# 3.3

12/25/2023



* Feature #18498: Introduce a public WeakKeysMap that compares by equality
* Feature #18949: Deprecate and remove replicate and dummy encodings
* Bug #18797: Third argument to Regexp.new is a bit broken
* Bug #19150: pack/unpack silently ignores unknown directives
* Bug #19436: Call Cache for singleton methods can lead to "memory leaks"
* Bug #19683: ruby-3.3.0-preview1 does not build with BSD make without --with-baseruby
* Feature #19714: Add Refinement#refined_module
* Feature #20053: M:N Threads, now w/ macOS support (kqueue)
* Bug #20062: Numbered parameters are broken in Ruby 3.3-dev
* Bug #20072: free(): invalid pointer when compiled with --enable-shared --with-jemalloc
* Bug #20029: coroutine/arm64/Context.S does not support PAC/BTI