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Minjong Chung e66fe357b2 Fixed #21102 -- pickling a QuerySet with prefetches twice
Fixed the bug that a QuerySet that prefetches related objects cannot be
pickled and unpickled more than once (The second pickling attempt
raises an exception).

Added a new test for the queryset pickling idempotency.

The bug was introduced by
bac187c0d8e829fb3ca2ca82965eabbcbcb6ddd5.
2013-09-14 10:03:03 +03:00
2012-05-15 10:08:34 +02:00

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