1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-81809.rs b/src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-81809.rs
new file mode 100644
index 000000000..f6ab9c203
--- /dev/null
+++ b/src/test/ui/higher-rank-trait-bounds/normalize-under-binder/issue-81809.rs
@@ -0,0 +1,21 @@
+// check-pass
+
+pub trait Indexable {
+    type Idx;
+}
+impl Indexable for u8 {
+    type Idx = u8;
+}
+impl Indexable for u16 {
+    type Idx = u16;
+}
+
+pub trait Indexer<T: Indexable>: std::ops::Index<T::Idx, Output = T> {}
+
+trait StoreIndex: Indexer<u8> + Indexer<u16> {}
+
+fn foo(st: &impl StoreIndex) -> &dyn StoreIndex {
+    st as &dyn StoreIndex
+}
+
+fn main() {}