| // 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); |
| //~^ ERROR overflow while adding drop-check rules for FingerTree |
| } |