From: usa@...
Date: 2016-09-30T15:54:19+00:00
Subject: [ruby-dev:49828] [Ruby trunk Bug#12738] Array#flattenで特異クラスが引き継がれる

Issue #12738 has been updated by Usaku NAKAMURA.

Backport changed from 2.1: UNKNOWN, 2.2: REQUIRED, 2.3: DONE to 2.1: UNKNOWN, 2.2: DONE, 2.3: DONE

ruby_2_2 r56305 merged revision(s) 56111.

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Bug #12738: Array#flattenで特異クラスが引き継がれる
https://bugs.ruby-lang.org/issues/12738#change-60730

* Author: Kazuki Tsujimoto
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.4.0dev (2016-09-08 master 56109) [x86_64-linux]
* Backport: 2.1: UNKNOWN, 2.2: DONE, 2.3: DONE
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Array#flattenで生成されたオブジェクトがflattenのレシーバと特異クラスを共有してしまっています。

~~~ruby
a = []
class << a
  def m; :m; end
end
p a.flatten.m #=> :m
~~~




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