#0  INT_cairo_surface_set_device_offset (surface=0x0, x_offset=<unavailable>, y_offset=<unavailable>) at /build/buildd/cairo-1.10.2/src/cairo-surface.c:1269
        status = <optimized out>
        __PRETTY_FUNCTION__ = "cairo_surface_set_device_offset"
#1  0x00000000004d1156 in drag_begin_callback (widget=<optimized out>, context=0x3ba08d0, data=<optimized out>) at nautilus-icon-dnd.c:1313
        container = 0x1f28600
        surface = 0x0
        x1 = 2.4951896125049642e-317
        y1 = 6.9108789581854285e-310
        x2 = 2.5650852770483837e-316
        y2 = 6.9108789568545144e-310
        winx = 2.4951896125049642e-317
        winy = 6.9108789581854285e-310
        x_offset = <optimized out>
        y_offset = <optimized out>
#2  0x00007f37d370ae72 in g_closure_invoke (closure=0x3183450, return_value=0x0, n_param_values=2, param_values=0x34bb520, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gclosure.c:777
        marshal = 0x42ac40 <g_cclosure_marshal_VOID__OBJECT@plt>
        marshal_data = <optimized out>
        in_marshal = <optimized out>
        real_closure = 0x3183430
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#3  0x00007f37d371c943 in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=<optimized out>, emission_return=0x0, instance_and_params=0x34bb520) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3547
        tmp = <optimized out>
        handler = 0x317c610
        accumulator = 0x0
        emission = {next = 0x7fffe1c0af50, instance = 0x1f28600, ihint = {signal_id = 67, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x1aed980
        hlist = 0x0
        handler_list = 0x317c610
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 67
        max_sequential_handler_number = 66668
        return_value_altered = 0
#4  0x00007f37d37250ad in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=0, var_args=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3295
        instance_and_params = 0x34bb520
        signal_return_type = 4
        param_values = 0x34bb538
        node = 0x1aed9d0
        i = <optimized out>
        n_params = 1
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#5  0x00007f37d37257f4 in g_signal_emit_by_name (instance=0x1f28600, detailed_signal=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3389
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffe1c0abb0, reg_save_area = 0x7fffe1c0aac0}}
        detail = <optimized out>
        signal_id = 67
        __PRETTY_FUNCTION__ = "g_signal_emit_by_name"
#6  0x00007f37d51f5ec3 in gtk_drag_begin_internal (widget=0x1f28600, site=0x0, target_list=0x31b9740, actions=46, button=1, event=<optimized out>) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkdnd.c:2571
        info = 0x37999c0
        targets = <optimized out>
        tmp_list = <optimized out>
        time = 2892433
        possible_actions = 46
        suggested_action = GDK_ACTION_COPY
        context = <optimized out>
        ipc_widget = 0x2d0bb10
        cursor = 0x365b640
        pointer = 0x1adf920
        keyboard = <optimized out>
        ipc_window = 0x3503000
#7  0x00000000004c4b37 in motion_notify_event (widget=0x1f28600, event=0x3b21a50) at nautilus-icon-container.c:4741
        container = 0x1f28600
        details = 0x2785000
        world_x = 67.219879150390625
        world_y = 87.416671752929688
        canvas_x = 58
        canvas_y = 93
        actions = <optimized out>
        __PRETTY_FUNCTION__ = "motion_notify_event"
#8  0x00007f37d508b3b1 in _gtk_marshal_BOOLEAN__BOXEDv (closure=0x1ae8880, return_value=0x7fffe1c0afa0, instance=0x1f28600, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0x1ae88b0) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmarshalers.c:130
        cc = 0x1ae8880
        data1 = <optimized out>
        data2 = <optimized out>
        callback = <optimized out>
        arg0 = 0x3b21a50
        args_copy = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fffe1c0b120, reg_save_area = 0x7fffe1c0b060}}
        v_return = <optimized out>
        __PRETTY_FUNCTION__ = "_gtk_marshal_BOOLEAN__BOXEDv"
