<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/62230>62230</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            MC: AsmParser::DiagHandler returning old Diagnostic location
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          BenjaminGrayNp1
      </td>
    </tr>
</table>

<pre>
    The Diagnostic handling wrapper of `AsmParser` will try to remap the line number according to `# N filepath` directives, but doesn't return the updated diagnostic when `SavedDiagHandler` is set (as opposed to dumping it to the default output, which correctly uses `NewDiag`).

The `SavedDiagHandler` case should also be using `NewDiag`. 

https://github.com/llvm/llvm-project/blob/9356097206a17eb781180d5f895b52f8b0333f8e/llvm/lib/MC/MCParser/AsmParser.cpp#L2485-L2493
</pre>
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