1 // Copyright 2013 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.
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.
11 // Constants (static variables) can be used to match in patterns, but mutable
12 // statics cannot. This ensures that there's some form of error if this is
19 #[link(name = "rust_test_helpers")]
21 static mut rust_dbg_static_mut: libc::c_int;
22 pub fn rust_dbg_static_mut_check_four();
25 unsafe fn static_bound(_: &'static libc::c_int) {}
27 fn static_bound_set(a: &'static mut libc::c_int) {
32 assert!(rust_dbg_static_mut == 3);
33 rust_dbg_static_mut = 4;
34 assert!(rust_dbg_static_mut == 4);
35 rust_dbg_static_mut_check_four();
36 rust_dbg_static_mut += 1;
37 assert!(rust_dbg_static_mut == 5);
38 rust_dbg_static_mut *= 3;
39 assert!(rust_dbg_static_mut == 15);
40 rust_dbg_static_mut = -3;
41 assert!(rust_dbg_static_mut == -3);
42 static_bound(&rust_dbg_static_mut);
43 static_bound_set(&mut rust_dbg_static_mut);