpp:281
#9  0xb09f653b in ClockApplet::updateClockApplet (this=0x847eba8, data=...) at /usr/local/kde-master-src/kde-workspace/libs/plasmaclock/clockapplet.cpp:342
#10 0xb079b91d in Clock::dataUpdated (this=0x847eba8, source=..., data=...) at /usr/local/kde-master-src/kde-workspace/plasma/generic/applets/digital-clock/clock.cpp:257
#11 0xb079eb5f in Clock::qt_static_metacall (_o=0x847eba8, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbff0f9b4) at /usr/local/kde-master-src/kde-workspace/build/plasma/generic/applets/digital-clock/clock.moc:64
#12 0xb6c75198 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/local/master/qt/lib/libQtCore.so.4
#13 0xb4af499b in Plasma::SignalRelay::dataUpdated (this=0x85eff68, _t1=..., _t2=...) at /usr/local/kde-master-src/kdelibs/build/plasma/datacontainer_p.moc:99
#14 0xb4af477c in Plasma::SignalRelay::timerEvent (this=0x85eff68, event=0xbff0fecc) at /usr/local/kde-master-src/kdelibs/plasma/private/datacontainer_p.cpp:157
#15 0xb6c74514 in QObject::event(QEvent*) () from /usr/local/master/qt/lib/libQtCore.so.4
#16 0xb6129e04 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/master/qt/lib/libQtGui.so.4
#17 0xb613284e in QApplication::notify(QObject*, QEvent*) () from /usr/local/master/qt/lib/libQtGui.so.4
#18 0xb74c48e6 in KApplication::notify (this=0x80f1af8, receiver=0x85eff68, event=0xbff0fecc) at /usr/local/kde-master-src/kdelibs/kdeui/kernel/kapplication.cpp:311
Comment 24 Lukáš Tinkl 2012-06-19 13:14:37 UTC
Created attachment 71938 [details]
tentative patch

Could you please try the attached patch if it fixes the problem for you?
Comment 25 Anne-Marie Mahfouf 2012-06-19 14:03:25 UTC
Applied the patch still the same crash 
#7  0xb071fd2e in Plasma::CalendarTable::setDate (this=0x85e6600, newDate=...) at /usr/local/kde-master-src/kde-workspace/libs/plasmaclock/calendartable.cpp:495
Comment 26 Elektrotechniker 2012-06-19 17:46:12 UTC
Created attachment 71953 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.3 (4.8.3) using Qt 4.8.1

- What I was doing when the application crashed: Variable "Long date format:" set to "WEEKDAY DD MONTH MM YYYY" and then click on Germany-Button "Anwenden".

- Custom settings of the application: Variable "Long date format:" = "WEEKDAY DD MONTH MM YYYY"

-- Backtrace (Reduced):
#7  0x00007f894b5ca230 in Clock::paintInterface (this=0x11dcf40, p=0x7fff0d122db0, contentsRect=..., option=<optimized out>) at ../../../../../plasma/generic/applets/digital-clock/clock.cpp:476
#8  0x00007f8967271146 in Plasma::Applet::paint (this=0x11dcf40, painter=0x7fff0d122db0, option=0xe33478, widget=0x17a7b90) at ../../plasma/applet.cpp:1466
#9  0x00007f89642b797d in _q_paintItem (item=<optimized out>, painter=0x7fff0d122db0, option=0xe33478, widget=0x17a7b90, useWindowOpacity=<optimized out>, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4335
#10 0x00007f89642ceee4 in QGraphicsScenePrivate::drawItemHelper (this=0xe33250, item=0x11dcf50, painter=0x7fff0d122db0, option=0xe33478, widget=0x17a7b90, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4431
#11 0x00007f89642d134b in QGraphicsScenePrivate::draw (this=0xe33250, item=0x11dcf50, painter=0x7fff0d122db0, viewTransform=0x7fff0d122a80, transformPtr=0x7fff0d121f00, exposedRegion=0x1b85f58, widget=0x17a7b90, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4966
Comment 27 Jekyll Wu 2012-06-20 16:13:20 UTC
*** Bug 302241 has been marked as a duplicate of this bug. ***
Comment 28 Steven Sroka 2012-06-20 21:46:44 UTC
Created attachment 72003 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.90 (4.8.90) using Qt 4.8.2

