#define __it(x, op) (x -= sizeof(u##op))
#define __it_diff(a, b, op) (*(u##op *)__it(a, op)) ^ (*(u##op *)__it(b, op))
case 32: diffs |= __it_diff(a, b, 64);
- /* fall through */
+ fallthrough;
case 24: diffs |= __it_diff(a, b, 64);
- /* fall through */
+ fallthrough;
case 16: diffs |= __it_diff(a, b, 64);
- /* fall through */
+ fallthrough;
case 8: diffs |= __it_diff(a, b, 64);
break;
case 28: diffs |= __it_diff(a, b, 64);
- /* fall through */
+ fallthrough;
case 20: diffs |= __it_diff(a, b, 64);
- /* fall through */
+ fallthrough;
case 12: diffs |= __it_diff(a, b, 64);
- /* fall through */
+ fallthrough;
case 4: diffs |= __it_diff(a, b, 32);
break;
}