如果有下面这段代码：
#define min(x, y) ({ \
const typeof(x) _x = (x); \
const typeof(y) _y = (y); \
(void) (&_x == &_y); \
_x < _y ? _x : _y; })
int x = 2;
char y = 3;
int m;
m = min(x, y);#define min(x, y) ({ \
