1// Copyright JS Foundation and other contributors, http://js.foundation 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15var array = [1, 2, 3]; 16var idx_50 = array.lastIndexOf(50, { 17 valueOf: function() { 18 // Trigger removing elements from fast array. 19 array.length = 0; 20 } 21}) 22 23assert (idx_50 === -1); 24 25var idx_51 = array.lastIndexOf(51, { 26 valueOf: function() { 27 array.push(51) 28 return 10; 29 } 30}) 31 32assert (idx_51 === -1); 33