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[3.13] gh-117657: Fix TSAN races in setobject.c (GH-121511) - #121541
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The `used` field must be written using atomic stores because `set_len` and iterators may access the field concurrently without holding the per-object lock. (cherry picked from commit 9c08f40) Co-authored-by: Sam Gross <colesbury@gmail.com>
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The
usedfield must be written using atomic stores becauseset_lenand iterators may access the field concurrently without holding the
per-object lock.
(cherry picked from commit 9c08f40)
Co-authored-by: Sam Gross colesbury@gmail.com