rust/src/test/compile-fail/object-safety-by-value-self.rs

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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Check that we correctly prevent users from making trait objects
// from traits with a `fn(self)` method.
trait Bar {
fn bar(self);
}
trait Baz {
fn baz(self: Self);
}
fn make_bar<T:Bar>(t: &T) -> &Bar {
t
//~^ ERROR `Bar` is not object-safe
//~| NOTE method `bar` has a receiver type of `Self`
}
fn make_bar_explicit<T:Bar>(t: &T) -> &Bar {
t as &Bar
//~^ ERROR `Bar` is not object-safe
//~| NOTE method `bar` has a receiver type of `Self`
}
fn make_baz<T:Baz>(t: &T) -> &Baz {
t
//~^ ERROR `Baz` is not object-safe
//~| NOTE method `baz` has a receiver type of `Self`
}
fn make_baz_explicit<T:Baz>(t: &T) -> &Baz {
t as &Baz
//~^ ERROR `Baz` is not object-safe
//~| NOTE method `baz` has a receiver type of `Self`
}
fn main() {
}