Crash when trying to select encoding

Thread 1 (Thread 0x7f925dc15940 (LWP 9171)):
#0  0x00007f92619402a2 in raise () from /lib64/libc.so.6
#1  0x00007f92619298a4 in abort () from /lib64/libc.so.6
#2  0x00007f9261f39423 in qt_message_fatal (context=..., message=...) at /home/jarek/dev/qt-62/qtbase/src/corelib/global/qlogging.cpp:1898
#3  0x00007f9261f35598 in QMessageLogger::fatal (this=0x7ffc3f1e4450, msg=0x7f92623bab28 "ASSERT: \"%s\" in file %s, line %d") at /home/jarek/dev/qt-62/qtbase/src/corelib/global/qlogging.cpp:890
#4  0x00007f9261f2a5f0 in qt_assert (assertion=0x7f926245a5f8 "end - ba.constData() == length", file=0x7f926245a540 "/home/jarek/dev/qt-62/qtbase/src/corelib/text/qstringconverter.cpp", line=1030) at /home/jarek/dev/qt-62/qtbase/src/corelib/global/qglobal.cpp:3281
#5  0x00007f9262176df8 in QUtf32::convertFromUnicode (in=..., state=0x7ffc3f1e4520, endian=DetectEndianness) at /home/jarek/dev/qt-62/qtbase/src/corelib/text/qstringconverter.cpp:1030
#6  0x00007f926411f475 in QUtf32Codec::convertFromUnicode (this=0x4fba360, uc=0x50f7d00, len=901, state=0x7ffc3f1e4520) at /home/jarek/dev/qt-62/qt5compat/src/core5/codecs/qutfcodec.cpp:167
#7  0x00007f9264183e89 in QTextCodec::fromUnicode (this=0x4fba360, str=...) at /home/jarek/dev/qt-62/qt5compat/src/core5/codecs/qtextcodec.cpp:839
#8  0x00007f9245a94b49 in Core::CodecSelector::CodecSelector (this=0x7ffc3f1e4a40, parent=0x5009d50, doc=0x7f9248009c30) at /home/jarek/dev/creator-6/src/plugins/coreplugin/dialogs/codecselector.cpp:93
#9  0x00007f9245712315 in TextEditor::TextEditorWidget::selectEncoding (this=0x5009d50) at /home/jarek/dev/creator-6/src/plugins/texteditor/texteditor.cpp:1352
#10 0x00007f92457127dd in operator() (__closure=0x4fd8008) at /home/jarek/dev/creator-6/src/plugins/texteditor/texteditor.cpp:1422
#11 0x00007f924573ec3a in std::__invoke_impl<void, TextEditor::Internal::TextEditorWidgetPrivate::updateCannotDecodeInfo()::<lambda()>&>(std::__invoke_other, struct {...} &) (__f=...) at /usr/include/c++/11/bits/invoke.h:61
#12 0x00007f924573d05d in std::__invoke_r<void, TextEditor::Internal::TextEditorWidgetPrivate::updateCannotDecodeInfo()::<lambda()>&>(struct {...} &) (__fn=...) at /usr/include/c++/11/bits/invoke.h:111
#13 0x00007f924573bcf9 in std::_Function_handler<void(), TextEditor::Internal::TextEditorWidgetPrivate::updateCannotDecodeInfo()::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /usr/include/c++/11/bits/std_function.h:291
#14 0x00007f926441c4dc in std::function<void ()>::operator()() const (this=0x4fd8008) at /usr/include/c++/11/bits/std_function.h:560
#15 0x00007f92644192fa in operator() (__closure=0x4fd7fd0) at /home/jarek/dev/creator-6/src/libs/utils/infobar.cpp:323
#16 0x00007f926441b173 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, Utils::InfoBarDisplay::update()::<lambda()> >::call(struct {...} &, void **) (f=..., arg=0x7ffc3f1e4e20) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qobjectdefs_impl.h:146
#17 0x00007f926441b05f in QtPrivate::Functor<Utils::InfoBarDisplay::update()::<lambda()>, 0>::call<QtPrivate::List<>, void>(struct {...} &, void *, void **) (f=..., arg=0x7ffc3f1e4e20) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qobjectdefs_impl.h:256
#18 0x00007f926441af86 in QtPrivate::QFunctorSlotObject<Utils::InfoBarDisplay::update()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=1, this_=0x4fd7fc0, r=0x5098f00, a=0x7ffc3f1e4e20, ret=0x0) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qobjectdefs_impl.h:420
#19 0x00007f926202dc91 in QtPrivate::QSlotObjectBase::call (this=0x4fd7fc0, r=0x5098f00, a=0x7ffc3f1e4e20) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qobjectdefs_impl.h:375
#20 0x00007f9262093443 in doActivate<false> (sender=0x5098f00, signal_index=9, argv=0x7ffc3f1e4e20) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qobject.cpp:3904
#21 0x00007f926208bda9 in QMetaObject::activate (sender=0x5098f00, m=0x7f926403e880 <QAbstractButton::staticMetaObject>, local_signal_index=2, argv=0x7ffc3f1e4e20) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qobject.cpp:3964
#22 0x00007f9263906042 in QAbstractButton::clicked (this=0x5098f00, _t1=false) at qtbase/src/widgets/Widgets_autogen/include/moc_qabstractbutton.cpp:290
#23 0x00007f92639038c8 in QAbstractButtonPrivate::emitClicked (this=0x507c900) at /home/jarek/dev/qt-62/qtbase/src/widgets/widgets/qabstractbutton.cpp:414
#24 0x00007f926390385a in QAbstractButtonPrivate::click (this=0x507c900) at /home/jarek/dev/qt-62/qtbase/src/widgets/widgets/qabstractbutton.cpp:407
#25 0x00007f9263904d83 in QAbstractButton::mouseReleaseEvent (this=0x5098f00, e=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/widgets/widgets/qabstractbutton.cpp:1011
