From: "k0kubun (Takashi Kokubun) via ruby-core" <ruby-core@...>
Date: 2025-12-08T22:28:33+00:00
Subject: [ruby-core:124062] [Ruby Bug#21694] Crash when looking up super method from BasicObject

Issue #21694 has been updated by k0kubun (Takashi Kokubun).


Backporting this causes multiple conflicts. Could you file a backport PR to `ruby_3_4` please?

----------------------------------------
Bug #21694: Crash when looking up super method from BasicObject
https://bugs.ruby-lang.org/issues/21694#change-115497

* Author: byroot (Jean Boussier)
* Status: Closed
* Backport: 3.2: DONTNEED, 3.3: DONTNEED, 3.4: REQUIRED
----------------------------------------
Initially reported on Reddit by easydwh https://old.reddit.com/r/ruby/comments/1ozhupr/is_a_ruby_segmentation_fault_a_bug_if_you_are/

Repro:

```ruby
class BasicObject
  def basic_call_no_super
    super
  end
end

"test".basic_call_no_super
```

Pull Request: https://github.com/ruby/ruby/pull/15221



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