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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Numeric properties of an object will not use accessors defined on the object's prototype"
   href="https://bugs.webkit.org/show_bug.cgi?id=151812">151812</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Numeric properties of an object will not use accessors defined on the object's prototype
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>JavaScriptCore
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>dfreedm&#64;google.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Reproduction:

var proto = Object.create(null);
Object.defineProperty(proto, '0', {
  get: function(){console.log('get')},
  set: function(){console.log('set')}
});
var o = Object.create(proto);
o[0] = 3;
o[0] === undefined

Expected:
Console prints 'set', 'get', and 'true', as o[0] === undefined.

Actual:
Console prints 'false', as o[0] === 3


Chrome, Firefox, and IE/Edge will show the expected behavior.</pre>
        </div>
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