KMainWindow unit test crash, caused by recent Oxygen commit

[Frank Reininghaus]

Hi,

I'm seeing a failure in kmainwindow_unittest:

http://my.cdash.org/testDetails.php?test=6516885&build=203056

The test crashes with the backtrace below. Sometimes, also kxmlgui_unittest 
crashes with that bt, but that's not 100% reproducible.

It seems that the failure is due to commit 2bc71422 in kde-workspace:

https://projects.kde.org/projects/kde/kdebase/kde-
workspace/repository/revisions/2bc71422e031879d218888b1b65fe774d23f5dfd

I don't know KMainWindow and KXmlGui well, so I can't say if they do anything 
wrong here, if the tests need to be fixed, or if Oxygen really is the culprit.

Best regards,
Frank

P.S.: The backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6664cea in QObject::installEventFilter (this=0x7fffffffcc80, 
obj=0x6af770) at kernel/qobject.cpp:2061
2061        if (d->threadData != obj->d_func()->threadData) {
(gdb) bt
#0  0x00007ffff6664cea in QObject::installEventFilter (this=0x7fffffffcc80, 
obj=0x6af770) at kernel/qobject.cpp:2061
#1  0x00007fffef61045a in Oxygen::SplitterFactory::registerWidget 
(this=0x696ce0, widget=0x7fffffffcc80)
    at /home/kde-devel/kde/src/KDE/kde-
workspace/kstyles/oxygen/oxygensplitterproxy.cpp:59
#2  0x00007fffef6124d6 in Oxygen::Style::polish (this=0x665b60, 
widget=0x7fffffffcc80) at /home/kde-devel/kde/src/KDE/kde-
workspace/kstyles/oxygen/oxygenstyle.cpp:211
#3  0x00007ffff5550fed in QWidget::event (this=0x7fffffffcc80, 
event=0x7fffffffcb00) at kernel/qwidget.cpp:8364
#4  0x00007ffff5a2b87e in QMainWindow::event (this=0x7fffffffcc80, 
event=0x7fffffffcb00) at widgets/qmainwindow.cpp:1480
#5  0x00007ffff79da24f in KMainWindow::event (this=0x7fffffffcc80, 
ev=0x7fffffffcb00) at /home/kde-
devel/kde/src/KDE/kdelibs/kdeui/widgets/kmainwindow.cpp:1100
#6  0x00007ffff54ea03e in QApplicationPrivate::notify_helper (this=0x62c9f0, 
receiver=0x7fffffffcc80, e=0x7fffffffcb00) at kernel/qapplication.cpp:4477
#7  0x00007ffff54e9d3e in QApplication::notify (this=0x7fffffffdab0, 
receiver=0x7fffffffcc80, e=0x7fffffffcb00) at kernel/qapplication.cpp:4442
#8  0x00007ffff664aa33 in QCoreApplication::notifyInternal 
(this=0x7fffffffdab0, receiver=0x7fffffffcc80, event=0x7fffffffcb00) at 
kernel/qcoreapplication.cpp:787
#9  0x00007ffff664e765 in QCoreApplication::sendEvent 
(receiver=0x7fffffffcc80, event=0x7fffffffcb00) at 
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#10 0x00007ffff5552a4c in QWidget::ensurePolished (this=0x7fffffffcc80) at 
kernel/qwidget.cpp:9615
#11 0x00007ffff554f3df in QWidget::setVisible (this=0x7fffffffcc80, 
visible=true) at kernel/qwidget.cpp:7630
#12 0x00000000004087c2 in QWidget::show (this=0x7fffffffcc80) at /home/kde-
devel/qt/include/QtGui/../../src/gui/kernel/qwidget.h:487
#13 0x000000000040743a in KMainWindow_UnitTest::testNameWithSpecialChars 
(this=0x7fffffffdaa0) at /home/kde-
devel/kde/src/KDE/kdelibs/kdeui/tests/kmainwindow_unittest.cpp:81
#14 0x00000000004064c9 in KMainWindow_UnitTest::qt_metacall 
(this=0x7fffffffdaa0, _c=QMetaObject::InvokeMetaMethod, _id=2, 
_a=0x7fffffffce30)
    at /home/kde-
devel/kde/build/KDE/kdelibs/kdeui/tests/kmainwindow_unittest.moc:86
#15 0x00007ffff6652ba7 in QMetaObject::metacall (object=0x7fffffffdaa0, 
cl=QMetaObject::InvokeMetaMethod, idx=6, argv=0x7fffffffce30) at 
kernel/qmetaobject.cpp:237
#16 0x00007ffff6655836 in QMetaMethod::invoke (this=0x7fffffffd310, 
object=0x7fffffffdaa0, connectionType=Qt::DirectConnection, returnValue=..., 
val0=..., val1=..., val2=..., 
    val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at 
kernel/qmetaobject.cpp:1597
#17 0x00007ffff6654ade in QMetaObject::invokeMethod (obj=0x7fffffffdaa0, 
member=0x7242b0 "testNameWithSpecialChars", type=Qt::DirectConnection, 
ret=..., val0=..., val1=..., val2=
    ..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) 
at kernel/qmetaobject.cpp:1151
#18 0x00007ffff7439544 in QMetaObject::invokeMethod (obj=0x7fffffffdaa0, 
member=0x7242b0 "testNameWithSpecialChars", type=Qt::DirectConnection, 
val0=..., val1=..., val2=..., val3=
    ..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at 
../../include/QtCore/../../src/corelib/kernel/qobjectdefs.h:410
#19 0x00007ffff74372ec in QTest::qInvokeTestMethodDataEntry (slot=0x7242b0 
"testNameWithSpecialChars") at qtestcase.cpp:1277
#20 0x00007ffff7437879 in QTest::qInvokeTestMethod (slotName=0x40a1b8 
"testNameWithSpecialChars()", data=0x0) at qtestcase.cpp:1385
#21 0x00007ffff7437f15 in QTest::qInvokeTestMethods 
(testObject=0x7fffffffdaa0) at qtestcase.cpp:1540
#22 0x00007ffff74383a4 in QTest::qExec (testObject=0x7fffffffdaa0, argc=1, 
argv=0x7fffffffdde8) at qtestcase.cpp:1749
#23 0x0000000000406c00 in main (argc=1, argv=0x7fffffffdde8) at /home/kde-
devel/kde/src/KDE/kdelibs/kdeui/tests/kmainwindow_unittest.cpp:30