rust/tests/ui/cast/issue-106883-is-empty.rs

28 lines
551 B
Rust

use std::ops::Deref;
struct Foo;
impl Deref for Foo {
type Target = [u8];
fn deref(&self) -> &Self::Target {
&[]
}
}
fn main() {
let _ = "foo" as bool;
//~^ ERROR casting `&'static str` as `bool` is invalid [E0606]
let _ = String::from("foo") as bool;
//~^ ERROR non-primitive cast: `String` as `bool` [E0605]
let _ = Foo as bool;
//~^ ERROR non-primitive cast: `Foo` as `bool` [E0605]
}
fn _slice(bar: &[i32]) -> bool {
bar as bool
//~^ ERROR casting `&[i32]` as `bool` is invalid [E0606]
}