/* The number of placeholders in the enumerated-keys hash */
#define XHvPLACEHOLDERS(xhv) ((xhv)->xhv_placeholders)
-/* the number of keys that exist() (i.e. excluding placeholers) */
-#define XHvUSEDKEYS(xhv) (XHvTOTALKEYS(xhv) - XHvPLACEHOLDERS(xhv))
+/* the number of keys that exist() (i.e. excluding placeholders) */
+#define XHvUSEDKEYS(xhv) (XHvTOTALKEYS(xhv) - (IV)XHvPLACEHOLDERS(xhv))
/*
* HvKEYS gets the number of keys that actually exist(), and is provided