[Bug c++/116676] GCC crashes on incorrect code with -std=c++23 in 'constexpr' expansion of 'std::get<0, const int&, details::spin_sync >(std::)'

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116676

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Slightly reduced:
```
#include <utility>
namespace std {
    auto [fet1, err1]
    = std::pair<const int &,
           int >
           { 1, 1 };
   int t;
}
```

and yes the namespace here needs to be std.