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From: Patrick Palka <ppalka@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r10-9906] libstdc++: Implement LWG 3533 changes to foo_view::iterator::base() Date: Thu, 10 Jun 2021 19:08:11 +0000 (GMT) [thread overview] Message-ID: <20210610190811.F2A2B398B42E@sourceware.org> (raw) https://gcc.gnu.org/g:3c01b4dd1b61399e9c06e3543531bee2bd38fac4 commit r10-9906-g3c01b4dd1b61399e9c06e3543531bee2bd38fac4 Author: Patrick Palka <ppalka@redhat.com> Date: Thu May 6 09:11:44 2021 -0400 libstdc++: Implement LWG 3533 changes to foo_view::iterator::base() libstdc++-v3/ChangeLog: * include/std/ranges (filter_view::_Iterator::base): Make the const& overload unconstrained and return a const reference as per LWG 3533. Make unconditionally noexcept. (transform_view::_Iterator::base): Likewise. (elements_view::_Iterator::base): Likewise. (cherry picked from commit eb1aa9ad2afbcd8f3e939310d5785ff8563a8c5c) Diff: --- libstdc++-v3/include/std/ranges | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/libstdc++-v3/include/std/ranges b/libstdc++-v3/include/std/ranges index 5f67f830174..c69a44f2ed8 100644 --- a/libstdc++-v3/include/std/ranges +++ b/libstdc++-v3/include/std/ranges @@ -1478,9 +1478,8 @@ namespace views _M_parent(__parent) { } - constexpr _Vp_iter - base() const & - requires copyable<_Vp_iter> + constexpr const _Vp_iter& + base() const & noexcept { return _M_current; } constexpr _Vp_iter @@ -1729,9 +1728,8 @@ namespace views : _M_current(std::move(__i._M_current)), _M_parent(__i._M_parent) { } - constexpr _Base_iter - base() const & - requires copyable<_Base_iter> + constexpr const _Base_iter& + base() const & noexcept { return _M_current; } constexpr _Base_iter @@ -3467,8 +3465,8 @@ namespace views : _M_base(std::move(base)) { } - constexpr _Vp - base() const& requires copy_constructible<_Vp> + constexpr const _Vp& + base() const & noexcept { return _M_base; } constexpr _Vp
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