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gh-159739: Clear free-threaded GC worklists after early errors - #159979
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JelleZijlstra merged 1 commit intoOct 21, 2026
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Backport to 3.15 and 3.14.
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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. |
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GH-160016 is a backport of this pull request to the 3.15 branch. |
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GH-160017 is a backport of this pull request to the 3.14 branch. |
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…GH-159979) (#160017) (cherry picked from commit 2315d94) Co-authored-by: Jelle Zijlstra <jelle@openai.com>
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…GH-159979) (#160016) (cherry picked from commit 2315d94) Co-authored-by: Jelle Zijlstra <jelle@openai.com>
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Clear free-threaded GC worklists after early errors. On a free-threaded build, an allocation failure while marking roots or identifying unreachable objects can abort a collection after its worklists have acquired strong references. The early return abandons those references and their GC bookkeeping, so the affected objects remain alive and memory is leaked.
Backport to 3.15 and 3.14.