1 files changed, 15 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/explicit_auto_deref.rs b/src/tools/clippy/tests/ui/explicit_auto_deref.rs
index deedafad1..c1894258f 100644
--- a/src/tools/clippy/tests/ui/explicit_auto_deref.rs
+++ b/src/tools/clippy/tests/ui/explicit_auto_deref.rs
@@ -266,4 +266,19 @@ fn main() {
         }
         *x
     };
+
+    trait WithAssoc {
+        type Assoc: ?Sized;
+    }
+    impl WithAssoc for String {
+        type Assoc = str;
+    }
+    fn takes_assoc<T: WithAssoc>(_: &T::Assoc) -> T {
+        unimplemented!()
+    }
+    let _: String = takes_assoc(&*String::new());
+
+    // Issue #9901
+    fn takes_ref(_: &i32) {}
+    takes_ref(*Box::new(&0i32));
 }