Consolidate wctomb/mbtowc calls for POSIX-1.2008

- Remove charset parameter from low level __foo_wctomb/__foo_mbtowc calls.
- Instead, create array of function for ISO and Windows codepages to point
  to function which does not require to evaluate the charset string on
  each call.  Create matching helper functions.  I.e., __iso_wctomb,
  __iso_mbtowc, __cp_wctomb and __cp_mbtowc are functions returning the
  right function pointer now.
- Create __WCTOMB/__MBTOWC macros utilizing per-reent locale and replace
  calls to __wctomb/__mbtowc with calls to __WCTOMB/__MBTOWC.
- Drop global __wctomb/__mbtowc vars.
- Utilize aforementioned changes in Cygwin to get rid of charset in other,
  calling functions and simplify the code.
- In Cygwin restrict global cygheap locale info to the job performed
  by internal_setlocale.  Use UTF-8 instead of ASCII on the fly in
  internal conversion functions.
- In Cygwin dll_entry, make sure to initialize a TLS area with a NULL
  _REENT->_locale pointer.  Add comment to explain why.

Signed-off by: Corinna Vinschen <corinna@vinschen.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/newlib/libc/stdlib/wcstombs_r.c b/newlib/libc/stdlib/wcstombs_r.c
index 3bac8a337..0680cd783 100644
--- a/newlib/libc/stdlib/wcstombs_r.c
+++ b/newlib/libc/stdlib/wcstombs_r.c
@@ -20,7 +20,7 @@ _DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),
       size_t num_bytes = 0;
       while (*pwcs != 0)
 	{
-	  bytes = __wctomb (r, buff, *pwcs++, __locale_charset (), state);
+	  bytes = __WCTOMB (r, buff, *pwcs++, state);
 	  if (bytes == -1)
 	    return -1;
 	  num_bytes += bytes;
@@ -31,7 +31,7 @@ _DEFUN (_wcstombs_r, (reent, s, pwcs, n, state),
     {
       while (n > 0)
         {
-          bytes = __wctomb (r, buff, *pwcs, __locale_charset (), state);
+          bytes = __WCTOMB (r, buff, *pwcs, state);
           if (bytes == -1)
             return -1;
           num_to_copy = (n > bytes ? bytes : (int)n);