758 static snackWidget * checkboxWidget(PyObject * s, PyObject * args) {
759     snackWidget * widget;
760     char * text;
761     int isOn;
762 
763     if (!PyArg_ParseTuple(args, "si", &text, &isOn)) return NULL;
764 
when PyArg_ParseTuple() succeeds
taking False path
765     widget = snackWidgetNew ();
766     widget->co = newtCheckbox(-1, -1, text, isOn ? '*' : ' ', NULL, 
when snackWidgetNew() fails
767 				&widget->achar);
dereferencing NULL (widget->achar) at snackmodule.c:767
768 
769     return widget;
770 }
771