<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/62686>62686</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Incorrect -Wenum-constexpr-conversion warning?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            false-positive
      </td>
    </tr>

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

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

<pre>
    With this (derived from Kleopatra, see https://bugs.gentoo.org/903576):
```c++
enum foo { x = 0xffff };
constexpr auto bar = static_cast<foo>(x + 1); /* fails */
static_assert (sizeof (x) == 4);
```

trunk gives:
```console
<source>:2:26: error: integer value 65536 is outside the valid range of values [0, 65535] for this enumeration type [-Wenum-constexpr-conversion]
constexpr auto bar = static_cast<foo>(x + 1); /* fails */
                         ^
``` 

It's getting the type right but not the range of valid enum values?

Thanks to @ArsenArsen for reducing it.

cc @shafik
</pre>
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