src/test/compile-fail/safe-extern-statics.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // aux-build:extern-statics.rs
  12
  13 #![allow(unused)]
  14 #![deny(safe_extern_statics)]
  15
  16 extern crate extern_statics;
  17 use extern_statics::*;
  18
  19 extern {
  20     static A: u8;
  21 }
  22
  23 fn main() {
  24     let a = A; //~ ERROR use of extern static requires unsafe function or block
  25                //~^ WARN this was previously accepted by the compiler
  26     let ra = &A; //~ ERROR use of extern static requires unsafe function or block
  27                  //~^ WARN this was previously accepted by the compiler
  28     let xa = XA; //~ ERROR use of extern static requires unsafe function or block
  29                  //~^ WARN this was previously accepted by the compiler
  30     let xra = &XA; //~ ERROR use of extern static requires unsafe function or block
  31                    //~^ WARN this was previously accepted by the compiler
  32 }