1 files changed, 11 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/issue-98604.rs b/tests/ui/type-alias-impl-trait/issue-98604.rs
new file mode 100644
index 000000000..32c2f9ed5
--- /dev/null
+++ b/tests/ui/type-alias-impl-trait/issue-98604.rs
@@ -0,0 +1,11 @@
+// edition:2018
+
+type AsyncFnPtr = Box<dyn Fn() -> std::pin::Pin<Box<dyn std::future::Future<Output = ()>>>>;
+
+async fn test() {}
+
+#[allow(unused_must_use)]
+fn main() {
+    Box::new(test) as AsyncFnPtr;
+    //~^ ERROR expected `fn() -> impl Future<Output = ()> {test}` to be a fn item that returns `Pin<Box<(dyn Future<Output = ()> + 'static)>>`, but it returns `impl Future<Output = ()>`
+}