(gdb) run
Starting program: /usr/bin/qmlscene main.qml
process 1111 is executing new program: /usr/lib/qt/bin/qmlscene
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Using Wayland-EGL
[New Thread 0x7fffe30fa700 (LWP 1116)]
[New Thread 0x7fffeb301700 (LWP 1115)]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff5e1a510 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
(gdb) bt
#0  0x00007ffff5e1a510 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#1  0x00007ffff5e70b1d in QTimerInfoList::activateTimers() () from /usr/lib/libQt5Core.so.5
#2  0x00007ffff5e71021 in ?? () from /usr/lib/libQt5Core.so.5
#3  0x00007ffff46f39fd in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#4  0x00007ffff46f3ce0 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0x00007ffff46f3d8c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#6  0x00007ffff5e71d1b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt5Core.so.5
#7  0x00007ffff5e17ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#8  0x00007ffff5e1fa4c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#9  0x0000000000404070 in ?? ()
#10 0x00007ffff5193790 in __libc_start_main () from /usr/lib/libc.so.6
#11 0x0000000000405839 in ?? ()
(gdb) quit