<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/85117>85117</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Backport stdarg/stddef -fbuiltin-headers-in-system-modules fix
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          ian-twilightcoder
      </td>
    </tr>
</table>

<pre>
    We should backport https://github.com/llvm/llvm-project/pull/84127 to LLVM 18 because it's a regressions from LLVM 17.

/cherry-pick f50d3582b4844b86ad86372028e44b52c560ec7d
</pre>
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