// Copyright 2014 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."use strict";varobj={"length":-6,"1":"A","3":"B","5":"C"};obj[Symbol.isConcatSpreadable]=true;assertEquals([],[].concat(obj));obj.length=-6.7;assertEquals([],[].concat(obj));obj.length="-6";assertEquals([],[].concat(obj));