https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113807
--- 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:e7ae13a858f36031b8fd3aa07362752ff2b19b2e commit r14-9002-ge7ae13a858f36031b8fd3aa07362752ff2b19b2e Author: Jonathan Wakely <jwak...@redhat.com> Date: Thu Feb 8 15:46:08 2024 +0000 libstdc++: Use memset to optimize std::bitset::set() [PR113807] As pointed out in the PR we already do this for reset(). libstdc++-v3/ChangeLog: PR libstdc++/113807 * include/std/bitset (bitset::set()): Use memset instead of a loop over the individual words.