ELEM_SIZE
uint8_t b[ELEM_SIZE] __attribute__((aligned(ELEM_SIZE)));
#if ELEM_SIZE == 8
switch (ELEM_SIZE) { \
uint8_t b[ELEM_SIZE];
uint8_t b[ELEM_SIZE] __attribute__((aligned(ELEM_SIZE)));
uint8_t b[ELEM_SIZE] __attribute__((aligned(ELEM_SIZE)));