[Bug c++/117785] [C++26] P3068R5 - constexpr exceptions

[hanicka at hanicka dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117785

--- Comment #12 from Hana Dusíková <hanicka at hanicka dot net> ---
I'm using [[gnu::used]] to emit constexpr symbol so it can be part of
compatible interface.