struct simple {
	int first;
	long int second;
};

struct simple_union {
	int zeroth;
	union {
		int first;
		long int second;
	};
	int third;
};

struct simple_bitfield {
	char first:1;
	char second:2;
};

struct array_in_union {
	union {
		char first[12];
		int second;
	};
};

/* need to use the structs to have them embedded */
void use_structs(void) {
	struct simple simple __attribute__((unused));
	struct simple_union simple_union __attribute__((unused));
	struct simple_bitfield simple_bitfield __attribute__((unused));
	struct array_in_union array_in_union __attribute__((unused));

	return;
}