[Bug c++/107186] GCC rejects use of static constexpr member function in noexcept complete-class context

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107186

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So it follows that this doesn't work either:

```
struct A {
   constexpr static bool func() 
   { 
       return true; 
   }
  constexpr static bool i = func();
};
```