#0  st_widget_style_changed (widget=0x0) at ../src/st/st-widget.c:544
  539: st_widget_style_changed (StWidget *widget)
  540: {
  541:   StWidgetPrivate *priv = st_widget_get_instance_private (widget);
  542:   StThemeNode *old_theme_node = NULL;
  543: 
  544:   priv->is_style_dirty = TRUE;
  545:   if (priv->theme_node)
  546:     {
  547:       old_theme_node = priv->theme_node;
  548:       priv->theme_node = NULL;
  549:     }
#1  0x00007f840ef4e01c in st_scroll_view_style_changed (widget=0x55d335a1dae0) at ../src/st/st-scroll-view.c:737
  732:   StThemeNode *theme_node = st_widget_get_theme_node (widget);
  733:   gdouble vfade_offset = st_theme_node_get_length (theme_node, "-st-vfade-offset");
  734:   gdouble hfade_offset = st_theme_node_get_length (theme_node, "-st-hfade-offset");
  735:   st_scroll_view_update_fade_effect (self, vfade_offset, hfade_offset);
  736: 
  737:   st_widget_style_changed (ST_WIDGET (priv->hscroll));
  738:   st_widget_style_changed (ST_WIDGET (priv->vscroll));
  739: 
  740:   ST_WIDGET_CLASS (st_scroll_view_parent_class)->style_changed (widget);
  741: }
  742: 
#2  0x00007f84117b60e0 in _g_closure_invoke_va (closure=0x55d32eb1c590, return_value=0x0, instance=0x55d335a1dae0, args=0x7fff93fa3590, n_params=0, param_types=0x0) at ../../../../gobject/gclosure.c:867
  [Error: gclosure.c was not found in source tree]
#3  0x00007f84117d179f in g_signal_emit_valist (instance=0x55d335a1dae0, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff93fa3590) at ../../../../gobject/gsignal.c:3300
  [Error: gsignal.c was not found in source tree]
#4  0x00007f84117d1ecf in g_signal_emit (instance=instance@entry=0x55d335a1dae0, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#5  0x00007f840ef62393 in st_widget_recompute_style (widget=widget@entry=0x55d335a1dae0, old_theme_node=old_theme_node@entry=0x55d335c677a0) at ../src/st/st-widget.c:1659
  1654: 
  1655:       if (!st_theme_node_paint_equal (new_theme_node, current_paint_state (widget)->node))
  1656:         st_theme_node_paint_state_invalidate (current_paint_state (widget));
  1657:     }
  1658: 
  1659:   g_signal_emit (widget, signals[STYLE_CHANGED], 0);
  1660:   priv->is_style_dirty = FALSE;
  1661: }
  1662: 
  1663: /**
  1664:  * st_widget_ensure_style:
#6  0x00007f840ef6253b in st_widget_style_changed (widget=0x55d335a1dae0) at ../src/st/st-widget.c:553
  548:       priv->theme_node = NULL;
  549:     }
  550: 
  551:   /* update the style only if we are mapped */
  552:   if (clutter_actor_is_mapped (CLUTTER_ACTOR (widget)))
  553:     st_widget_recompute_style (widget, old_theme_node);
  554: 
  555:   if (old_theme_node)
  556:     g_object_unref (old_theme_node);
  557: }
  558: 
#7  0x00007f840ef62614 in notify_children_of_style_change (self=<optimized out>) at ../src/st/st-widget.c:525
  520: 
  521:   clutter_actor_iter_init (&iter, self);
  522:   while (clutter_actor_iter_next (&iter, &actor))
  523:     {
  524:       if (ST_IS_WIDGET (actor))
  525:         st_widget_style_changed (ST_WIDGET (actor));
  526:       else
  527:         notify_children_of_style_change (actor);
  528:     }
  529: }
  530: 
#8  0x00007f84117b60e0 in _g_closure_invoke_va (closure=0x55d32eb1c590, return_value=0x0, instance=0x55d335a1d350, args=0x7fff93fa3960, n_params=0, param_types=0x0) at ../../../../gobject/gclosure.c:867
  [Error: gclosure.c was not found in source tree]
#9  0x00007f84117d179f in g_signal_emit_valist (instance=0x55d335a1d350, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff93fa3960) at ../../../../gobject/gsignal.c:3300
  [Error: gsignal.c was not found in source tree]
#10 0x00007f84117d1ecf in g_signal_emit (instance=instance@entry=0x55d335a1d350, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#11 0x00007f840ef62393 in st_widget_recompute_style (widget=0x55d335a1d350, old_theme_node=0x0) at ../src/st/st-widget.c:1659
  1654: 
  1655:       if (!st_theme_node_paint_equal (new_theme_node, current_paint_state (widget)->node))
