1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/mir/thir-constparam-temp.rs b/src/test/ui/mir/thir-constparam-temp.rs
new file mode 100644
index 000000000..cdc5910b3
--- /dev/null
+++ b/src/test/ui/mir/thir-constparam-temp.rs
@@ -0,0 +1,20 @@
+// build-pass
+
+#![feature(adt_const_params)]
+#![allow(incomplete_features)]
+
+#[derive(PartialEq, Eq)]
+struct Yikes;
+
+impl Yikes {
+    fn mut_self(&mut self) {}
+}
+
+fn foo<const YIKES: Yikes>() {
+    YIKES.mut_self()
+    //~^ WARNING taking a mutable reference
+}
+
+fn main() {
+    foo::<{ Yikes }>()
+}