<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/137099>137099</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Why clang19 support explicit this parameter but doesn't define `__cpp_explicit_this_parameter` macro?
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          illusory0x0
      </td>
    </tr>
</table>

<pre>
    [godbolt code snippet](https://godbolt.org/z/E1ozsc3cf)
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJxckE-PnDwMhz-NuUQ7CiYZ4JDD-2rLV-gR5Y-BVIFESdju7KevGE1bqScffn5sP9al-PUgUiD_B_ne6LNuMSsfwllifvBP3pjoHle8RmdiqMxGR6wcPiWqIN8Bh63WVKD7D3ACnF59t5hXwOkLcPrWxq9iO7sAjo1TnRu7UTek2l5IIWXPh2ZThgtrlrZ3Xa8X2bdSL8i5Q4FII95N4xVylFyg4FwMONzGu9ZCtmZA2w6m7UFw2rUPtxA-9mt940s5SbVdz8exCdpQKE9RxIN-smcKiJd3Vhf0Zs61gODBl1r-jqm-BlLftwezQR9rO7JyphRzZfSZgre-srr5wpLOeqdKmZmzMhepHIB9ZY4WfxCDO59nm9L8m5ovav5DwZ2zXdscoZuaMwf1z1993U5zs3EHnK7bXuUt5fiDbAWcnkYFcHopfyj8FQAA__8utJtP">