<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/99684>99684</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            is_constant_evaluated can evaluate to false in array bound
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          efriedma-quic
      </td>
    </tr>
</table>

<pre>
    ```
#include <type_traits>
int z[1/(1-std::is_constant_evaluated())];
```

clang prints the following, which is extremely confusing:

```
<source>:2:7: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension]
 2 | int z[1/(1-std::is_constant_evaluated())];
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<source>:2:8: note: division by zero
    2 | int z[1/(1-std::is_constant_evaluated())];
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<source>:2:5: warning: variable length array folded to constant array as an extension [-Wgnu-folding-constant]
 2 | int z[1/(1-std::is_constant_evaluated())];
      |     ^
2 warnings generated.
```
</pre>
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