I do this in another way:

  for( size_t i_plus_one = count; i_plus_one > 0; --i_plus_one )
  {
      const size_t i= i_plus_one - 1;
      // actual loop code
  }

It's in my opinion better than using i-- as condition, since I generally avoid using results of -- and ++, because doing so is bug-prone.