<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Issue</th>
<td>
<a href=https://github.com/llvm/llvm-project/issues/103829>103829</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>
LWG3140: `COMMON_REF` is unimplementable as specified
</td>
</tr>
<tr>
<th>Labels</th>
<td>
libc++,
c++20,
lwg-issue
</td>
</tr>
<tr>
<th>Assignees</th>
<td>
</td>
</tr>
<tr>
<th>Reporter</th>
<td>
ldionne
</td>
</tr>
</table>
<pre>
**Link:** https://wg21.link/LWG3140
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJxUkM9q3jAQxJ9mdTGfkVaWYh10-JLUvSQN9NJjkey1rVb-gyUn9O2LXdNSEIgZlpn9rUspDDORBfUI6pm5PY_LZmMXlnkm5pfulwW8A95fwvwT5P2PKMac13TKBrD5GFCU8RjA5uXbZykqzjorOyONY2TFA0otNSrDRquFd4JELdB5rXunjK573SnCmjRXyIJFjhWvRSWE4sqUvua9VAIfRKtMbwRUnCYXYhnj-1Qu28BCSjtZwWWNhkXnKaYTCDEG3wI-ng8BnwDx0sj_OvFjuJ0Rh6Oe2WaP5JvfhwQVjyHl9K8rhxzJXpQg7wVo_vT2-vr25fvXTw1oXhQhFfscpjXSRHN2PlLhUpFWakMfqGP7Fu3_BxxCHndftssE2BxV13dbt-UHtRmwORdMgM2F-W7xdwAAAP__IoiDcg">