// check-pass
-#![feature(type_alias_impl_trait)]
+// revisions: min_tait full_tait
+#![feature(min_type_alias_impl_trait)]
+#![cfg_attr(full_tait, feature(type_alias_impl_trait))]
+//[full_tait]~^ WARN incomplete
#![deny(improper_ctypes)]
pub trait Foo {