From 7c34e359a1d8e1affabeaa43377cf49f09933dfd Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 21 Dec 2003 08:29:06 +0000
Subject: * class.c (rb_check_inheritable): new function.  [ruby-dev:22316]

* intern.h: add prototype.

* eval.c (superclass): use rb_check_inheritable().

* object.c (rb_class_initialize): check argument validity.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5236 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 object.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'object.c')

diff --git a/object.c b/object.c
index 355d1e4f61..fda6410274 100644
--- a/object.c
+++ b/object.c
@@ -776,6 +776,9 @@ rb_class_initialize(argc, argv, klass)
     if (rb_scan_args(argc, argv, "01", &super) == 0) {
 	super = rb_cObject;
     }
+    else {
+	rb_check_inheritable(super);
+    }
     RCLASS(klass)->super = super;
     rb_make_metaclass(klass, RBASIC(super)->klass);
     rb_mod_initialize(klass);
-- 
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