<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/121004>121004</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            -Wglobal-constructors is silenced for derived classes with a virtual base destructor in c++2b mode
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          apache-hb
      </td>
    </tr>
</table>

<pre>
    When a class that contains a non trivial member inherits from a pure virtual base class that has an explicitly declared virtual destructor in c++2b mode -Wglobal-constructors is not raised, but an entry is still added to the .init_array to initialize the objects vtable before main. This behaviour is not present in c++20 mode. The entry is only added at -O0, at -O2 and higher `__cxx_global_var_init` is elided and the vtable is placed directly in the data section which makes this very hard to track down.

Godbolt reproducer link: https://godbolt.org/z/W355314dK
</pre>
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