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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Array destructuring seems to not follow the ES6 spec"
   href="https://bugs.webkit.org/show_bug.cgi?id=146339">146339</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Array destructuring seems to not follow the ES6 spec
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>528+ (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>bzbarsky&#64;mit.edu
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Consider this testcase:

  var y = &quot;FAIL&quot;;
  Object.defineProperty(Array.prototype, 0, { get: function() { y = &quot;PASS&quot;; } });
  var [,x] = [,1];
  alert(y);

per spec, this should alert &quot;PASS&quot;.  In Safari (and in a WebKit nightly), this alerts &quot;FAIL&quot;.</pre>
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