#0  maybe_add_app_id (canonical_app_id=0x40000002 <error: Cannot access memory at address 0x40000002>, panel=0x5593e1ad0e10) at cc-notifications-panel.c:368
  363:   gchar *path;
  364:   gchar *full_app_id;
  365:   GSettings *settings;
  366:   GAppInfo *app_info;
  367: 
  368:   if (*canonical_app_id == '\0')
  369:     return;
  370: 
  371:   if (g_hash_table_contains (panel->known_applications,
  372:                              canonical_app_id))
  373:     return;
#1  children_changed (settings=<optimized out>, key=<optimized out>, panel=0x5593e1ad0e10) at cc-notifications-panel.c:548
  543: 
  544:   g_settings_get (panel->master_settings,
  545:                   "application-children",
  546:                   "^as", &new_app_ids);
  547:   for (i = 0; new_app_ids[i]; i++)
  548:     maybe_add_app_id (panel, new_app_ids[i]);
  549:   g_strfreev (new_app_ids);
  550: }
  551: 
  552: static void
  553: build_app_store (CcNotificationsPanel *panel)
#2  0x00007f89bc33af9d in g_closure_invoke (closure=0x5593e1d0a560, return_value=0x0, n_param_values=2, param_values=0x7ffcf3402630, invocation_hint=0x7ffcf34025b0) at ../../../../gobject/gclosure.c:804
  [Error: gclosure.c was not found in source tree]
#3  0x00007f89bc34dcde in signal_emit_unlocked_R (node=node@entry=0x5593e15ab3f0, detail=detail@entry=4534, instance=instance@entry=0x5593e1c75b50, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7ffcf3402630) at ../../../../gobject/gsignal.c:3635
  [Error: gsignal.c was not found in source tree]
#4  0x00007f89bc3564b5 in g_signal_emit_valist (instance=0x5593e1c75b50, signal_id=<optimized out>, detail=4534, var_args=var_args@entry=0x7ffcf3402800) at ../../../../gobject/gsignal.c:3391
  [Error: gsignal.c was not found in source tree]
#5  0x00007f89bc356ecf in g_signal_emit (instance=instance@entry=0x5593e1c75b50, signal_id=<optimized out>, detail=<optimized out>) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#6  0x00007f89bc68c942 in g_settings_real_change_event (settings=0x5593e1c75b50, keys=0x7ffcf3402ee4, n_keys=<optimized out>) at ../../../../gio/gsettings.c:386
  [Error: gsettings.c was not found in source tree]
#7  0x00007f89aae30e18 in ffi_call_unix64 () at ../src/x86/unix64.S:76
  [Error: unix64.S was not found in source tree]
#8  0x00007f89aae3087a in ffi_call (cif=cif@entry=0x7ffcf3402b50, fn=fn@entry=0x7f89bc68c8e0 <g_settings_real_change_event>, rvalue=<optimized out>, avalue=avalue@entry=0x7ffcf3402a40) at ../src/x86/ffi64.c:525
  [Error: ffi64.c was not found in source tree]
#9  0x00007f89bc33bb8d in g_cclosure_marshal_generic_va (closure=0x5593e15ab540, return_value=0x7ffcf3402d20, instance=<optimized out>, args_list=<optimized out>, marshal_data=<optimized out>, n_params=2, param_types=0x5593e156bd80) at ../../../../gobject/gclosure.c:1604
  [Error: gclosure.c was not found in source tree]
#10 0x00007f89bc33b1d6 in _g_closure_invoke_va (closure=0x5593e15ab540, return_value=0x7ffcf3402d20, instance=0x5593e1c75b50, args=0x7ffcf3402df0, n_params=2, param_types=0x5593e156bd80) at ../../../../gobject/gclosure.c:867
  [Error: gclosure.c was not found in source tree]
#11 0x00007f89bc35616d in g_signal_emit_valist (instance=0x5593e1c75b50, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7ffcf3402df0) at ../../../../gobject/gsignal.c:3300
  [Error: gsignal.c was not found in source tree]
#12 0x00007f89bc356ecf in g_signal_emit (instance=instance@entry=0x5593e1c75b50, signal_id=<optimized out>, detail=detail@entry=0) at ../../../../gobject/gsignal.c:3447
  [Error: gsignal.c was not found in source tree]
#13 0x00007f89bc68c5b8 in settings_backend_changed (target=0x5593e1c75b50, backend=<optimized out>, key=<optimized out>, origin_tag=<optimized out>) at ../../../../gio/gsettings.c:446
  [Error: gsettings.c was not found in source tree]
#14 0x00007f89bc687a8f in g_settings_backend_invoke_closure (user_data=0x5593e1c6cc00) at ../../../../gio/gsettingsbackend.c:267
  [Error: gsettingsbackend.c was not found in source tree]
#15 0x00007f89bc061e25 in g_main_dispatch (context=0x5593e15abd20) at ../../../../glib/gmain.c:3148
  [Error: gmain.c was not found in source tree]
#16 g_main_context_dispatch (context=context@entry=0x5593e15abd20) at ../../../../glib/gmain.c:3813
  [Error: gmain.c was not found in source tree]
#17 0x00007f89bc0621f0 in g_main_context_iterate (context=context@entry=0x5593e15abd20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3886
  [Error: gmain.c was not found in source tree]
#18 0x00007f89bc06227c in g_main_context_iteration (context=context@entry=0x5593e15abd20, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3947
  [Error: gmain.c was not found in source tree]
#19 0x00007f89bc61fc4d in g_application_run (application=0x5593e15fa650, argc=<optimized out>, argv=<optimized out>) at ../../../../gio/gapplication.c:2401
  [Error: gapplication.c was not found in source tree]
#20 0x00005593df63b891 in main (argc=<optimized out>, argv=<optimized out>) at main.c:57
  52: #ifdef HAVE_CHEESE
  53:   cheese_gtk_init (&argc, &argv);
  54: #endif /* HAVE_CHEESE */
  55: 
  56:   application = cc_application_new ();
  57:   status = g_application_run (G_APPLICATION (application), argc, argv);
  58: 
  59:   g_object_unref (application);
  60: 
  61:   return status;
  62: }