// Copyright 2021 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flags: --allow-natives-syntax --turbofan --trace-opt --trace-deopt // Flags: --no-stress-flush-code --no-flush-bytecode let privateSymbol = %CreatePrivateSymbol("private"); let privateName = %CreatePrivateNameSymbol("privateName"); function test() { "use strict"; // These computed properties are translated into // JSDefineKeyedOwnPropertyInLiteral ops, // and AccessInfoFactory::ComputePropertyAccessInfo should find a // suitable map transition when optimizing. Even if the implementation details // are ignored, we still want to assert that these properties are installed as // non-enumerable, due to being private symbols. let obj = { [privateSymbol]: "private", [privateName]: "privateName", }; assertPropertiesEqual(Object.getOwnPropertyDescriptor(obj, privateSymbol), { value: "private", writable: true, configurable: true, enumerable: false, }); assertPropertiesEqual(Object.getOwnPropertyDescriptor(obj, privateName), { value: "privateName", writable: true, configurable: true, enumerable: false, }); // They don't leak via Object.keys(), Object.getOwnPropertyNames, or // Object.getOwnPropertySymbols let props = Object.getOwnPropertyNames(obj); assertFalse(props.includes(privateSymbol)); assertFalse(props.includes(privateName)); let symbols = Object.getOwnPropertySymbols(obj); assertFalse(symbols.includes(privateSymbol)); assertFalse(symbols.includes(privateName)); let keys = Object.keys(obj); assertFalse(keys.includes(privateSymbol)); assertFalse(keys.includes(privateName)); return obj; } %PrepareFunctionForOptimization(test); test(); test(); test(); %OptimizeFunctionOnNextCall(test); test(); assertOptimized(test);