/**
 * Static utility methods pertaining to {@code byte} primitives, that are not already found in
 * either {@link Byte} or {@link Arrays}, <i>and interpret bytes as neither signed nor unsigned</i>.
 * The methods which specifically treat bytes as signed or unsigned are found in {@link SignedBytes}
 * and {@link UnsignedBytes}.
 *
 * <p>See the Guava User Guide article on <a

/**
 * Static utility methods pertaining to {@code byte} primitives, that are not already found in
 * either {@link Byte} or {@link Arrays}, <i>and interpret bytes as neither signed nor unsigned</i>.
 * The methods which specifically treat bytes as signed or unsigned are found in {@link SignedBytes}
 * and {@link UnsignedBytes}.
 *
 * <p>See the Guava User Guide article on <a

			}

			if sbytes != newtonLen {
				errc <- fmt.Errorf("sent %d bytes; expected %d", sbytes, newtonLen)
				return
			}
		}()
	}(ln)

	// Connect to listener to retrieve file and verify digest matches
	// expected.
	c, err := Dial("tcp", ln.Addr().String())
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

	h := sha256.New()
	rbytes, err := io.Copy(h, c)
	if err != nil {
		t.Error(err)

		addASN1IntBytes(b, r)
		addASN1IntBytes(b, s)
	})
	return b.Bytes()
}

// addASN1IntBytes encodes in ASN.1 a positive integer represented as
// a big-endian byte slice with zero or more leading zeroes.
func addASN1IntBytes(b *cryptobyte.Builder, bytes []byte) {
	for len(bytes) > 0 && bytes[0] == 0 {
		bytes = bytes[1:]
	}
	if len(bytes) == 0 {
		b.SetError(errors.New("invalid integer"))
		return
	}

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:], "]")

	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); }

	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_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); }