warning: left shift count >= width of type
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Linux 64位机器上编译 1<<62，编译提示：warning: left shift count >= width of type
在64位机器上1分配Int类型（4字节）。
错误修改：
1UL << 62 指定1为8字节整数，因此可以解决该问题。
在64位机器上以下类型字的长度
类型长度（字节）int4unsigned int4long8unsigned long8long unsigned int8double8 0 0
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