File: suggest-dyn-on-bare-trait-in-pat.rs

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//@ edition: 2021

trait Trait {}

impl dyn Trait {
    const CONST: () = ();
}

fn main() {
    match () {
        Trait::CONST => {}
        //~^ ERROR expected a type, found a trait
        //~| HELP you can add the `dyn` keyword if you want a trait object
    }
}