diff --git a/intl/vasnwprintf.h b/intl/vasnwprintf.h
new file mode 100644
index 0000000..d3cef4c
--- /dev/null
+++ b/intl/vasnwprintf.h
@@ -0,0 +1,46 @@
+/* vswprintf with automatic memory allocation.
+   Copyright (C) 2002-2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+   USA.  */
+
+#ifndef _VASNWPRINTF_H
+#define _VASNWPRINTF_H
+
+/* Get va_list.  */
+#include <stdarg.h>
+
+/* Get wchar_t, size_t.  */
+#include <stddef.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* Write formatted output to a string dynamically allocated with malloc().
+   You can pass a preallocated buffer for the result in RESULTBUF and its
+   size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
+   If successful, return the address of the string (this may be = RESULTBUF
+   if no dynamic memory allocation was necessary) and set *LENGTHP to the
+   number of resulting bytes, excluding the trailing NUL.  Upon error, set
+   errno and return NULL.  */
+extern wchar_t * asnwprintf (wchar_t *resultbuf, size_t *lengthp, const wchar_t *format, ...);
+extern wchar_t * vasnwprintf (wchar_t *resultbuf, size_t *lengthp, const wchar_t *format, va_list args);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _VASNWPRINTF_H */