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Subject: [Bug libstdc++/102994] std::atomic<ptr>::wait is not marked const
Date: Thu, 03 Feb 2022 21:34:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102994

--- Comment #6 from =C3=93scar Fuentes <gcc_bugzilla at axeitado dot com> -=
--
(In reply to Jonathan Wakely from comment #5)
> (In reply to =C3=93scar Fuentes from comment #4)
> > The fix is wrong. It changes atomic_notify_one and atomic_notify_all in=
stead
> > of atomic<>::wait.
>=20
> It changed both.
>=20
> > So right now atomic<>::wait remains unfixed
>=20
> Are you sure?

Sigh. Sorry. It would be nice if the commit message mentioned the change to
atomic_notify_* and its motivation, though.

> > and atomic_notify_(one|all) arg
> > is wrongly marked as const.
>=20
> This will be the subject of a library issue, potentially fixing the
> standard. The notify functions should be const too.

So IIUC you are applying modifications to libstdc++ that deviate from the
published standard expecting that the committee will accept those changes. =
As a
user, this is troublesome, because right now I need to special-case gcc ver=
sion
>11.2 and maybe version <X.xx again in the future if the change is not acce=
pted
and is reverted.=