[Freeciv-Dev] (PR#4240) gtk2 client: next button dumps core

["Raimar Falke" <rf13@xxxxxxxxxxxxxxxxx>]

If you only have one city and press the next-city button in the city
dialog you get this core dump:

#0  genlist_get (pgenlist=0x81e6338, idx=0) at genlist.c:61
#1  0x08071986 in switch_city_callback (w=0x0, data=0x8503b10) at citydlg.c:2781
#2  0x4037ecaa in g_cclosure_marshal_VOID__VOID () from 
/usr/lib/libgobject-2.0.so.0
#3  0x40369f7a in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#4  0x4037de7f in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#5  0x4037c61e in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#6  0x4037c89b in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#7  0x4006b4e7 in gtk_button_clicked () from /usr/lib/libgtk-x11-2.0.so.0
#8  0x4006c5a1 in _gtk_button_paint () from /usr/lib/libgtk-x11-2.0.so.0
#9  0x4037ecaa in g_cclosure_marshal_VOID__VOID () from 
/usr/lib/libgobject-2.0.so.0
#10 0x4036a373 in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0
#11 0x40369f7a in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#12 0x4037d8f8 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#13 0x4037c61e in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#14 0x4037c89b in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#15 0x4006b45b in gtk_button_released () from /usr/lib/libgtk-x11-2.0.so.0
#16 0x4006c3e1 in _gtk_button_paint () from /usr/lib/libgtk-x11-2.0.so.0
#17 0x400eabe9 in _gtk_marshal_BOOLEAN__BOXED () from 
/usr/lib/libgtk-x11-2.0.so.0
#18 0x4036a373 in g_cclosure_new_swap () from /usr/lib/libgobject-2.0.so.0
#19 0x40369f7a in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#20 0x4037e278 in g_signal_emit_by_name () from /usr/lib/libgobject-2.0.so.0
#21 0x4037c688 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#22 0x4037c89b in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#23 0x401b7b68 in gtk_widget_send_expose () from /usr/lib/libgtk-x11-2.0.so.0
#24 0x400eaa9d in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#25 0x400e991d in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#26 0x4028c3c7 in _gdk_events_queue () from /usr/lib/libgdk-x11-2.0.so.0
#27 0x403bdc02 in g_get_current_time () from /usr/lib/libglib-2.0.so.0
#28 0x403bea19 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#29 0x403bedac in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0x403bf452 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#31 0x400e8ff3 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#32 0x0808150e in ui_main (argc=1, argv=0xbffff2c4) at gui_main.c:1180
#33 0x080543d7 in main (argc=2, argv=0xbffff2c4) at civclient.c:238
#34 0x404501c4 in __libc_start_main () from /lib/libc.so.6

        Raimar

-- 
 email: rf13@xxxxxxxxxxxxxxxxx
 "Any sufficiently advanced technology is indistinguishable from magic."
    -- Arthur C. Clarke