#9  0x00007f37d370b09a in _g_closure_invoke_va (closure=0x1ae8880, return_value=0x7fffe1c0afa0, instance=0x1f28600, args=0x7fffe1c0b048, n_params=1, param_types=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gclosure.c:840
        marshal = 0x7f37d37094c0 <g_type_class_meta_marshalv>
        marshal_data = <optimized out>
        in_marshal = 0
        real_closure = 0x1ae8860
        __PRETTY_FUNCTION__ = "_g_closure_invoke_va"
#10 0x00007f37d3724bc5 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=0, var_args=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3206
        return_accu = <optimized out>
        accu = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x1ae8940
        emission = {next = 0x0, instance = 0x1f28600, ihint = {signal_id = 45, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 32615232}
        signal_id = <optimized out>
        emission_return = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 20
        static_scope = 0
        closure = 0x1ae8880
        run_type = <optimized out>
        hlist = 0x5
        l = <optimized out>
        fastpath = 1
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        node = 0x1ae88d0
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#11 0x00007f37d37252e2 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.31.20/./gobject/gsignal.c:3352
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffe1c0b120, reg_save_area = 0x7fffe1c0b060}}
#12 0x00007f37d51d1599 in gtk_widget_event_internal (widget=0x1f28600, event=0x3b21a50) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkwidget.c:6380
        signal_num = <optimized out>
        return_val = 0
#13 0x00007f37d508913b in propagate_event_up (topmost=<optimized out>, event=<optimized out>, widget=0x1f28600) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmain.c:2404
        tmp = <optimized out>
        handled_event = <optimized out>
#14 propagate_event (widget=<optimized out>, event=0x3b21a50, captured=<optimized out>, topmost=0x0) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmain.c:2504
        handled_event = 0
        propagate_func = <optimized out>
#15 0x00007f37d508af41 in gtk_main_do_event (event=0x3b21a50) at /build/buildd/gtk+3.0-3.3.18/./gtk/gtkmain.c:1717
        event_widget = <optimized out>
        grab_widget = 0x1f28600
        topmost_widget = <optimized out>
        window_group = <optimized out>
        rewritten_event = <optimized out>
        device = <optimized out>
        tmp_list = <optimized out>
        __PRETTY_FUNCTION__ = "gtk_main_do_event"
#16 0x00007f37d4cbb022 in gdk_event_source_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+3.0-3.3.18/./gdk/x11/gdkeventsource.c:358
        display = <optimized out>
        event = 0x3b21a50
#17 0x00007f37d344ddda in g_main_dispatch (context=0x1b1e4d0) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:2510
        dispatch = 0x7f37d4cbb000 <gdk_event_source_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x1b1c0e0, next = 0x0}
        need_destroy = <optimized out>
        source = 0x1b1c0e0
        current = 0x1c19a40
        i = <optimized out>
#18 g_main_context_dispatch (context=0x1b1e4d0) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3047
No locals.
#19 0x00007f37d344e1a0 in g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1b1e4d0, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3118
        timeout = 45
        some_ready = 1
        fds = <optimized out>
        max_priority = 2147483647
        nfds = 9
        allocated_nfds = <optimized out>
#20 g_main_context_iterate (context=0x1b1e4d0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = 1
#21 0x00007f37d344e264 in g_main_context_iteration (context=0x1b1e4d0, may_block=1) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3179
        retval = <optimized out>
#22 0x00007f37d39eb864 in g_application_run (application=0x1ade040, argc=<optimized out>, argv=0x7fffe1c0b468) at /build/buildd/glib2.0-2.31.20/./gio/gapplication.c:1496
        arguments = 0x1acd080
        status = 0
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#23 0x000000000042b969 in main (argc=2, argv=0x7fffe1c0b468) at nautilus-main.c:101
        retval = <optimized out>
        application = 0x1ade040