* vm_method.c (rb_add_method_def): nothing to do if old method had

  same definition.  [ruby-dev:39397]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25147 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_class.rb b/test/ruby/test_class.rb
index 8d618822a5..382dbb9cc3 100644
--- a/test/ruby/test_class.rb
+++ b/test/ruby/test_class.rb
@@ -130,6 +130,14 @@ class TestClass < Test::Unit::TestCase
       end
     end
     assert_equal("", stderr)
+    stderr = verbose_warning do
+      Module.new do
+        module_function
+        def foo; end
+        module_function :foo
+      end
+    end
+    assert_equal("", stderr, '[ruby-dev:39397]')
   end
 
   def test_check_inheritable