1 files changed, 11 insertions, 0 deletions
diff --git a/tests/ui/traits/alias/object-fail.rs b/tests/ui/traits/alias/object-fail.rs
new file mode 100644
index 00000000000..5c753ff207c
--- /dev/null
+++ b/tests/ui/traits/alias/object-fail.rs
@@ -0,0 +1,11 @@
+#![feature(trait_alias)]
+
+trait EqAlias = Eq;
+trait IteratorAlias = Iterator;
+
+fn main() {
+    let _: &dyn EqAlias = &123;
+    //~^ ERROR the trait `Eq` cannot be made into an object [E0038]
+    let _: &dyn IteratorAlias = &vec![123].into_iter();
+    //~^ ERROR must be specified
+}