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From: "pdimov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/108836] std::mutex disappears in single-threaded
 libstdc++ builds
Date: Fri, 17 Feb 2023 23:35:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108836

--- Comment #4 from Peter Dimov <pdimov at gmail dot com> ---
A compromise between no mutex at all, and a mutex that is silently a no-op,
could be a no-op mutex with [[deprecated]] members, although the atomic_fla=
g is
probably better.=