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