1 files changed, 27 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-5666.rs b/src/test/ui/issues/issue-5666.rs
new file mode 100644
index 000000000..aa5132778
--- /dev/null
+++ b/src/test/ui/issues/issue-5666.rs
@@ -0,0 +1,27 @@
+// run-pass
+#![feature(box_syntax)]
+
+struct Dog {
+    name : String
+}
+
+trait Barks {
+    fn bark(&self) -> String;
+}
+
+impl Barks for Dog {
+    fn bark(&self) -> String {
+        return format!("woof! (I'm {})", self.name);
+    }
+}
+
+
+pub fn main() {
+    let snoopy = box Dog{name: "snoopy".to_string()};
+    let bubbles = box Dog{name: "bubbles".to_string()};
+    let barker = [snoopy as Box<dyn Barks>, bubbles as Box<dyn Barks>];
+
+    for pup in &barker {
+        println!("{}", pup.bark());
+    }
+}