tinystdio: vfwprintf and vfwscanf need an unsigned wchar_t type

The numeric conversion code all assumes it has an unsigned char, so
when that code is used on wchar_t, we need a type which is known to be
unsigned. wchar_t is not such a type. borrow the UCHAR stuff from
conv_flt.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

newlib/libc/tinystdio/vfprintf.c

@@ -65,7 +65,11 @@
 
 #ifdef WIDE_CHARS
 # define CHAR wchar_t
-# define UCHAR wchar_t
+# if __SIZEOF_WCHAR_T__ == 2
+#  define UCHAR          uint16_t
+# elif __SIZEOF_WCHAR_T__ == 4
+#  define UCHAR          uint32_t
+# endif
 #else
 # define CHAR char
 # define UCHAR unsigned char

newlib/libc/tinystdio/vfscanf.c

@@ -73,7 +73,11 @@ typedef long int_scanf_t;
 # define INT wint_t
 # define MY_EOF          WEOF
 # define CHAR wchar_t
-# define UCHAR wchar_t
+# if __SIZEOF_WCHAR_T__ == 2
+#  define UCHAR          uint16_t
+# elif __SIZEOF_WCHAR_T__ == 4
+#  define UCHAR          uint32_t
+# endif
 # define GETC(s) getwc_unlocked(s)
 # define UNGETC(c,s) ungetwc(c,s)
 # define ISSPACE(c) iswspace(c)