Add test for #16465

Closes #16465

Author: Sawyer47

src/test/compile-fail/issue-16465.rs

@@ -0,0 +1,24 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Used to cause an ICE
+
+struct Foo<T>{
+    x : T
+}
+
+type FooInt = Foo<int>;
+
+impl Drop for FooInt {
+//~^ ERROR cannot implement a destructor on a structure with type parameters 
+    fn drop(&mut self){}
+}
+
+fn main() {}