0xPIT

void hexdump(const void* data, size_t size) {
  size_t j;
  size_t i;
  #define nexti (i + 1)

  const uint8_t wrap = 16;
  char ascii[wrap + 1];
  memset(ascii, 0, sizeof(ascii));

  for (i = 0; i < size; ++i) {