Prevent SystemStackError when calling super in module with activated refinement

Without this, if a refinement defines a method that calls super and
includes a module with a module that calls super and has a activated
refinement at the point super is called, the module method super call
will end up calling back into the refinement method, creating a loop.

Fixes [Bug #17007]

1 files changed, 31 insertions, 0 deletions

diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
index 785113de77..e4a5cd25d2 100644
--- a/test/ruby/test_refinement.rb
+++ b/test/ruby/test_refinement.rb
@@ -484,6 +484,37 @@ class TestRefinement < Test::Unit::TestCase
     assert_equal("M#baz C#baz", RefineModule.call_baz)
   end
 
+  module RefineIncludeActivatedSuper
+    class C
+      def foo
+        ["C"]
+      end
+    end
+
+    module M; end
+
+    refinement = Module.new do
+      R = refine C do
+        def foo
+          ["R"] + super
+        end
+
+        include M
+      end
+    end
+
+    using refinement
+    M.define_method(:foo){["M"] + super()}
+
+    def self.foo
+      C.new.foo
+    end
+  end
+
+  def test_refine_include_activated_super
+    assert_equal(["R", "M", "C"], RefineIncludeActivatedSuper.foo)
+  end
+
   def test_refine_neither_class_nor_module
     assert_raise(TypeError) do
       Module.new {