Add test for issue rust-lang#4448

src/test/run-pass/issue-4448.rs

@@ -0,0 +1,19 @@
+// Copyright 2012 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.
+
+fn main() {
+    let (port, chan) = comm::stream::<&static/str>();
+
+    do task::spawn {
+        assert port.recv() == "hello, world";
+    }
+
+    chan.send("hello, world");
+}