| // Copyright 2015 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. |
| |
| // Tests that default impls do not have to supply all items but regular impls do. |
| |
| #![feature(specialization)] |
| |
| trait Foo { |
| fn foo_one(&self) -> &'static str; |
| fn foo_two(&self) -> &'static str; |
| } |
| |
| struct MyStruct; |
| |
| default impl<T> Foo for T { |
| fn foo_one(&self) -> &'static str { |
| "generic" |
| } |
| } |
| |
| impl Foo for MyStruct {} |
| //~^ ERROR not all trait items implemented, missing: `foo_two` [E0046] |
| |
| fn main() { |
| println!("{}", MyStruct.foo_one()); |
| } |
