<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/144762>144762</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libc++] Re-add implementation detail tests that we removed since the C++03 headers were forked.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            libc++
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
            philnik777
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          ldionne
      </td>
    </tr>
</table>

<pre>
    > LGTM, but please also make a pass to get all of the implementation-detail tests that were removed since the headers were frozen, and re-add those.

>From https://github.com/llvm/llvm-project/pull/144093
</pre>
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