regress-create-exception.js revision 44f0eee88ff00398ff7f715fab053374d808c90d 
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"use strict";
30
31// Check for GC bug constructing exceptions.
32var v = [1, 2, 3, 4]
33
34Object.preventExtensions(v);
35
36function foo() {
37  var re = /2147483647/;  // Equal to 0x7fffffff.
38  for  (var i = 0; i < 10000; i++) {
39    var ok = false;
40    try {
41      var j = 1;
42      // Allocate some heap numbers in order to randomize the behaviour of the
43      // garbage collector.  93 is chosen to be a prime number to avoid the
44      // allocation settling into a too neat pattern.
45      for (var j = 0; j < i % 93; j++) {
46        j *= 1.123567;  // An arbitrary floating point number.
47      }
48      v[0x7fffffff] = 0;  // Trigger exception.
49      assertTrue(false);
50      return j;  // Make sure that future optimizations don't eliminate j.
51    } catch(e) {
52      ok = true;
53      assertTrue(re.test(e), 'e: ' + e);
54    }
55    assertTrue(ok);
56  }
57}
58
59foo();
60