// 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 --opt
function foo(a) { for (var d in a) { delete a[1]; } } foo([1,2,3]); foo([2,3,4]); %OptimizeFunctionOnNextCall(foo); foo([1,2,3]); assertOptimized(foo);