<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/108778>108778</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang 17/18 crashes with segmentation fault on compiling valid code.
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          Alexey104
      </td>
    </tr>
</table>

<pre>
    Compiling some code using C++20 features causes Clang 17.0.6/18.1.8 to crash with segmentation fault, while the same code compiles with Clang 16.0.6 or GCC. LLVM is obtained from ArchLinux repos via Pacman. Below is the minimal example I was managed to create to reproduce the issue:

[test.hpp.txt](https://github.com/user-attachments/files/17007478/test.hpp.txt)
[test.cpp.txt](https://github.com/user-attachments/files/17007479/test.cpp.txt)
[clang-output.txt](https://github.com/user-attachments/files/17007480/clang-output.txt)
[test-32f98a.cpp.txt](https://github.com/user-attachments/files/17007488/test-32f98a.cpp.txt)
[test-32f98a.sh.txt](https://github.com/user-attachments/files/17007489/test-32f98a.sh.txt)

</pre>
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