6980c4277c
The CallIC Array custom IC stub read from the type vector, expecting to get an AllocationSite. But there are paths in the system where a type vector can be re-created with default values, even though we currently grant an exception to clearing of vector slots with AllocationSites in them at gc time. BUG=392114 LOG=N R=verwaest@chromium.org Review URL: https://codereview.chromium.org/418023002 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22668 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
67 lines
2.4 KiB
JavaScript
67 lines
2.4 KiB
JavaScript
// Copyright 2014 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --expose-debug-as debug --allow-natives-syntax
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Debug = debug.Debug;
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function dummy(x) {
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return x + 100;
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}
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function create_closure() {
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var f = function(arg) {
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if (arg) { %DeoptimizeFunction(f); }
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var a = Array(10);
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for (var i = 0; i < a.length; i++) {
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a[i] = i;
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}
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}
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return f;
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}
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var c = create_closure();
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c();
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// c CallIC state now has custom Array handler installed.
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// Turn on the debugger.
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Debug.setListener(function () {});
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var d = create_closure();
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%OptimizeFunctionOnNextCall(d);
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// Thanks to the debugger, we recreate the full code too. We deopt and run
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// it, stomping on the unexpected AllocationSite in the type vector slot.
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d(true);
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// CallIC in c misinterprets type vector slot contents as an AllocationSite,
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// corrupting the heap.
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c();
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// CallIC MISS - crash due to corruption.
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dummy();
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