Match ergonomics 2024: `&` matches `&mut` on old editions

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/ui/match/ref_pat_eat_one_layer_2024/ref_pat_eat_one_layer_2021.rs b/tests/ui/match/ref_pat_eat_one_layer_2024/ref_pat_eat_one_layer_2021.rs
new file mode 100644
index 00000000000..afea249ffef
--- /dev/null
+++ b/tests/ui/match/ref_pat_eat_one_layer_2024/ref_pat_eat_one_layer_2021.rs
@@ -0,0 +1,15 @@
+//@ run-pass
+//@ edition: 2021
+//@ revisions: classic structural both
+#![allow(incomplete_features)]
+#![cfg_attr(any(classic, both), feature(ref_pat_eat_one_layer_2024))]
+#![cfg_attr(any(structural, both), feature(ref_pat_eat_one_layer_2024_structural))]
+
+pub fn main() {
+    if let &Some(Some(x)) = &Some(&mut Some(0)) {
+        let _: &u32 = x;
+    }
+    if let Some(&x) = Some(&mut 0) {
+        let _: u32 = x;
+    }
+}