mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-25 08:13:41 +00:00
19 lines
440 B
Rust
19 lines
440 B
Rust
// Auto-trait-based version of #29859, supertrait version. Test that using
|
|
// a simple auto trait `..` impl alone still doesn't allow arbitrary bounds
|
|
// to be synthesized.
|
|
|
|
#![feature(auto_traits)]
|
|
#![feature(negative_impls)]
|
|
|
|
auto trait Magic: Copy {} //~ ERROR E0568
|
|
|
|
fn copy<T: Magic>(x: T) -> (T, T) { (x, x) }
|
|
|
|
#[derive(Debug)]
|
|
struct NoClone;
|
|
|
|
fn main() {
|
|
let (a, b) = copy(NoClone); //~ ERROR
|
|
println!("{:?} {:?}", a, b);
|
|
}
|