Loosened rules involving statics mentioning other statics.

Updated tests accordingly.

src/test/compile-fail/issue-16538.rs

@@ -22,7 +22,6 @@ mod Y {
 
 static foo: *const Y::X = Y::foo(Y::x as *const Y::X);
 //~^ ERROR `*const usize` cannot be shared between threads safely [E0277]
-//~| ERROR cannot refer to other statics by value, use the address-of operator or a constant instead
 //~| ERROR E0015
 
 fn main() {}

src/test/run-pass/issue-17718-borrow-interior.rs

@@ -9,17 +9,13 @@
 // except according to those terms.
 
 struct S { a: usize }
+
 static A: S  = S { a: 3 };
 static B: &'static usize = &A.a;
-//~^ ERROR: cannot refer to the interior of another static
 static C: &'static usize = &(A.a);
-//~^ ERROR: cannot refer to the interior of another static
 
 static D: [usize; 1] = [1];
 static E: usize = D[0];
-//~^ ERROR: cannot refer to the interior of another static
-//~^^ ERROR: cannot refer to other statics by value
 static F: &'static usize = &D[0];
-//~^ ERROR: cannot refer to the interior of another static
 
 fn main() {}

src/test/ui/error-codes/E0394.rs

@@ -1,18 +0,0 @@
-// Copyright 2016 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.
-
-#![allow(warnings)]
-
-static A: u32 = 0;
-static B: u32 = A;
-//~^ ERROR E0394
-
-fn main() {
-}

src/test/ui/error-codes/E0394.stderr

@@ -1,11 +0,0 @@
-error[E0394]: cannot refer to other statics by value, use the address-of operator or a constant instead
-  --> $DIR/E0394.rs:14:17
-   |
-LL | static B: u32 = A;
-   |                 ^ referring to another static by value
-   |
-   = note: use the address-of operator or a constant instead
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0394`.

src/test/ui/error-codes/E0494.rs

@@ -1,19 +0,0 @@
-// Copyright 2016 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.
-
-struct Foo {
-    a: u32
-}
-
-static S : Foo = Foo { a : 0 };
-static A : &'static u32 = &S.a; //~ ERROR E0494
-
-fn main() {
-}

src/test/ui/error-codes/E0494.stderr

@@ -1,9 +0,0 @@
-error[E0494]: cannot refer to the interior of another static, use a constant instead
-  --> $DIR/E0494.rs:16:27
-   |
-LL | static A : &'static u32 = &S.a; //~ ERROR E0494
-   |                           ^^^^
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0494`.