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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 - Don't leak the names of [private] functions in JS built-ins"
   href="https://bugs.webkit.org/show_bug.cgi?id=158778">158778</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Don't leak the names of [private] functions in JS built-ins
          </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>Bindings
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>adam.bergkvist&#64;ericsson.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>cdumez&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>If I implement a function add() as a JS built-in based on a private function &#64;privateAdd(), I need to duplicate all type checking done in &#64;privateAdd() to prevent error messages to reveal the &quot;privateAdd&quot; name.

For example: &quot;Argument 1 ('item') to Bar.privateAdd must be an instance of FooItem&quot;

The approach with adding a native JS function to both a 'name' and a '&#64;name' slot,  mentioned in [1], makes this less of an issue.

[1] <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Add bindings generator support to add a native JS function to both a 'name' and a private '&#64;name' slot"
   href="show_bug.cgi?id=158777">https://bugs.webkit.org/show_bug.cgi?id=158777</a></pre>
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