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1 // Copyright 2014 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-debug-as debug --allow-natives-syntax | |
29 | |
30 Debug = debug.Debug; | |
31 | |
32 function dummy(x) { | |
33 return x + 100; | |
34 } | |
35 | |
36 function create_closure() { | |
37 var f = function(arg) { | |
38 if (arg) { %DeoptimizeFunction(f); } | |
39 var a = Array(10); | |
40 for (var i = 0; i < a.length; i++) { | |
41 a[i] = i; | |
42 } | |
43 } | |
44 return f; | |
45 } | |
46 | |
47 var c = create_closure(); | |
48 c(); | |
49 | |
50 // c CallIC state now has custom Array handler installed. | |
51 | |
52 // Turn on the debugger. | |
53 Debug.setListener(function () {}); | |
54 | |
55 var d = create_closure(); | |
56 %OptimizeFunctionOnNextCall(d); | |
57 // Thanks to the debugger, we recreate the full code too. We deopt and run | |
58 // it, stomping on the unexpected AllocationSite in the type vector slot. | |
59 d(true); | |
60 | |
61 // CallIC in c misinterprets type vector slot contents as an AllocationSite, | |
62 // corrupting the heap. | |
63 c(); | |
64 | |
65 // CallIC MISS - crash due to corruption. | |
66 dummy(); | |
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