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// run-pass
#![allow(unused_variables)]
#![allow(stable_features)]
// Test a very simple custom DST coercion.
#![feature(core, rc_weak)]
use std::cell::RefCell;
use std::rc::{Rc, Weak};
trait Baz {
fn get(&self) -> i32;
}
impl Baz for i32 {
fn get(&self) -> i32 {
*self
}
}
fn main() {
let a: Rc<[i32; 3]> = Rc::new([1, 2, 3]);
let b: Rc<[i32]> = a;
assert_eq!(b[0], 1);
assert_eq!(b[1], 2);
assert_eq!(b[2], 3);
let a: Rc<i32> = Rc::new(42);
let b: Rc<dyn Baz> = a.clone();
assert_eq!(b.get(), 42);
let c: Weak<i32> = Rc::downgrade(&a);
let d: Weak<dyn Baz> = c.clone();
let _c = b.clone();
let a: Rc<RefCell<i32>> = Rc::new(RefCell::new(42));
let b: Rc<RefCell<dyn Baz>> = a.clone();
assert_eq!(b.borrow().get(), 42);
// FIXME
let c: Weak<RefCell<dyn Baz>> = Rc::downgrade(&a) as Weak<_>;
}
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