regress-create-exception.js revision f87a203d89e1bbb6708282e0b64dbd13d59b723d 
1// Copyright 2010 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: --max-new-space-size=256
29
30// Check for GC bug constructing exceptions.
31var v = [1, 2, 3, 4]
32
33Object.preventExtensions(v);
34
35function foo() {
36  var re = /2147483647/;  // Equal to 0x7fffffff.
37  for  (var i = 0; i < 10000; i++) {
38    var ok = false;
39    try {
40      var j = 1;
41      // Allocate some heap numbers in order to randomize the behaviour of the
42      // garbage collector.  93 is chosen to be a prime number to avoid the
43      // allocation settling into a too neat pattern.
44      for (var j = 0; j < i % 93; j++) {
45        j *= 1.123567;  // An arbitrary floating point number.
46      }
47      v[0x7fffffff] = 0;  // Trigger exception.
48      assertTrue(false);
49      return j;  // Make sure that future optimizations don't eliminate j.
50    } catch(e) {
51      ok = true;
52      assertTrue(re.test(e));
53    }
54    assertTrue(ok);
55  }
56}
57
58foo();
59