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irb seems to be having output buffering issues on Windows.

Status: Open.

#9126 In jruby/jruby;

· YO4 opened on Dec 9, 2025

<code>File.path</code> doesn't raise <code>Encoding::CompatibilityError</code> for ASCII-incompatible string

Status: Open.

#9120 In jruby/jruby;

· nobu opened on Dec 7, 2025

Implement fast-path builtin method flags

Status: Open.

#9119 In jruby/jruby;

· headius opened on Dec 6, 2025

JRuby 10 installing Bundler 4.0.0 by default, breaking existing build process

Status: Open.

#9118 In jruby/jruby;

· hoprocker opened on Dec 6, 2025

Array#include? and Array#index 3x slower in JRuby 10 vs JRuby 1.7

Status: Open.

#9116 In jruby/jruby;

· tbsvttr opened on Dec 5, 2025

String-based eval 7-13x slower in JRuby 10 vs JRuby 1.7

Status: Open.

#9115 In jruby/jruby;

· tbsvttr opened on Dec 5, 2025

Hash#keys performance regression: 22x slower than MRI, 1.6x slower than JRuby 1.7

Status: Open.

#9114 In jruby/jruby;

· tbsvttr opened on Dec 5, 2025

Performance regression in RubyHash for large hashes (~8-10x slower than JRuby 1.7)

Status: Open.

#9113 In jruby/jruby;

· tbsvttr opened on Dec 4, 2025

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JRuby 10.0.3.0

Optimization: Array operand caches and dups for immutable contents

Status: Open.

#9111 In jruby/jruby;

· headius opened on Dec 3, 2025

Always-on character conversion in Windows IO requires large char buffer

Status: Open.

#9100 In jruby/jruby;

· headius opened on Dec 1, 2025

Examine loaded features index memory use

Status: Open.

#9099 In jruby/jruby;

· headius opened on Dec 1, 2025

ThreadLocal Memory Leak in JRuby 10.0.2.0 with ScriptingContainer

Status: Open.

#9092 In jruby/jruby;

· frytAA opened on Nov 21, 2025