// run-pass
+#![feature(allow_internal_unstable)]
+#![feature(const_fn_fn_ptr_basics)]
#![feature(rustc_attrs, staged_api)]
#![stable(feature = "rust1", since = "1.0.0")]
#[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_allow_const_fn_ptr]
#[rustc_const_stable(since="1.0.0", feature = "mep")]
+#[allow_internal_unstable(const_fn_fn_ptr_basics)]
const fn takes_fn_ptr(_: fn()) {}
const FN: fn() = || ();