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David LiAntoine Pitrou
78e993bb8c8
David Li authored and Antoine Pitrou committed 5159d2b7442
ARROW-12622: [Python] Fix segfault in read_csv when not on main thread

An uninitialized StopToken caused segfaults if you ever called read_csv with cancellation disabled or when not on the main thread (e.g. if used in a Flight server). If we have a 4.0.1 I think this qualifies as a regression.

Closes #10227 from lidavidm/arrow-12622

Authored-by: David Li <li.davidm96@gmail.com>
Signed-off-by: Antoine Pitrou <antoine@python.org>