58 lines
2.5 KiB
JavaScript
58 lines
2.5 KiB
JavaScript
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// Copyright 2013 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: --allow-natives-syntax
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// The type feedback oracle had a bug when retrieving the map from an IC
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// starting with a negative lookup.
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// Create a holder in fast mode.
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var holder = Object.create(null, {
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holderMethod: {value: function() {}}
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});
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assertTrue(%HasFastProperties(holder));
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// Create a receiver into dictionary mode.
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var receiver = Object.create(holder, {
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killMe: {value: 0, configurable: true},
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});
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delete receiver.killMe;
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assertFalse(%HasFastProperties(receiver));
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// The actual function to test, triggering the retrieval of the wrong map.
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function callConstantFunctionOnPrototype(obj) {
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obj.holderMethod();
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}
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callConstantFunctionOnPrototype(receiver);
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callConstantFunctionOnPrototype(receiver);
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%OptimizeFunctionOnNextCall(callConstantFunctionOnPrototype);
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callConstantFunctionOnPrototype(receiver);
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// Make sure that the function is still optimized.
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assertTrue(2 != %GetOptimizationStatus(callConstantFunctionOnPrototype));
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