<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/121579>121579</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            LLVM Dwarf - asserts while compiling a module with debug information for unknown language
        </td>
    </tr>

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

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

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

<pre>
    See https://github.com/llvm/llvm-project/blob/5137c209f0c19668d06e48cc4293e4c01a77c964/llvm/include/llvm/BinaryFormat/Dwarf.h#L657 https://github.com/llvm/llvm-project/blob/5137c209f0c19668d06e48cc4293e4c01a77c964/llvm/include/llvm/BinaryFormat/Dwarf.h#L730

This assert may be triggered by compiling a module containing debug information for a language not listed in _SourceLanguage_ enumeration.

Values between `DW_LANG_lo_user` and `DW_LANG_hi_user` should be handled separately instead, not via a `switch` statement. Probably there are other places containing similar problems and they should be fixed too.
</pre>
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