Release registry observed_paths and components if they are broken

Registry caches might be broken in a disk.

BUG=rhbz#1187956
TEST=src/libibus.so

Review URL: https://codereview.appspot.com/200980043

1 files changed, 17 insertions, 3 deletions

diff --git a/src/ibusregistry.c b/src/ibusregistry.c
index 2830a087..8e9ada94 100644
--- a/src/ibusregistry.c
+++ b/src/ibusregistry.c
@@ -1,9 +1,9 @@
 /* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
 /* vim:set et sts=4: */
 /* bus - The Input Bus
- * Copyright (C) 2013 Peng Huang <shawn.p.huang@gmail.com>
- * Copyright (C) 2013 Takao Fujiwara <takao.fujiwara1@gmail.com>
- * Copyright (C) 2013 Red Hat, Inc.
+ * Copyright (C) 2015 Peng Huang <shawn.p.huang@gmail.com>
+ * Copyright (C) 2015 Takao Fujiwara <takao.fujiwara1@gmail.com>
+ * Copyright (C) 2015 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -374,12 +374,26 @@ ibus_registry_check_modification (IBusRegistry *registry)
     g_assert (IBUS_IS_REGISTRY (registry));
 
     for (p = registry->priv->observed_paths; p != NULL; p = p->next) {
+        if (!IBUS_IS_OBSERVED_PATH (p->data)) {
+            g_warning ("The registry cache of observed_paths might be " \
+                       "broken and have to generate the cache again.");
+            g_list_free_full (registry->priv->observed_paths, g_object_unref);
+            registry->priv->observed_paths = NULL;
+            return TRUE;
+        }
         if (ibus_observed_path_check_modification (
                     (IBusObservedPath *) p->data))
             return TRUE;
     }
 
     for (p = registry->priv->components; p != NULL; p = p->next) {
+        if (!IBUS_IS_COMPONENT (p->data)) {
+            g_warning ("The registry cache of components might be " \
+                       "broken and have to generate the cache again.");
+            g_list_free_full (registry->priv->components, g_object_unref);
+            registry->priv->components = NULL;
+            return TRUE;
+        }
         if (ibus_component_check_modification ((IBusComponent *) p->data))
             return TRUE;
     }