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[rustc.git] / src / test / compile-fail / object-safety-generics.rs
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
12 // from traits with generic methods, unless `where Self : Sized` is
13 // present.
14
15 trait Bar {
16 fn bar<T>(&self, t: T);
17 }
18
19 trait Quux {
20 fn bar<T>(&self, t: T)
21 where Self : Sized;
22 }
23
24 fn make_bar<T:Bar>(t: &T) -> &Bar {
25 //~^ ERROR E0038
26 //~| NOTE method `bar` has generic type parameters
27 t
28 }
29
30 fn make_bar_explicit<T:Bar>(t: &T) -> &Bar {
31 //~^ ERROR E0038
32 //~^^ NOTE method `bar` has generic type parameters
33 t as &Bar
34 }
35
36 fn make_quux<T:Quux>(t: &T) -> &Quux {
37 t
38 }
39
40 fn make_quux_explicit<T:Quux>(t: &T) -> &Quux {
41 t as &Quux
42 }
43
44 fn main() {
45 }