[Bug libstdc++/111553] Incorrect visibility of std::format

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111553

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is now documented as not-a-bug:
https://gcc.gnu.org/bugs/#nonbugs_cxx