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Edit File: arguments-lazy.js

// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
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//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// Make sure we don't allocate the arguments object over and
// over again.
function SharedLazyArguments() {
  return arguments === arguments;
}

assertTrue(SharedLazyArguments());

// Make sure that accessing arguments doesn't clobber any
// local variables called arguments.
function ArgumentsOverride(x) {
  var arguments = 42;
  x = x ? x : 0;
  return x + arguments;
}

assertEquals(42, ArgumentsOverride());
assertEquals(43, ArgumentsOverride(1));
assertEquals(44, ArgumentsOverride(2,3));

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