[ruby-core:57511] [Backport 200 - Backport #8966] SEGV when a refined method is undefined by undef

Issue #8966 has been updated by shugo (Shugo Maeda).


nagachika (Tomoyuki Chikanaga) wrote:
> committed at r43090. 
> And it should be backported to ruby_2_0_0.

Ah, I forgot to add the bug number to the commit log of r43090.  Thanks.
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Backport #8966: SEGV when a refined method is undefined by undef
https://bugs.ruby-lang.org/issues/8966#change-42126

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


=begin
The following code causes SEGV:

  module Foo
    refine Object do
      def foo
        puts "foo"
      end
    end
  end
  
  using Foo
  
  class Object
    undef foo
  end
  
  foo

I guess undef is not aware of refinements.
=end


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