v8/test/mjsunit/regress/regress-crbug-485410.js

// Copyright 2015 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 doubles = new Float64Array(1);
function ToHeapNumber(i) {
  doubles[0] = i;
  return doubles[0];
};
%PrepareFunctionForOptimization(ToHeapNumber);
for (var i = 0; i < 3; i++) ToHeapNumber(i);
%OptimizeFunctionOnNextCall(ToHeapNumber);
ToHeapNumber(1);

function Fail(a, i, v) {
  a[i] = v;
};
%PrepareFunctionForOptimization(Fail);
for (var i = 0; i < 3; i++) Fail(new Array(1), 1, i);
%OptimizeFunctionOnNextCall(Fail);
// 1050 > JSObject::kMaxGap, causing stub failure and runtime call.
Fail(new Array(1), ToHeapNumber(1050), 3);