1 files changed, 67 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-16492.rs b/tests/ui/issues/issue-16492.rs
new file mode 100644
index 00000000000..7fa808237bf
--- /dev/null
+++ b/tests/ui/issues/issue-16492.rs
@@ -0,0 +1,67 @@
+// run-pass
+#![allow(non_snake_case)]
+
+use std::rc::Rc;
+use std::cell::Cell;
+
+struct Field {
+    number: usize,
+    state: Rc<Cell<usize>>
+}
+
+impl Field {
+    fn new(number: usize, state: Rc<Cell<usize>>) -> Field {
+        Field {
+            number: number,
+            state: state
+        }
+    }
+}
+
+impl Drop for Field {
+    fn drop(&mut self) {
+        println!("Dropping field {}", self.number);
+        assert_eq!(self.state.get(), self.number);
+        self.state.set(self.state.get()+1);
+    }
+}
+
+struct NoDropImpl {
+    _one: Field,
+    _two: Field,
+    _three: Field
+}
+
+struct HasDropImpl {
+    _one: Field,
+    _two: Field,
+    _three: Field
+}
+
+impl Drop for HasDropImpl {
+    fn drop(&mut self) {
+        println!("HasDropImpl.drop()");
+        assert_eq!(self._one.state.get(), 0);
+        self._one.state.set(1);
+    }
+}
+
+pub fn main() {
+    let state = Rc::new(Cell::new(1));
+    let noImpl = NoDropImpl {
+        _one: Field::new(1, state.clone()),
+        _two: Field::new(2, state.clone()),
+        _three: Field::new(3, state.clone())
+    };
+    drop(noImpl);
+    assert_eq!(state.get(), 4);
+
+    state.set(0);
+    let hasImpl = HasDropImpl {
+        _one: Field::new(1, state.clone()),
+        _two: Field::new(2, state.clone()),
+        _three: Field::new(3, state.clone())
+    };
+    drop(hasImpl);
+    assert_eq!(state.get(), 4);
+}