1 files changed, 7 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/unused_unit.rs b/src/tools/clippy/tests/ui/unused_unit.rs
index 21073fb80..bddecf06f 100644
--- a/src/tools/clippy/tests/ui/unused_unit.rs
+++ b/src/tools/clippy/tests/ui/unused_unit.rs
@@ -7,6 +7,7 @@
 // test of the JSON error format.
 
 #![feature(custom_inner_attributes)]
+#![feature(closure_lifetime_binder)]
 #![rustfmt::skip]
 
 #![deny(clippy::unused_unit)]
@@ -87,3 +88,9 @@ fn macro_expr() {
     }
     e!()
 }
+
+mod issue9748 {
+    fn main() {
+        let _ = for<'a> |_: &'a u32| -> () {};
+    }
+}