nullentry = _nl_init_domain_conv (domain_file, domain, domainbinding);
domain->conversions = NULL; domain->nconversions = 0;   nullentry = _nl_find_msg (domain_file, domainbinding, "", 0, &nullentrylen);
_nl_load_domain (domain_file, domainbinding)     struct loaded_l10nfile *domain_file;     struct binding *domainbinding;{  __libc_lock_define_initialized_recursive (static, lock);  int fd = -1;  size_t size;#ifdef _LIBC  struct stat64 st;#else  struct stat st;#endif  struct mo_file_header *data = (struct mo_file_header *) -1;  int use_mmap = 0;  struct loaded_domain *domain;  int revision;  const char *nullentry;  __libc_lock_lock_recursive (lock);  if (domain_file->decided != 0)    {      /* There are two possibilities:         + is is the same thread calling again during this	   initialization via _nl_init_domain_conv and _nl_find_msg.  We	   have initialized everything this call needs.	 + this is another thread which tried to initialize this object.           Not necessary anymore since if the lock is available this	   is finished.      */      __libc_lock_unlock_recursive (lock);      return;    }  domain_file->decided = -1;  domain_file->data = NULL;  /* Note that it would be useless to store domainbinding in domain_file     because domainbinding might be == NULL now but != NULL later (after     a call to bind_textdomain_codeset).  */  /* If the record does not represent a valid locale the FILENAME     might be NULL.  This can happen when according to the given     specification the locale file name is different for XPG and CEN     syntax.  */  if (domain_file->filename == NULL)    goto out;  /* Try to open the addressed file.  */  fd = open (domain_file->filename, O_RDONLY);  if (fd == -1)    goto out;  /* We must know about the size of the file.  */  if (#ifdef _LIBC      __builtin_expect (fstat64 (fd, &st) != 0, 0)#else      __builtin_expect (fstat (fd, &st) != 0, 0)#endif      || __builtin_expect ((size = (size_t) st.st_size) != st.st_size, 0)      || __builtin_expect (size < sizeof (struct mo_file_header), 0))    /* Something went wrong.  */    goto out;;#ifdef HAVE_MMAP  /* Now we are ready to load the file.  If mmap() is available we try     this first.  If not available or it failed we try to load it.  */  data = (struct mo_file_header *) mmap (NULL, size, PROT_READ,					 MAP_PRIVATE, fd, 0);  if (__builtin_expect (data != MAP_FAILED, 1))    {      /* mmap() call was successful.  */      close (fd);      fd = -1;      use_mmap = 1;    }#endif  /* If the data is not yet available (i.e. mmap'ed) we try to load     it manually.  */  if (data == MAP_FAILED)    {      size_t to_read;      char *read_ptr;      data = (struct mo_file_header *) malloc (size);      if (data == NULL)	goto out;      to_read = size;      read_ptr = (char *) data;      do	{	  long int nb = (long int) TEMP_FAILURE_RETRY (read (fd, read_ptr,							     to_read));	  if (nb <= 0)	    goto out;	  read_ptr += nb;	  to_read -= nb;	}      while (to_read > 0);      close (fd);      fd = -1;    }  /* Using the magic number we can test whether it really is a message     catalog file.  */  if (__builtin_expect (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED,			0))    {      /* The magic number is wrong: not a message catalog file.  */#ifdef HAVE_MMAP      if (use_mmap)	munmap ((caddr_t) data, size);      else#endif	free (data);      goto out;    }  domain = (struct loaded_domain *) malloc (sizeof (struct loaded_domain));  if (domain == NULL)    goto out;  domain_file->data = domain;  domain->data = (char *) data;  domain->use_mmap = use_mmap;  domain->mmap_size = size;  domain->must_swap = data->magic != _MAGIC;  domain->malloced = NULL;  /* Fill in the information about the available tables.  */  revision = W (domain->must_swap, data->revision);  /* We support only the major revisions 0 and 1.  */  switch (revision >> 16)    {    case 0:    case 1:      domain->nstrings = W (domain->must_swap, data->nstrings);      domain->orig_tab = (const struct string_desc *)	((char *) data + W (domain->must_swap, data->orig_tab_offset));      domain->trans_tab = (const struct string_desc *)	((char *) data + W (domain->must_swap, data->trans_tab_offset));      domain->hash_size = W (domain->must_swap, data->hash_tab_size);      domain->hash_tab =	(domain->hash_size > 2	 ? (const nls_uint32 *)	   ((char *) data + W (domain->must_swap, data->hash_tab_offset))	 : NULL);      domain->must_swap_hash_tab = domain->must_swap;      /* Now dispatch on the minor revision.  */      switch (revision & 0xffff)	{	case 0:	  domain->n_sysdep_strings = 0;	  domain->orig_sysdep_tab = NULL;	  domain->trans_sysdep_tab = NULL;	  break;	case 1:	default:	  {	    nls_uint32 n_sysdep_strings;	    if (domain->hash_tab == NULL)	      /* This is invalid.  These minor revisions need a hash table.  */	      goto invalid;	    n_sysdep_strings =	      W (domain->must_swap, data->n_sysdep_strings);	    if (n_sysdep_strings > 0)	      {		nls_uint32 n_sysdep_segments;		const struct sysdep_segment *sysdep_segments;		const char **sysdep_segment_values;		const nls_uint32 *orig_sysdep_tab;		const nls_uint32 *trans_sysdep_tab;		nls_uint32 n_inmem_sysdep_strings;		size_t memneed;		char *mem;		struct sysdep_string_desc *inmem_orig_sysdep_tab;		struct sysdep_string_desc *inmem_trans_sysdep_tab;		nls_uint32 *inmem_hash_tab;		unsigned int i, j;		/* Get the values of the system dependent segments.  */		n_sysdep_segments =		  W (domain->must_swap, data->n_sysdep_segments);		sysdep_segments = (const struct sysdep_segment *)		  ((char *) data		   + W (domain->must_swap, data->sysdep_segments_offset));		sysdep_segment_values =		  alloca (n_sysdep_segments * sizeof (const char *));		for (i = 0; i < n_sysdep_segments; i++)		  {		    const char *name =		      (char *) data		      + W (domain->must_swap, sysdep_segments[i].offset);		    nls_uint32 namelen =		      W (domain->must_swap, sysdep_segments[i].length);		    if (!(namelen > 0 && name[namelen - 1] == '\0'))		      {			freea (sysdep_segment_values);			goto invalid;		      }		    sysdep_segment_values[i] = get_sysdep_segment_value (name);		  }		orig_sysdep_tab = (const nls_uint32 *)		  ((char *) data		   + W (domain->must_swap, data->orig_sysdep_tab_offset));		trans_sysdep_tab = (const nls_uint32 *)		  ((char *) data		   + W (domain->must_swap, data->trans_sysdep_tab_offset));		/* Compute the amount of additional memory needed for the		   system dependent strings and the augmented hash table.		   At the same time, also drop string pairs which refer to		   an undefined system dependent segment.  */		n_inmem_sysdep_strings = 0;		memneed = domain->hash_size * sizeof (nls_uint32);		for (i = 0; i < n_sysdep_strings; i++)		  {		    int valid = 1;		    size_t needs[2];		    for (j = 0; j < 2; j++)		      {			const struct sysdep_string *sysdep_string =			  (const struct sysdep_string *)			  ((char *) data			   + W (domain->must_swap,				j == 0				? orig_sysdep_tab[i]				: trans_sysdep_tab[i]));			size_t need = 0;			const struct segment_pair *p = sysdep_string->segments;			if (W (domain->must_swap, p->sysdepref) != SEGMENTS_END)			  for (p = sysdep_string->segments;; p++)			    {			      nls_uint32 sysdepref;			      need += W (domain->must_swap, p->segsize);			      sysdepref = W (domain->must_swap, p->sysdepref);			      if (sysdepref == SEGMENTS_END)				break;			      if (sysdepref >= n_sysdep_segments)				{				  /* Invalid.  */				  freea (sysdep_segment_values);				  goto invalid;				}			      if (sysdep_segment_values[sysdepref] == NULL)				{				  /* This particular string pair is invalid.  */				  valid = 0;				  break;				}			      need += strlen (sysdep_segment_values[sysdepref]);			    }			needs[j] = need;			if (!valid)			  break;		      }		    if (valid)		      {			n_inmem_sysdep_strings++;			memneed += needs[0] + needs[1];		      }		  }		memneed += 2 * n_inmem_sysdep_strings			   * sizeof (struct sysdep_string_desc);		if (n_inmem_sysdep_strings > 0)		  {		    unsigned int k;		    /* Allocate additional memory.  */		    mem = (char *) malloc (memneed);		    if (mem == NULL)		      goto invalid;		    domain->malloced = mem;		    inmem_orig_sysdep_tab = (struct sysdep_string_desc *) mem;		    mem += n_inmem_sysdep_strings			   * sizeof (struct sysdep_string_desc);		    inmem_trans_sysdep_tab = (struct sysdep_string_desc *) mem;		    mem += n_inmem_sysdep_strings			   * sizeof (struct sysdep_string_desc);		    inmem_hash_tab = (nls_uint32 *) mem;		    mem += domain->hash_size * sizeof (nls_uint32);		    /* Compute the system dependent strings.  */		    k = 0;		    for (i = 0; i < n_sysdep_strings; i++)		      {			int valid = 1;			for (j = 0; j < 2; j++)			  {			    const struct sysdep_string *sysdep_string =			      (const struct sysdep_string *)			      ((char *) data			       + W (domain->must_swap,				    j == 0				    ? orig_sysdep_tab[i]				    : trans_sysdep_tab[i]));			    const struct segment_pair *p =			      sysdep_string->segments;			    if (W (domain->must_swap, p->sysdepref)				!