reason = "`cfg_eval` is a recently implemented feature"
)]
pub use crate::macros::builtin::cfg_eval;
+
+#[unstable(
+ feature = "type_ascription",
+ issue = "23416",
+ reason = "placeholder syntax for type ascription"
+)]
+#[cfg(not(bootstrap))]
+pub use crate::macros::builtin::type_ascribe;