styleproperties: Add a warning

GtkStyleProperties stores computed values. Make sure it does.

diff --git a/gtk/gtkstyleproperties.c b/gtk/gtkstyleproperties.c
index a92d72219e99c8cbcec781a48311e88d4926e596..4643a93a2c931a56c1f6cee31ee240abda09eb82 100644 (file)
--- a/gtk/gtkstyleproperties.c
+++ b/gtk/gtkstyleproperties.c
@@ -439,6 +439,8 @@ _gtk_style_properties_set_property_by_property (GtkStyleProperties  *props,
   PropertyData *prop;
   GValue *val;
 
+  g_return_if_fail (G_VALUE_TYPE (value) == _gtk_css_style_property_get_computed_type (style_prop));
+
   priv = props->priv;
   prop = g_hash_table_lookup (priv->properties, style_prop);