src/test/ui/anon-params-denied-2018.rs

// Tests that anonymous parameters are a hard error in edition 2018.

// edition:2018

trait T {
    fn foo(i32); //~ expected one of `:` or `@`, found `)`

    fn bar_with_default_impl(String, String) {}
    //~^ ERROR expected one of `:` or `@`, found `,`
}

fn main() {}