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
29
30// The type feedback oracle had a bug when retrieving the map from an IC
31// starting with a negative lookup.
32
33// Create a holder in fast mode.
34var holder = Object.create(null, {
35  holderMethod: {value: function() {}}
36});
37assertTrue(%HasFastProperties(holder));
38
39// Create a receiver into dictionary mode.
40var receiver = Object.create(holder, {
41  killMe: {value: 0, configurable: true},
42});
43delete receiver.killMe;
44assertFalse(%HasFastProperties(receiver));
45
46// The actual function to test, triggering the retrieval of the wrong map.
47function callConstantFunctionOnPrototype(obj) {
48  obj.holderMethod();
49}
50
51callConstantFunctionOnPrototype(receiver);
52callConstantFunctionOnPrototype(receiver);
53%OptimizeFunctionOnNextCall(callConstantFunctionOnPrototype);
54callConstantFunctionOnPrototype(receiver);
55
56// Make sure that the function is still optimized.
57assertOptimized(callConstantFunctionOnPrototype);
58