1 files changed, 10 insertions, 0 deletions
diff --git a/tests/ui/dyn-star/check-size-at-cast.rs b/tests/ui/dyn-star/check-size-at-cast.rs
new file mode 100644
index 000000000..1f22f7983
--- /dev/null
+++ b/tests/ui/dyn-star/check-size-at-cast.rs
@@ -0,0 +1,10 @@
+#![feature(dyn_star)]
+#![allow(incomplete_features)]
+
+use std::fmt::Debug;
+
+fn main() {
+    let i = [1, 2, 3, 4] as dyn* Debug;
+    //~^ ERROR `[i32; 4]` needs to be a pointer-sized type
+    dbg!(i);
+}