https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115335
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-14 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:c6e6258ea43299399074f8d5f48697b5bc26064e commit r14-10281-gc6e6258ea43299399074f8d5f48697b5bc26064e 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. (cherry picked from commit 2197814011eec75022aa8550f10621409b69d4a1)
