//    If such object is not marked, we need to queue all finalizers at once.
	// Both 1 and 2 are possible at the same time.
	hadSpecials := s.specials != nil
	siter := newSpecialsIter(s)
	for siter.valid() {
		// A finalizer can be set for an inner byte of an object, find object beginning.
		objIndex := uintptr(siter.s.offset) / size
		p := s.base() + objIndex*size

	special special
	counter uintptr
}

// specialsIter helps iterate over specials lists.
type specialsIter struct {
	pprev **special
	s     *special
}

func newSpecialsIter(span *mspan) specialsIter {
	return specialsIter{&span.specials, span.specials}
}

func (i *specialsIter) valid() bool {
	return i.s != nil
}

func (i *specialsIter) next() {