1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/traits/trait-upcasting/issue-11515-upcast-fn_mut-fn.rs b/src/test/ui/traits/trait-upcasting/issue-11515-upcast-fn_mut-fn.rs
new file mode 100644
index 000000000..6d8800254
--- /dev/null
+++ b/src/test/ui/traits/trait-upcasting/issue-11515-upcast-fn_mut-fn.rs
@@ -0,0 +1,13 @@
+// run-pass
+#![feature(trait_upcasting)]
+#![allow(incomplete_features)]
+
+struct Test {
+    func: Box<dyn FnMut() + 'static>,
+}
+
+fn main() {
+    let closure: Box<dyn Fn() + 'static> = Box::new(|| ());
+    let mut test = Box::new(Test { func: closure });
+    (test.func)();
+}