[Bug c++/54483] undefined reference to static constexpr in .so

[usack at math dot fu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54483

--- Comment #7 from Juisoo <usack at math dot fu-berlin.de> ---
Created attachment 34148
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34148&action=edit
second test case