Uninitialised value in crossing event handling
==416911== Conditional jump or move depends on uninitialised value(s)
==416911== at 0x4991913: update_pointer_focus (gtkeventcontrollermotion.c:117)
==416911== by 0x4991ADC: gtk_event_controller_motion_handle_crossing (gtkeventcontrollermotion.c:156)
==416911== by 0x498F5DA: gtk_event_controller_handle_crossing (gtkeventcontroller.c:381)
==416911== by 0x4B96A67: gtk_widget_handle_crossing (gtkwidget.c:4472)
==416911== by 0x4B9D190: _gtk_widget_synthesize_crossing (gtkwidget.c:7694)
==416911== by 0x4A2C3E0: synth_crossing_for_grab_notify (gtkmain.c:1874)
==416911== by 0x4A2C646: gtk_grab_notify_foreach (gtkmain.c:1935)
==416911== by 0x4A2C833: gtk_grab_notify (gtkmain.c:1992)
==416911== by 0x4A2C938: gtk_grab_add (gtkmain.c:2032)
==416911== by 0x4BAF162: gtk_window_set_modal (gtkwindow.c:2285)
==416911== by 0x15CAE6: run_example_for_row (main.c:172)
==416911== by 0x15EC59: row_activated_cb (main.c:1005)
==416911== by 0x48E7A0F: _gtk_marshal_VOID__BOXED_OBJECTv (gtkmarshalers.c:3791)
==416911== by 0x5254168: _g_closure_invoke_va (gclosure.c:873)
==416911== by 0x5271698: g_signal_emit_valist (gsignal.c:3403)
==416911== by 0x527293B: g_signal_emit (gsignal.c:3550)
==416911== by 0x4B7AC94: gtk_tree_view_row_activated (gtktreeview.c:11199)
==416911== by 0x4B66EFB: gtk_tree_view_click_gesture_pressed (gtktreeview.c:3020)
==416911== by 0x48EABF4: _gtk_marshal_VOID__INT_DOUBLE_DOUBLEv (gtkmarshalers.c:5445)
==416911== by 0x5254168: _g_closure_invoke_va (gclosure.c:873)
==416911== by 0x5271698: g_signal_emit_valist (gsignal.c:3403)
==416911== by 0x527293B: g_signal_emit (gsignal.c:3550)
==416911== by 0x49D50C0: gtk_gesture_click_begin (gtkgestureclick.c:236)
==416911== by 0x52590C7: g_cclosure_marshal_VOID__BOXEDv (gmarshal.c:1686)
==416911== by 0x525461C: g_type_class_meta_marshalv (gclosure.c:1034)
==416911== by 0x5254168: _g_closure_invoke_va (gclosure.c:873)
==416911== by 0x5271698: g_signal_emit_valist (gsignal.c:3403)
==416911== by 0x527293B: g_signal_emit (gsignal.c:3550)
==416911== by 0x49D0750: _gtk_gesture_set_recognized (gtkgesture.c:339)
==416911== by 0x49D08C8: _gtk_gesture_check_recognized (gtkgesture.c:385)
==416911== by 0x49D1117: gtk_gesture_handle_event (gtkgesture.c:644)
==416911== by 0x49D734F: gtk_gesture_single_handle_event (gtkgesturesingle.c:227)
==416911== by 0x49D54E8: gtk_gesture_click_handle_event (gtkgestureclick.c:329)
==416911== by 0x498F441: gtk_event_controller_handle_event (gtkeventcontroller.c:345)
==416911== by 0x4B9698D: gtk_widget_run_controllers (gtkwidget.c:4436)
==416911== by 0x4B96E57: gtk_widget_event (gtkwidget.c:4597)
==416911== by 0x4A2CCBF: gtk_propagate_event_internal (gtkmain.c:2175)
==416911== by 0x4A2CE49: gtk_propagate_event (gtkmain.c:2225)
==416911== by 0x4A2C0DE: gtk_main_do_event (gtkmain.c:1768)
==416911== by 0x4BB4E3F: surface_event (gtkwindow.c:4900)
==416911== by 0x4CEFDF8: _gdk_marshal_BOOLEAN__POINTERv (gdkmarshalers.c:302)
==416911== by 0x5254168: _g_closure_invoke_va (gclosure.c:873)
==416911== by 0x5271698: g_signal_emit_valist (gsignal.c:3403)
==416911== by 0x527293B: g_signal_emit (gsignal.c:3550)
==416911== by 0x4D28682: gdk_surface_handle_event (gdksurface.c:2976)
==416911== by 0x4D0C3C0: _gdk_event_emit (gdkevents.c:514)
==416911== by 0x4D3EAF6: gdk_event_source_dispatch (gdkeventsource.c:141)
==416911== by 0x5146B49: g_main_dispatch (gmain.c:3309)
==416911== by 0x5147A38: g_main_context_dispatch (gmain.c:3974)
==416911== by 0x5147C2B: g_main_context_iterate (gmain.c:4047)
==416911== Uninitialised value was created by a stack allocation
==416911== at 0x4B9D092: _gtk_widget_synthesize_crossing (gtkwidget.c:7673)
==416911==
==416911==