mirror of https://github.com/rust-lang/rust.git
34 lines
754 B
Rust
34 lines
754 B
Rust
//@ run-pass
|
|
#![allow(incomplete_features, unused_braces, unused_parens)]
|
|
#![feature(unsized_tuple_coercion, unsized_locals, unsized_fn_params)]
|
|
|
|
struct A<X: ?Sized>(#[allow(dead_code)] X);
|
|
|
|
fn udrop<T: ?Sized>(_x: T) {}
|
|
fn foo() -> Box<[u8]> {
|
|
Box::new(*b"foo")
|
|
}
|
|
fn tfoo() -> Box<(i32, [u8])> {
|
|
Box::new((42, *b"foo"))
|
|
}
|
|
fn afoo() -> Box<A<[u8]>> {
|
|
Box::new(A(*b"foo"))
|
|
}
|
|
|
|
impl std::ops::Add<i32> for A<[u8]> {
|
|
type Output = ();
|
|
fn add(self, _rhs: i32) -> Self::Output {}
|
|
}
|
|
|
|
fn main() {
|
|
udrop::<[u8]>(loop {
|
|
break *foo();
|
|
});
|
|
udrop::<[u8]>(if true { *foo() } else { *foo() });
|
|
udrop::<[u8]>({ *foo() });
|
|
udrop::<[u8]>((*foo()));
|
|
udrop::<[u8]>((*tfoo()).1);
|
|
*afoo() + 42;
|
|
udrop as fn([u8]);
|
|
}
|