[glib] gsettings-tool: warn if setting a value fails

[Dan Winship <danw src gnome org>]

commit ea57feff96f13bbd4d03a76040a4ddfad2677310
Author: Dan Winship <danw gnome org>
Date:   Thu Mar 10 22:09:31 2011 -0500

    gsettings-tool: warn if setting a value fails
    
    eg, if the dconf backend cannot connect to dbus
    
    https://bugzilla.gnome.org/show_bug.cgi?id=641768

 gio/gsettings-tool.c |   14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/gio/gsettings-tool.c b/gio/gsettings-tool.c
index 14bd99f..a5d43a4 100644
--- a/gio/gsettings-tool.c
+++ b/gio/gsettings-tool.c
@@ -409,6 +409,7 @@ gsettings_set (GSettings   *settings,
   GError *error = NULL;
   GVariant *existing;
   GVariant *new;
+  GVariant *stored;
   gchar *freeme = NULL;
 
   existing = g_settings_get_value (settings, key);
@@ -442,16 +443,23 @@ gsettings_set (GSettings   *settings,
   if (!g_settings_range_check (settings, key, new))
     {
       g_printerr (_("The provided value is outside of the valid range\n"));
-      g_variant_unref (new);
       exit (1);
     }
 
   g_settings_set_value (settings, key, new);
+  g_settings_sync ();
+
+  stored = g_settings_get_value (settings, key);
+  if (g_variant_equal (stored, existing))
+    {
+      g_printerr (_("Failed to set value\n"));
+      exit (1);
+    }
+
+  g_variant_unref (stored);
   g_variant_unref (existing);
   g_variant_unref (new);
 
-  g_settings_sync ();
-
   g_free (freeme);
 }