From: "nagachika (Tomoyuki Chikanaga) via ruby-core" <ruby-core@...>
Date: 2024-01-18T03:20:01+00:00
Subject: [ruby-core:116284] [Ruby master Bug#20042] ObjectSpace finalizer can cause segfault

Issue #20042 has been updated by nagachika (Tomoyuki Chikanaga).

Backport changed from 3.0: REQUIRED, 3.1: REQUIRED, 3.2: REQUIRED to 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE

ruby_3_2 0cc0e43745ffc13a596441adccee295274d99a0b merged revision(s) f9a48548cf3ef54fc0a385ccd78c708737055ecc.

----------------------------------------
Bug #20042: ObjectSpace finalizer can cause segfault
https://bugs.ruby-lang.org/issues/20042#change-106306

* Author: ioquatix (Samuel Williams)
* Status: Closed
* Priority: Normal
* Assignee: ko1 (Koichi Sasada)
* Backport: 3.0: REQUIRED, 3.1: REQUIRED, 3.2: DONE
----------------------------------------
```ruby
class Finalizer
  def call # <- missing (id) argument
  end
end

object = Object.new
ObjectSpace.define_finalizer(object, Finalizer.new)
object = nil

GC.start # segfaults here
```



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