https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112832
--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:3cd73543a1122d3c81409e3e9a26c3e94c3d324f commit r14-6189-g3cd73543a1122d3c81409e3e9a26c3e94c3d324f Author: Jonathan Wakely <jwak...@redhat.com> Date: Mon Dec 4 12:03:28 2023 +0000 libstdc++: Disable std::formatter::set_debug_format [PR112832] All set_debug_format member functions should be guarded by the __cpp_lib_formatting_ranges macro (which is not defined yet). libstdc++-v3/ChangeLog: PR libstdc++/112832 * include/std/format (formatter::set_debug_format): Ensure this member is defined conditionally for all specializations. * testsuite/std/format/formatter/112832.cc: New test.