merge revision(s) 636d4f7eb9f3fcb088e1a44af4181c4aa36789b4: [Backport #17822]

	Avoid setting the visibility of refinement method entries

	Since refinement search is always performed, these entries should always
	be public. The method entry that the refinement search returns decides
	the visibility.

	Fixes [Bug #17822]
	---
	 test/ruby/test_refinement.rb | 22 ++++++++++++++++++++++
	 vm_method.c                  | 15 ++++++++++-----
	 2 files changed, 32 insertions(+), 5 deletions(-)

1 files changed, 22 insertions, 0 deletions

diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index b386c3a8d7..ed31faec42 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -2537,6 +2537,28 @@ class TestRefinement < Test::Unit::TestCase
     assert_equal(:second, klass.new.foo)
   end
 
+  class Bug17822
+    module Ext
+      refine(Bug17822) do
+        def foo = :refined
+      end
+    end
+
+    private(def foo = :not_refined)
+
+    module Client
+      using Ext
+      def self.call_foo
+        Bug17822.new.foo
+      end
+    end
+  end
+
+  # [Bug #17822]
+  def test_privatizing_refined_method
+    assert_equal(:refined, Bug17822::Client.call_foo)
+  end
+
   private
 
   def eval_using(mod, s)