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gh-145678: Fix use-after-free in itertools.groupby _grouper_next() - #145679

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gh-145678: Fix use-after-free in itertools.groupby _grouper_next()#145679
sampsonc wants to merge 12 commits into
python:mainfrom
sampsonc:gh-145678-grouper-uaf

Commits on Mar 9, 2026
- gh-145678: Fix use-after-free in itertools.groupby _grouper_next()
  
  sampsonc
  and
  claude
  committed
  79bcea0
Commits on Mar 12, 2026
- gh-145678: Simplify test_grouper_next_reentrant_eq_does_not_crash
  
  sampsonc
  and
  claude
  committed
  29df8e8
- gh-145678: Remove unnecessary try/except in test
  
  sampsonc
  and
  claude
  committed
  867c8ee
- Update Modules/itertoolsmodule.c
  
  sampsonc
  and
  encukou
  authored
  cb4cc82
- Update Lib/test/test_itertools.py
  
  sampsonc
  and
  encukou
  authored
  fbf0a25
- Update Misc/NEWS.d/next/Library/2026-03-09-00-00-00.gh-issue-145678.grouper-uaf.rst
  
  sampsonc
  and
  encukou
  authored
  39dd69c
- Merge branch 'main' into gh-145678-grouper-uaf
  sampsonc
  authored
  1fa0e35
- gh-145678: Update NEWS entry wording per review
  
  sampsonc
  and
  claude
  committed
  1863876
- Merge branch 'main' into gh-145678-grouper-uaf
  sampsonc
  authored
  5daf7c4
Commits on Mar 14, 2026
- gh-145678: Strengthen test to assert refcount invariant
  
  sampsonc
  and
  claude
  committed
  750b54a
- gh-145678: Guard against re-entrant __eq__ never being called
  
  sampsonc
  and
  claude
  committed
  d9f4834
- gh-145678: Revert sys.getrefcount assertions from test
  
  sampsonc
  and
  claude
  committed
  fb85cf1