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01a3c6b204bfbe149dc2cc2278dd58f206af7ae2
Even if pointer assignment may be atomic, it does not prevent reordering and other nifty compiler tricks, we need a memory barrier to ensure not only that transferring pointer from wip array to final one is atomic, but also that all previous writing to memory are “flushed” to (visible by) all CPUs... Thanks @sergey for finding the potential (though quite unlikely) issue.
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