[Bug c++/78551] Internal compiler error with constexpr initialization of union

[vlad at petric dot cc]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78551

--- Comment #1 from Vlad Petric <vlad at petric dot cc> ---
Created attachment 40166
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40166&action=edit
code that fails as attachment