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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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