= SEGMENTS_END)			      for (p = sysdep_string->segments;; p++)				{				  nls_uint32 sysdepref;				  sysdepref =				    W (domain->must_swap, p->sysdepref);				  if (sysdepref == SEGMENTS_END)				    break;				  if (sysdep_segment_values[sysdepref] == NULL)				    {				      /* This particular string pair is					 invalid.  */				      valid = 0;				      break;				    }				}			    if (!valid)			      break;			  }			if (valid)			  {			    for (j = 0; j < 2; j++)			      {				const struct sysdep_string *sysdep_string =				  (const struct sysdep_string *)				  ((char *) data				   + W (domain->must_swap,					j == 0					? orig_sysdep_tab[i]					: trans_sysdep_tab[i]));				const char *static_segments =				  (char *) data				  + W (domain->must_swap, sysdep_string->offset);				const struct segment_pair *p =				  sysdep_string->segments;				/* Concatenate the segments, and fill				   inmem_orig_sysdep_tab[k] (for j == 0) and				   inmem_trans_sysdep_tab[k] (for j == 1).  */				struct sysdep_string_desc *inmem_tab_entry =				  (j == 0				   ? inmem_orig_sysdep_tab				   : inmem_trans_sysdep_tab)				  + k;				if (W (domain->must_swap, p->sysdepref)				    == SEGMENTS_END)				  {				    /* Only one static segment.  */				    inmem_tab_entry->length =				      W (domain->must_swap, p->segsize);				    inmem_tab_entry->pointer = static_segments;				  }				else				  {				    inmem_tab_entry->pointer = mem;				    for (p = sysdep_string->segments;; p++)				      {					nls_uint32 segsize =					  W (domain->must_swap, p->segsize);					nls_uint32 sysdepref =					  W (domain->must_swap, p->sysdepref);					size_t n;					if (segsize > 0)					  {					    memcpy (mem, static_segments, segsize);					    mem += segsize;					    static_segments += segsize;					  }					if (sysdepref == SEGMENTS_END)					  break;					n = strlen (sysdep_segment_values[sysdepref]);					memcpy (mem, sysdep_segment_values[sysdepref], n);					mem += n;				      }				    inmem_tab_entry->length =				      mem - inmem_tab_entry->pointer;				  }			      }			    k++;			  }		      }		    if (k != n_inmem_sysdep_strings)		      abort ();		    /* Compute the augmented hash table.  */		    for (i = 0; i < domain->hash_size; i++)		      inmem_hash_tab[i] =			W (domain->must_swap_hash_tab, domain->hash_tab[i]);		    for (i = 0; i < n_inmem_sysdep_strings; i++)		      {			const char *msgid = inmem_orig_sysdep_tab[i].pointer;			nls_uint32 hash_val = __hash_string (msgid);			nls_uint32 idx = hash_val % domain->hash_size;			nls_uint32 incr =			  1 + (hash_val % (domain->hash_size - 2));			for (;;)			  {			    if (inmem_hash_tab[idx] == 0)			      {				/* Hash table entry is empty.  Use it.  */				inmem_hash_tab[idx] = 1 + domain->nstrings + i;				break;			      }			    if (idx >= domain->hash_size - incr)			      idx -= domain->hash_size - incr;			    else			      idx += incr;			  }		      }		    domain->n_sysdep_strings = n_inmem_sysdep_strings;		    domain->orig_sysdep_tab = inmem_orig_sysdep_tab;		    domain->trans_sysdep_tab = inmem_trans_sysdep_tab;		    domain->hash_tab = inmem_hash_tab;		    domain->must_swap_hash_tab = 0;		  }		else		  {		    domain->n_sysdep_strings = 0;		    domain->orig_sysdep_tab = NULL;		    domain->trans_sysdep_tab = NULL;		  }		freea (sysdep_segment_values);	      }	    else	      {		domain->n_sysdep_strings = 0;		domain->orig_sysdep_tab = NULL;		domain->trans_sysdep_tab = NULL;	      }	  }	  break;	}      break;    default:      /* This is an invalid revision.  */    invalid:      /* This is an invalid .mo file.  */      if (domain->malloced)	free (domain->malloced);#ifdef HAVE_MMAP      if (use_mmap)	munmap ((caddr_t) data, size);      else#endif	free (data);      free (domain);      domain_file->data = NULL;      goto out;    }  /* Now initialize the character set converter from the character set     the file is encoded with (found in the header entry) to the domain's     specified character set or the locale's character set.  */  nullentry = _nl_init_domain_conv (domain_file, domain, domainbinding);  /* Also look for a plural specification.  */  EXTRACT_PLURAL_EXPRESSION (nullentry, &domain->plural, &domain->nplurals); out:  if (fd != -1)    close (fd);  domain_file->decided = 1;  __libc_lock_unlock_recursive (lock);}