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 `:`
    //~| ERROR expected one of `:`

    // do not complain about missing `b`
    fn baz(a:usize, b, c: usize) -> usize { //~ ERROR expected one of `:`
        a + b + c
    }
}

fn main() {}