无数的意外行为可能会导致这种情况出现。
Numerous undesirable behaviors could come out of a setup like this one.
不检测和清除异常会导致出现意外行为。
Not checking and clearing exceptions can lead to unexpected behavior.
通过将栈深度限制为三层，您应该能避免意外行为。
By restricting the stack depth to three levels, you should avoid unexpected behaviour.
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