#define SCM_VALIDATE_NULL(pos, scm) SCM_MAKE_VALIDATE (pos, scm, NULLP)
+#define SCM_VALIDATE_NULL_OR_NIL(pos, scm) SCM_MAKE_VALIDATE (pos, scm, NULL_OR_NIL_P)
+
#define SCM_VALIDATE_CONS(pos, scm) SCM_MAKE_VALIDATE (pos, scm, CONSP)
#define SCM_VALIDATE_LIST(pos, lst) \