text: var arr = [StopIteration, StopIteration, StopIteration, StopIteration, {}];
  var obj = {};
  var x;
  var result = 'no error';
  try {
      for (var i = 0; i < arr.length; i++)
          x = (obj instanceof arr[i]);  // last iteration throws, triggering deep bail
  } catch (exc) {
      result = exc.constructor.name;
  }
  assertEq(result, 'TypeError');
  
  