mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 06:22:00 +00:00
28 lines
616 B
Rust
28 lines
616 B
Rust
// run-pass
|
|
// Check tautalogically false `Sized` bounds
|
|
#![feature(trivial_bounds)]
|
|
#![allow(unused)]
|
|
|
|
trait A {}
|
|
|
|
impl A for i32 {}
|
|
|
|
struct T<X: ?Sized> {
|
|
x: X,
|
|
}
|
|
|
|
struct S(str, str) where str: Sized;
|
|
//~^ WARNING Sized does not depend on any type or lifetime
|
|
|
|
fn unsized_local() where for<'a> T<dyn A + 'a>: Sized {
|
|
//~^ WARNING Sized does not depend on any type or lifetime
|
|
let x: T<dyn A> = *(Box::new(T { x: 1 }) as Box<T<dyn A>>);
|
|
}
|
|
|
|
fn return_str() -> str where str: Sized {
|
|
//~^ WARNING Sized does not depend on any type or lifetime
|
|
*"Sized".to_string().into_boxed_str()
|
|
}
|
|
|
|
fn main() {}
|