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On Friday 08 September 2006 10:10, Andras Mantia wrote:
> and nobody did anything solving the
> problem until now, so if nobody has better idea, I would like to see
> our applications not crash, even if it's not the true fix...

I spent quite some time debugging this using gdb and valgrind, but I=20
give up now. Valgrind reports:

Quanta: focusW: [NewMainWindow pointer (0xb382ad8) to widget MainWindow,=20
geometry=3D800x600+0+39] topLevelWidget: [NewMainWindow pointer=20
(0xb382ad8) to widget MainWindow, geometry=3D800x600+0+39] x11Display:=20
0xace2ea8
=3D=3D30009=3D=3D
=3D=3D30009=3D=3D Invalid read of size 1
=3D=3D30009=3D=3D    at 0x8879680: QWidget::topLevelWidget() const=20
(qwidget.cpp:2359)
=3D=3D30009=3D=3D    by 0xE58BCB5: QXIMInputContext::setMicroFocus(int, int=
,=20
int, int, QFont*) (qximinputcontext_x11.cpp:758)
=3D=3D30009=3D=3D    by 0x87C89F3: QWidget::setMicroFocusHint(int, int, int=
,=20
int, bool, QFont*) (qwidget_x11.cpp:981)
=3D=3D30009=3D=3D    by 0xF5C7C82: TEWidget::setCursorPos(int, int)=20
(TEWidget.cpp:793)
=3D=3D30009=3D=3D    by 0xF5D8F79: TEmulation::showBulk() (TEmulation.cpp:4=
71)
=3D=3D30009=3D=3D    by 0xF5D9027: TEmulation::setConnect(bool)=20
(TEmulation.cpp:494)
=3D=3D30009=3D=3D    by 0xF5CF923: TEmuVt102::setConnect(bool)=20
(TEmuVt102.cpp:1195)
=3D=3D30009=3D=3D    by 0xF5BB692: TESession::setConnect(bool) (session.cpp=
:352)
=3D=3D30009=3D=3D    by 0xF5B18DD: konsolePart::newSession()=20
(konsole_part.cpp:1088)
=3D=3D30009=3D=3D    by 0xF5B193C: konsolePart::startProgram(QString const&=
,=20
QStrList const&) (konsole_part.cpp:1054)
=3D=3D30009=3D=3D    by 0xF5AE81E: konsolePart::showShellInDir(QString cons=
t&)=20
(konsole_part.cpp:1102)
=3D=3D30009=3D=3D    by 0xF5ADD22: konsolePart::showShell()=20
(konsole_part.cpp:1117)
=3D=3D30009=3D=3D    by 0xF5ADD4F: konsolePart::autoShowShell()=20
(konsole_part.cpp:212)
=3D=3D30009=3D=3D    by 0xF5B498B: konsolePart::qt_invoke(int, QUObject*)=20
(konsole_part.moc:334)
=3D=3D30009=3D=3D    by 0x884B7AB: QObject::activate_signal(QConnectionList=
*,=20
QUObject*) (qobject.cpp:2356)
=3D=3D30009=3D=3D    by 0x8B2D307: QSignal::signal(QVariant const&)=20
(moc_qsignal.cpp:100)
=3D=3D30009=3D=3D    by 0x88642B4: QSignal::activate() (qsignal.cpp:212)
=3D=3D30009=3D=3D    by 0x886A8D7: QSingleShotTimer::event(QEvent*)=20
(qtimer.cpp:286)
=3D=3D30009=3D=3D    by 0x87F4984: QApplication::internalNotify(QObject*,=20
QEvent*) (qapplication.cpp:2636)
=3D=3D30009=3D=3D    by 0x87F55B6: QApplication::notify(QObject*, QEvent*)=
=20
(qapplication.cpp:2359)
=3D=3D30009=3D=3D  Address 0x15403774 is not stack'd, malloc'd or (recently=
)=20
free'd
=3D=3D30009=3D=3D
=3D=3D30009=3D=3D Invalid read of size 8
=3D=3D30009=3D=3D    at 0x887968A: QWidget::topLevelWidget() const=20
(qobject.h:154)
=3D=3D30009=3D=3D    by 0xE58BCB5: QXIMInputContext::setMicroFocus(int, int=
,=20
int, int, QFont*) (qximinputcontext_x11.cpp:758)
=3D=3D30009=3D=3D    by 0x87C89F3: QWidget::setMicroFocusHint(int, int, int=
,=20
int, bool, QFont*) (qwidget_x11.cpp:981)
=3D=3D30009=3D=3D    by 0xF5C7C82: TEWidget::setCursorPos(int, int)=20
(TEWidget.cpp:793)
=3D=3D30009=3D=3D    by 0xF5D8F79: TEmulation::showBulk() (TEmulation.cpp:4=
71)
=3D=3D30009=3D=3D    by 0xF5D9027: TEmulation::setConnect(bool)=20
(TEmulation.cpp:494)
=3D=3D30009=3D=3D    by 0xF5CF923: TEmuVt102::setConnect(bool)=20
(TEmuVt102.cpp:1195)
=3D=3D30009=3D=3D    by 0xF5BB692: TESession::setConnect(bool) (session.cpp=
:352)
=3D=3D30009=3D=3D    by 0xF5B18DD: konsolePart::newSession()=20
(konsole_part.cpp:1088)
=3D=3D30009=3D=3D    by 0xF5B193C: konsolePart::startProgram(QString const&=
,=20
QStrList const&) (konsole_part.cpp:1054)
=3D=3D30009=3D=3D    by 0xF5AE81E: konsolePart::showShellInDir(QString cons=
t&)=20
(konsole_part.cpp:1102)
=3D=3D30009=3D=3D    by 0xF5ADD22: konsolePart::showShell()=20
(konsole_part.cpp:1117)
=3D=3D30009=3D=3D    by 0xF5ADD4F: konsolePart::autoShowShell()=20
