Calculating maximum number based on value of enum

test.c

#include <stdio.h>
enum { MAX_NUM_OBJECTS = 29 };

typedef struct {
	union {
		uint32_t mask;

		struct {
			bool        available : 1;
			bool        client    : 1;
			bool        inproc    : 1;
			uint32_t    index     : MAX_NUM_OBJECTS;
		};
	};
} ObjectInfo;

int main() {
	printf("The maximum number of entries is a calculation involving MAX_NUM_OBJECTS (%x).\n", 0);
	return 0;
}