void hbytes_sentinel(HBytes_Value *returns);
void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
-void hbytes_free(HBytes_Value *frees);
+void hbytes_free(const HBytes_Value *frees);
/* _empty, _sentinel and _array do not free or read the old value;
* _free it first if needed. _free leaves it garbage, so you
* have to call _empty to reuse it. _arrayspace doesn't fill