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// Issue 22443: Reject code using non-regular types that would
// otherwise cause dropck to loop infinitely.
use std::marker::PhantomData;
struct Digit<T> {
elem: T
}
struct Node<T:'static> { m: PhantomData<&'static T> }
enum FingerTree<T:'static> {
Single(T),
// Bug report said Digit after Box would stack overflow (versus
// Digit before Box; see dropck_no_diverge_on_nonregular_2).
Deep(
Box<FingerTree<Node<T>>>,
Digit<T>,
)
}
fn main() {
let ft = //~ ERROR overflow while adding drop-check rules for FingerTree
FingerTree::Single(1);
}
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