rust/tests/ui/impl-trait/issues/issue-74282.rs

#![feature(type_alias_impl_trait)]

type Closure = impl Fn() -> u64;
struct Anonymous(Closure);

fn bop(_: Closure) {
    let y = || -> Closure { || 3 };
    Anonymous(|| {
        //~^ ERROR mismatched types
        3 //~^^ ERROR mismatched types
    })
}

fn main() {}