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