https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111826
--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:9f5011f9e6e347e0b91f47a118a0ce58a2c2d99a commit r13-8140-g9f5011f9e6e347e0b91f47a118a0ce58a2c2d99a Author: Jonathan Wakely <jwak...@redhat.com> Date: Fri Dec 8 14:40:26 2023 +0000 libstdc++: Fix value of __cpp_lib_format macro [PR111826] As noted in the PR, we support both features required for the 202110L value, so we should define it with that value. libstdc++-v3/ChangeLog: PR libstdc++/111826 * include/std/format (__cpp_lib_format): Update value. * include/std/version (__cpp_lib_format): Likewise. * testsuite/std/format/functions/format.cc: Update expected value. (cherry picked from commit cdf45e00a936a76a785c592c9730f24ef1ac25cd)