From: "rmosolgo (Robert Mosolgo) via ruby-core" <ruby-core@...>
Date: 2026-05-15T14:22:26+00:00
Subject: [ruby-core:125518] [Ruby Bug#22072] [BUG] should have cvar cache entry

Issue #22072 has been reported by rmosolgo (Robert Mosolgo).

----------------------------------------
Bug #22072: [BUG] should have cvar cache entry
https://bugs.ruby-lang.org/issues/22072

* Author: rmosolgo (Robert Mosolgo)
* Status: Open
* ruby -v: ruby 4.0.4 (2026-05-12 revision b89eb1bcbf) +PRISM [x86_64-linux]
* Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN
----------------------------------------

Hi! I have a CI build for my project that runs on Ruby 4.0.4, and it has recently started _sometimes_ segfaulting with this error: "". 

I have seen failures in two different spots: 

- In the middle of tests:
  ```
  /home/runner/work/graphql-ruby/graphql-ruby/vendor/bundle/ruby/4.0.0/gems/liquid-4.0.4/lib/liquid/strainer.rb:43: [BUG] should have cvar cache entry
  ruby 4.0.4 (2026-05-12 revision b89eb1bcbf) +PRISM [x86_64-linux]
  ```

   https://github.com/rmosolgo/graphql-ruby/actions/runs/25750012675/job/75623535379

- At the very beginning of the suite: 

  ```
  # Running tests with run options --seed 45415:

  /home/runner/work/graphql-ruby/graphql-ruby/spec/graphql/dataloader_spec.rb:1515: warning: Scheduler should implement #fiber_interrupt
  /home/runner/work/graphql-ruby/graphql-ruby/spec/graphql/schema/ractor_shareable_spec.rb:54: warning: Ractor API is experimental and may change in future versions of Ruby.
  /home/runner/work/graphql-ruby/graphql-ruby/vendor/bundle/ruby/4.0.0/gems/railties-8.1.3/lib/rails/generators.rb:27: [BUG] should have cvar cache entry
  ruby 4.0.4 (2026-05-12 revision b89eb1bcbf) +PRISM [x86_64-linux]
  ```

  https://github.com/rmosolgo/graphql-ruby/actions/runs/25922299759/job/76194216570

I have attached the full crash messages to this issue.

I don't have any guesses what to do next with these errors, but I thought I'd report them in case they're helpful. I'm happy to debug with my project if there's anything I can do to help. For now, I can get it to pass by re-running the build. Thanks!

Robert


---Files--------------------------------
dump1.txt (15.9 KB)
dump2.txt (78.3 KB)


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