// Check that []byte works, including named []byte types.
	{
		Value:     &Data{Bytes: []byte("ab"), Custom: MyBytes("cd"), Attr: []byte{'v'}},
		ExpectXML: `<Data Attr="v"><Bytes>ab</Bytes><Custom>cd</Custom></Data>`,
	},

	// Test innerxml
	{
		Value: &SecretAgent{
			Handle:    "007",
			Identity:  "James Bond",
			Obfuscate: "<redacted/>",
		},

// interface for IPv6 or IPv6 + zone. This is here for benchmarking.
type ip4i struct {
	ip4    [4]byte
	flags1 byte
	flags2 byte
	flags3 byte
	flags4 byte
	ipv6   any
}

func newip4i_v4(a, b, c, d byte) ip4i {
	return ip4i{ip4: [4]byte{a, b, c, d}}
}

// BenchmarkIPv4_inline benchmarks the candidate representation, ip4i.
func BenchmarkIPv4_inline(b *testing.B) {

	sec := t.sec()
	nsec := t.nsec()
	enc := []byte{
		version,         // byte 0 : version
		byte(sec >> 56), // bytes 1-8: seconds
		byte(sec >> 48),
		byte(sec >> 40),
		byte(sec >> 32),
		byte(sec >> 24),
		byte(sec >> 16),
		byte(sec >> 8),
		byte(sec),
		byte(nsec >> 24), // bytes 9-12: nanoseconds
		byte(nsec >> 16),
		byte(nsec >> 8),
		byte(nsec),

	cx := uint64(0) // byte-only

	// This stanza (until the blank line) is the "LMS-substring iterator",
	// described in placeLMS_8_64 above, with one line added to maintain cx.
	c0, c1, isTypeS := byte(0), byte(0), false
	for i := len(text) - 1; i >= 0; i-- {
		c0, c1 = text[i], c0
		cx = cx<<8 | uint64(c1+1) // byte-only
		if c0 < c1 {
			isTypeS = true

	TLSUnique []byte

	// ECHAccepted indicates if Encrypted Client Hello was offered by the client
	// and accepted by the server. Currently, ECH is supported only on the
	// client side.
	ECHAccepted bool

	// ekm is a closure exposed via ExportKeyingMaterial.
	ekm func(label string, context []byte, length int) ([]byte, error)

		buf.Write([]byte{0})
		buf.Write([]byte(".symtab\x00"))
		buf.Write([]byte(".strtab\x00"))
		buf.Write([]byte(".shstrtab\x00"))
		buf.Write([]byte(".text\x00"))
		buf.Write([]byte(".data\x00"))
		buf.Write([]byte(".bss\x00"))
		for i := 1; i <= 65288; i++ {
			// s_0001 ~ s_ff08
			name := fmt.Sprintf("section_%04x", i)
			buf.Write([]byte(name))
			buf.Write([]byte{0})
		}

		args = append(args, t)
		hash = fnv1(hash, byte(t.t.Hash>>24), byte(t.t.Hash>>16), byte(t.t.Hash>>8), byte(t.t.Hash))
	}
	if variadic {
		hash = fnv1(hash, 'v')
	}
	hash = fnv1(hash, '.')
	for _, out := range out {
		t := out.(*rtype)
		args = append(args, t)
		hash = fnv1(hash, byte(t.t.Hash>>24), byte(t.t.Hash>>16), byte(t.t.Hash>>8), byte(t.t.Hash))
	}

	ft.TFlag = 0
	ft.Hash = hash

	testCases := []IndexTest{
		{"", "q", -1},
		{"abcdef", "q", -1},
		{"abcdefabcdef", "a", len("abcdef")},      // something in the middle
		{"abcdefabcdef", "f", len("abcdefabcde")}, // last byte
		{"zabcdefabcdef", "z", 0},                 // first byte
		{"a☺b☻c☹d", "b", len("a☺")},               // non-ascii
	}
	for _, test := range testCases {
		actual := LastIndexByte(test.s, test.sep[0])
		if actual != test.out {

			t.Errorf("got forwarded User-Agent %q, want %q", got, want)
		}
	}
}

type bufferPool struct {
	get func() []byte
	put func([]byte)
}

func (bp bufferPool) Get() []byte  { return bp.get() }
func (bp bufferPool) Put(v []byte) { bp.put(v) }

func TestReverseProxyGetPutBuffer(t *testing.T) {
	const msg = "hi"

// Duplicates functionality in strconv, but avoids dependency.
func appendInt(b []byte, x int, width int) []byte {
	u := uint(x)
	if x < 0 {
		b = append(b, '-')
		u = uint(-x)
	}

	// 2-digit and 4-digit fields are the most common in time formats.
	utod := func(u uint) byte { return '0' + byte(u) }
	switch {
	case width == 2 && u < 1e2:
		return append(b, utod(u/1e1), utod(u%1e1))