From: Minero Aoki <aamine@...>
Date: 2002-05-06T12:17:27+09:00
Subject: [ruby-dev:17009] [PATCH] "unexpected return" for class C<1

あおきです。

以下のスクリプトを実行するとスーパークラスのところで
unexpected return になります。

  class C < 1
  end

パッチ添付。これでよければチェックインしときます。
-------------------------------------------------------------------
青木峰郎

Mon May  6 12:12:55 2002  Minero Aoki  <aamine@loveruby.net>

	* eval.c (superclass): undesirable "unexpected return" when the
	  superclass is not a Class.


Index: eval.c
===================================================================
RCS file: /home/aamine/cvs/ruby/ruby/eval.c,v
retrieving revision 1.289
diff -u -p -r1.289 eval.c
--- eval.c	1 May 2002 09:41:49 -0000	1.289
+++ eval.c	6 May 2002 03:07:29 -0000
@@ -1445,7 +1445,6 @@ superclass(self, node)
     }
     POP_TAG();
     if (state) {
-      superclass_error:
 	switch (nd_type(node)) {
 	  case NODE_COLON2:
 	    rb_raise(rb_eTypeError, "undefined superclass `%s'",
@@ -1458,7 +1457,10 @@ superclass(self, node)
 	}
 	JUMP_TAG(state);
     }
-    if (TYPE(val) != T_CLASS) goto superclass_error;
+    if (TYPE(val) != T_CLASS) {
+        rb_raise(rb_eTypeError, "superclass must be a Class but %s",
+                 rb_class2name(CLASS_OF(val)));
+    }
     if (FL_TEST(val, FL_SINGLETON)) {
 	rb_raise(rb_eTypeError, "can't make subclass of virtual class");
     }