regress-1118.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: --allow-natives-syntax
29
30// An exception thrown in a function optimized by on-stack replacement (OSR)
31// should be able to construct a receiver from all optimized stack frames.
32
33function A() { }
34A.prototype.f = function() { }
35
36function B() { }
37
38var o = new A();
39
40// This function throws if o does not have an f property, and should not be
41// inlined.
42function g() { try { return o.f(); } finally { }}
43
44// Optimization status (see runtime.cc):
45// 1 - yes, 2 - no, 3 - always, 4 - never.
46
47// This function should be optimized via OSR.
48function h() {
49  var optstatus = %GetOptimizationStatus(h);
50  if (optstatus == 4) {
51    // Optimizations are globally disabled; just run once.
52    g();
53  } else {
54    // Run for a bit as long as h is unoptimized.
55    while (%GetOptimizationStatus(h) == 2) {
56      for (var j = 0; j < 100; j++) g();
57    }
58    g();
59  }
60}
61
62h();
63o = new B();
64assertThrows("h()");
65