<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61143>61143</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang 16_rc3 error: unknown argument: '-fallow-half-arguments-and-returns'
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          littlewu2508
      </td>
    </tr>
</table>

<pre>
    Compiling a empty program foo.c `int main() {}`:

`clang-15 -Xclang -fallow-half-arguments-and-returns foo.c`

No issue.

`clang-16 -Xclang -fallow-half-arguments-and-returns foo.c`
with error: `error: unknown argument: '-fallow-half-arguments-and-returns'`

Result is observed on debian and Gentoo using llvm/clang packages.
</pre>
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