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.
From a very young age, Eileen Collins wanted to be an astronaut
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（三）违法行为已涉嫌犯罪的，移送有关主管机关依法追究刑事责任；
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