1 files changed, 7 insertions, 0 deletions
diff --git a/tests/ui/traits/wf-object/only-maybe-bound.rs b/tests/ui/traits/wf-object/only-maybe-bound.rs
new file mode 100644
index 000000000..3e6db3e99
--- /dev/null
+++ b/tests/ui/traits/wf-object/only-maybe-bound.rs
@@ -0,0 +1,7 @@
+// Test that `dyn ?Sized` (i.e., a trait object with only a maybe buond) is not allowed.
+
+type _0 = dyn ?Sized;
+//~^ ERROR at least one trait is required for an object type [E0224]
+//~| ERROR ?Trait` is not permitted in trait object types
+
+fn main() {}