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//@ edition:2021
#![allow(bare_trait_objects)]
trait A: Sized {
fn f(a: A) -> A;
//~^ ERROR expected a type, found a trait
//~| ERROR expected a type, found a trait
//~| ERROR associated item referring to unboxed trait object for its own trait
}
trait B {
fn f(b: B) -> B;
//~^ ERROR expected a type, found a trait
//~| ERROR expected a type, found a trait
//~| ERROR associated item referring to unboxed trait object for its own trait
}
trait C {
fn f(&self, c: C) -> C;
//~^ ERROR expected a type, found a trait
//~| ERROR expected a type, found a trait
//~| ERROR associated item referring to unboxed trait object for its own trait
}
fn main() {}
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