h.flags ^= hashWriting

	if h.buckets == nil {
		h.buckets = newobject(t.Bucket) // newarray(t.bucket, 1)
	}

again:
	bucket := hash & bucketMask(h.B)
	if h.growing() {
		growWork_fast64(t, h, bucket)
	}
	b := (*bmap)(add(h.buckets, bucket*uintptr(t.BucketSize)))

	var insertb *bmap
	var inserti uintptr
	var insertk unsafe.Pointer

bucketloop:
	for {