Forbid borrow of static items with unsafe interior

src/test/compile-fail/borrowck-forbid-static-unsafe-interior.rs

@@ -0,0 +1,47 @@
+// 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.
+
+// Verify that it is not possible to take the address of
+// static items with usnafe interior.
+
+use std::kinds::marker;
+use std::ty::Unsafe;
+
+struct MyUnsafe<T> {
+    value: Unsafe<T>
+}
+
+impl<T> MyUnsafe<T> {
+    fn forbidden(&self) {}
+}
+
+enum UnsafeEnum<T> {
+    VariantSafe,
+    VariantUnsafe(Unsafe<T>)
+}
+
+static STATIC1: UnsafeEnum<int> = VariantSafe;
+
+static STATIC2: Unsafe<int> = Unsafe{value: 1, marker1: marker::InvariantType};
+static STATIC3: MyUnsafe<int> = MyUnsafe{value: STATIC2};
+
+static STATIC4: &'static Unsafe<int> = &'static STATIC2;
+//~^ ERROR borrow of immutable static items with unsafe interior is not allowed
+
+
+fn main() {
+    let a = &STATIC1;
+    //~^ ERROR borrow of immutable static items with unsafe interior is not allowed
+
+    STATIC3.forbidden()
+    //~^ ERROR borrow of immutable static items with unsafe interior is not allowed
+}
+
+