rust/tests/ui/statics/static-recursive.rs

// run-pass
static mut S: *const u8 = unsafe { &S as *const *const u8 as *const u8 };

struct StaticDoubleLinked {
    prev: &'static StaticDoubleLinked,
    next: &'static StaticDoubleLinked,
    data: i32,
    head: bool
}

static L1: StaticDoubleLinked = StaticDoubleLinked{prev: &L3, next: &L2, data: 1, head: true};
static L2: StaticDoubleLinked = StaticDoubleLinked{prev: &L1, next: &L3, data: 2, head: false};
static L3: StaticDoubleLinked = StaticDoubleLinked{prev: &L2, next: &L1, data: 3, head: false};


pub fn main() {
    unsafe { assert_eq!(S, *(S as *const *const u8)); }

    let mut test_vec = Vec::new();
    let mut cur = &L1;
    loop {
        test_vec.push(cur.data);
        cur = cur.next;
        if cur.head { break }
    }
    assert_eq!(&test_vec, &[1,2,3]);

    let mut test_vec = Vec::new();
    let mut cur = &L1;
    loop {
        cur = cur.prev;
        test_vec.push(cur.data);
        if cur.head { break }
    }
    assert_eq!(&test_vec, &[3,2,1]);
}