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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/102358] niter_base and miter_base overloaded for
 move_iterator missing constexpr
Date: Thu, 17 Feb 2022 10:29:40 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102358

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Artur Ba=C4=87 from comment #2)
> "* include/bits/stl_iterator.h (__niter_base): Make constexpr for C++20."
>=20
> c++20 ?
> according to cppreference make_move_iterator is constexpr since c++17
> https://en.cppreference.com/w/cpp/iterator/make_move_iterator

Yes, and that's what libstdc++ does. __niter_base is a different function.=