From: shugo@...
Date: 2016-11-05T03:01:17+00:00
Subject: [ruby-core:77952] [Ruby trunk Bug#11186] Can't refine aliases in	subclasses

Issue #11186 has been updated by Shugo Maeda.

Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONTNEED

The bug was fixed in Ruby 2.3, and need not to be backported to prior versions, I think.

----------------------------------------
Bug #11186: Can't refine aliases in subclasses
https://bugs.ruby-lang.org/issues/11186#change-61277

* Author: Shugo Maeda
* Status: Closed
* Priority: Normal
* Assignee: Shugo Maeda
* ruby -v: ruby 2.3.0dev (2015-05-27 trunk 50647) [x86_64-linux]
* Backport: 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONTNEED
----------------------------------------
In the following program, D.new.bar returns :original, but should return :refined.

```
class C
  def foo
    :original
  end
end

class D < C
  alias bar foo
end

module M
  refine D do
    def bar
      :refined
    end
  end
end

using M
p D.new.bar
```

This bug seemed to be introduced in r45367.




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