Issue #18023 has been reported by slowpilot (Ivan Razuvaev).

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Bug #18023: Ractor#make_shareable changes the values of closured shareable objects
https://bugs.ruby-lang.org/issues/18023

* Author: slowpilot (Ivan Razuvaev)
* Status: Open
* Priority: Normal
* ruby -v: 3.0.0, 3.0.1
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
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Hi. I encountered strange behaviour or shareable procs when every even closured shareable variable becomes the FalseClass instance.

``` ruby
[usr@srvr ~]$ irb
3.0.1 :001 > v1, v2, v3, v4 = :a, :b, :c, :d
 => [:a, :b, :c, :d] 
3.0.1 :002 > p = Proc.new { p v1, v2, v3, v4 }
 => #<Proc:0x000000000248ed18 (irb):2> 
3.0.1 :003 > p.()
:a
:b
:c
:d
 => [:a, :b, :c, :d] 
3.0.1 :004 > Ractor.make_shareable(p).()
:a
false
:c
false
 => [:a, false, :c, false] 
```




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