57 lines
1.2 KiB
Rust
57 lines
1.2 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Check that a trait with by-value self is considered object-safe.
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#![feature(rustc_attrs)]
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#![allow(dead_code)]
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#![allow(trivial_casts)]
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trait Bar {
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fn bar(self);
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}
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trait Baz {
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fn baz(self: Self);
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}
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trait Quux {
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// Legal because of the where clause:
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fn baz(self: Self) where Self : Sized;
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}
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fn make_bar<T:Bar>(t: &T) -> &Bar {
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t // legal
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}
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fn make_bar_explicit<T:Bar>(t: &T) -> &Bar {
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t as &Bar // legal
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}
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fn make_baz<T:Baz>(t: &T) -> &Baz {
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t // legal
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}
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fn make_baz_explicit<T:Baz>(t: &T) -> &Baz {
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t as &Baz // legal
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}
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fn make_quux<T:Quux>(t: &T) -> &Quux {
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t
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}
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fn make_quux_explicit<T:Quux>(t: &T) -> &Quux {
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t as &Quux
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}
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#[rustc_error]
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fn main() { //~ ERROR compilation successful
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}
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