.
Thread 2 (Thread 0x7f97c2919700 (LWP 1918)):
#0  0x00007f97cd062b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f97cd380aa4 in g_main_context_poll (n_fds=1, fds=0x7f97bc002cf0, timeout=-1, context=0x7f97d1cb8100, priority=<optimized out>) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:3440
        poll_func = 0x7f97cd38e930 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x7f97d1cb8100, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:3141
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f97bc002cf0
#3  0x00007f97cd380bc4 in g_main_context_iteration (context=0x7f97d1cb8100, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:3207
        retval = <optimized out>
#4  0x00007f97cd380c11 in glib_worker_main (data=<optimized out>) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:4879
No locals.
#5  0x00007f97cd3a3705 in g_thread_proxy (data=0x7f97d1c8e540) at /build/buildd/glib2.0-2.33.2/./glib/gthread.c:801
        thread = 0x7f97d1c8e540
#6  0x00007f97cd885e9a in start_thread (arg=0x7f97c2919700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f97c2919700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -8941603535950208510, 140735617011456, 140289781111232, 0, 3, 8991031857351991810, 8991034122341163522}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f97cd06e4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f97cf7bf980 (LWP 1915)):
#0  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
No locals.
#1  0x00007f97cf7fc47a in xfce_appfinder_window_icon_theme_changed (window=0x7f97d199c010) at appfinder-window.c:1452
No locals.
#2  0x00007f97cd63e317 in _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
        marshal = 0x7f97cd63ff30 <g_cclosure_marshal_VOID__VOIDv>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x7f97d1b4acb0
        __PRETTY_FUNCTION__ = "_g_closure_invoke_va"
#3  0x00007f97cd657ac8 in 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
        return_accu = <optimized out>
        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}}}
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x7f97d1980080, ihint = {signal_id = 103, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 140290033325856}
        signal_id = <optimized out>
        instance_type = <optimized out>
        emission_return = {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}}}
        rtype = 4
        static_scope = 0
        closure = 0x7f97d1b4acd0
        run_type = <optimized out>
        hlist = 0x0
        l = <optimized out>
        fastpath = 4
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        node = 0x7f97d19aeb40
        i = <optimized out>
        n_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#4  0x00007f97cd658202 in 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
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff90759b20, reg_save_area = 0x7fff90759a60}}
#5  0x00007f97cee7c757 in do_theme_change (icon_theme=0x7f97d1980080) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkicontheme.c:635
        priv = 0x7f97d19800a0
#6  0x00007f97cee7c8b6 in update_current_theme (icon_theme=0x7f97d1980080) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkicontheme.c:439
        theme = 0x7f97d1cb7b50 "hicolor"
        fallback_theme = 0x7f97d1b43790 "`\332\234\321\227\177"
        changed = <optimized out>
        priv = 0x7f97d19800a0
#7  0x00007f97cd63e050 in g_closure_invoke (closure=0x7f97d19ca020, return_value=0x0, n_param_values=2, param_values=0x7fff90759d60, invocation_hint=0x7fff90759d00) at /build/buildd/glib2.0-2.33.2/./gobject/gclosure.c:777
        marshal = 0x7f97cd640fc0 <g_cclosure_marshal_VOID__PARAM>
        marshal_data = 0x0
        in_marshal = 0
        real_closure = 0x7f97d19ca000
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#8  0x00007f97cd64fd30 in signal_emit_unlocked_R (node=node@entry=0x7f97d19675b0, detail=detail@entry=400, instance=instance@entry=0x7f97d198b540, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff90759d60) at /build/buildd/glib2.0-2.33.2/./gobject/gsignal.c:3547
        tmp = <optimized out>
        handler = 0x7f97d19b8d90
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x7f97d198b540, ihint = {signal_id = 1, detail = 400, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x7f97d1964430
        hlist = 0x7f97d199a630
        handler_list = 0x7f97d199a630
        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 = 1
        max_sequential_handler_number = 507
        return_value_altered = 1
#9  0x00007f97cd657fb1 in g_signal_emit_valist (instance=0x7f97d198b540, signal_id=<optimized out>, detail=400, var_args=var_args@entry=0x7fff90759fb8) at /build/buildd/glib2.0-2.33.2/./gobject/gsignal.c:3296
        instance_and_params = 0x7fff90759d60
        signal_return_type = 4
        param_values = 0x7fff90759d78
        node = 0x7f97d19675b0
        i = <optimized out>
        n_params = 1
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#10 0x00007f97cd658202 in 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
        var_args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff9075a090, reg_save_area = 0x7fff90759fd0}}
#11 0x00007f97cd642b95 in g_object_dispatch_properties_changed (object=0x7f97d198b540, n_pspecs=80, pspecs=0x7f97d1980080) at /build/buildd/glib2.0-2.33.2/./gobject/gobject.c:1041
No locals.
