40 lines
673 B
Rust
40 lines
673 B
Rust
// run-pass
|
|
|
|
use std::cell::Cell;
|
|
|
|
#[derive(Debug)]
|
|
struct C<'a> {
|
|
v: Vec<Cell<Option<&'a C<'a>>>>,
|
|
}
|
|
|
|
impl<'a> C<'a> {
|
|
fn new() -> C<'a> {
|
|
C { v: Vec::new() }
|
|
}
|
|
}
|
|
|
|
fn f() {
|
|
let (mut c1, mut c2, mut c3);
|
|
c1 = C::new();
|
|
c2 = C::new();
|
|
c3 = C::new();
|
|
|
|
c1.v.push(Cell::new(None));
|
|
c1.v.push(Cell::new(None));
|
|
c2.v.push(Cell::new(None));
|
|
c2.v.push(Cell::new(None));
|
|
c3.v.push(Cell::new(None));
|
|
c3.v.push(Cell::new(None));
|
|
|
|
c1.v[0].set(Some(&c2));
|
|
c1.v[1].set(Some(&c3));
|
|
c2.v[0].set(Some(&c2));
|
|
c2.v[1].set(Some(&c3));
|
|
c3.v[0].set(Some(&c1));
|
|
c3.v[1].set(Some(&c2));
|
|
}
|
|
|
|
fn main() {
|
|
f();
|
|
}
|