v8/test/mjsunit/regress/regress-5332.js

// 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

(function() {
function foo() {
  var a = new Array(2);
  a[1] = 1.5;
  return a;
};
%PrepareFunctionForOptimization(foo);
assertEquals(undefined, foo()[0]);
assertEquals(undefined, foo()[0]);
%OptimizeFunctionOnNextCall(foo);
assertEquals(undefined, foo()[0]);
})();

(function() {
function foo() {
  var a = Array(2);
  a[1] = 1.5;
  return a;
};
%PrepareFunctionForOptimization(foo);
assertEquals(undefined, foo()[0]);
assertEquals(undefined, foo()[0]);
%OptimizeFunctionOnNextCall(foo);
assertEquals(undefined, foo()[0]);
})();