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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 expected = undefined;
function foo() {
var a = [0,,{}];
a.shift();
assertEquals(expected, a[0]);
}
foo();
foo();
%OptimizeFunctionOnNextCall(foo);
foo();
expected = 42;
Array.prototype[0] = 153;
Array.prototype[1] = expected;
foo();
function bar() {
var a = [0,,{}];
a.shift();
assertEquals(expected, a[0]);
}
bar();
bar();
%OptimizeFunctionOnNextCall(bar);
bar();
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