- What I was doing when the application crashed:

This happens even with KDE 4.9.90.
Reproducible always.
System Settings->Locale->Languages->Set Preferred Languages to some other language->Click Apply->Let KDE configure itself->Enjoy the crash :)

Plasma also restarts.

-- Backtrace (Reduced):
#7  0x00007f231d696a5c in Plasma::CalendarTable::setDate (this=0x1c76ca0, newDate=...) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.8.90/libs/plasmaclock/calendartable.cpp:495
#8  0x00007f231d693721 in Plasma::Calendar::setDate (this=0x1c90bd0, toDate=...) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.8.90/libs/plasmaclock/calendar.cpp:279
#9  0x00007f231d68cc43 in ClockApplet::updateClockApplet (this=0x1bd0330, data=...) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.8.90/libs/plasmaclock/clockapplet.cpp:342
#10 0x00007f231d8b779a in Clock::dataUpdated (this=0x1bd0330, source=<optimized out>, data=...) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.8.90/plasma/generic/applets/digital-clock/clock.cpp:257
#11 0x00007f231d8b7b5d in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at /chakra/desktop-unstable/kde-workspace/src/kde-workspace-4.8.90/plasma/generic/applets/digital-clock/clock.moc:64
Comment 29 Steven Sroka 2012-06-20 21:51:14 UTC
I meant I could reproduce this even on KDE 4.8.90.
Comment 30 Xavier Besnard 2012-06-24 07:57:23 UTC
Created attachment 72087 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.90 (4.8.90) using Qt 4.8.2

- What I was doing when the application crashed:

Trying to install French language

Configuration: Kubuntu Quantal 12.10 alpha 1 updated dayly. Includes KDE 4.8.9

-- Backtrace (Reduced):
#8  0xaefa1daf in Plasma::CalendarTable::setDate (this=0x8bc9a50, newDate=...) at ../../../libs/plasmaclock/calendartable.cpp:495
#9  0xaef9df14 in Plasma::Calendar::setDate (this=0x8bc99f0, toDate=...) at ../../../libs/plasmaclock/calendar.cpp:279
#10 0xaef96b90 in ClockApplet::updateClockApplet (this=0x8b049e8, data=...) at ../../../libs/plasmaclock/clockapplet.cpp:342
#11 0xaefe51b6 in Clock::dataUpdated (this=this@entry=0x8b049e8, source=..., data=...) at ../../../../../plasma/generic/applets/digital-clock/clock.cpp:257
#12 0xaefe5606 in qt_static_metacall (_a=0xbfc48c44, _id=0, _o=0x8b049e8, _c=<optimized out>) at ./clock.moc:64
Comment 31 Jekyll Wu 2012-06-26 11:51:47 UTC
*** Bug 302406 has been marked as a duplicate of this bug. ***
Comment 32 Jekyll Wu 2012-06-26 11:52:01 UTC
*** Bug 302548 has been marked as a duplicate of this bug. ***
Comment 33 Jekyll Wu 2012-06-28 11:17:55 UTC
*** Bug 302687 has been marked as a duplicate of this bug. ***
Comment 34 Jekyll Wu 2012-06-28 16:37:53 UTC
*** Bug 302706 has been marked as a duplicate of this bug. ***
Comment 35 wintonian 2012-07-01 01:30:52 UTC
Created attachment 72248 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.3 (4.8.3) using Qt 4.8.1

- What I was doing when the application crashed:

Changing the preferd language from Americain en to British en, these wre allready installed and I was just swithing them.

- Unusual behavior I noticed:

Plasma crash i.e. flickering and messed up graphics for 3 - 4 secs while plasma restarted.

