Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
The long-running series in which readers answer other readers’ questions asks whether we could cope with a world where computer gave up saying no …，更多细节参见体育直播
fuzzing run using Csmith (again, around 200,000 tests) could not get my，这一点在体育直播中也有详细论述
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