StacktraceTop: g_type_check_instance_cast (type_instance=0xaaaaaaaaaaaaaaaa, iface_type=iface_type@entry=80) at /build/buildd/glib2.0-2.33.2/./gobject/gtype.c:3994 xfce_appfinder_window_icon_theme_changed (window=0x7f97d199c010) at appfinder-window.c:1452 _g_closure_invoke_va (closure=0x7f97d1b4acd0, return_value=0x0, instance=0x7f97d1980080, args=0x7fff90759a48, n_params=0, param_types=0x0) at /build/buildd/glib2.0-2.33.2/./gobject/gclosure.c:840 g_signal_emit_valist (instance=0x7f97d1980080, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7fff90759a48) at /build/buildd/glib2.0-2.33.2/./gobject/gsignal.c:3207 g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.33.2/./gobject/gsignal.c:3352
StacktraceTop: check_instance_ cast (type_instance= 0xaaaaaaaaaaaaa aaa, iface_type= iface_type@ entry=80) at /build/ buildd/ glib2.0- 2.33.2/ ./gobject/ gtype.c: 3994 _window_ icon_theme_ changed (window= 0x7f97d199c010) at appfinder- window. c:1452 invoke_ va (closure= 0x7f97d1b4acd0, return_value=0x0, instance= 0x7f97d1980080, args=0x7fff9075 9a48, n_params=0, param_types=0x0) at /build/ buildd/ glib2.0- 2.33.2/ ./gobject/ gclosure. c:840 emit_valist (instance= 0x7f97d1980080, signal_ id=<optimized out>, detail=0, var_args= var_args@ entry=0x7fff907 59a48) at /build/ buildd/ glib2.0- 2.33.2/ ./gobject/ gsignal. c:3207 <optimized out>, signal_ id=<optimized out>, detail=<optimized out>) at /build/ buildd/ glib2.0- 2.33.2/ ./gobject/ gsignal. c:3352
g_type_
xfce_appfinder
_g_closure_
g_signal_
g_signal_emit (instance=