funlockfile (stream);
LINE_PARSER(, STRING_FIELD (result->gr_name, ISCOLON, 0); if (line[0] == '\0'     && (result->gr_name[0] == '+' || result->gr_name[0] == '-'))   {     result->gr_passwd = NULL;     result->gr_gid = 0;   } else   {     STRING_FIELD (result->gr_passwd, ISCOLON, 0);     if (result->gr_name[0] == '+' || result->gr_name[0] == '-')       INT_FIELD_MAYBE_NULL (result->gr_gid, ISCOLON, 0, 10, , 0)     else       INT_FIELD (result->gr_gid, ISCOLON, 0, 10,)   } )/* Read one entry from the given stream.  */int__fgetgrent_r (FILE *stream, struct group *resbuf, char *buffer, size_t buflen,	       struct group **result){  char *p;  int parse_result;  do    {      buffer[buflen - 1] = '\xff';      p = fgets (buffer, buflen, stream);      if (p == NULL && feof (stream))	{	  *result = NULL;	  return errno;	}      if (p == NULL || buffer[buflen - 1] != '\xff')	{	  *result = NULL;	  return errno = ERANGE;	}      /* Skip leading blanks.  */      while (isspace (*p))	++p;    } while (*p == '\0' || *p == '#'	/* Ignore empty and comment lines.  */	     /* Parse the line.  If it is invalid, loop to		get the next line of the file to parse.  */	     || ! (parse_result = parse_line (p, resbuf,					      (void *) buffer, buflen,					      &errno)));  if (parse_result == -1)    {      /* The parser ran out of space.  */      *result = NULL;      return errno;    }  *result = resbuf;  return 0;}