The semantics around releasing locks with pending reads were also unclear for years. If you called read() but didn't await it, then called releaseLock(), what happened? The spec was recently clarified to cancel pending reads on lock release – but implementations varied, and code that relied on the previous unspecified behavior can break.
Jonathan Head,South East Asia correspondentand
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* @param arr 待排序数组
Permanently destroy a container and all its checkpoints