Add test for issue #9446.

src/test/run-pass/issue-9446.rs

@@ -0,0 +1,40 @@
+// Copyright 2013 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.
+
+// xfail-test
+
+struct Wrapper(~str);
+
+impl Wrapper {
+    pub fn new(wrapped: ~str) -> Wrapper {
+        Wrapper(wrapped)
+    }
+
+    pub fn say_hi(&self) {
+        println(fmt!("hello %s", **self));
+    }
+}
+
+impl Drop for Wrapper {
+    fn drop(&mut self) {}
+}
+
+fn main() {
+    {
+        // This runs without complaint.
+        let x = Wrapper::new(~"Bob");
+        x.say_hi();
+    }
+    {
+        // This fails to compile, circa 0.8-89-gc635fba.
+        // error: internal compiler error: drop_ty_immediate: non-box ty
+        Wrapper::new(~"Bob").say_hi();
+    }
+}