From: "shugo (Shugo Maeda)" <redmine@...>
Date: 2013-10-17T17:49:57+09:00
Subject: [ruby-core:57909] [Backport 200 - Backport #9030][Open] Backport	r43334 (fix for SEGV with Refinements)


Issue #9030 has been reported by shugo (Shugo Maeda).

----------------------------------------
Backport #9030: Backport r43334 (fix for SEGV with Refinements)
https://bugs.ruby-lang.org/issues/9030

Author: shugo (Shugo Maeda)
Status: Open
Priority: Normal
Assignee: nagachika (Tomoyuki Chikanaga)
Category: 
Target version: 


=begin
Please backport r43334 to avoid SEGV when an undefined method is refined but the refinement is not used.
For example, the following program causes SEGV.

      class Foo
        def foo
        end

        undef foo
      end

      module FooExt
        refine Foo do
          def foo
          end
        end
      end

      begin
        Foo.new.foo # or Foo.new.send(:foo)
      end
=end


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