Add regression test for issue #17441

Author: bkoropoff

src/test/compile-fail/issue-17441.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.
+
+fn main() {
+    let _foo = &[1u, 2] as [uint];
+    //~^ ERROR cast to unsized type: `&[uint, .. 2]` as `[uint]`
+    //~^^ NOTE consider using an implicit coercion to `&[uint]` instead
+    let _bar = box 1u as std::fmt::Show;
+    //~^ ERROR cast to unsized type: `Box<uint>` as `core::fmt::Show`
+    //~^^ NOTE did you mean `Box<core::fmt::Show>`?
+    let _baz = 1u as std::fmt::Show;
+    //~^ ERROR cast to unsized type: `uint` as `core::fmt::Show`
+    //~^^ NOTE consider using a box or reference as appropriate
+    let _quux = [1u, 2] as [uint];
+    //~^ ERROR cast to unsized type: `[uint, .. 2]` as `[uint]`
+    //~^^ NOTE consider using a box or reference as appropriate
+}