https://bugs.kde.org/show_bug.cgi?id=504104
--- Comment #1 from Ian H <master.ha...@gmail.com> ---
added debug information files for qt. created another backtrace
Thread 1 "kdevelop" received signal SIGSEGV, Segmentation fault.
QSortFilterProxyModelPrivate::_q_sourceHeaderDataChanged (this=<optimized out>,
orientation=Qt::Horizontal, start=<optimized out>, end=<optimized out>)
at
/home/qt/work/qt/qtbase/src/corelib/itemmodels/qsortfilterproxymodel.cpp:1554
warning: 1554
/home/qt/work/qt/qtbase/src/corelib/itemmodels/qsortfilterproxymodel.cpp: No
such file or directory
(gdb) bt
#0 QSortFilterProxyModelPrivate::_q_sourceHeaderDataChanged (this=<optimized
out>, orientation=Qt::Horizontal, start=<optimized out>, end=<optimized out>)
at
/home/qt/work/qt/qtbase/src/corelib/itemmodels/qsortfilterproxymodel.cpp:1554
#1 0x0000707be43dd608 in QtPrivate::QSlotObjectBase::call (a=0x7ffd4a70c3c0,
r=0x59280d2d1a70, this=0x59280d217c90) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qobjectdefs_impl.h:486
#2 doActivate<false> (sender=0x59280d012000, signal_index=5,
argv=argv@entry=0x7ffd4a70c3c0) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qobject.cpp:4115
#3 0x0000707be43d5a58 in QMetaObject::activate
(sender=sender@entry=0x59280d012000, m=m@entry=0x707be48cc680
<QAbstractItemModel::staticMetaObject>,
local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffd4a70c3c0)
at /home/qt/work/qt/qtbase/src/corelib/kernel/qobject.cpp:4175
#4 0x0000707be45de93a in QAbstractItemModel::headerDataChanged
(this=this@entry=0x59280d012000, _t1=<optimized out>, _t1@entry=Qt::Horizontal,
_t2=<optimized out>,
_t2@entry=0, _t3=<optimized out>) at
/home/qt/work/qt/qtbase_build/src/corelib/Core_autogen/include/moc_qabstractitemmodel.cpp:1032
#5 0x0000707be460e16a in QAbstractProxyModelPrivate::emitHeaderDataChanged
(this=0x59280e1a4250) at
/home/qt/work/qt/qtbase/src/corelib/itemmodels/qabstractproxymodel.cpp:64
#6 0x0000707be43d1668 in QObject::event (this=0x59280d012000,
e=0x59280f9f99f0) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qobject.cpp:1418
#7 0x0000707be59907a6 in QApplicationPrivate::notify_helper (this=<optimized
out>, receiver=0x59280d012000, e=0x59280f9f99f0)
at /home/qt/work/qt/qtbase/src/widgets/kernel/qapplication.cpp:3296
#8 0x0000707be437bc32 in QCoreApplication::notifyInternal2
(receiver=0x59280d012000, event=0x59280f9f99f0) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qcoreapplication.cpp:1172
#9 0x0000707be437be4d in QCoreApplication::sendEvent (receiver=<optimized
out>, event=<optimized out>) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qcoreapplication.cpp:1612
#10 0x0000707be437f1ad in QCoreApplicationPrivate::sendPostedEvents
(receiver=0x0, event_type=0, data=0x59280a95e720) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qcoreapplication.cpp:1946
#11 0x0000707be437f460 in QCoreApplication::sendPostedEvents
(receiver=<optimized out>, event_type=<optimized out>) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qcoreapplication.cpp:1800
#12 0x0000707be46584c7 in postEventSourceDispatch (s=0x59280a9d7490) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:246
#13 0x0000707bdf7145b5 in ??? () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x0000707bdf773717 in ??? () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x0000707bdf713a53 in g_main_context_iteration () at
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x0000707be4657b8e in QEventDispatcherGlib::processEvents
(this=0x59280a9d3c60, flags=...) at
/home/qt/work/qt/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#17 0x0000707be438830b in QEventLoop::exec (this=this@entry=0x7ffd4a70c800,
flags=..., flags@entry=...) at
/home/qt/work/qt/qtbase/src/corelib/global/qflags.h:34
#18 0x0000707be43842f6 in QCoreApplication::exec () at
/home/qt/work/qt/qtbase/src/corelib/global/qflags.h:74
#19 0x0000707be4dd5070 in QGuiApplication::exec () at
/home/qt/work/qt/qtbase/src/gui/kernel/qguiapplication.cpp:1975
#20 0x0000707be5990719 in QApplication::exec () at
/home/qt/work/qt/qtbase/src/widgets/kernel/qapplication.cpp:2564
#21 0x00005927d86c1ffd in main (argc=<optimized out>, argv=<optimized out>) at
/home/user/kde/src/kdevelop/app/main.cpp:835
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