Who contributed to Rails on May 5, 2026?

2 developers shipped this update, including byroot and ariens.

What were the notable Rails updates?

Workaround Ruby [Bug #22023], Merge pull request #540 from byroot/use-proper-parser, and Fix encoding in Ruby [Bug #22023] workaround.

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The Wire · Showcase

BOOTSNAP PATCHES RUBY PARSER BUG; RAILS FIXES SPRING TEST WORKER SLOWDOWN

By RepoJournal · Filed 06:00 UTC on May 5, 2026 · About Rails

2 people shipped this

byroot @byroot 1 cited

ariens @ariens 1 cited

Bootsnap shipped v1.24.3 to work around a critical Ruby parser bug that breaks compilation, while Rails eliminated a performance regression in forked test processes that was triggering unnecessary filesystem scans.

Bootsnap hit a nasty snag with Ruby's `RubyVM::InstructionSequence.compile_file` — it's using the wrong parser entirely [1]. The workaround was to switch to `.compile_file_prism`, but that method itself has a bug that ignores compile options, so the team had to patch both [2]. To make matters worse, file encoding defaults to the system locale, which breaks parsing on minimal Ruby setups where `LANG` isn't set [3]. Version 1.24.3 fixes both issues and forces UTF-8 parsing [4]. On the Rails side, a subtle memory leak was hiding in the test infrastructure: when Spring workers forked and cleared reloaders, the `ViewReloader` hook persisted and kept triggering expensive `Dir.[]` and `File.mtime` scans on every `prepend_view_path` call [5]. The fix deactivates the hook properly on reloader cleanup [6], which should restore Spring test performance for anyone running into this.

Action items

→ Upgrade bootsnap to 1.24.3 immediately if you're on 1.24.2 or hit parse errors rails/bootsnap [immediate]
→ Pull the ViewReloader fix into your Rails version if you run Spring tests rails/rails [plan]
→ Monitor Spring test performance after both upgrades rails/rails [monitor]

References

[1] Workaround Ruby [Bug #22023] ↗ rails/bootsnap
[2] Merge pull request #540 from byroot/use-proper-parser rails/bootsnap
[3] Fix encoding in Ruby [Bug #22023] workaround rails/bootsnap
[4] v1.24.3 ↗ rails/bootsnap
[5] Deactivate ViewReloader hooks when reloaders are cleared ↗ rails/rails
[6] Merge pull request #57285 from ariens/deactivate-view-reloader-hooks rails/rails

Quick answers

What shipped in Rails on May 5, 2026?: Bootsnap shipped v1.24.3 to work around a critical Ruby parser bug that breaks compilation, while Rails eliminated a performance regression in forked test processes that was triggering unnecessary filesystem scans. In total, 7 commits, 2 pull requests, and 2 releases landed.
Who contributed to Rails on May 5, 2026?: 2 developers shipped this update, including byroot and ariens.
What were the notable Rails updates?: Workaround Ruby [Bug #22023], Merge pull request #540 from byroot/use-proper-parser, and Fix encoding in Ruby [Bug #22023] workaround.

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