1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/polymorphization/promoted-function-2.rs b/tests/ui/polymorphization/promoted-function-2.rs
new file mode 100644
index 00000000000..d2d0f336812
--- /dev/null
+++ b/tests/ui/polymorphization/promoted-function-2.rs
@@ -0,0 +1,16 @@
+// build-fail
+// compile-flags:-Zpolymorphize=on
+#![crate_type = "lib"]
+#![feature(generic_const_exprs, rustc_attrs)]
+//~^ WARN the feature `generic_const_exprs` is incomplete
+
+#[rustc_polymorphize_error]
+fn test<T>() {
+    //~^ ERROR item has unused generic parameters
+    let x = [0; 3 + 4];
+}
+
+pub fn caller() {
+    test::<String>();
+    test::<Vec<String>>();
+}