The following patch uses the correct types/values in a few places.
Tested on x86-64, ok to commit?

Andreas

2006-01-15  Andreas Jaeger  <aj@suse.de>

	[BZ #2079]
	* libio/fputwc_u.c (fputwc_unlocked): Fix return value.
	* libio/getwc_u.c (__getwc_unlocked): Likewise.
	* libio/wfileops.c (_IO_wdo_write): Likewise.

	[BZ #2078]
	* libio/fputwc.c (fputwc): Use proper type for result.
	* libio/ioungetwc.c (ungetwc): Likewise.

============================================================
Index: libio/fputwc.c
--- libio/fputwc.c	29 Aug 2003 19:58:26 -0000	1.4
+++ libio/fputwc.c	15 Jan 2006 16:08:15 -0000
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993,1996,1997,1998,1999,2003 Free Software Foundation, Inc.
+/* Copyright (C) 1993,1996,1997,1998,1999,2003, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -33,7 +33,7 @@ fputwc (wc, fp)
      wchar_t wc;
      _IO_FILE *fp;
 {
-  int result;
+  wint_t result;
   CHECK_FILE (fp, EOF);
   _IO_acquire_lock (fp);
   if (_IO_fwide (fp, 1) < 0)
============================================================
Index: libio/ioungetwc.c
--- libio/ioungetwc.c	29 Aug 2003 19:58:27 -0000	1.5
+++ libio/ioungetwc.c	15 Jan 2006 16:08:15 -0000
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1996, 1997, 1998, 1999, 2001, 2002, 2003
+/* Copyright (C) 1993, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2006
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -34,7 +34,7 @@ ungetwc (c, fp)
      wint_t c;
      _IO_FILE *fp;
 {
-  int result;
+  wint_t result;
   CHECK_FILE (fp, WEOF);
   _IO_acquire_lock (fp);
   _IO_fwide (fp, 1);
============================================================
Index: libio/getwc_u.c
--- libio/getwc_u.c	6 Jul 2001 04:54:55 -0000	1.3
+++ libio/getwc_u.c	15 Jan 2006 16:08:15 -0000
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993,1995,1996,1997,1999,2000  Free Software Foundation, Inc.
+/* Copyright (C) 1993,1995,1996,1997,1999,2000, 2006  Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -33,7 +33,7 @@
 wint_t
 __getwc_unlocked (FILE *fp)
 {
-  CHECK_FILE (fp, EOF);
+  CHECK_FILE (fp, WEOF);
   return _IO_getwc_unlocked (fp);
 }
 
============================================================
Index: libio/wfileops.c
--- libio/wfileops.c	14 Jan 2004 18:40:03 -0000	1.29
+++ libio/wfileops.c	15 Jan 2006 16:08:16 -0000
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993,1995,1997-2003,2004 Free Software Foundation, Inc.
+/* Copyright (C) 1993,1995,1997-2003,2004, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Ulrich Drepper <drepper@cygnus.com>.
    Based on the single byte version by Per Bothner <bothner@cygnus.com>.
@@ -69,7 +69,7 @@ _IO_wdo_write (fp, data, to_do)
 	{
 	  if (_IO_new_do_write (fp, fp->_IO_write_base,
 				fp->_IO_write_ptr - fp->_IO_write_base) == EOF)
-	    return EOF;
+	    return WEOF;
 	}
 
       do
============================================================
Index: libio/fputwc_u.c
--- libio/fputwc_u.c	6 Jul 2001 04:54:54 -0000	1.3
+++ libio/fputwc_u.c	15 Jan 2006 16:08:16 -0000
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1996, 1997, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1996, 1997, 1999, 2006 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -35,7 +35,7 @@ fputwc_unlocked (wc, fp)
      wchar_t wc;
      _IO_FILE *fp;
 {
-  CHECK_FILE (fp, EOF);
+  CHECK_FILE (fp, WEOF);
   if (_IO_fwide (fp, 1) < 0)
     return WEOF;
   return _IO_putwc_unlocked (wc, fp);

-- 
 Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj/
  SUSE Linux Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
   GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126