1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/traits/non_lifetime_binders/supertrait-object-safety.rs b/tests/ui/traits/non_lifetime_binders/supertrait-object-safety.rs
new file mode 100644
index 000000000..a635edb44
--- /dev/null
+++ b/tests/ui/traits/non_lifetime_binders/supertrait-object-safety.rs
@@ -0,0 +1,24 @@
+#![feature(non_lifetime_binders)]
+//~^ WARN the feature `non_lifetime_binders` is incomplete
+
+trait Foo: for<T> Bar<T> {}
+
+trait Bar<T: ?Sized> {
+    fn method(&self) {}
+}
+
+fn needs_bar(x: &(impl Bar<i32> + ?Sized)) {
+    x.method();
+}
+
+impl Foo for () {}
+
+impl<T: ?Sized> Bar<T> for () {}
+
+fn main() {
+    let x: &dyn Foo = &();
+    //~^ ERROR the trait `Foo` cannot be made into an object
+    //~| ERROR the trait `Foo` cannot be made into an object
+    needs_bar(x);
+    //~^ ERROR the trait `Foo` cannot be made into an object
+}