#include <stdio.h>

typedef struct
{
#if 1
	union {
		struct {
			void *x;
			void *y;
		};
		struct {
			void *a;
			int b;
		};
	};
#else
	union {
		void *x;
		void *a;
	};
	union {
		void *y;
		int b;
	};
#endif
} test;

int main(int argc,char **argv)
{
	test v = {0};
	v.a = (void *) 5;
	int *m = (int *) &v;
	printf("%d %d\n",m[0],m[1]);
	printf("%d %d\n",(int) v.x,(int) v.y);
	return 0;
}