Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | // Flags: --expose-debug-as debug --allow-natives-syntax |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 29 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | Debug = debug.Debug; |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 31 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 32 | function dummy(x) { |
| 33 | return x + 100; |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 34 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 45 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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(); |