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 static mut debug_static_mut: libc::c_int;
20 pub fn debug_static_mut_check_four();
23 unsafe fn static_bound(_: &'static libc::c_int) {}
25 fn static_bound_set(a: &'static mut libc::c_int) {
30 assert!(debug_static_mut == 3);
32 assert!(debug_static_mut == 4);
33 debug_static_mut_check_four();
34 debug_static_mut += 1;
35 assert!(debug_static_mut == 5);
36 debug_static_mut *= 3;
37 assert!(debug_static_mut == 15);
38 debug_static_mut = -3;
39 assert!(debug_static_mut == -3);
40 static_bound(&debug_static_mut);
41 static_bound_set(&mut debug_static_mut);