1// Copyright 2013 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 --expose-gc
29// Flags: --noalways-opt
30
31function isHoley(obj) {
32  if (%HasFastHoleyElements(obj)) return true;
33  return false;
34}
35
36function assertHoley(obj, name_opt) {
37  assertEquals(true, isHoley(obj), name_opt);
38}
39
40function assertNotHoley(obj, name_opt) {
41  assertEquals(false, isHoley(obj), name_opt);
42}
43
44function create_array(arg) {
45  return new Array(arg);
46}
47
48obj = create_array(0);
49assertNotHoley(obj);
50create_array(0);
51%OptimizeFunctionOnNextCall(create_array);
52obj = create_array(10);
53assertHoley(obj);
54
55// The code below would assert in debug or crash in release
56function f(length) {
57  return new Array(length)
58}
59
60f(0);
61f(0);
62%OptimizeFunctionOnNextCall(f);
63var a = f(10);
64
65function g(a) {
66  return a[0];
67}
68
69var b = [0];
70g(b);
71g(b);
72assertEquals(undefined, g(a));
73