1 files changed, 60 insertions, 0 deletions
diff --git a/src/test/ui/structs-enums/class-cast-to-trait.rs b/src/test/ui/structs-enums/class-cast-to-trait.rs
new file mode 100644
index 000000000..1019bb300
--- /dev/null
+++ b/src/test/ui/structs-enums/class-cast-to-trait.rs
@@ -0,0 +1,60 @@
+// run-pass
+#![allow(dead_code)]
+#![allow(unused_mut)]
+#![allow(non_camel_case_types)]
+
+// ignore-freebsd FIXME fails on BSD
+
+
+trait noisy {
+  fn speak(&mut self);
+}
+
+struct cat {
+  meows: usize,
+  how_hungry: isize,
+  name: String,
+}
+
+impl noisy for cat {
+  fn speak(&mut self) { self.meow(); }
+}
+
+impl cat {
+  pub fn eat(&mut self) -> bool {
+    if self.how_hungry > 0 {
+        println!("OM NOM NOM");
+        self.how_hungry -= 2;
+        return true;
+    }
+    else {
+        println!("Not hungry!");
+        return false;
+    }
+  }
+}
+
+impl cat {
+    fn meow(&mut self) {
+      println!("Meow");
+      self.meows += 1;
+      if self.meows % 5 == 0 {
+          self.how_hungry += 1;
+      }
+    }
+}
+
+fn cat(in_x : usize, in_y : isize, in_name: String) -> cat {
+    cat {
+        meows: in_x,
+        how_hungry: in_y,
+        name: in_name
+    }
+}
+
+
+pub fn main() {
+    let mut nyan = cat(0, 2, "nyan".to_string());
+    let mut nyan: &mut dyn noisy = &mut nyan;
+    nyan.speak();
+}