#define OFFSET(TYPE, MEMBER ) &((TYPE *)0)->MEMBER #define OFFSET(TYPE, MEMB
阅读背景：
把“0”强制转化为结构体指针类型得到成员变量的偏移量
来源：互联网
#define OFFSET(TYPE, MEMBER ) &((TYPE *)0)->MEMBER #define OFFSET(TYPE, MEMB
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