1 files changed, 18 insertions, 0 deletions
diff --git a/test/ruby/test_module.rb b/test/ruby/test_module.rb
index 15a39346dd..4ca0e09277 100644
--- a/test/ruby/test_module.rb
+++ b/test/ruby/test_module.rb
@@ -2352,6 +2352,24 @@ class TestModule < Test::Unit::TestCase
     end;
   end
 
+  def test_private_extended_module
+    assert_separately [], %q{
+      class Object
+        def bar; "Object#bar"; end
+      end
+      module M1
+        def bar; super; end
+      end
+      module M2
+        include M1
+        private(:bar)
+        def foo; bar; end
+      end
+      extend M2
+      assert_equal 'Object#bar', foo
+    }
+  end
+
   private
 
   def assert_top_method_is_private(method)