  1656:         st_theme_node_paint_state_invalidate (current_paint_state (widget));
  1657:     }
  1658: 
  1659:   g_signal_emit (widget, signals[STYLE_CHANGED], 0);
  1660:   priv->is_style_dirty = FALSE;
  1661: }
  1662: 
  1663: /**
  1664:  * st_widget_ensure_style:
#12 0x00007f840ef62614 in notify_children_of_style_change (self=<optimized out>) at ../src/st/st-widget.c:525
  520: 
  521:   clutter_actor_iter_init (&iter, self);
  522:   while (clutter_actor_iter_next (&iter, &actor))
  523:     {
  524:       if (ST_IS_WIDGET (actor))
  525:         st_widget_style_changed (ST_WIDGET (actor));
  526:       else
  527:         notify_children_of_style_change (actor);
  528:     }
  529: }
  530: 
#13 0x00007f84117b60e0 in _g_closure_invoke_va (closure=0x55d32eb1c590, return_value=0x0, instance=0x55d335a8af20, args=0x7fff93fa3d10, n_params=0, param_types=0x0) at ../../../../gobject/gclosure.c:867
  [Error: gclosure.c was not found in source tree]
#14 0x00007f84117d179f in g_signal_emit_valist (instance=0x55d335a8af20, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff93fa3d10) at ../../../../gobject/gsignal.c:3300
  [Error: gsignal.c was not found in source tree]
#15 0x00007f84117d1ecf in g_signal_emit (instance=instance@entry=0x55d335a8af20, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#16 0x00007f840ef62393 in st_widget_recompute_style (widget=widget@entry=0x55d335a8af20, old_theme_node=old_theme_node@entry=0x55d332f9a450) at ../src/st/st-widget.c:1659
  1654: 
  1655:       if (!st_theme_node_paint_equal (new_theme_node, current_paint_state (widget)->node))
  1656:         st_theme_node_paint_state_invalidate (current_paint_state (widget));
  1657:     }
  1658: 
  1659:   g_signal_emit (widget, signals[STYLE_CHANGED], 0);
  1660:   priv->is_style_dirty = FALSE;
  1661: }
  1662: 
  1663: /**
  1664:  * st_widget_ensure_style:
#17 0x00007f840ef6253b in st_widget_style_changed (widget=0x55d335a8af20) at ../src/st/st-widget.c:553
  548:       priv->theme_node = NULL;
  549:     }
  550: 
  551:   /* update the style only if we are mapped */
  552:   if (clutter_actor_is_mapped (CLUTTER_ACTOR (widget)))
  553:     st_widget_recompute_style (widget, old_theme_node);
  554: 
  555:   if (old_theme_node)
  556:     g_object_unref (old_theme_node);
  557: }
  558: 
#18 0x00007f840ef62614 in notify_children_of_style_change (self=<optimized out>) at ../src/st/st-widget.c:525
  520: 
  521:   clutter_actor_iter_init (&iter, self);
  522:   while (clutter_actor_iter_next (&iter, &actor))
  523:     {
  524:       if (ST_IS_WIDGET (actor))
  525:         st_widget_style_changed (ST_WIDGET (actor));
  526:       else
  527:         notify_children_of_style_change (actor);
  528:     }
  529: }
  530: 
#19 0x00007f84117b61d6 in _g_closure_invoke_va (closure=0x55d32eb1c590, return_value=0x0, instance=0x55d335a8db20, args=0x7fff93fa40e0, n_params=0, param_types=0x0) at ../../../../gobject/gclosure.c:867
  [Error: gclosure.c was not found in source tree]
#20 0x00007f84117d179f in g_signal_emit_valist (instance=0x55d335a8db20, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff93fa40e0) at ../../../../gobject/gsignal.c:3300
  [Error: gsignal.c was not found in source tree]
#21 0x00007f84117d1ecf in g_signal_emit (instance=instance@entry=0x55d335a8db20, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#22 0x00007f840ef62393 in st_widget_recompute_style (widget=0x55d335a8db20, old_theme_node=0x0) at ../src/st/st-widget.c:1659
  1654: 
  1655:       if (!st_theme_node_paint_equal (new_theme_node, current_paint_state (widget)->node))
  1656:         st_theme_node_paint_state_invalidate (current_paint_state (widget));
  1657:     }
  1658: 
  1659:   g_signal_emit (widget, signals[STYLE_CHANGED], 0);
  1660:   priv->is_style_dirty = FALSE;
  1661: }
  1662: 
  1663: /**
  1664:  * st_widget_ensure_style:
