class Foo {
  a: f64;
}

fun test() -> f64 {
  let b = new Foo { a : 1000 };

  let result = 0;
  if b is c:Foo and c.a == 1000 {
    result = result + 1;
  }
  if b is c:Foo and c.a == 24 {
    result = result + 10;
  }
  if b is c:Foo {
    result = result + c.a; // c should still be in scope!
  }
  result
}

// @no-errors
// @eval: Float(1001.0)