(konsole_part.cpp:212)
=3D=3D30009=3D=3D    by 0xF5B498B: konsolePart::qt_invoke(int, QUObject*)=20
(konsole_part.moc:334)
=3D=3D30009=3D=3D    by 0x884B7AB: QObject::activate_signal(QConnectionList=
*,=20
QUObject*) (qobject.cpp:2356)
=3D=3D30009=3D=3D    by 0x8B2D307: QSignal::signal(QVariant const&)=20
(moc_qsignal.cpp:100)
=3D=3D30009=3D=3D    by 0x88642B4: QSignal::activate() (qsignal.cpp:212)
=3D=3D30009=3D=3D    by 0x886A8D7: QSingleShotTimer::event(QEvent*)=20
(qtimer.cpp:286)
=3D=3D30009=3D=3D    by 0x87F4984: QApplication::internalNotify(QObject*,=20
QEvent*) (qapplication.cpp:2636)
=3D=3D30009=3D=3D    by 0x87F55B6: QApplication::notify(QObject*, QEvent*)=
=20
(qapplication.cpp:2359)
=3D=3D30009=3D=3D  Address 0x15403708 is not stack'd, malloc'd or (recently=
)=20
free'd
=3D=3D30009=3D=3D
=3D=3D30009=3D=3D Invalid read of size 1
=3D=3D30009=3D=3D    at 0x88796A8: QWidget::topLevelWidget() const=20
(qwidget.cpp:2359)
=3D=3D30009=3D=3D    by 0xE58BCB5: QXIMInputContext::setMicroFocus(int, int=
,=20
int, int, QFont*) (qximinputcontext_x11.cpp:758)
=3D=3D30009=3D=3D    by 0x87C89F3: QWidget::setMicroFocusHint(int, int, int=
,=20
int, bool, QFont*) (qwidget_x11.cpp:981)
=3D=3D30009=3D=3D    by 0xF5C7C82: TEWidget::setCursorPos(int, int)=20
(TEWidget.cpp:793)
=3D=3D30009=3D=3D    by 0xF5D8F79: TEmulation::showBulk() (TEmulation.cpp:4=
71)
=3D=3D30009=3D=3D    by 0xF5D9027: TEmulation::setConnect(bool)=20
(TEmulation.cpp:494)
=3D=3D30009=3D=3D    by 0xF5CF923: TEmuVt102::setConnect(bool)=20
(TEmuVt102.cpp:1195)
=3D=3D30009=3D=3D    by 0xF5BB692: TESession::setConnect(bool) (session.cpp=
:352)
=3D=3D30009=3D=3D    by 0xF5B18DD: konsolePart::newSession()=20
(konsole_part.cpp:1088)
=3D=3D30009=3D=3D    by 0xF5B193C: konsolePart::startProgram(QString const&=
,=20
QStrList const&) (konsole_part.cpp:1054)
=3D=3D30009=3D=3D    by 0xF5AE81E: konsolePart::showShellInDir(QString cons=
t&)=20
(konsole_part.cpp:1102)
=3D=3D30009=3D=3D    by 0xF5ADD22: konsolePart::showShell()=20
(konsole_part.cpp:1117)
=3D=3D30009=3D=3D    by 0xF5ADD4F: konsolePart::autoShowShell()=20
(konsole_part.cpp:212)
=3D=3D30009=3D=3D    by 0xF5B498B: konsolePart::qt_invoke(int, QUObject*)=20
(konsole_part.moc:334)
=3D=3D30009=3D=3D    by 0x884B7AB: QObject::activate_signal(QConnectionList=
*,=20
QUObject*) (qobject.cpp:2356)
=3D=3D30009=3D=3D    by 0x8B2D307: QSignal::signal(QVariant const&)=20
(moc_qsignal.cpp:100)
=3D=3D30009=3D=3D    by 0x88642B4: QSignal::activate() (qsignal.cpp:212)
=3D=3D30009=3D=3D    by 0x886A8D7: QSingleShotTimer::event(QEvent*)=20
(qtimer.cpp:286)
=3D=3D30009=3D=3D    by 0x87F4984: QApplication::internalNotify(QObject*,=20
QEvent*) (qapplication.cpp:2636)
=3D=3D30009=3D=3D    by 0x87F55B6: QApplication::notify(QObject*, QEvent*)=
=20
(qapplication.cpp:2359)
=3D=3D30009=3D=3D  Address 0x73006E006F00E7 is not stack'd, malloc'd or=20
(recently) free'd
KCrash: crashing... crashRecursionCounter =3D 2
KCrash: Application Name =3D kdevelop path =3D <unknown> pid =3D 30009


Which gives a hint that the topLevelWidget might be corrupted. I copied=20
the code from QXIMInputContext::setMicroFocus into the konsole part=20
just before the setMicroFocusHint is called and it does not crash=20
there. The problem might be that the QXIMInputContext itself is=20
corrupted! In QWidget::setMicroFocusHint the inputcontext is created,=20
or retrieved from icWidget->topData()->xic. Might be a problem=20
somewhere here and in some cases this returns an invalid pointer.
It is true that I do not see any assignment to QWidget::topData()->xic=20
[=3DQWidget::extra->topExtra->xic] but one place to set it to 0 and=20
commented as "created lazily", altough it is used in many places.

Maybe someone can look at it and see if I'm right here, or the problem=20
is in another place.
Until that I still recommend the hasFocus() workaround.

Andras

=2D-=20
Quanta Plus developer - http://quanta.kdewebdev.org
K Desktop Environment - http://www.kde.org

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