if *s.gcmarkBits.bytep(i)&^*s.allocBits.bytep(i) != 0 {
				s.reportZombies()
			}
		}
	}

	// Count the number of free objects in this span.
	nalloc := uint16(s.countAlloc())
	nfreed := s.allocCount - nalloc
	if nalloc > s.allocCount {
		// The zombie check above should have caught this in
		// more detail.

	})
}

func MSpanCountAlloc(ms *MSpan, bits []byte) int {
	s := (*mspan)(ms)
	s.nelems = uint16(len(bits) * 8)
	s.gcmarkBits = (*gcBits)(unsafe.Pointer(&bits[0]))
	result := s.countAlloc()
	s.gcmarkBits = nil
	return result
}

const (
	TimeHistSubBucketBits = timeHistSubBucketBits
	TimeHistNumSubBuckets = timeHistNumSubBuckets
	TimeHistNumBuckets    = timeHistNumBuckets