<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=http://email.email.llvm.org/c/eJylU8uunDAM_ZqwsUAQhrnDgsV9dL6gatchMeAqQ1ASZi79-jrM3LZSu6hUKYQkdo6Pj53ema2z9nrJr-gDuVnUz1DVonwT5bNb0u5G8_EAOXy5O0BVFmVRteWhhpeVrIF9fb_xmI_lxRn0M33HfA2YR6_I0jzmHuPq5zxuC7ITfFVzFPIpQHQw0DvECWFw1jqOOQr5Cv0a06FHUPxJ8KiCm0My3aaNTRQgTG5lFrOLMKllwbn4yeIx9u3gCWcDauVYbkGvovOifhX1m6g_CXl6Bs3ITOeY0H_ftYyN7xqXCOwNBge12ijql7_Guc9QFcBHKVpKlGkqy-TNBotHjYbzu2e7zjqyqgXciQAqbzfAd4oPIFnA510BxpgdzIgmyRUW1DRsO8guZ1ILtWK5gWJyvnsQu9NlsaQpMvCVVOL1ex5M74_YwILQkIBuu7g9F6Cnkdy6a5-CandZyKpE_uE0cJEBKdULbmpj4TLT1aatW5WxEJPz3Rn7HrPV226KcQncXkKeeYx8a-0LxuRNasfHL1-8-4aa63CmEFbk6Oemrpsmm7qh1U39pOWh0c2xNbIyqjfSHFVVnhpzaDOrerShE82LkHLGG-wQvBbNW_b_DKiTpZRlJWUlq7Z5KhrT4rFsUDblqZdai0OJF9akSDiF82Pm70-tX8fARkshhl9GFQKNXN6dMDOMXDDstFX8biIZ1vP0D6-Ku3VQlptgcYEiXdOD8h-15l74aP1sz6bbU_kBDYRK1Q>53355</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-tidy(modernize-use-trailing-return-type) false positive for defaulted operator
        </td>
    </tr>

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

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

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

<pre>
    llvm-version: 13
op: win64 - Version 10.0.19043 Build 19043

`modernize-use-trailing-return-type` Want's to fix the following, but there are 2 reasons, why this should not happen.
```
friend auto operator<=>(A const&, A const&) noexcept = default;
```

 1. `auto` is already preceding the function. => early exit
 2. There is no need to specify the type, because it is specified implicitly via `= default` => early exit (if it would be abigious, the compilation would fail either way)
</pre>
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