I'm going to poke around the KDE source for the HighCOlor plugin to see if I can figure out what it's doing when it calls into libstdc++.
Looking at kdelibs/kstyles/highcolor/highcolor.cpp in the HighColorStyle::eventFilter() method, the following statement occurs near the beginning of the method:
bool HighColorStyle::eventFilter( QObject *object, QEvent *event )
{
...QPushButton* button = dynamic_cast<QPushButton*>(object);
Here's the backtrace again:
#0 0x400f9a93 in __dynamic_cast () from /usr/lib/libstdc++.so.5
#1 0x414b561f in HighColorStyle::eventFilter ()
from /usr/lib/kde3/plugins/styles/highcolor.so
#2 0x4048cb10 in QObject::activate_filters () from /usr/lib/libqt-mt.so.3
#3 0x4048c9f1 in QObject::event () from /usr/lib/libqt-mt.so.3
#4 0x404b9375 in QWidget::event () from /usr/lib/libqt-mt.so.3
#5 0x411b3341 in sipQPushButton::event (this=0x82c8a90, a0=0x82c9758)
at sipqtQRadioButton.cpp:3382
#6 0x4043c4da in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#7 0x4043c2e4 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#8 0x413fabb4 in sipQApplication::notify (this=0x824a5f8, a0=0x82c8a90,
a1=0x82c9758) at sipqtQApplication.cpp:221
#9 0x4043d1bd in QApplication::sendPostedEvents () from
/usr/lib/libqt-mt.so.3
#10 0x404b8e1f in QWidget::polish () from /usr/lib/libqt-mt.so.3
#11 0x411b46ee in sipQPushButton::polish (this=0x82c8a90)
at sipqtQRadioButton.cpp:3709
#12 0x4055b52b in QPushButton::sizeHint () from /usr/lib/libqt-mt.so.3
#13 0x411b9f7e in sipDo_QPushButton_sizeHint (sipThisObj=0x82cfbb0,
sipArgs=0x810c0cc) at sipqtQPushButton.cpp:2818
Since the backtrace involves QPushButton, it would seem that this line in highcolor.cpp is probably causing the segfault. Any ideas why?
Ciao, Gordon
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