[ruby-dev:49159] [Ruby trunk - Bug #11211] defined(foo.bar) calls respond_to_missing? everytime

Issue #11211 has been updated by Usaku NAKAMURA.

Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN to 2.0.0: WONTFIX, 2.1: REQUIRED, 2.2: REQUIRED

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Bug #11211: defined(foo.bar) calls respond_to_missing? everytime
https://bugs.ruby-lang.org/issues/11211#change-53192

* Author: Koichi Sasada
* Status: Closed
* Priority: Normal
* Assignee: Yukihiro Matsumoto
* ruby -v: 2.3dev
* Backport: 2.0.0: WONTFIX, 2.1: REQUIRED, 2.2: REQUIRED
----------------------------------------
```ruby
class C
  def respond_to_missing? *args
    p args
  end
  def existing_method; end
end

p defined?(C.new.existing_method)
```

This script prints 

```
[:existing_method, false]
"method"
```

even though exsiting_method is defiend.

It should be a bug.





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