procedure Test.0 ():
    let Test.21 : [<rnu><null>, C *self] = TagId(1) ;
    let Test.20 : [<rnu><null>, C *self] = TagId(0) Test.21;
    let Test.19 : [<rnu><null>, C *self] = TagId(0) Test.20;
    let Test.2 : [<rnu><null>, C *self] = TagId(0) Test.19;
    let Test.16 : U8 = 0i64;
    let Test.17 : U8 = GetTagId Test.2;
    let Test.18 : Int1 = lowlevel Eq Test.16 Test.17;
    if Test.18 then
        let Test.12 : [<rnu><null>, C *self] = UnionAtIndex (Id 0) (Index 0) Test.2;
        inc Test.12;
        dec Test.2;
        let Test.13 : U8 = 0i64;
        let Test.14 : U8 = GetTagId Test.12;
        dec Test.12;
        let Test.15 : Int1 = lowlevel Eq Test.13 Test.14;
        if Test.15 then
            let Test.8 : I64 = 1i64;
            ret Test.8;
        else
            let Test.9 : I64 = 0i64;
            ret Test.9;
    else
        dec Test.2;
        let Test.10 : I64 = 0i64;
        ret Test.10;