#0  0xb749fcdf in closure_accel_activate (closure=0xb7685ff4, return_value=0x83bfb28, n_param_values=138263184, param_values=0xb7244a1c, invocation_hint=0x83dc800, marshal_data=0x0) at /build/buildd/gtk+3.0-3.1.12/./gtk/gtkwidget.c:5280
        aclosure = 0xb7685ff4
        can_activate = <optimized out>
#1  0xb74a78c8 in gtk_widget_class_init (klass=0x8714a68) at /build/buildd/gtk+3.0-3.1.12/./gtk/gtkwidget.c:962
        cpn_context = {quark_notify_queue = 20, dispatcher = 0x15, _nqueue_trash = 0x16}
        gobject_class = 0x83bfb28
        binding_set = <optimized out>
#2  0xb6e25f04 in ?? () from /tmp/tmpl8W2dd/usr/lib/i386-linux-gnu/libgio-2.0.so.0
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)