Bit 1 is also the NotYetScanned bit that is only used during mark stack overflow.

第1位还是仅在标志堆栈溢出期间使用的NotYetScan ne d位。

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As you can see, 64-bit registers are used and there is no overflow.

正如你可以看到，64位寄存器的使用和没有溢出。

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An out-of-range signal indicates an overflow condition, which can be used with the most significant bit to determine low or high overflow.

超量程信号表示溢出状况，可由最高有效位来确定是下溢还是上溢。

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