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