From: marcandre-ruby-core@...
Date: 2020-11-26T09:44:49+00:00
Subject: [ruby-core:101087] [Ruby master Bug#17343] Ractor can't clone	frozen structures

Issue #17343 has been reported by marcandre (Marc-Andre Lafortune).

----------------------------------------
Bug #17343: Ractor can't clone frozen structures
https://bugs.ruby-lang.org/issues/17343

* Author: marcandre (Marc-Andre Lafortune)
* Status: Open
* Priority: Normal
* Assignee: ko1 (Koichi Sasada)
* Target version: 3.0
* ruby -v: ruby 3.0.0dev (2020-11-26T00:37:38Z master af80df1820) [x86_64-darwin17]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
----------------------------------------
```ruby
Ractor.new([[]].freeze) {} # => FrozenError
```

See https://github.com/ruby/ruby/pull/3817



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