(gdb) run
Starting program: /usr/bin/yakuake 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffe4938700 (LWP 1042)]

Thread 1 "yakuake" received signal SIGSEGV, Segmentation fault.
0x00007ffff40bc550 in QKeySequence::operator=(QKeySequence const&) ()
   from /usr/lib/libQt5Gui.so.5
(gdb) backtrace 
#0  0x00007ffff40bc550 in QKeySequence::operator=(QKeySequence const&) ()
   from /usr/lib/libQt5Gui.so.5
#1  0x000000000043b0ee in ?? ()
#2  0x000000000043b621 in ?? ()
#3  0x0000000000419ca5 in ?? ()
#4  0x00007ffff3d8efd1 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#5  0x00007ffff4694d2b in QWidget::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#6  0x00007ffff47ab06b in QMainWindow::event(QEvent*) ()
   from /usr/lib/libQt5Widgets.so.5
#7  0x00007ffff4651fcc in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
   from /usr/lib/libQt5Widgets.so.5
#8  0x00007ffff46574a6 in QApplication::notify(QObject*, QEvent*) ()
   from /usr/lib/libQt5Widgets.so.5
#9  0x00007ffff3d5f9ab in QCoreApplication::notifyInternal(QObject*, QEvent*) ()
   from /usr/lib/libQt5Core.so.5
#10 0x00007ffff3d61da6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#11 0x00007ffff3db5f33 in ?? () from /usr/lib/libQt5Core.so.5
#12 0x00007fffef726d87 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#13 0x00007fffef726fe0 in ?? () from /usr/lib/libglib-2.0.so.0
#14 0x00007fffef72708c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#15 0x00007ffff3db633f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#16 0x00007ffff3d5d37a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt5Core.so.5
#17 0x00007ffff3d6533c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#18 0x0000000000415fb5 in ?? ()
#19 0x00007ffff33d6710 in __libc_start_main () from /usr/lib/libc.so.6
#20 0x0000000000416039 in _start ()