1 files changed, 11 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/issue-98608.rs b/tests/ui/type-alias-impl-trait/issue-98608.rs
new file mode 100644
index 000000000..1f89af045
--- /dev/null
+++ b/tests/ui/type-alias-impl-trait/issue-98608.rs
@@ -0,0 +1,11 @@
+fn hi() -> impl Sized {
+    std::ptr::null::<u8>()
+}
+
+fn main() {
+    let b: Box<dyn Fn() -> Box<u8>> = Box::new(hi);
+    //~^ ERROR expected `fn() -> impl Sized {hi}` to be a fn item that returns `Box<u8>`, but it returns `impl Sized`
+    let boxed = b();
+    let null = *boxed;
+    println!("{null:?}");
+}