]> git.lizzy.rs Git - rust.git/blob - tests/ui/associated-types/associated-types-struct-field-numbered.rs
Rollup merge of #106106 - jyn514:remote-tracking-branch, r=Mark-Simulacrum
[rust.git] / tests / ui / associated-types / associated-types-struct-field-numbered.rs
1 // run-pass
2 // Test that we correctly normalize the type of a struct field
3 // which has an associated type.
4
5
6 pub trait UnifyKey {
7     type Value;
8
9     fn dummy(&self) { }
10 }
11
12 pub struct Node<K:UnifyKey>(#[allow(unused_tuple_struct_fields)] K, K::Value);
13
14 fn foo<K : UnifyKey<Value=Option<V>>,V : Clone>(node: &Node<K>) -> Option<V> {
15     node.1.clone()
16 }
17
18 impl UnifyKey for i32 {
19     type Value = Option<u32>;
20 }
21
22 impl UnifyKey for u32 {
23     type Value = Option<i32>;
24 }
25
26 pub fn main() {
27     let node: Node<i32> = Node(1, Some(22));
28     assert_eq!(foo(&node), Some(22));
29
30     let node: Node<u32> = Node(1, Some(22));
31     assert_eq!(foo(&node), Some(22));
32 }