| // run-pass |
| // Constants (static variables) can be used to match in patterns, but mutable |
| // statics cannot. This ensures that there's some form of error if this is |
| // attempted. |
| |
| // ignore-wasm32-bare no libc to test ffi with |
| |
| #![feature(rustc_private)] |
| |
| extern crate libc; |
| |
| #[link(name = "rust_test_helpers", kind = "static")] |
| extern { |
| static mut rust_dbg_static_mut: libc::c_int; |
| pub fn rust_dbg_static_mut_check_four(); |
| } |
| |
| unsafe fn static_bound(_: &'static libc::c_int) {} |
| |
| fn static_bound_set(a: &'static mut libc::c_int) { |
| *a = 3; |
| } |
| |
| unsafe fn run() { |
| assert_eq!(rust_dbg_static_mut, 3); |
| rust_dbg_static_mut = 4; |
| assert_eq!(rust_dbg_static_mut, 4); |
| rust_dbg_static_mut_check_four(); |
| rust_dbg_static_mut += 1; |
| assert_eq!(rust_dbg_static_mut, 5); |
| rust_dbg_static_mut *= 3; |
| assert_eq!(rust_dbg_static_mut, 15); |
| rust_dbg_static_mut = -3; |
| assert_eq!(rust_dbg_static_mut, -3); |
| static_bound(&rust_dbg_static_mut); |
| static_bound_set(&mut rust_dbg_static_mut); |
| } |
| |
| pub fn main() { |
| unsafe { run() } |
| } |