#26 0x00007f9263a89bf3 in QToolButton::mouseReleaseEvent (this=0x5098f00, e=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/widgets/widgets/qtoolbutton.cpp:619
#27 0x00007f92637be849 in QWidget::event (this=0x5098f00, event=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qwidget.cpp:8693
#28 0x00007f9263904b89 in QAbstractButton::event (this=0x5098f00, e=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/widgets/widgets/qabstractbutton.cpp:968
#29 0x00007f9263a8b291 in QToolButton::event (this=0x5098f00, event=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/widgets/widgets/qtoolbutton.cpp:1017
#30 0x00007f926373f388 in QApplicationPrivate::notify_helper (this=0x8b5b70, receiver=0x5098f00, e=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qapplication.cpp:3401
#31 0x00007f926373d16e in QApplication::notify (this=0x7ffc3f1e7210, receiver=0x5098f00, e=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qapplication.cpp:2865
#32 0x00007f926200fc28 in QCoreApplication::notifyInternal2 (receiver=0x5098f00, event=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qcoreapplication.cpp:1063
#33 0x00007f9262010634 in QCoreApplication::sendSpontaneousEvent (receiver=0x5098f00, event=0x7ffc3f1e5bb0) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qcoreapplication.cpp:1483
#34 0x00007f926373baf6 in QApplicationPrivate::sendMouseEvent (receiver=0x5098f00, event=0x7ffc3f1e5bb0, alienWidget=0x5098f00, nativeWidget=0xbc4610, buttonDown=0x7f9264072fe0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qapplication.cpp:2402
#35 0x00007f92637f16f6 in QWidgetWindow::handleMouseEvent (this=0xd82970, event=0x7ffc3f1e6910) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qwidgetwindow.cpp:678
#36 0x00007f92637efc8e in QWidgetWindow::event (this=0xd82970, event=0x7ffc3f1e6910) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qwidgetwindow.cpp:295
#37 0x00007f926373f388 in QApplicationPrivate::notify_helper (this=0x8b5b70, receiver=0xd82970, e=0x7ffc3f1e6910) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qapplication.cpp:3401
#38 0x00007f926373c935 in QApplication::notify (this=0x7ffc3f1e7210, receiver=0xd82970, e=0x7ffc3f1e6910) at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qapplication.cpp:2760
#39 0x00007f926200fc28 in QCoreApplication::notifyInternal2 (receiver=0xd82970, event=0x7ffc3f1e6910) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qcoreapplication.cpp:1063
#40 0x00007f9262010634 in QCoreApplication::sendSpontaneousEvent (receiver=0xd82970, event=0x7ffc3f1e6910) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qcoreapplication.cpp:1483
#41 0x00007f9262c2be64 in QGuiApplicationPrivate::processMouseEvent (e=0x50d0b40) at /home/jarek/dev/qt-62/qtbase/src/gui/kernel/qguiapplication.cpp:2246
#42 0x00007f9262c2b2cd in QGuiApplicationPrivate::processWindowSystemEvent (e=0x50d0b40) at /home/jarek/dev/qt-62/qtbase/src/gui/kernel/qguiapplication.cpp:1997
#43 0x00007f9262ca18c7 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at /home/jarek/dev/qt-62/qtbase/src/gui/kernel/qwindowsysteminterface.cpp:1166
#44 0x00007f925062f4af in xcbSourceDispatch (source=0x908020) at /home/jarek/dev/qt-62/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:93
#45 0x00007f925eceb4cf in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#46 0x00007f925ed3f4f8 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#47 0x00007f925ece8c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#48 0x00007f926237a4aa in QEventDispatcherGlib::processEvents (this=0x900970, flags=...) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:429
#49 0x00007f925062f6ec in QXcbGlibEventDispatcher::processEvents (this=0x900970, flags=...) at /home/jarek/dev/qt-62/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:132
#50 0x00007f9262022313 in QEventLoop::processEvents (this=0x7ffc3f1e6e20, flags=...) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qeventloop.cpp:139
#51 0x00007f9262022643 in QEventLoop::exec (this=0x7ffc3f1e6e20, flags=...) at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qeventloop.cpp:232
#52 0x00007f926201043f in QCoreApplication::exec () at /home/jarek/dev/qt-62/qtbase/src/corelib/kernel/qcoreapplication.cpp:1378
#53 0x00007f9262c2abc6 in QGuiApplication::exec () at /home/jarek/dev/qt-62/qtbase/src/gui/kernel/qguiapplication.cpp:1860
#54 0x00007f926373c30f in QApplication::exec () at /home/jarek/dev/qt-62/qtbase/src/widgets/kernel/qapplication.cpp:2610
#55 0x000000000040e0d0 in main (argc=3, argv=0x7ffc3f1e8448) at /home/jarek/dev/creator-6/src/app/main.cpp:771