2964 need POSIX 2008 locale object support
Reviewed by: Robert Mustacchi <rm@joyent.com>

*** 1,6 ****
--- 1,7 ----
  /*
+  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
   * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   * Copyright (c) 2002-2004 Tim J. Robbins.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
*** 26,39 ****
   */
  
  #include "lint.h"
  #include <stdlib.h>
  #include <wchar.h>
  #include "mblocal.h"
  
  int
! mbtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, size_t n)
  {
          static const mbstate_t initial = { 0 };
          static mbstate_t mbs;
          size_t rval;
  
--- 27,43 ----
   */
  
  #include "lint.h"
  #include <stdlib.h>
  #include <wchar.h>
+ #include <locale.h>
+ #include <xlocale.h>
  #include "mblocal.h"
  
  int
! mbtowc_l(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, size_t n,
!     locale_t loc)
  {
          static const mbstate_t initial = { 0 };
          static mbstate_t mbs;
          size_t rval;
  
*** 40,49 ****
          if (s == NULL) {
                  /* No support for state dependent encodings. */
                  mbs = initial;
                  return (0);
          }
!         rval = __mbrtowc(pwc, s, n, &mbs);
          if (rval == (size_t)-1 || rval == (size_t)-2)
                  return (-1);
          return ((int)rval);
  }
--- 44,59 ----
          if (s == NULL) {
                  /* No support for state dependent encodings. */
                  mbs = initial;
                  return (0);
          }
!         rval = mbrtowc_l(pwc, s, n, &mbs, loc);
          if (rval == (size_t)-1 || rval == (size_t)-2)
                  return (-1);
          return ((int)rval);
+ }
+ 
+ int
+ mbtowc(wchar_t *_RESTRICT_KYWD pwc, const char *_RESTRICT_KYWD s, size_t n)
+ {
+         return (mbtowc_l(pwc, s, n, uselocale(NULL)));
  }