Program received signal SIGSEGV, Segmentation fault.
0x280a7259 in etk_drag_types_set (drag=0x0, types=0x8097220, num_types=1)
    at etk_drag.c:62
62         drag->types = malloc(num_types * sizeof(char *));
(gdb) bt
#0  0x280a7259 in etk_drag_types_set (drag=0x0, types=0x8097220, num_types=1)
    at etk_drag.c:62
#1  0x08057150 in _ex_tab_tree_drag_begin_cb (object=0x8279400, data=0x8271000)
    at exhibit_tab.c:376
#2  0x280b1c74 in etk_marshaller_VOID__VOID (
    callback=0x8056d5c <_ex_tab_tree_drag_begin_cb>, object=0x8279400, 
    data=0x8271000, return_value=0x0, arguments=0xbfbfe68c "xÏ\r(\222\002")
    at etk_marshallers.c:15
#3  0x280c0837 in etk_signal_callback_call_valist (callback=0x827a690, 
    object=0x8279400, return_value=0x0, args=0xbfbfe68c "xÏ\r(\222\002")
    at etk_signal_callback.c:95
#4  0x280c03f7 in etk_signal_emit_valist (signal=0x8073180, object=0x8279400, 
    return_value=0x0, args=0xbfbfe68c "xÏ\r(\222\002") at etk_signal.c:375
#5  0x280c0232 in etk_signal_emit (signal=0x8073180, object=0x8279400, 
    return_value=0x0) at etk_signal.c:296
#6  0x280dcfaf in etk_widget_drag_begin (widget=0x8279400) at etk_widget.c:1802
#7  0x280a730b in etk_drag_begin (drag=0x8279c00) at etk_drag.c:80
#8  0x280d5d1c in _etk_tree_row_mouse_move_cb (data=0x833c620, e=0x8063b00, 
    obj=0x8342a00, event_info=0xbfbfe760) at etk_tree.c:2080
#9  0x285a2b4f in evas_object_event_callback_call (obj=0x8342a00, 
    type=EVAS_CALLBACK_MOUSE_MOVE, event_info=0xbfbfe760)
    at evas_callbacks.c:189
#10 0x285a2bdc in evas_object_event_callback_call (obj=0x8343000, 
    type=EVAS_CALLBACK_MOUSE_MOVE, event_info=0xbfbfe760)
    at evas_callbacks.c:200
#11 0x285a4bbb in evas_event_feed_mouse_move (e=0x8063b00, x=69, y=594, 
    timestamp=1612227, data=0x0) at evas_events.c:504
#12 0x281edf1a in _ecore_evas_x_mouse_move_process (ee=0x8088a00, x=69, y=594, 
    timestamp=1612227) at ecore_evas_x.c:322
#13 0x281eec60 in _ecore_evas_x_event_mouse_move (data=0x0, type=14, 
    event=0x8096aa0) at ecore_evas_x.c:639
#14 0x2842e76f in _ecore_event_call () at ecore_events.c:430
#15 0x28435b08 in _ecore_main_loop_iterate_internal (once_only=0)
    at ecore_main.c:639
#16 0x28434bdc in ecore_main_loop_begin () at ecore_main.c:79
#17 0x280b18f1 in etk_main () at etk_main.c:168
#18 0x08053c5e in main (argc=1, argv=0xbfbfe950) at exhibit_main.c:938