Index: c-common.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/c-common.c,v
retrieving revision 1.588
diff -u -p -r1.588 c-common.c
--- c-common.c	25 Nov 2004 17:11:17 -0000	1.588
+++ c-common.c	26 Nov 2004 00:45:41 -0000
@@ -4571,6 +4571,12 @@ handle_visibility_attribute (tree *node,
       decl = TYPE_NAME (decl);
       if (!decl)
         return NULL_TREE;
+      if (TREE_CODE (decl) == IDENTIFIER_NODE)
+	{
+	   warning ("%qs attribute ignored on types",
+		    IDENTIFIER_POINTER (name));
+	   return NULL_TREE;
+	}
     }
 
   if (strcmp (TREE_STRING_POINTER (id), "default") == 0)