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

38 lines
787 B
Rust

// check that dropck does the right thing with misc. Ty variants
use std::fmt;
struct NoisyDrop<T: fmt::Debug>(T);
impl<T: fmt::Debug> Drop for NoisyDrop<T> {
fn drop(&mut self) {
let _ = vec!["0wned"];
println!("dropping {:?}", self.0)
}
}
trait Associator {
type As;
}
impl<T: fmt::Debug> Associator for T {
type As = NoisyDrop<T>;
}
struct Wrap<A: Associator>(<A as Associator>::As);
fn projection() {
let (_w, bomb);
bomb = vec![""];
_w = Wrap::<&[&str]>(NoisyDrop(&bomb));
}
//~^^ ERROR `bomb` does not live long enough
fn closure() {
let (_w,v);
v = vec![""];
_w = {
let u = NoisyDrop(&v);
//~^ ERROR `v` does not live long enough
move || u.0.len()
};
}
fn main() { closure(); projection() }