rust/tests/fail/unsized-local.rs
2022-07-11 11:48:56 +00:00

24 lines
512 B
Rust

#![feature(unsized_locals)]
#![allow(incomplete_features)]
fn main() {
pub trait Foo {
fn foo(self) -> String;
}
struct A;
impl Foo for A {
fn foo(self) -> String {
format!("hello")
}
}
let x = *(Box::new(A) as Box<dyn Foo>); //~ERROR: unsized locals are not supported
assert_eq!(x.foo(), format!("hello"));
// I'm not sure whether we want this to work
let x = Box::new(A) as Box<dyn Foo>;
assert_eq!(x.foo(), format!("hello"));
}