// MIR for `main` after built

| User Type Annotations
| 0: user_ty: Canonical { value: Ty(Void), max_universe: U0, variables: [] }, span: $DIR/issue_72181_1.rs:16:12: 16:16, inferred_ty: Void
| 1: user_ty: Canonical { value: Ty(Void), max_universe: U0, variables: [] }, span: $DIR/issue_72181_1.rs:16:12: 16:16, inferred_ty: Void
|
fn main() -> () {
    let mut _0: ();                      // return place in scope 0 at $DIR/issue_72181_1.rs:+0:11: +0:11
    let mut _1: !;                       // in scope 0 at $DIR/issue_72181_1.rs:+0:11: +6:2
    let _2: Void as UserTypeProjection { base: UserType(0), projs: [] }; // in scope 0 at $DIR/issue_72181_1.rs:+1:9: +1:10
    let mut _3: ();                      // in scope 0 at $DIR/issue_72181_1.rs:+2:41: +2:43
    let _4: !;                           // in scope 0 at $DIR/issue_72181_1.rs:+5:5: +5:9
    let mut _5: Void;                    // in scope 0 at $DIR/issue_72181_1.rs:+5:7: +5:8
    scope 1 {
        debug v => _2;                   // in scope 1 at $DIR/issue_72181_1.rs:+1:9: +1:10
    }
    scope 2 {
    }

    bb0: {
        StorageLive(_2);                 // scope 0 at $DIR/issue_72181_1.rs:+1:9: +1:10
        StorageLive(_3);                 // scope 2 at $DIR/issue_72181_1.rs:+2:41: +2:43
        _3 = ();                         // scope 2 at $DIR/issue_72181_1.rs:+2:41: +2:43
        _2 = transmute::<(), Void>(move _3) -> bb4; // scope 2 at $DIR/issue_72181_1.rs:+2:9: +2:44
                                         // mir::Constant
                                         // + span: $DIR/issue_72181_1.rs:17:9: 17:40
                                         // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(()) -> Void {transmute::<(), Void>}, val: Value(<ZST>) }
    }

    bb1: {
        StorageDead(_3);                 // scope 2 at $DIR/issue_72181_1.rs:+2:43: +2:44
        FakeRead(ForLet(None), _2);      // scope 0 at $DIR/issue_72181_1.rs:+1:9: +1:10
        AscribeUserType(_2, o, UserTypeProjection { base: UserType(1), projs: [] }); // scope 0 at $DIR/issue_72181_1.rs:+1:12: +1:16
        StorageLive(_4);                 // scope 1 at $DIR/issue_72181_1.rs:+5:5: +5:9
        StorageLive(_5);                 // scope 1 at $DIR/issue_72181_1.rs:+5:7: +5:8
        _5 = move _2;                    // scope 1 at $DIR/issue_72181_1.rs:+5:7: +5:8
        _4 = f(move _5) -> bb4;          // scope 1 at $DIR/issue_72181_1.rs:+5:5: +5:9
                                         // mir::Constant
                                         // + span: $DIR/issue_72181_1.rs:20:5: 20:6
                                         // + literal: Const { ty: fn(Void) -> ! {f}, val: Value(<ZST>) }
    }

    bb2: {
        StorageDead(_5);                 // scope 1 at $DIR/issue_72181_1.rs:+5:8: +5:9
        StorageDead(_4);                 // scope 1 at $DIR/issue_72181_1.rs:+5:9: +5:10
        StorageDead(_2);                 // scope 0 at $DIR/issue_72181_1.rs:+6:1: +6:2
        unreachable;                     // scope 0 at $DIR/issue_72181_1.rs:+0:11: +6:2
    }

    bb3: {
        return;                          // scope 0 at $DIR/issue_72181_1.rs:+6:2: +6:2
    }

    bb4 (cleanup): {
        resume;                          // scope 0 at $DIR/issue_72181_1.rs:+0:1: +6:2
    }
}