rem: du_files (char **files, int ftw_flags)
add: du_files (char **files, int bit_flags)
context: du_files (char **files, int ftw_flags){  int fail = 0;  int i;  for (i = 0; files[i]; i++)    {      char *file = files[i];      char *orig = file;      int err;      arg_length = 0;      if (!print_totals)	hash_clear (htab);      /* When dereferencing only command line arguments, we're using	 nftw's FTW_PHYS flag, so a symlink-to-directory specified on	 the command line wouldn't normally be dereferenced.  To work	 around that, we incur the overhead of appending `/.' (or `.')	 now, and later removing it each time we output the name of	 a derived file or directory name.  */      if (opt_dereference_arguments && is_symlink_to_dir (file))	{	  size_t len = strlen (file);	  /* Append `/.', but if there's already a trailing slash,	     append only the `.'.  */	  char const *suffix = (file[len - 1] == '/' ? "." : "/.");	  char *new_file;	  suffix_length = strlen (suffix);	  new_file = xmalloc (len + suffix_length + 1);	  memcpy (mempcpy (new_file, file, len), suffix, suffix_length + 1);	  arg_length = len;	  file = new_file;	}      err = nftw (file, process_file, MAX_N_DESCRIPTORS, ftw_flags);      if (err)	error (0, errno, "%s", quote (orig));      fail |= err;      if (arg_length)	free (file);    }  if (print_totals)    print_size (tot_size, _("total"));  return fail;}