(gdb) r Starting program: /home/cmaureir/dev/envQt5.13Py3.7.4/bin/python test3.py test3.ui [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". [New Thread 0x7fffef16a700 (LWP 14848)] Qt WebEngine seems to be initialized from a plugin. Please set Qt::AA_ShareOpenGLContexts using QCoreApplication::setAttribute before constructing QGuiApplication. orig_widget_inst = True C++ address....... PySide2.QtWidgets.QWidget/0x55555633e700 hasOwnership...... 0 containsCppWrapper 0 validCppObject.... 1 wasCreatedByPython 0 my_widget_inst = True C++ address....... PySide2.QtWidgets.QWidget/0x55555633eb30 hasOwnership...... 1 containsCppWrapper 1 validCppObject.... 1 wasCreatedByPython 1 Thread 1 "python" received signal SIGSEGV, Segmentation fault. 0x00007ffff23b2e99 in QApplicationPrivate::notify_helper (this=, receiver=0x55555633eb30, e=0x7fffffffb220) at kernel/qapplication.cpp:3740 3740 kernel/qapplication.cpp: No such file or directory. (gdb) bt #0 0x00007ffff23b2e99 in QApplicationPrivate::notify_helper (this=, receiver=0x55555633eb30, e=0x7fffffffb220) at kernel/qapplication.cpp:3740 #1 0x00007ffff23b9fa0 in QApplication::notify (this=0x5555562e4610, receiver=0x55555633eb30, e=0x7fffffffb220) at kernel/qapplication.cpp:3486 #2 0x00007ffff0df577e in QApplicationWrapper::notify (this=0x5555562e4610, arg__1=0x55555633eb30, arg__2=0x7fffffffb220) at PySide2/QtWidgets/PySide2/QtWidgets/qapplication_wrapper.cpp:342 #3 0x00007ffff5e1bea8 in QCoreApplication::notifyInternal2 (receiver=0x55555633eb30, event=0x7fffffffb220) at kernel/qcoreapplication.cpp:1065 #4 0x00007ffff5e1c05e in QCoreApplication::sendEvent (receiver=, event=event@entry=0x7fffffffb220) at kernel/qcoreapplication.cpp:1460 #5 0x00007ffff5e504a5 in QObjectPrivate::setParent_helper (this=0x55555632e370, o=o@entry=0x55555633eb30) at kernel/qobject.cpp:2062 #6 0x00007ffff5e50da9 in QObject::setParent (this=this@entry=0x55555633fb40, parent=parent@entry=0x55555633eb30) at kernel/qobject.cpp:2006 #7 0x00007ffff5e50e36 in QObject::QObject (this=0x55555633fb40, parent=0x55555633eb30) at kernel/qobject.cpp:817 #8 0x00007ffff2acca1c in QFormInternal::TranslationWatcher::TranslationWatcher (idBased=false, className=..., parent=0x55555633eb30, this=0x55555633fb40) at quiloader.cpp:241 #9 QFormInternal::FormBuilderPrivate::applyProperties (this=this@entry=0x555556314590, o=o@entry=0x55555633eb30, properties=...) at quiloader.cpp:443 #10 0x00007ffff2adb187 in QFormInternal::QAbstractFormBuilder::create (this=this@entry=0x555556314590, ui_widget=ui_widget@entry=0x555556346a20, parentWidget=parentWidget@entry=0x0) at ../lib/uilib/abstractformbuilder.cpp:268 #11 0x00007ffff2ae67eb in QFormInternal::QFormBuilder::create (this=this@entry=0x555556314590, ui_widget=0x555556346a20, parentWidget=0x0) at ../lib/uilib/formbuilder.cpp:164 #12 0x00007ffff2accbce in QFormInternal::FormBuilderPrivate::create (this=0x555556314590, ui_widget=, parentWidget=) at quiloader.cpp:480 #13 0x00007ffff2ad2c29 in QFormInternal::QAbstractFormBuilder::create (this=this@entry=0x555556314590, ui=ui@entry=0x55555632ac70, parentWidget=parentWidget@entry=0x0) at ../lib/uilib/abstractformbuilder.cpp:219 #14 0x00007ffff2ae6965 in QFormInternal::QFormBuilder::create (this=this@entry=0x555556314590, ui=ui@entry=0x55555632ac70, parentWidget=parentWidget@entry=0x0) at ../lib/uilib/formbuilder.cpp:353 #15 0x00007ffff2accb64 in QFormInternal::FormBuilderPrivate::create (this=0x555556314590, ui=0x55555632ac70, parentWidget=0x0) at quiloader.cpp:475 #16 0x00007ffff2ad23d5 in QFormInternal::QAbstractFormBuilder::load (this=0x555556314590, dev=, parentWidget=0x0) at ../lib/uilib/abstractformbuilder.cpp:191 #17 0x00007ffff2abbefd in QUiLoadedLoadUiFromDevice (self=0x55555632dfe0, dev=0x55555632d0c0, parent=0x0) at PySide2/QtUiTools/PySide2/QtUiTools/quiloader_wrapper.cpp:146 #18 0x00007ffff2ac0cd7 in Sbk_QUiLoaderFunc_load (self=0x7fffefef1730, args=0x7ffff2bfa410, kwds=0x0) at PySide2/QtUiTools/PySide2/QtUiTools/quiloader_wrapper.cpp:1350 #19 0x00005555555c55c6 in _PyMethodDef_RawFastCallKeywords (method=0x7ffff2b2f760 , self=0x7fffefef1730, args=0x7ffff77f45c8, nargs=1, kwnames=0x0) at ../Python-3.7.4/./Objects/call.c:694 #20 0x00005555555c57a1 in _PyCFunction_FastCallKeywords (func=0x7fffefeefb90, args=0x7ffff77f45c8, nargs=1, kwnames=0x0) at ../Python-3.7.4/./Objects/call.c:734 #21 0x00005555556910d2 in call_function (pp_stack=0x7fffffffba78, oparg=1, kwnames=0x0) at ../Python-3.7.4/./Python/ceval.c:4568 #22 0x000055555568b2ba in _PyEval_EvalFrameDefault (f=0x7ffff77f4450, throwflag=0) at ../Python-3.7.4/./Python/ceval.c:3093 #23 0x000055555567d75a in PyEval_EvalFrameEx (f=0x7ffff77f4450, throwflag=0) at ../Python-3.7.4/./Python/ceval.c:547 #24 0x000055555568f0d9 in _PyEval_EvalCodeWithName (_co=0x7ffff7826300, globals=0x7ffff7860c30, locals=0x7ffff7860c30, args=0x0, argcount=0, kwnames=0x0, kwargs=0x0, kwcount=0, kwstep=2, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0, name=0x0, qualname=0x0) at ../Python-3.7.4/./Python/ceval.c:3930 #25 0x000055555568f2d0 in PyEval_EvalCodeEx (_co=0x7ffff7826300, globals=0x7ffff7860c30, locals=0x7ffff7860c30, args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0) at ../Python-3.7.4/./Python/ceval.c:3959 #26 0x000055555567d6dc in PyEval_EvalCode (co=0x7ffff7826300, globals=0x7ffff7860c30, locals=0x7ffff7860c30) at ../Python-3.7.4/./Python/ceval.c:524 #27 0x00005555556d4fa0 in run_mod (mod=0x555555da6468, filename=0x7ffff7827df0, globals=0x7ffff7860c30, locals=0x7ffff7860c30, flags=0x7fffffffd544, arena=0x7ffff7876390) at ../Python-3.7.4/./Python/pythonrun.c:1035 #28 0x00005555556d4d69 in PyRun_FileExFlags (fp=0x555555d8f7a0, filename_str=0x7ffff77f04d0 "test3.py", start=257, globals=0x7ffff7860c30, locals=0x7ffff7860c30, closeit=1, flags=0x7fffffffd544) at ../Python-3.7.4/./Python/pythonrun.c:988 #29 0x00005555556d3168 in PyRun_SimpleFileExFlags (fp=0x555555d8f7a0, filename=0x7ffff77f04d0 "test3.py", closeit=1, flags=0x7fffffffd544) at ../Python-3.7.4/./Python/pythonrun.c:429 #30 0x00005555556d2184 in PyRun_AnyFileExFlags (fp=0x555555d8f7a0, filename=0x7ffff77f04d0 "test3.py", closeit=1, flags=0x7fffffffd544) at ../Python-3.7.4/./Python/pythonrun.c:84 #31 0x00005555555ae244 in pymain_run_file (fp=0x555555d8f7a0, filename=0x555555d36310 L"test3.py", p_cf=0x7fffffffd544) at ../Python-3.7.4/./Modules/main.c:427 #32 0x00005555555b11a9 in pymain_run_filename (pymain=0x7fffffffd5a0, cf=0x7fffffffd544) at ../Python-3.7.4/./Modules/main.c:1606 #33 0x00005555555b5eea in pymain_run_python (pymain=0x7fffffffd5a0) at ../Python-3.7.4/./Modules/main.c:2867 #34 0x00005555555b6471 in pymain_main (pymain=0x7fffffffd5a0) at ../Python-3.7.4/./Modules/main.c:3028 #35 0x00005555555b655c in _Py_UnixMain (argc=3, argv=0x7fffffffd718) at ../Python-3.7.4/./Modules/main.c:3063 #36 0x00005555555ad619 in main (argc=3, argv=0x7fffffffd718) at ../Python-3.7.4/./Programs/python.c:15