<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/65689>65689</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-cl.exe: False positive C++17 warning in C++14: out-of-line definition of constexpr static data member
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          dmitrykobets-msft
      </td>
    </tr>
</table>

<pre>
    When compiling with C++14, I'm getting a warning that pertains only to C++17.
I tried this out with LLVM 17.0.0-rc4.

## Repro

```cpp
class A
{
    static constexpr const int i{0};
};
constexpr const int A::i;

int main()
{
}
```

`clang-cl.exe <thefile.cpp> /std:c++14 -Weverything`

**Output**
warning: out-of-line definition of constexpr static data member is redundant in C++17 and is deprecated [-Wdeprecated-redundant-constexpr-static-def]


</pre>
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