var err error
	if r.fr != nil {
		err = r.fr.Close()
		flateReaderPool.Put(r.fr)
		r.fr = nil
	}
	return err
}

var (
	compressors   sync.Map // map[uint16]Compressor
	decompressors sync.Map // map[uint16]Decompressor
)

func init() {
	compressors.Store(Store, Compressor(func(w io.Writer) (io.WriteCloser, error) { return &nopCloser{w}, nil }))

	}
	b := readBuf(buf[:])
	if sig := b.uint32(); sig != directoryHeaderSignature {
		return ErrFormat
	}
	f.CreatorVersion = b.uint16()
	f.ReaderVersion = b.uint16()
	f.Flags = b.uint16()
	f.Method = b.uint16()
	f.ModifiedTime = b.uint16()
	f.ModifiedDate = b.uint16()
	f.CRC32 = b.uint32()
	f.CompressedSize = b.uint32()
	f.UncompressedSize = b.uint32()
	f.CompressedSize64 = uint64(f.CompressedSize)

	// automatically sets the ZIP format's UTF-8 flag for valid UTF-8 strings.
	NonUTF8 bool

	CreatorVersion uint16
	ReaderVersion  uint16
	Flags          uint16

	// Method is the compression method. If zero, Store is used.
	Method uint16

	// Modified is the modified time of the file.
	//
	// When reading, an extended timestamp is preferred over the legacy MS-DOS

pkg math/bits, func ReverseBytes16(uint16) uint16
pkg math/bits, func ReverseBytes32(uint32) uint32
pkg math/bits, func ReverseBytes64(uint64) uint64
pkg math/bits, func RotateLeft(uint, int) uint
pkg math/bits, func RotateLeft16(uint16, int) uint16
pkg math/bits, func RotateLeft32(uint32, int) uint32
pkg math/bits, func RotateLeft64(uint64, int) uint64
pkg math/bits, func RotateLeft8(uint8, int) uint8

	b = b[4:]                        // skip over disk number and first disk number (2x uint16)
	b.uint16(uint16(records))        // number of entries this disk
	b.uint16(uint16(records))        // number of entries total
	b.uint32(uint32(size))           // size of directory
	b.uint32(uint32(offset))         // start of directory
	b.uint16(uint16(len(w.comment))) // byte size of EOCD comment
	if _, err := w.cw.Write(buf[:]); err != nil {

		testReadFile(t, r.File[i], &wt)
	}
}

func TestWriterCreateRaw(t *testing.T) {
	files := []struct {
		name             string
		content          []byte
		method           uint16
		flags            uint16
		crc32            uint32
		uncompressedSize uint64
		compressedSize   uint64
	}{
		{
			name:    "small store w desc",
			content: []byte("gophers"),
			method:  Store,

	false = 0 != 0 // Untyped bool.
)

// uint8 is the set of all unsigned 8-bit integers.
// Range: 0 through 255.
type uint8 uint8

// uint16 is the set of all unsigned 16-bit integers.
// Range: 0 through 65535.
type uint16 uint16

// uint32 is the set of all unsigned 32-bit integers.
// Range: 0 through 4294967295.
type uint32 uint32

// uint64 is the set of all unsigned 64-bit integers.

pkg net/http, method (*Cookie) Valid() error
pkg net/netip, func AddrFrom16([16]uint8) Addr
pkg net/netip, func AddrFrom4([4]uint8) Addr
pkg net/netip, func AddrFromSlice([]uint8) (Addr, bool)
pkg net/netip, func AddrPortFrom(Addr, uint16) AddrPort
pkg net/netip, func IPv4Unspecified() Addr
pkg net/netip, func IPv6LinkLocalAllNodes() Addr
pkg net/netip, func IPv6Unspecified() Addr
pkg net/netip, func MustParseAddr(string) Addr

pkg crypto/tls, const TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 = 52393
pkg crypto/tls, const TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 uint16
pkg crypto/tls, const TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 = 52392
pkg crypto/tls, const TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 uint16
pkg crypto/tls, func CipherSuiteName(uint16) string
pkg crypto/tls, func CipherSuites() []*CipherSuite
pkg crypto/tls, func InsecureCipherSuites() []*CipherSuite

func ARM64RegisterShift(reg, op, count int16) (int64, error) {
	// the base register of shift operations must be general register.
	if reg > arm64.REG_R31 || reg < arm64.REG_R0 {
		return 0, errors.New("invalid register for shift operation")
	}
	return int64(reg&31)<<16 | int64(op)<<22 | int64(uint16(count)), nil
}