https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116070
--- Comment #14 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:ce84abae497ec2617a2eb12f40815639235be97c commit r14-10529-gce84abae497ec2617a2eb12f40815639235be97c Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Jul 24 11:32:22 2024 +0100 libstdc++: Fix std::vector<bool> for -std=gnu++14 -fconcepts [PR116070] This questionable combination of flags causes a number of errors. This one in std::vector<bool> needs to be fixed in the gcc-13 branch so I'm committing it separately to simplify backporting. libstdc++-v3/ChangeLog: PR libstdc++/116070 * include/bits/stl_bvector.h: Check feature test macro before using is_default_constructible_v. (cherry picked from commit 5fc9c40fea2481e56bf7bcc994cb40c71e28abb8)