//@ aux-build:generics_of_parent_impl_trait.rs #![feature(generic_const_exprs)] #![allow(incomplete_features)] extern crate generics_of_parent_impl_trait; fn main() { // check for `impl Trait<{ const }>` which has a parent of a `DefKind::TyParam` generics_of_parent_impl_trait::foo([()]); //~^ error: type annotations needed }