rust/tests/ui/dyn-star/dyn-star-to-dyn.rs
2024-02-16 20:02:50 +00:00

18 lines
439 B
Rust

//@ run-pass
#![feature(dyn_star)]
//~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes
use std::fmt::Debug;
fn main() {
let x: dyn* Debug = &42;
let x = Box::new(x) as Box<dyn Debug>;
assert_eq!("42", format!("{x:?}"));
// Also test opposite direction.
let x: Box<dyn Debug> = Box::new(42);
let x = &x as dyn* Debug;
assert_eq!("42", format!("{x:?}"));
}