if !ok {
		return "", "", s, ErrHeader
	}

	// Parse the first token as a decimal integer.
	n, perr := strconv.ParseInt(nStr, 10, 0) // Intentionally parse as native int
	if perr != nil || n < 5 || n > int64(len(s)) {
		return "", "", s, ErrHeader
	}
	n -= int64(len(nStr) + 1) // convert from index in s to index in rest
	if n <= 0 {
		return "", "", s, ErrHeader
	}

				}
				hdr.Xattrs[k[len(paxSchilyXattr):]] = v
			}
		}
		if err != nil {
			return ErrHeader
		}
	}
	hdr.PAXRecords = paxHdrs
	return nil
}

// parsePAX parses PAX headers.
// If an extended header (type 'x') is invalid, ErrHeader is returned.
func parsePAX(r io.Reader) (map[string]string, error) {
	buf, err := readSpecialFile(r)
	if err != nil {
		return nil, err

	// ErrDictionary is returned when reading ZLIB data that has an invalid dictionary.
	ErrDictionary = errors.New("zlib: invalid dictionary")
	// ErrHeader is returned when reading ZLIB data that has an invalid header.
	ErrHeader = errors.New("zlib: invalid header")
)

type reader struct {
	r            flate.Reader
	decompressor io.ReadCloser
	digest       hash.Hash32
	err          error

	flagComment = 1 << 4
)

var (
	// ErrChecksum is returned when reading GZIP data that has an invalid checksum.
	ErrChecksum = errors.New("gzip: invalid checksum")
	// ErrHeader is returned when reading GZIP data that has an invalid header.
	ErrHeader = errors.New("gzip: invalid header")
)

var le = binary.LittleEndian

// noEOF converts io.EOF to io.ErrUnexpectedEOF.
func noEOF(err error) error {
	if err == io.EOF {

		err:  ErrHeader,
	}, {
		file: "testdata/issue10968.tar",
		err:  ErrHeader,
	}, {
		file: "testdata/issue11169.tar",
		err:  ErrHeader,
	}, {
		file: "testdata/issue12435.tar",
		err:  ErrHeader,
	}, {
		// Ensure that we can read back the original Header as written with
		// a buggy pre-Go1.8 tar.Writer.
		file: "testdata/invalid-go17.tar",
		headers: []*Header{{

		},
		nil,
		nil,
	},
	{
		"bad header (CINFO)",
		"",
		[]byte{0x88, 0x98, 0x03, 0x00, 0x00, 0x00, 0x00, 0x01},
		nil,
		ErrHeader,
	},
	{
		"bad header (FCHECK)",
		"",
		[]byte{0x78, 0x9f, 0x03, 0x00, 0x00, 0x00, 0x00, 0x01},
		nil,
		ErrHeader,
	},
	{
		"bad checksum",
		"",
		[]byte{0x78, 0x9c, 0x03, 0x00, 0x00, 0x00, 0x00, 0xff},
		nil,
		ErrChecksum,
	},
	{

	}
	var r io.Reader

	switch compType {
	case noneType:
		r = scannedReader
	case gzipType:
		gzr, err := gzip.NewReader(scannedReader)
		if err != nil {
			if errors.Is(err, gzip.ErrHeader) || errors.Is(err, gzip.ErrChecksum) {
				return nil, errInvalidCompression(err, compType)
			}
			return nil, errTruncatedInput(err)
		}
		r = gzr
		pr.closer = gzr
	case bzip2Type:

			0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0xe1,
			0x02, 0x00, 0x2d, 0x3b, 0x08, 0xaf, 0x0c, 0x00,
			0x00, 0x00, 'g', 'a', 'r', 'b', 'a', 'g', 'e', '!', '!', '!',
		},
		ErrHeader,
	},
	{ // has 1 non-empty fixed huffman block not enough header
		"hello.txt",
		"hello.txt + garbage",
		"hello world\n",
		[]byte{
			0x1f, 0x8b, 0x08, 0x08, 0xc8, 0x58, 0x13, 0x4a,

			var stErr bzip2.StructuralError
			if errors.As(err, &stErr) {
				return errInvalidCompression(err, s3Select.Input.CompressionType)
			}
			// Test these compressor errors
			errs := []error{
				gzip.ErrHeader, gzip.ErrChecksum,
				s2.ErrCorrupt, s2.ErrUnsupported, s2.ErrCRC,
				zstd.ErrBlockTooSmall, zstd.ErrMagicMismatch, zstd.ErrWindowSizeExceeded, zstd.ErrUnknownDictionary, zstd.ErrWindowSizeTooSmall,

// architectures. If a large value is encountered when decoding, the result
// stored in Header will be the truncated version.

var tarinsecurepath = godebug.New("tarinsecurepath")

var (
	ErrHeader          = errors.New("archive/tar: invalid tar header")
	ErrWriteTooLong    = errors.New("archive/tar: write too long")
	ErrFieldTooLong    = errors.New("archive/tar: header field too long")