rust/tests/ui/unboxed-closures/unboxed-closures-sugar-object.rs
2024-02-16 20:02:50 +00:00

26 lines
403 B
Rust

//@ run-pass
// Test unboxed closure sugar used in object types.
#![allow(dead_code)]
struct Foo<T,U> {
t: T, u: U
}
trait Getter<A,R> {
fn get(&self, arg: A) -> R;
}
struct Identity;
impl<X> Getter<X,X> for Identity {
fn get(&self, arg: X) -> X {
arg
}
}
fn main() {
let x: &dyn Getter<(i32,), (i32,)> = &Identity;
let (y,) = x.get((22,));
assert_eq!(y, 22);
}