regress-88858.js revision 3fb3ca8c7ca439d408449a395897395c0faae8d1 
1// Copyright 2011 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: --expose-gc
29
30// Verify that JSObject::PreventExtensions works for arguments objects.
31
32try {
33    function make_watcher(name) { }
34    var o, p;
35    function f(flag) {
36        if (flag) {
37            o = arguments;
38        } else {
39            p = arguments;
40            o.watch(0, (arguments-1901)('o'));
41            p.watch(0, make_watcher('p'));
42            p.unwatch(0);
43            o.unwatch(0);
44            p[0] = 4;
45            assertEq(flag, 4);
46        }
47    }
48    f(true);
49    f(false);
50    reportCompare(true, true);
51} catch(exc1) { }
52
53try {
54    function __noSuchMethod__() {
55       if (anonymous == "1")
56           return NaN;
57       return __construct__;
58    }
59    f.p = function() { };
60    Object.freeze(p);
61    new new freeze().p;
62    reportCompare(0, 0, "ok");
63} catch(exc2) { }
64
65gc();
66