//sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
//sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
//sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
//sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)

		n := w.nbytes
		bytes := w.bytes[n : n+6]
		bytes[0] = byte(bits)
		bytes[1] = byte(bits >> 8)
		bytes[2] = byte(bits >> 16)
		bytes[3] = byte(bits >> 24)
		bytes[4] = byte(bits >> 32)
		bytes[5] = byte(bits >> 40)
		n += 6
		if n >= bufferFlushSize {
			w.write(w.bytes[:n])
			n = 0
		}
		w.nbytes = n
	}
}

// Write the header of a dynamic Huffman block to the output stream.
//

	// Read a count.
	nbytes, _, err := decodeUintReader(dec.r, dec.countBuf)
	if err != nil {
		dec.err = err
		return false
	}
	if nbytes >= tooBig {
		dec.err = errBadCount
		return false
	}
	dec.readMessage(int(nbytes))
	return dec.err == nil
}

// readMessage reads the next nbytes bytes from the input.
func (dec *Decoder) readMessage(nbytes int) {
	if dec.buf.Len() != 0 {

func (s *formatState) parseIndex() bool {
	if s.nbytes == len(s.format) || s.format[s.nbytes] != '[' {
		return true
	}
	// Argument index present.
	s.nbytes++ // skip '['
	start := s.nbytes
	s.scanNum()
	ok := true
	if s.nbytes == len(s.format) || s.nbytes == start || s.format[s.nbytes] != ']' {
		ok = false // syntax error is either missing "]" or invalid index.
		s.nbytes = strings.Index(s.format[start:], "]")

	pr, _ := io.Pipe()
	tests := []struct {
		r    io.Reader
		want bool
	}{
		{pr, false},

		{bytes.NewReader(nil), true},
		{bytes.NewBuffer(nil), true},
		{strings.NewReader(""), true},

		{io.NopCloser(pr), false},

		{io.NopCloser(bytes.NewReader(nil)), true},
		{io.NopCloser(bytes.NewBuffer(nil)), true},
		{io.NopCloser(strings.NewReader("")), true},
	}
	for i, tt := range tests {

	SYS_EXTATTR_LIST_FILE        = 438 // { ssize_t extattr_list_file(const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link(const char *path, int attrnamespace, void *data, size_t nbytes); }

	SYS_EXTATTR_LIST_FILE        = 438 // { ssize_t extattr_list_file(const char *path, int attrnamespace, void *data, size_t nbytes); }
	SYS_EXTATTR_LIST_LINK        = 439 // { ssize_t extattr_list_link(const char *path, int attrnamespace, void *data, size_t nbytes); }

    Murmur3_32Hasher(int seed) {
      this.h1 = seed;
      this.length = 0;
      isDone = false;
    }

    private void update(int nBytes, long update) {
      // 1 <= nBytes <= 4
      buffer |= (update & 0xFFFFFFFFL) << shift;
      shift += nBytes * 8;
      length += nBytes;

      if (shift >= 32) {
        h1 = mixH1(h1, mixK1((int) buffer));
        buffer >>>= 32;
        shift -= 32;
      }
    }

	SYS_EXTATTR_GET_LINK     = 368 // { ssize_t|sys||extattr_get_link(const char *path, int attrnamespace, const char *attrname, void *data, size_t nbytes); }
	SYS_EXTATTR_DELETE_LINK  = 369 // { int|sys||extattr_delete_link(const char *path, int attrnamespace, const char *attrname); }
	SYS_EXTATTR_LIST_FD      = 370 // { ssize_t|sys||extattr_list_fd(int fd, int attrnamespace, void *data, size_t nbytes); }

	SYS_EXTATTR_GET_LINK     = 368 // { ssize_t|sys||extattr_get_link(const char *path, int attrnamespace, const char *attrname, void *data, size_t nbytes); }
	SYS_EXTATTR_DELETE_LINK  = 369 // { int|sys||extattr_delete_link(const char *path, int attrnamespace, const char *attrname); }
	SYS_EXTATTR_LIST_FD      = 370 // { ssize_t|sys||extattr_list_fd(int fd, int attrnamespace, void *data, size_t nbytes); }