vm_method.c: fix change refined new method visibility

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49182 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Jan  8 16:31:43 2015  Seiei Higa  <hanachin@gmail.com>
+
+
+
 Thu Jan  8 12:53:44 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* dir.c (glob_helper): match in case-folding only if the directory

test/ruby/test_refinement.rb

@@ -1165,6 +1165,20 @@ class TestRefinement < Test::Unit::TestCase
     end;
   end
 
+  def test_change_refined_new_method_visibility
+    assert_separately([], <<-"end;")
+    bug10706 = '[ruby-core:67387] [Bug #10706]'
+    module RefinementBug
+      refine Object do
+        def foo
+        end
+      end
+    end
+
+    assert_raise(NameError, bug10706) {private(:foo)}
+    end;
+  end
+
   private
 
   def eval_using(mod, s)

vm_method.c

@@ -825,7 +825,9 @@ rb_export_method(VALUE klass, ID name, rb_method_flag_t noex)
 	me = search_method(rb_cObject, name, &defined_class);
     }
 
-    if (UNDEFINED_METHOD_ENTRY_P(me)) {
+    if (UNDEFINED_METHOD_ENTRY_P(me) ||
+	(me->def->type == VM_METHOD_TYPE_REFINED &&
+	 UNDEFINED_METHOD_ENTRY_P(me->def->body.orig_me))) {
 	rb_print_undef(klass, name, 0);
     }