1 files changed, 12 insertions, 0 deletions
diff --git a/tests/ui/traits/reservation-impl/no-use.rs b/tests/ui/traits/reservation-impl/no-use.rs
new file mode 100644
index 00000000000..65a55d9e209
--- /dev/null
+++ b/tests/ui/traits/reservation-impl/no-use.rs
@@ -0,0 +1,12 @@
+// check that reservation impls can't be used as normal impls in positive reasoning.
+
+#![feature(rustc_attrs)]
+
+trait MyTrait { fn foo(&self); }
+#[rustc_reservation_impl = "foo"]
+impl MyTrait for () { fn foo(&self) {} }
+
+fn main() {
+    <() as MyTrait>::foo(&());
+    //~^ ERROR the trait bound `(): MyTrait` is not satisfied
+}