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[rustc.git] / src / test / compile-fail / object-safety-generics.rs
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1// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2// file at the top-level directory of this distribution and at
3// http://rust-lang.org/COPYRIGHT.
4//
5// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8// option. This file may not be copied, modified, or distributed
9// except according to those terms.
10
11// Check that we correctly prevent users from making trait objects
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12// from traits with generic methods, unless `where Self : Sized` is
13// present.
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14
15trait Bar {
16 fn bar<T>(&self, t: T);
17}
18
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19trait Quux {
20 fn bar<T>(&self, t: T)
21 where Self : Sized;
22}
23
1a4d82fc 24fn make_bar<T:Bar>(t: &T) -> &Bar {
e9174d1e 25 //~^ ERROR E0038
1a4d82fc 26 //~| NOTE method `bar` has generic type parameters
9cc50fc6 27 t
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28}
29
30fn make_bar_explicit<T:Bar>(t: &T) -> &Bar {
7453a54e 31 //~^ ERROR E0038
54a0048b 32 //~^^ NOTE method `bar` has generic type parameters
1a4d82fc 33 t as &Bar
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34}
35
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36fn make_quux<T:Quux>(t: &T) -> &Quux {
37 t
38}
39
40fn make_quux_explicit<T:Quux>(t: &T) -> &Quux {
41 t as &Quux
42}
43
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44fn main() {
45}