Add some tests for local data + borrowed pointers

src/libcore/task/local_data.rs

@@ -215,3 +215,12 @@ fn test_tls_cleanup_on_failure() {
         fail!();
     }
 }
+
+#[test]
+fn test_static_pointer() {
+    unsafe {
+        fn key(_x: @&'static int) { }
+        static VALUE: int = 0;
+        local_data_set(key, @&VALUE);
+    }
+}

src/test/compile-fail/core-tls-store-pointer.rs

@@ -0,0 +1,21 @@
+// 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.
+
+// Testing that we can't store a borrowed pointer it task-local storage
+
+use core::task::local_data::*;
+
+fn key(_x: @&int) { }
+
+fn main() {
+    unsafe {
+        local_data_set(key, @&0); //~ ERROR does not fulfill `'static`
+    }
+}