1// Copyright 2012 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Flags: --allow-natives-syntax 29 30// Should not take a very long time (n^2 algorithms are bad) 31 32function do_slices() { 33 var data = new Array(1024 * 12); // 12kB 34 35 for (var i = 0; i < data.length; i++) { 36 data[i] = 255; 37 } 38 39 var start = Date.now(); 40 41 for (i = 0; i < 20000; i++) { 42 data.slice(4, 1); 43 } 44 45 return Date.now() - start; 46} 47 48// Should never take more than 3 seconds (if the bug is fixed, the test takes 49// considerably less time than 3 seconds). 50assertTrue(do_slices() < (3 * 1000)); 51 52// Make sure that packed and unpacked array slices are still properly handled 53var holey_array = [1, 2, 3, 4, 5,,,,,,]; 54assertFalse(%HasFastHoleyElements(holey_array.slice(6, 1))); 55assertEquals(undefined, holey_array.slice(6, 7)[0]) 56assertFalse(%HasFastHoleyElements(holey_array.slice(2, 1))); 57assertEquals(3, holey_array.slice(2, 3)[0]) 58