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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. | |
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 | // 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 | |
13 | // attempted. | |
14 | ||
c34b1796 AL |
15 | |
16 | #![feature(libc)] | |
17 | ||
1a4d82fc | 18 | extern crate libc; |
970d7e83 | 19 | |
1a4d82fc | 20 | #[link(name = "rust_test_helpers")] |
970d7e83 | 21 | extern { |
1a4d82fc JJ |
22 | static mut rust_dbg_static_mut: libc::c_int; |
23 | pub fn rust_dbg_static_mut_check_four(); | |
970d7e83 LB |
24 | } |
25 | ||
26 | unsafe fn static_bound(_: &'static libc::c_int) {} | |
27 | ||
28 | fn static_bound_set(a: &'static mut libc::c_int) { | |
29 | *a = 3; | |
30 | } | |
31 | ||
32 | unsafe fn run() { | |
1a4d82fc JJ |
33 | assert!(rust_dbg_static_mut == 3); |
34 | rust_dbg_static_mut = 4; | |
35 | assert!(rust_dbg_static_mut == 4); | |
36 | rust_dbg_static_mut_check_four(); | |
37 | rust_dbg_static_mut += 1; | |
38 | assert!(rust_dbg_static_mut == 5); | |
39 | rust_dbg_static_mut *= 3; | |
40 | assert!(rust_dbg_static_mut == 15); | |
41 | rust_dbg_static_mut = -3; | |
42 | assert!(rust_dbg_static_mut == -3); | |
43 | static_bound(&rust_dbg_static_mut); | |
44 | static_bound_set(&mut rust_dbg_static_mut); | |
970d7e83 LB |
45 | } |
46 | ||
47 | pub fn main() { | |
48 | unsafe { run() } | |
49 | } |