Issue #17587 has been reported by mweitzel (Matthew Weitzel).

----------------------------------------
Bug #17587: Segmentation fault with ractors and unix signals
https://bugs.ruby-lang.org/issues/17587

* Author: mweitzel (Matthew Weitzel)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin19] 
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
Segmentation fault when trapping signals and using a Ractor.


Can be reproduced by running the following
``` ruby
Ractor.new do
  Signal.trap('INT') do
    Ractor.yield("yoo hoO! big summer blowout")
  end
  `kill -2 #{$$}`
  `kill -2 #{$$}`
  `kill -2 #{$$}`
end.take
```

---Files--------------------------------
ruby_2021-01-27-135454_Matthews-MacBook-Air.crash (29.6 KB)


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