1 // astconv uses `FreshTy(0)` as a dummy `Self` type when instanciating trait objects.
2 // This `FreshTy(0)` can leak into substs, causing ICEs in several places.
3 // Using `save-analysis` triggers type-checking `f` that would be normally skipped
4 // as `type_of` emitted an error.
6 // compile-flags: -Zsave-analysis
8 #![feature(trait_alias)]
10 pub trait SelfInput = Fn(&mut Self);
12 pub fn f(_f: &dyn SelfInput) {}
13 //~^ ERROR the trait alias `SelfInput` cannot be made into an object [E0038]