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gh-159739: Collect grapheme iterator and segment type cycles - #159975
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JelleZijlstra merged 1 commit intoOct 21, 2026
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Backport to 3.15.
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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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Sorry, @jelle-openai and @JelleZijlstra, I could not cleanly backport this to 3.14 due to a conflict. Please backport manually with cherry_picker, see the devguide for more information. cherry_picker 990bcd9abdd1063dc90d8f182b6f85b1d8149bb8 3.14 |
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GH-160013 is a backport of this pull request to the 3.15 branch. |
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Collect grapheme iterator and segment type cycles. Grapheme iterators returned by unicodedata.iter_graphemes() and the segment objects they yield do not report their references to their heap types during GC traversal. If an instance participates in a cycle through its type and the unicodedata module, the collector cannot identify the cycle as unreachable, so the module and related objects can remain alive.
Backport to 3.15.