[3.15] gh-149590: Remove faulthandler_traverse (GH-150023)#150037
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`faulthandler_traverse` visits Python objects owned by `_PyRuntime`, not by the module instance. With multi-phase init allowing multiple module instances, each instance's GC traversal decrements `gc_refs` on the same runtime-owned objects, driving it negative when two instances are collected simultaneously. (cherry picked from commit 5673748) Co-authored-by: Armaan Vakharia <43391096+armaan-v924@users.noreply.github.com>
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This was referenced May 18, 2026
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faulthandler_traversevisits Python objects owned by_PyRuntime, notby the module instance. With multi-phase init allowing multiple module
instances, each instance's GC traversal decrements
gc_refson the sameruntime-owned objects, driving it negative when two instances are
collected simultaneously.
(cherry picked from commit 5673748)
Co-authored-by: Armaan Vakharia 43391096+armaan-v924@users.noreply.github.com