v8/test/mjsunit/regress/regress-crbug-590989-1.js

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// Copyright 2016 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
var o = {}
var p = {foo: 1.5}
function g(x) { return x.foo === +x.foo; }
assertEquals(false, g(o));
assertEquals(false, g(o));
%OptimizeFunctionOnNextCall(g);
assertEquals(false, g(o)); // Still fine here.
assertEquals(true, g(p));
%OptimizeFunctionOnNextCall(g);
assertEquals(false, g(o)); // Confused by type feedback.