1 files changed, 10 insertions, 0 deletions
diff --git a/object.c b/object.c
index 4dad9b7491..9ec96687e9 100644
--- a/object.c
+++ b/object.c
@@ -309,6 +309,9 @@ special_object_p(VALUE obj)
       case T_BIGNUM:
       case T_FLOAT:
       case T_SYMBOL:
+      case T_RATIONAL:
+      case T_COMPLEX:
+	/* not a comprehensive list */
 	return TRUE;
       default:
 	return FALSE;
@@ -349,6 +352,13 @@ rb_obj_clone2(int argc, VALUE *argv, VALUE obj)
     return immutable_obj_clone(obj, kwfreeze);
 }
 
+VALUE
+rb_immutable_obj_clone(int argc, VALUE *argv, VALUE obj)
+{
+    int kwfreeze = freeze_opt(argc, argv);
+    return immutable_obj_clone(obj, kwfreeze);
+}
+
 static int
 freeze_opt(int argc, VALUE *argv)
 {