if !evacuated(b) {
		// TODO: reuse overflow buckets instead of using new ones, if there
		// is no iterator using the old buckets.  (If !oldIterator.)

		// xy contains the x and y (low and high) evacuation destinations.
		var xy [2]evacDst
		x := &xy[0]
		x.b = (*bmap)(add(h.buckets, oldbucket*uintptr(t.BucketSize)))
		x.k = add(unsafe.Pointer(x.b), dataOffset)
		x.e = add(x.k, abi.MapBucketCount*8)

	if !evacuated(b) {
		// TODO: reuse overflow buckets instead of using new ones, if there
		// is no iterator using the old buckets.  (If !oldIterator.)

		// xy contains the x and y (low and high) evacuation destinations.
		var xy [2]evacDst
		x := &xy[0]
		x.b = (*bmap)(add(h.buckets, oldbucket*uintptr(t.BucketSize)))
		x.k = add(unsafe.Pointer(x.b), dataOffset)
		x.e = add(x.k, abi.MapBucketCount*2*goarch.PtrSize)

	if !evacuated(b) {
		// TODO: reuse overflow buckets instead of using new ones, if there
		// is no iterator using the old buckets.  (If !oldIterator.)

		// xy contains the x and y (low and high) evacuation destinations.
		var xy [2]evacDst
		x := &xy[0]
		x.b = (*bmap)(add(h.buckets, oldbucket*uintptr(t.BucketSize)))
		x.k = add(unsafe.Pointer(x.b), dataOffset)
		x.e = add(x.k, abi.MapBucketCount*4)

//   death tests; though it lacks many features you can find in PCRE
//   or POSIX extended regex syntax.  For example, we don't support
//   union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and
//   repetition count ("x{5,7}"), among others.
//
//   Below is the syntax that we do support.  We chose it to be a
//   subset of both PCRE and POSIX extended regex, so it's easy to

					Priority:                2,
					DeleteMarkerReplication: DeleteMarkerReplication{Status: Disabled},
					DeleteReplication:       DeleteReplication{Status: Enabled},
					Filter:                  Filter{Prefix: "xy", And: And{}, Tag: Tag{Key: "k1", Value: "v1"}},
				},
				{
					Status:                  Enabled,
					Priority:                1,
					DeleteMarkerReplication: DeleteMarkerReplication{Status: Enabled},

00000190  bd dc 44 fc 58 1d bc 9e  3a 0d 3b 61 13 d6 33 1b  |..D.X...:.;a..3.|
000001a0  97 a8 67 bf e6 d9 1d 34  69 70 93 4a 6c 28 88 01  |..g....4ip.Jl(..|
000001b0  01 9d 78 59 c0 58 66 c3  70 e4 ba 74 e6 0f f7 27  |..xY.Xf.p..t...'|
000001c0  8b dd 05 ac 0d 99 dc e9  c8 2f 16 ee 59 53 91 d7  |........./..YS..|
000001d0  28 27 db ad 85 e6 d0 72  28 81 31 e1 e7 bf dd 95  |('.....r(.1.....|

00000340  8b 2a ae eb 0e e5 f1 88  ff 3c de f8 ed d7 c3 07  |.*.......<......|
00000350  05 92 bb e5 6d 15 23 c8  54 19 a6 cf d1 4f e2 b1  |....m.#.T....O..|
00000360  a3 4d ff 6f 22 32 5b 58  f7 58 c1 9f 58 59 b5 e2  |.M.o"2[X.X..XY..|
00000370  7b 16 03 03 00 0c 0d 00  00 08 01 01 00 02 04 01  |{...............|
00000380  00 00 16 03 03 00 04 0e  00 00 00                 |...........|
>>> Flow 3 (client to server)

//
//	PublicSuffix("www.buggy.psl") == "xy"
//	PublicSuffix("www2.buggy.psl") == "com"
type testPSL struct{}

func (testPSL) String() string {
	return "testPSL"
}
func (testPSL) PublicSuffix(d string) string {
	if d == "co.uk" || strings.HasSuffix(d, ".co.uk") {
		return "co.uk"
	}
	if d == "www.buggy.psl" {
		return "xy"
	}
	if d == "www2.buggy.psl" {
		return "com"
	}

    }
  }

  *rhs_named_label_count = rhs_count;
  return labels;
}

// Generate new unnamed labels for the expression.
// For example, if we have GenerateLabels(2, {'b', 'c', 'd'}) for "...xy"
// We will have "dcxy" for the ellipsis expression since it's rank 4,
// we will have dcbxy if it's rank 5.
std::string GenerateLabels(int count,
                           const llvm::SetVector<char>& available_labels) {

000001f0  07 4f 65 81 c1 9e ea 36  7f 0d 8b 07 8b 71 81 5a  |.Oe....6.....q.Z|
00000200  0e cb d4 0f 98 c8 5c 69  d0 61 6e b5 ef 2a dd 5f  |......\i.an..*._|
00000210  63 92 b4 3e 6e f4 b8 fc  45 bf 58 79 08 a4 95 6f  |c..>n...E.Xy...o|
00000220  34 01 9b 8a 19 a5 e4 11  3f d4 97 47 66 e8 42 ef  |4.......?..Gf.B.|
00000230  92 72 01 f4 6f 07 a4 35  81 83 ee 26 d0 96 cc de  |.r..o..5...&....|