In this case, b is a pointer that does not point to a valid address. You can't memset(b, 0, 100), or do any of the other regular pointer things with b. It feel

In this case, b is a pointer that does not point to a valid address. You can't memset(b, 0, 100), or do any of the other regular pointer things with b. It feels like you're introducing a million edge cases.