<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/62333>62333</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang++]: Fails to export destructor symbol for type encapsulated in anonymous union
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

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

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

<pre>
    ## Affected versions

All tested versions, from `16` to `4.0`.

## Description

Under certain conditions, `clang++` leaves the symbol for the destructor of a struct contained in an anonymous union as `undefined`, this cause later issues at linking time. Here it can be seeing the offending symbol from the provided example:

```
xpsdev ➜  clang_issue nm -a lib.o | grep non_dtor
                 U _ZN10non_dtor_tD1Ev
```

## Reproduction

* This is a minimal reproduction example on compiler explorer: https://godbolt.org/z/KbMzohnjW
* This is the minimal test case:  [clang_issue.tar.gz](https://github.com/llvm/llvm-project/files/11313531/clang_issue.tar.gz)



</pre>
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