blob: c1311af81fbfda8683c54ed83e2fe73ed8e3f330 [file] [log] [blame]
// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
(function modifyArrayIterator() {
'use strict';
class Point {
constructor(x, y) {
this.x = x;
this.y = y;
}
}
class RestPoint extends Point {
constructor(...args) {
super(...args);
}
}
function testRestPoint(x, y) {
return new RestPoint(x, y);
}
testRestPoint(1, 2);
testRestPoint(1, 2);
%OptimizeFunctionOnNextCall(testRestPoint);
var r = testRestPoint(1, 2);
assertInstanceof(r, RestPoint);
assertInstanceof(r, Point);
assertEquals(1, r.x);
assertEquals(2, r.y);
Object.defineProperty(Array.prototype, Symbol.iterator, {
value: function*
() {
yield 3;
yield 4;
},
configurable: true
});
var r2 = testRestPoint(1, 2);
assertInstanceof(r2, RestPoint);
assertInstanceof(r2, Point);
assertEquals(3, r2.x);
assertEquals(4, r2.y);
})();