#23 0x00007f840ef62c18 in st_widget_remove_style_pseudo_class (actor=0x55d335a8db20, pseudo_class=0x7f840ef69eaa "hover") at ../src/st/st-widget.c:1424
  1419: 
  1420:   priv = st_widget_get_instance_private (actor);
  1421: 
  1422:   if (remove_class_name (&priv->pseudo_class, pseudo_class))
  1423:     {
  1424:       st_widget_style_changed (actor);
  1425:       g_object_notify (G_OBJECT (actor), "pseudo-class");
  1426:     }
  1427: }
  1428: 
  1429: /**
#24 0x00007f840ef62eac in st_widget_set_hover (widget=0x55d335a8db20, hover=<optimized out>) at ../src/st/st-widget.c:1768
  1763:     {
  1764:       priv->hover = hover;
  1765:       if (priv->hover)
  1766:         st_widget_add_style_pseudo_class (widget, "hover");
  1767:       else
  1768:         st_widget_remove_style_pseudo_class (widget, "hover");
  1769:       g_object_notify (G_OBJECT (widget), "hover");
  1770:     }
  1771: }
  1772: 
  1773: /**
#25 0x00007f840b43ae18 in ffi_call_unix64 () at ../src/x86/unix64.S:76
  [Error: unix64.S was not found in source tree]
#26 0x00007f840b43a87a in ffi_call (cif=cif@entry=0x55d331448418, fn=<optimized out>, rvalue=<optimized out>, rvalue@entry=0x7fff93fa4498, avalue=avalue@entry=0x7fff93fa4390) at ../src/x86/ffi64.c:525
  [Error: ffi64.c was not found in source tree]
#27 0x00007f841049e3c8 in gjs_invoke_c_function (context=context@entry=0x55d32e7fe000, function=function@entry=0x55d331448400, obj=..., obj@entry=..., args=..., js_rval=..., r_value=r_value@entry=0x0) at gi/function.cpp:1033
  [Error: function.cpp was not found in source tree]
#28 0x00007f841049fca4 in function_call (context=context@entry=0x55d32e7fe000, js_argc=0, vp=0x55d32e93f250) at gi/function.cpp:1351
  [Error: function.cpp was not found in source tree]
#29 0x00007f840842ee6c in js::CallJSNative (args=..., native=0x7f841049fb40 <function_call(JSContext*, unsigned int, JS::Value*)>, cx=0x55d32e7fe000) at ./js/src/jscntxtinlines.h:239
  [Error: jscntxtinlines.h was not found in source tree]
#30 js::InternalCallOrConstruct (cx=0x55d32e7fe000, args=..., construct=js::NO_CONSTRUCT) at ./js/src/vm/Interpreter.cpp:447
  [Error: Interpreter.cpp was not found in source tree]
#31 0x00007f8408421eca in js::CallFromStack (args=..., cx=<optimized out>) at ./js/src/vm/Interpreter.cpp:510
  [Error: Interpreter.cpp was not found in source tree]
#32 Interpret (cx=0x55d32e7fe000, state=...) at ./js/src/vm/Interpreter.cpp:2922
  [Error: Interpreter.cpp was not found in source tree]
#33 0x00007f840842e6d6 in js::RunScript (cx=cx@entry=0x55d32e7fe000, state=...) at ./js/src/vm/Interpreter.cpp:405
  [Error: Interpreter.cpp was not found in source tree]
#34 0x00007f840842ecaf in js::InternalCallOrConstruct (cx=cx@entry=0x55d32e7fe000, args=..., construct=construct@entry=js::NO_CONSTRUCT) at ./js/src/vm/Interpreter.cpp:477
  [Error: Interpreter.cpp was not found in source tree]
#35 0x00007f840842ef29 in InternalCall (cx=cx@entry=0x55d32e7fe000, args=...) at ./js/src/vm/Interpreter.cpp:504
  [Error: Interpreter.cpp was not found in source tree]
#36 0x00007f840842ef89 in js::Call (cx=cx@entry=0x55d32e7fe000, fval=..., fval@entry=..., thisv=..., thisv@entry=..., args=..., rval=rval@entry=...) at ./js/src/vm/Interpreter.cpp:523
  [Error: Interpreter.cpp was not found in source tree]
#37 0x00007f8408222d09 in js::jit::InvokeFunction (cx=0x55d32e7fe000, obj=..., constructing=<optimized out>, argc=<optimized out>, argv=0x7fff93fa51d0, rval=...) at ./js/src/jit/VMFunctions.cpp:114
  [Error: VMFunctions.cpp was not found in source tree]
#38 0x0000160463c5b3c6 in ?? ()
#39 0x000055d32e7fe000 in ?? ()
#40 0x00007fff93fa5188 in ?? ()
#41 0x00007fff93fa51f8 in ?? ()
#42 0xfff9000000000000 in ?? ()
#43 0x00007f8409510360 in ?? () from /tmp/apport_sandbox_Qi_fmt/usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#44 0x00007f83e43739a0 in ?? ()
#45 0x000016046412751d in ?? ()
#46 0x0000000000007020 in ?? ()
#47 0x00007f8393f6f340 in ?? ()
#48 0x0000000000000000 in ?? ()