StacktraceTop: g_type_check_instance (type_instance=type_instance@entry=0x2bb5dc0) at /build/buildd/glib2.0-2.37.3/./gobject/gtype.c:4082 g_signal_handlers_disconnect_matched (instance=0x2bb5dc0, mask=mask@entry=(G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA), signal_id=signal_id@entry=0, detail=detail@entry=0, closure=closure@entry=0x0, func=func@entry=0x7fc349806c20 <toolbar_item_visiblity_notify_cb>, data=data@entry=0x2b29b50) at /build/buildd/glib2.0-2.37.3/./gobject/gsignal.c:2874 toolbar_content_remove (content=content@entry=0x2c7e540, toolbar=toolbar@entry=0x2b29b50) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtktoolbar.c:3315 gtk_toolbar_stop_sliding (toolbar=toolbar@entry=0x2b29b50) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtktoolbar.c:1389 toolbar_content_new_tool_item (toolbar=0x2b29b50, item=item@entry=0x2b5ddd0, is_placeholder=is_placeholder@entry=0, pos=1) at /build/buildd/gtk+3.0-3.8.2/./gtk/gtktoolbar.c:3297
StacktraceTop: check_instance (type_instance= type_instance@ entry=0x2bb5dc0 ) at /build/ buildd/ glib2.0- 2.37.3/ ./gobject/ gtype.c: 4082 handlers_ disconnect_ matched (instance= 0x2bb5dc0, mask=mask@ entry=( G_SIGNAL_ MATCH_FUNC | G_SIGNAL_ MATCH_DATA) , signal_ id=signal_ id@entry= 0, detail= detail@ entry=0, closure= closure@ entry=0x0, func=func@ entry=0x7fc3498 06c20 <toolbar_ item_visiblity_ notify_ cb>, data=data@ entry=0x2b29b50 ) at /build/ buildd/ glib2.0- 2.37.3/ ./gobject/ gsignal. c:2874 content_ remove (content= content@ entry=0x2c7e540 , toolbar= toolbar@ entry=0x2b29b50 ) at /build/ buildd/ gtk+3.0- 3.8.2/. /gtk/gtktoolbar .c:3315 stop_sliding (toolbar= toolbar@ entry=0x2b29b50 ) at /build/ buildd/ gtk+3.0- 3.8.2/. /gtk/gtktoolbar .c:1389 content_ new_tool_ item (toolbar=0x2b29b50, item=item@ entry=0x2b5ddd0 , is_placeholder= is_placeholder@ entry=0, pos=1) at /build/ buildd/ gtk+3.0- 3.8.2/. /gtk/gtktoolbar .c:3297
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