<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/62858>62858</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang] Clang accepts deleted constructer for no_unique_address field.
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            c++20,
            accepts-invalid
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          usx95
      </td>
    </tr>
</table>

<pre>
    GCC test: `g++.dg/cpp2a/no_unique_address7.C`
```
struct A { A(const A&) = delete; };
A f();
struct C
{
  [[no_unique_address]] A a;
};
C c{f()};
```
Clang accepts while GCC rejects this.
https://godbolt.org/z/6rc8MoKPY

I am not completely sure whether we should reject this code or this is a bug in gcc.

</pre>
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