[Bug libstdc++/108974] std::barrier except completion function which is not manifestly noexcept

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108974

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 54558
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54558&action=edit
Full testcase