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 30Debug = debug.Debug; 31 32function dummy(x) { 33 return x + 100; 34} 35 36function 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 47var c = create_closure(); 48c(); 49 50// c CallIC state now has custom Array handler installed. 51 52// Turn on the debugger. 53Debug.setListener(function () {}); 54 55var 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. 59d(true); 60 61// CallIC in c misinterprets type vector slot contents as an AllocationSite, 62// corrupting the heap. 63c(); 64 65// CallIC MISS - crash due to corruption. 66dummy(); 67