From: "fxn (Xavier Noria)" <noreply@...>
Date: 2022-06-21T05:50:26+00:00
Subject: [ruby-core:109030] [Ruby master Feature#18832] Do not have class/module keywords consider ancestors of Object

Issue #18832 has been updated by fxn (Xavier Noria).


Awesome, thanks Jeremy.

----------------------------------------
Feature #18832: Do not have class/module keywords consider ancestors of Object
https://bugs.ruby-lang.org/issues/18832#change-98146

* Author: fxn (Xavier Noria)
* Status: Open
* Priority: Normal
----------------------------------------
The following code:

```ruby
module M
  class C
  end
end

include M

p Object.const_defined?(:C, false)

class C < String # (1)
end
```

prints `false`, as expected, but then raises `superclass mismatch for class C (TypeError)` at (1).

I believe this is a bug, because `Object` itself does not have a `C` constant, so (1) should just work, and the superclasse of `M::C` should be irrelevant.



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