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04:05 AM Ruby Bug #21266 (Closed): YJIT GC safety crash with proc objects as block argument

Applied in changeset commit:git|9168cad4d63a5d281d443bde4edea6be213b0b25.
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YJIT: Bail out if proc would be stored above stack top
Fixes [Bug #21266]. rwstauner (Randy Stauner)

04:05 AM Ruby Revision 9168cad4 (git): YJIT: Bail out if proc would be stored above stack top

Fixes [Bug #21266]. rwstauner (Randy Stauner)

12/13/2025

01:00 AM Ruby Revision eb7acd75 (git): ZJIT: Nil-fill locals in direct send (#15536)

Avoid garbage reads from locals in eval.
Before the fix the test fails with
<"[\"x\", \"x\", \"x\", \"x\"]"> expected but was
<"[\"x\", \"x\", \"x\", \"x286326928\"]">. rwstauner (Randy Stauner)

12/12/2025

11:55 PM Ruby Revision 8f81d2b5 (git): ZJIT: Don't inline non-parameter locals

rwstauner (Randy Stauner)

01:28 AM Ruby Revision 3a766259 (git): ZJIT: Don't specialize calls with kwsplat (#15513)

rwstauner (Randy Stauner)

12/09/2025

08:29 PM Ruby Revision bd0d08b6 (git): ZJIT: Show send fallback reason in HIR dump (#15454)

This adds comments to the hir dump output like this:
v13:BasicObject = SendWithoutBlock v6, :test, v11 # SendFallbackReason: Complex argument passing rwstauner (Randy Stauner)

03:19 PM Ruby Revision 76d845aa (git): ZJIT: Test additional arg passing scenarios

rwstauner (Randy Stauner)

03:19 PM Ruby Revision c42f4d80 (git): ZJIT: Handle caller_kwarg in direct send when all keyword params are required

rwstauner (Randy Stauner)

03:19 PM Ruby Revision f0b288ad (git): ZJIT: Put keyword bits in callee frame rather than c_args

rwstauner (Randy Stauner)

12/01/2025

05:45 PM Ruby Revision 28b2e2ed (git): YJIT: Abort expandarray optimization if method_missing is defined

Fixes: [Bug #21707]
[AW: rewrote comments]
Co-authored-by: Alan Wu <alanwu@ruby-lang.org> rwstauner (Randy Stauner)