(long (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))

【(long(((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))】

(long  (((char *) (&(((p_type)NULL)->field))) - ((char *) NULL)))

文章插图
((long)(((char *)( amp;(((p _ type)NULL)- amp;gt;field)))-((char *)NULL)))((long)(((char *)( amp;(((p _ type)NULL)- amp;gt;Field)))-((char *) NULL))简介:# define xtoffset (p _ type,field)\((long)((char *)((((p _ type)NULL)- gt;field))) - ((char *) NULL