Issue #18232 has been updated by tenderlovemaking (Aaron Patterson).


It looks like the [outer variables list](https://github.com/ruby/ruby/blob/e4d85d3a2d0c7d4a1abf981fb1ba557e21cad968/vm.c#L1124) is being lost when we dump the iseq to binary.  AFAICT, that list is only created at compile time.  I'll try to make a patch that reconstructs the list on iseq load as well.

----------------------------------------
Bug #18232: Ractor.make_shareable is broken in code loaded with RubyVM::InstructionSequence.load_from_binary
https://bugs.ruby-lang.org/issues/18232#change-94035

* Author: byroot (Jean Boussier)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.0.2p107, ruby 3.1.0dev
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
This was first reported as a Bootsnap bug: https://github.com/Shopify/bootsnap/issues/376

But I reduced it to:

```ruby
source = <<~RUBY
  x = :foo
  pr = Proc.new { p x }
  Ractor.make_shareable(pr)
  pr.call
RUBY
RubyVM::InstructionSequence.compile(source).eval # :foo
RubyVM::InstructionSequence.load_from_binary(RubyVM::InstructionSequence.compile(source).to_binary).eval # false
```

The bug is present on both 3.0.2 and 3.1.0-dev. I have no idea what might cause this.



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