21 lines
327 B
Rust
21 lines
327 B
Rust
|
// run-pass
|
||
|
|
|
||
|
|
use std::cell::UnsafeCell;
|
||
|
|
use std::collections::HashMap;
|
||
|
|
|
||
|
|
struct OnceCell<T> {
|
||
|
|
_value: UnsafeCell<Option<T>>,
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<T> OnceCell<T> {
|
||
|
|
const INIT: OnceCell<T> = OnceCell {
|
||
|
|
_value: UnsafeCell::new(None),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn crash<K, T>() {
|
||
|
|
let _ = OnceCell::<HashMap<K, T>>::INIT;
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {}
|