| use std::ptr::addr_of; | |
| static mut FOO: i32 = 42; | |
| static BAR: Foo = Foo(unsafe { addr_of!(FOO) }); | |
| #[allow(dead_code)] | |
| struct Foo(*const i32); | |
| unsafe impl Sync for Foo {} | |
| fn main() { | |
| unsafe { | |
| assert_eq!(*BAR.0, 42); | |
| FOO = 5; | |
| assert_eq!(FOO, 5); | |
| assert_eq!(*BAR.0, 5); | |
| } | |
| } |