From: "nobu (Nobuyoshi Nakada) via ruby-core" <ruby-core@...>
Date: 2023-01-24T01:37:44+00:00
Subject: [ruby-core:111996] [Ruby master Bug#19372] Proc objects are not traversed for shareable check during Ractor.make_shareable(prok)

Issue #19372 has been updated by nobu (Nobuyoshi Nakada).


Maybe https://github.com/nobu/ruby/tree/ractor-unshareable-data fixes it?

----------------------------------------
Bug #19372: Proc objects are not traversed for shareable check during Ractor.make_shareable(prok)
https://bugs.ruby-lang.org/issues/19372#change-101430

* Author: luke-gru (Luke Gruber)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
```ruby
class Proc
  attr_accessor :obj1
  def initialize
    @obj1 = Object.new
  end
end

p = true.instance_eval { Proc.new { puts "hi" } }
Ractor.make_shareable(p)
p "Obj1 frozen?", Ractor.shareable?(p.obj1)
P = p

r = Ractor.new do
  pp = P
  p pp.obj1 # gives error in debug builds (rb_ractor_confirm_belonging rb_bug() call)
end
```



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