-- Backtrace (Reduced):
#8  0xad4880cf in Plasma::CalendarTable::setDate(QDate const&) () from /usr/lib/libplasmaclock.so.4abi3
#9  0xad483874 in Plasma::Calendar::setDate(QDate const&) () from /usr/lib/libplasmaclock.so.4abi3
#10 0xad47a4f8 in ClockApplet::updateClockApplet(QHash<QString, QVariant> const&) () from /usr/lib/libplasmaclock.so.4abi3
[...]
#14 0xb738169d in Plasma::SignalRelay::dataUpdated (this=0x8a8d6a0, _t1=..., _t2=...) at ./datacontainer_p.moc:99
#15 0xb738182f in timerEvent (this=0x8a8d6a0, event=<optimized out>) at ../../plasma/private/datacontainer_p.cpp:157
Comment 36 Simon Andric 2012-07-03 23:42:49 UTC
Created attachment 72316 [details]
New crash information added by DrKonqi

plasma-desktop (0.4) on KDE Platform 4.8.90 (4.8.90) using Qt 4.8.2

- What I was doing when the application crashed:

change a random setting in system settings and clicked apply.


ps. i use kubuntu 12.10, kde 4.8.90
the newest stuff

nice day
simon

-- Backtrace (Reduced):
#8  0xaee4fdaf in Plasma::CalendarTable::setDate (this=0xa5c23e0, newDate=...) at ../../../libs/plasmaclock/calendartable.cpp:495
#9  0xaee4bf14 in Plasma::Calendar::setDate (this=0xa5c26b8, toDate=...) at ../../../libs/plasmaclock/calendar.cpp:279
#10 0xaee44b90 in ClockApplet::updateClockApplet (this=0xa1542f0, data=...) at ../../../libs/plasmaclock/clockapplet.cpp:342
#11 0xaee9a1b6 in Clock::dataUpdated (this=this@entry=0xa1542f0, source=..., data=...) at ../../../../../plasma/generic/applets/digital-clock/clock.cpp:257
#12 0xaee9a606 in qt_static_metacall (_a=0xbf9700f4, _id=0, _o=0xa1542f0, _c=<optimized out>) at ./clock.moc:64
Comment 37 Jekyll Wu 2012-07-14 15:14:54 UTC
*** Bug 303526 has been marked as a duplicate of this bug. ***
Comment 38 Christoph Feck 2012-07-19 00:41:50 UTC
Is this bug still reproducible in the 4.9 RC versions? It looks like the commit for bug 302106 also fixed this one.
Comment 39 Janek Bevendorff 2012-07-19 09:14:43 UTC
I don't have any locale change crashes in 4.9rc2 anymore.
Comment 40 Xavier Besnard 2012-07-21 21:32:52 UTC
Hi, I tried the same operation, i.e changing time and time zone. But no 
crash with KDE 4.8.90.

My configuration is Kubuntu Quantal 12.10 alpha 2, updated dayly.


Le 19/07/2012 02:41, Christoph Feck a écrit :
> https://bugs.kde.org/show_bug.cgi?id=299237
>
> --- Comment #38 from Christoph Feck <christoph@maxiom.de> ---
> Is this bug still reproducible in the 4.9 RC versions? It looks like the commit
> for bug 302106 also fixed this one.
>
Comment 41 Jekyll Wu 2012-07-29 00:39:09 UTC
*** Bug 304208 has been marked as a duplicate of this bug. ***
Comment 42 Myriam Schweingruber 2012-08-06 01:27:15 UTC
*** Bug 302711 has been marked as a duplicate of this bug. ***
Comment 43 Jekyll Wu 2012-08-10 02:51:57 UTC
*** Bug 304882 has been marked as a duplicate of this bug. ***
Comment 44 Christoph Feck 2012-11-10 12:35:19 UTC
*** Bug 309839 has been marked as a duplicate of this bug. ***