1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/unboxed-closures/issue-53448.rs b/tests/ui/unboxed-closures/issue-53448.rs
new file mode 100644
index 000000000..ea1edf7d4
--- /dev/null
+++ b/tests/ui/unboxed-closures/issue-53448.rs
@@ -0,0 +1,16 @@
+// check-pass
+
+#![feature(unboxed_closures)]
+
+trait Lt<'a> {
+    type T;
+}
+impl<'a> Lt<'a> for () {
+    type T = ();
+}
+
+fn main() {
+    let v: <() as Lt<'_>>::T = ();
+    let f: &mut dyn FnMut<(_,), Output = ()> = &mut |_: <() as Lt<'_>>::T| {};
+    f(v);
+}