[3.13] gh-143543: Fix re-entrant use-after-free in itertools.groupby (GH-143738) (GH-144627)
(cherry picked from commit a91b5c3fb5aeaeda6a8e016378beb0e4a8b329e6) Co-authored-by: VanshAgarwal24036 <148854295+VanshAgarwal24036@users.noreply.github.com> Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com> Co-authored-by: Petr Viktorin <encukou@gmail.com>
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on 2/10/2026, 1:01:23 PM