https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114692
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 57927 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57927&action=edit gcc14-libstdc++-baseline-updates.patch This was what I've been preparing before noticing this issue. If we change libstdc++, that will need to be regenerated obviously (plus libstdc++-v3/testsuite/util/testsuite_abi.cc updated of course).