// Copyright 2018 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 // Collect the actual properties looked up on the Proxy. const actual = []; // Perform a relational comparison with a Proxy on the right hand // side and a Symbol which cannot be turned into a Number on the // left hand side. function foo() { actual.length = 0; const lhs = Symbol(); const rhs = new Proxy({}, { get: function(target, property, receiver) { actual.push(property); return undefined; } }); return lhs < rhs; }; %PrepareFunctionForOptimization(foo); assertThrows(foo, TypeError); assertEquals([Symbol.toPrimitive, 'valueOf', 'toString'], actual); assertThrows(foo, TypeError); assertEquals([Symbol.toPrimitive, 'valueOf', 'toString'], actual); %OptimizeFunctionOnNextCall(foo); assertThrows(foo, TypeError); assertEquals([Symbol.toPrimitive, 'valueOf', 'toString'], actual);