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Alias chaining does not properly restore old methods

Status: Open.

#9251 In jruby/jruby;

· headius opened on Feb 18, 2026

Array, Hash, and Struct use old RecursiveComparator

Status: Open.

#9274 In jruby/jruby;

· headius opened on Feb 28, 2026

Improve IR and JVM AOT support

Status: Draft (not ready).

jruby/jrubynumber 9380

#9380 In jruby/jruby;

· headius opened on Apr 19, 2026

Enumerator creation does not propagate keyword arguments

Status: Open.

#8750 In jruby/jruby;

· headius opened on Apr 5, 2025

Reduce overhead of invokedynamic binding

Status: Open.

#8756 In jruby/jruby;

· headius opened on Apr 8, 2025

Migrate one-shot classloading to hidden classes

Status: Open.

#8837 In jruby/jruby;

· headius opened on May 13, 2025

Handle eval from JIT frames specially for backtrace

Status: Open.

#8937 In jruby/jruby;

· headius opened on Aug 2, 2025

Regex caching prevents repeated warnings

Status: Open.

#8938 In jruby/jruby;

· headius opened on Aug 2, 2025

Core respond_to? checks should not trigger method_missing

core

needs tests

Status: Open.

#9048 In jruby/jruby;

· headius opened on Oct 29, 2025

Dynamic instance variables allocate too large of a table

Status: Open.

#9139 In jruby/jruby;

· headius opened on Dec 11, 2025

Waking a sleep triggers an expensive InterruptedException

Status: Open.

#9140 In jruby/jruby;

· headius opened on Dec 13, 2025

Implement fast float parsing and to_s

Status: Open.

#9162 In jruby/jruby;

· headius opened on Jan 7, 2026

Expand .freeze optimization to literal arrays and hashes

Status: Open.

#9165 In jruby/jruby;

· headius opened on Jan 8, 2026

Optimize literal array used only to call a method

Status: Open.

#9166 In jruby/jruby;

· headius opened on Jan 8, 2026

Optimize case === dispatch for core types

Status: Open.

#9167 In jruby/jruby;

· headius opened on Jan 8, 2026

Optimize math and bitwise operators for unknown types

jit

performance

Status: Open.

#9168 In jruby/jruby;

· headius opened on Jan 8, 2026

Optimize backref and lastline globals with pre/post call setup

jit

performance

Status: Open.

#9169 In jruby/jruby;

· headius opened on Jan 8, 2026

Consider optimizing more core methods to avoid dispatch

jit

performance

Status: Open.

#9170 In jruby/jruby;

· headius opened on Jan 8, 2026

Ruby 4.0.1 fixes

Status: Open.

#9179 In jruby/jruby;

· headius opened on Jan 14, 2026

InvokeBinder SmartBinder permutes use too many regex

Status: Open.

#9185 In jruby/jruby;

· headius opened on Jan 22, 2026

Simplify and unify block argument processing

Status: Open.

#9223 In jruby/jruby;

· headius opened on Feb 10, 2026

Indy call sites use CallType for structure and visibility

Status: Open.

#9229 In jruby/jruby;

· headius opened on Feb 10, 2026

AOT-compiled methods can't be refined later

Status: Open.

#9249 In jruby/jruby;

· headius opened on Feb 17, 2026

resolv gem broken under bundle on jruby-head on windows after recent ruby 4.0 change

Status: Open.

#9278 In jruby/jruby;

· ntkme opened on Mar 2, 2026

Find an alternative to shipping ruby-maven

Status: Open.

#9301 In jruby/jruby;

· headius opened on Mar 11, 2026