Issue #14738: Speed-up UTF-8 decoding on non-ASCII data. Patch by Serhiy Storchaka.
diff --git a/Objects/stringlib/ucs2lib.h b/Objects/stringlib/ucs2lib.h
index a508905..45e5729 100644
--- a/Objects/stringlib/ucs2lib.h
+++ b/Objects/stringlib/ucs2lib.h
@@ -7,6 +7,7 @@
#define STRINGLIB(F) ucs2lib_##F
#define STRINGLIB_OBJECT PyUnicodeObject
#define STRINGLIB_SIZEOF_CHAR 2
+#define STRINGLIB_MAX_CHAR 0xFFFFu
#define STRINGLIB_CHAR Py_UCS2
#define STRINGLIB_TYPE_NAME "unicode"
#define STRINGLIB_PARSE_CODE "U"