JSTests/es6/prototype_of_bound_functions_subclasses.js

function test() {

function correctProtoBound(superclass) {
  class C extends superclass {
    constructor() {
      return Object.create(null);
    }
  }
  var boundF = Function.prototype.bind.call(C, null);
  return Object.getPrototypeOf(boundF) === Object.getPrototypeOf(C);
}
return correctProtoBound(function(){})
  && correctProtoBound(Array)
  && correctProtoBound(null);
      
}

if (!test())
    throw new Error("Test failed");