<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/63892>63892</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [Clang] Consteval and static method call leads to error
        </td>
    </tr>

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

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

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

<pre>
    Hi! It seems that I`ve  met clang bug when trying to call static method using dot operator.
GCC and MSVC compiles this code ok, but CLANG fails, unfortunately

```
template <unsigned TValue>
class Foo
{
public:
    static consteval unsigned getSize()
    {
        return TValue;
    }
};

unsigned SumOK( Foo<4> a )
{
    unsigned s = 0;
    s += a.getSize();

    return s;
}

unsigned SumFAIL( Foo<4>& a )
{
    unsigned s = 0;
    s += a.getSize(); // Error here

 return s;
}

int main() {
}
```
```
<source>:25:10: error: call to consteval function 'Foo<4>::getSize' is not a constant expression
    s += a.getSize(); // Error here
 ^
<source>:25:10: note: function parameter 'a' with unknown value cannot be used in a constant expression
<source>:22:27: note: declared here
unsigned SumFAIL( Foo<4>& a )
                          ^
1 error generated.
Compiler returned: 1
```

https://godbolt.org/z/P8xvaP6Kf - compiler explorer
Thank you!
</pre>
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