https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115335
--- 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:2197814011eec75022aa8550f10621409b69d4a1 commit r15-1015-g2197814011eec75022aa8550f10621409b69d4a1 Author: Jonathan Wakely <jwak...@redhat.com> Date: Tue Jun 4 15:06:44 2024 +0100 libstdc++: Only define std::span::at for C++26 [PR115335] In r14-5689-g1fa85dcf656e2f I added std::span::at and made the correct changes to the __cpp_lib_span macro (with tests for the correct value in C++20/23/26). But I didn't make the declaration of std::span::at actually depend on the macro, so it was defined for C++20 and C++23, not only for C++26. This fixes that oversight. libstdc++-v3/ChangeLog: PR libstdc++/115335 * include/std/span (span::at): Guard with feature test macro.
