rust/tests/ui/box/new-box.rs
2023-01-11 09:32:08 +00:00

31 lines
430 B
Rust

// run-pass
fn f(x: Box<isize>) {
let y: &isize = &*x;
println!("{}", *x);
println!("{}", *y);
}
trait Trait {
fn printme(&self);
}
struct Struct;
impl Trait for Struct {
fn printme(&self) {
println!("hello world!");
}
}
fn g(x: Box<dyn Trait>) {
x.printme();
let y: &dyn Trait = &*x;
y.printme();
}
fn main() {
f(Box::new(1234));
g(Box::new(Struct) as Box<dyn Trait>);
}