re PR c++/33255 (A warning for "unused" typedefs?)

	PR c++/33255
	* decl.c (save_function_data): Clear local_typedefs.

From-SVN: r181100

gcc/cp/ChangeLog

 2011-11-07  Jason Merrill  <jason@redhat.com>
 
+	PR c++/33255
+	* decl.c (save_function_data): Clear local_typedefs.
+
 	* decl.c (cp_finish_decl): Only make_tree_vector if we're calling
 	check_initializer.
 

gcc/cp/decl.c

@@ -13021,6 +13021,7 @@ save_function_data (tree decl)
   f->base.x_stmt_tree.x_cur_stmt_list = NULL;
   f->bindings = NULL;
   f->x_local_names = NULL;
+  f->base.local_typedefs = NULL;
 }