What's Changed

• Bug #21812: Kernel#sleep without arguments returns immediately when subprocess exits in another thread (regression in Ruby 4.0) - Ruby - Ruby Issue Tracking System
• Bug #21828: An incorrect warning message related to benchmark is shown when using benchmark-ips - Ruby - Ruby Issue Tracking System
• Bug #21811: Fix underflow in Array#pack - Ruby - Ruby Issue Tracking System
• Bug #21814: 0.pow(2,-9999999999999999990) should be zero - Ruby - Ruby Issue Tracking System
• Bug #21819: A Data object should be frozen even if it has no members - Ruby - Ruby Issue Tracking System

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

https://github.com/ruby/ruby/compare/v4.0.0...v4.0.1