Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/src/test/ui/associated-types/associated-types-enum-field-named.rs b/src/test/ui/associated-types/associated-types-enum-field-named.rs
new file mode 100644
index 000000000..896d67213
--- /dev/null
+++ b/src/test/ui/associated-types/associated-types-enum-field-named.rs
@@ -0,0 +1,35 @@
+// run-pass
+// Test associated types appearing in struct-like enum variants.
+
+
+use self::VarValue::*;
+
+pub trait UnifyKey {
+    type Value;
+    fn to_index(&self) -> usize;
+}
+
+pub enum VarValue<K:UnifyKey> {
+    Redirect { to: K },
+    Root { value: K::Value, rank: usize },
+}
+
+fn get<'a,K:UnifyKey<Value=Option<V>>,V>(table: &'a Vec<VarValue<K>>, key: &K) -> &'a Option<V> {
+    match table[key.to_index()] {
+        VarValue::Redirect { to: ref k } => get(table, k),
+        VarValue::Root { value: ref v, rank: _ } => v,
+    }
+}
+
+impl UnifyKey for usize {
+    type Value = Option<char>;
+    fn to_index(&self) -> usize { *self }
+}
+
+fn main() {
+    let table = vec![/* 0 */ Redirect { to: 1 },
+                     /* 1 */ Redirect { to: 3 },
+                     /* 2 */ Root { value: Some('x'), rank: 0 },
+                     /* 3 */ Redirect { to: 2 }];
+    assert_eq!(get(&table, &0), &Some('x'));
+}