From: Tomoyuki Chikanaga <redmine@...>
Date: 2010-12-03T19:53:11+09:00
Subject: [ruby-core:33545] [Ruby 1.9-Bug#4106] 1.9.2 regression - invoking protected singleton methods

Issue #4106 has been updated by Tomoyuki Chikanaga.


Hi

After r30064, invoking method still cause NoMethodError if an object has been 'extend'ed.

-- test code
module M
end
class A
  def meth
    :called
  end
  def test
    a = dup
    a.extend M
    class << a
      protected :meth
    end
    a.meth
  end
end

o = A.new
p o.test

-- patch
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 6ec6026..968bf10 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -630,7 +630,9 @@ vm_call_method(rb_thread_t *th, rb_control_frame_t *cfp,
                VALUE defined_class = me->klass;

                if (FL_TEST(defined_class, FL_SINGLETON)) {
-                   defined_class = RCLASS_SUPER(defined_class);
+                   do {
+                       defined_class = RCLASS_SUPER(defined_class);
+                   } while(RB_TYPE_P(defined_class, T_ICLASS));
                }
                else if (RB_TYPE_P(defined_class, T_ICLASS)) {
                    defined_class = RBASIC(defined_class)->klass;

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http://redmine.ruby-lang.org/issues/show/4106

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