// MIR for `main` 0 nll

| Free Region Mapping
| '?0 | Global | ['?0, '?1]
| '?1 | Local | ['?1]
|
| Inferred Region Values
| '?0 | U0 | {bb0[0..=22], '?0, '?1}
| '?1 | U0 | {bb0[0..=22], '?1}
| '?2 | U0 | {bb0[10..=11]}
| '?3 | U0 | {bb0[11]}
|
| Inference Constraints
| '?0 live at {bb0[0..=22]}
| '?1 live at {bb0[0..=22]}
| '?2 live at {bb0[10]}
| '?3 live at {bb0[11]}
| '?2: '?3 due to Assignment at Single(bb0[10]) ($DIR/storage_ranges.rs:7:17: 7:25 (#0)
|
| Borrows
| bw0: issued at bb0[10] in '?2
|
fn main() -> () {
    let mut _0: ();
    let _1: i32;
    let _2: ();
    let _4: std::option::Option<i32>;
    let mut _5: i32;
    scope 1 {
        debug a => _1;
        let _3: &std::option::Option<i32>;
        let _6: i32;
        scope 2 {
            debug b => _3;
        }
        scope 3 {
            debug c => _6;
        }
    }

    bb0: {
        StorageLive(_1);
        _1 = const 0_i32;
        FakeRead(ForLet(None), _1);
        StorageLive(_2);
        StorageLive(_3);
        StorageLive(_4);
        StorageLive(_5);
        _5 = copy _1;
        _4 = Option::<i32>::Some(move _5);
        StorageDead(_5);
        _3 = &_4;
        FakeRead(ForLet(None), _3);
        _2 = const ();
        StorageDead(_4);
        StorageDead(_3);
        StorageDead(_2);
        StorageLive(_6);
        _6 = const 1_i32;
        FakeRead(ForLet(None), _6);
        _0 = const ();
        StorageDead(_6);
        StorageDead(_1);
        return;
    }
}