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gh-159739: Track group records for cyclic garbage collection by jelle-openai · Pull Request #159778 · python/cpython · GitHub

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gh-159739: Track group records for cyclic garbage collection - #159778

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JelleZijlstra merged 1 commit into
python:mainfrom
jelle-openai:jelle/codex/gh-159739-grp-record-gc
Oct 20, 2026
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gh-159739: Track group records for cyclic garbage collection#159778
JelleZijlstra merged 1 commit into
python:mainfrom
jelle-openai:jelle/codex/gh-159739-grp-record-gc

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jelle-openai commented Oct 19, 2026 •
edited by bedevere-app Bot
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I think this bug means you can leak memory if you mutate the list in the gr_mem field to point back to the group object itself.

bedevere-app Bot mentioned this pull request Oct 19, 2026
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JelleZijlstra added needs backport to 3.14 bugs and security fixes needs backport to 3.15 bugs and security fixes labels Oct 19, 2026
JelleZijlstra merged commit c2deb79 into python:main Oct 20, 2026
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miss-islington-app Bot commented Oct 20, 2026

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Thanks @jelle-openai for the PR, and @JelleZijlstra for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14, 3.15.
🐍🍒⛏🤖

bedevere-app Bot commented Oct 20, 2026

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GH-159904 is a backport of this pull request to the 3.15 branch.

bedevere-app Bot removed the needs backport to 3.15 bugs and security fixes label Oct 20, 2026

bedevere-app Bot commented Oct 20, 2026

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GH-159905 is a backport of this pull request to the 3.14 branch.

bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Oct 20, 2026
JelleZijlstra added a commit that referenced this pull request Oct 20, 2026
[3.15] gh-159739: Track group records for cyclic garbage collection (G…
f3352c2 
…H-159778) (#159904)

(cherry picked from commit c2deb79)

Co-authored-by: Jelle Zijlstra <jelle@openai.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
JelleZijlstra added a commit that referenced this pull request Oct 20, 2026
[3.14] gh-159739: Track group records for cyclic garbage collection (G…
46a54e5 
…H-159778) (#159905)

(cherry picked from commit c2deb79)

Co-authored-by: Jelle Zijlstra <jelle@openai.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
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