39 lines
718 B
Rust
39 lines
718 B
Rust
#![allow(dead_code)]
|
|
#![feature(rustc_attrs)]
|
|
|
|
// Check that bounds on type parameters (other than `Self`) do not
|
|
// influence variance.
|
|
|
|
trait Getter<T> {
|
|
fn get(&self) -> T;
|
|
}
|
|
|
|
trait Setter<T> {
|
|
fn get(&self, _: T);
|
|
}
|
|
|
|
#[rustc_variance]
|
|
struct TestStruct<U,T:Setter<U>> { //~ ERROR [U: +, T: +]
|
|
t: T, u: U
|
|
}
|
|
|
|
#[rustc_variance]
|
|
enum TestEnum<U,T:Setter<U>> { //~ ERROR [U: *, T: +]
|
|
//~^ ERROR: `U` is never used
|
|
Foo(T)
|
|
}
|
|
|
|
#[rustc_variance]
|
|
struct TestContraStruct<U,T:Setter<U>> { //~ ERROR [U: *, T: +]
|
|
//~^ ERROR: `U` is never used
|
|
t: T
|
|
}
|
|
|
|
#[rustc_variance]
|
|
struct TestBox<U,T:Getter<U>+Setter<U>> { //~ ERROR [U: *, T: +]
|
|
//~^ ERROR: `U` is never used
|
|
t: T
|
|
}
|
|
|
|
pub fn main() { }
|