33 lines
1006 B
Rust
33 lines
1006 B
Rust
// Copyright 2016 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.
|
|
|
|
use std::fmt;
|
|
|
|
#[deny(warnings)] trait Foo { fn foo(&self) -> (Self, Self); }
|
|
//~^ ERROR the trait bound `Self: std::marker::Sized` is not satisfied
|
|
//~| WARNING hard error
|
|
|
|
impl<T: Copy> Foo for T {
|
|
fn foo(&self) -> (Self, Self) {
|
|
(*self, *self)
|
|
}
|
|
}
|
|
|
|
#[deny(warnings)]
|
|
fn main() {
|
|
assert_eq!((11).foo(), (11, 11));
|
|
|
|
let junk: Box<fmt::Debug+Sized> = Box::new(42);
|
|
//~^ ERROR the trait cannot require that `Self : Sized`
|
|
//~| WARNING hard error
|
|
let f = format!("{:?}", junk);
|
|
assert_eq!(f, "42");
|
|
}
|