#12 0x00007f97cd64464b in g_object_notify_by_spec_internal (pspec=0x7f97d1997d90, object=0x7f97d198b540) at /build/buildd/glib2.0-2.33.2/./gobject/gobject.c:1135
        nqueue = 0x0
        notify_pspec = 0x7f97d1997d90
#13 g_object_notify (object=0x7f97d198b540, property_name=<optimized out>) at /build/buildd/glib2.0-2.33.2/./gobject/gobject.c:1177
        pspec = 0x7f97d1997d90
        __PRETTY_FUNCTION__ = "g_object_notify"
#14 0x00007f97cef1c6c3 in _gtk_settings_handle_event (event=<optimized out>) at /build/buildd/gtk+2.0-2.24.10/gtk/gtksettings.c:1967
        settings = 0x7f97d198b540
        pspec = 0x7f97d1997d90
        property_id = <optimized out>
#15 0x00007f97ceead425 in IA__gtk_main_do_event (event=0x7f97d1bd2ce0) at /build/buildd/gtk+2.0-2.24.10/gtk/gtkmain.c:1572
        event_widget = <optimized out>
        grab_widget = <optimized out>
        window_group = <optimized out>
        rewritten_event = 0x0
        tmp_list = <optimized out>
        __PRETTY_FUNCTION__ = "IA__gtk_main_do_event"
#16 0x00007f97ce912cac in gdk_event_dispatch (source=<optimized out>, source@entry=0x7f97d1983830, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+2.0-2.24.10/gdk/x11/gdkevents-x11.c:2377
        display = <optimized out>
        event = 0x7f97d1bd2ce0
#17 0x00007f97cd3807d5 in g_main_dispatch (context=0x7f97d1983920) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:2539
        dispatch = 0x7f97ce912c60 <gdk_event_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x7f97d1983830, next = 0x0}
        need_destroy = <optimized out>
        source = 0x7f97d1983830
        current = 0x7f97d1a39080
        i = <optimized out>
#18 g_main_context_dispatch (context=context@entry=0x7f97d1983920) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:3075
No locals.
#19 0x00007f97cd380b08 in g_main_context_iterate (context=0x7f97d1983920, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:3146
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x7f97d1b4b050
#20 0x00007f97cd380f02 in g_main_loop_run (loop=0x7f97d1b46be0) at /build/buildd/glib2.0-2.33.2/./glib/gmain.c:3340
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#21 0x00007f97ceeac2f7 in IA__gtk_main () at /build/buildd/gtk+2.0-2.24.10/gtk/gtkmain.c:1329
        tmp_list = <optimized out>
        functions = 0x0
        init = <optimized out>
        loop = 0x7f97d1b46be0
#22 0x00007f97cf7f3e84 in main (argc=1, argv=0x7fff9075a498) at main.c:582
        error = 0x0
        desktop = <optimized out>
        dbus_connection = 0x7f97d1985910
        startup_id = <optimized out>
        windows_destroy = <optimized out>
        signums = {2, 3, 15, 6}