issue-40000.rs « issues « ui « test « src - rust - https://github.com/rust-lang/rust

blob: 320992c0764cfd4a3a87200e1c8e970b62c2d5b3 (plain)

fn main() {
    let bar: fn(&mut u32) = |_| {};

    fn foo(x: Box<Fn(&i32)>) {}
    let bar = Box::new(|x: &i32| {}) as Box<Fn(_)>;
    foo(bar); //~ ERROR E0308
}