1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/ui/drop/drop-struct-as-object.rs b/src/test/ui/drop/drop-struct-as-object.rs
new file mode 100644
index 000000000..377027a4f
--- /dev/null
+++ b/src/test/ui/drop/drop-struct-as-object.rs
@@ -0,0 +1,36 @@
+// run-pass
+#![allow(unused_variables)]
+#![allow(non_upper_case_globals)]
+
+// Test that destructor on a struct runs successfully after the struct
+// is boxed and converted to an object.
+
+static mut value: usize = 0;
+
+struct Cat {
+    name : usize,
+}
+
+trait Dummy {
+    fn get(&self) -> usize;
+}
+
+impl Dummy for Cat {
+    fn get(&self) -> usize { self.name }
+}
+
+impl Drop for Cat {
+    fn drop(&mut self) {
+        unsafe { value = self.name; }
+    }
+}
+
+pub fn main() {
+    {
+        let x = Box::new(Cat {name: 22});
+        let nyan: Box<dyn Dummy> = x as Box<dyn Dummy>;
+    }
+    unsafe {
+        assert_eq!(value, 22);
+    }
+}