26 lines
436 B
Rust
26 lines
436 B
Rust
// compile-flags: -Znext-solver
|
|
// check-pass
|
|
|
|
#![feature(unsized_tuple_coercion)]
|
|
|
|
trait Foo {}
|
|
|
|
impl Foo for i32 {}
|
|
|
|
fn main() {
|
|
// Unsizing via struct
|
|
let _: Box<dyn Foo> = Box::new(1i32);
|
|
|
|
// Slice unsizing
|
|
let y = [1, 2, 3];
|
|
let _: &[i32] = &y;
|
|
|
|
// Tuple unsizing
|
|
let hi = (1i32,);
|
|
let _: &(dyn Foo,) = &hi;
|
|
|
|
// Dropping auto traits
|
|
let a: &(dyn Foo + Send) = &1;
|
|
let _: &dyn Foo = a;
|
|
}
|