* vm_method.c (rb_add_method_def): no redefinition warning on

  undef.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25206 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_module.rb b/test/ruby/test_module.rb
index c50cd38b79..59c965325f 100644
--- a/test/ruby/test_module.rb
+++ b/test/ruby/test_module.rb
@@ -845,5 +845,13 @@ class TestModule < Test::Unit::TestCase
       end
     end
     assert_equal("", stderr, '[ruby-dev:39397]')
+
+    stderr = EnvUtil.verbose_warning do
+      Module.new do
+        def foo; end
+        undef foo
+      end
+    end
+    assert_equal("", stderr)
   end
 end