[3.14] gh-146613: Fix re-entrant use-after-free in itertools._grouper (GH-147962)#148010
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hugovk merged 1 commit intopython:3.14from Apr 6, 2026
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pythonGH-147962) (cherry picked from commit fc7a188fe70a7b98696b4fcee8db9eb8398aeb7b) Co-authored-by: Ma Yukun <68433685+TheSkyC@users.noreply.github.com>
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(cherry picked from commit fc7a188)
Co-authored-by: Ma Yukun 68433685+TheSkyC@users.noreply.github.com
itertools._grouper.__next__has the same re-entrant use-after-free that was fixed ingroupby.__next__#146613