[C++知识库]containof

containof 是Linux 驱动常用的宏，下面是一个例子。在vs2019上不能编译 ，gcc可以编译执行?

#include <stddef.h>
#include <stdio.h>

/*#define  offsetof(TYPE, MEM)   ((size_t) &((TYPE *)0)->MEM)
*/
#define  container_of(ptr, type, mem) ({ \
        const typeof(((type*)0)->mem) * __mptr = (ptr); \
        (type*)((char*)__mptr - offsetof(type, mem)); })
  
int main()
{
    struct Persion {
        int age;
        int score;
    };

    struct Persion wangyiPiv = { 11,100 };
    struct HschoolPersion {
        int privinceCode;
        int num;
        struct Persion* persion;
        char nation;
    };

    struct HschoolPersion wangyi = { 0,0,&wangyiPiv };
    struct HschoolPersion* wangyiAlis = container_of(&(wangyi.persion), struct HschoolPersion, persion);

    printf("wangyi = %x ,  wangyiAlis=%x", &wangyi, wangyiAlis);

}