From eb1aa9ad2afbcd8f3e939310d5785ff8563a8c5c Mon Sep 17 00:00:00 2001 From: Patrick Palka Date: Thu, 6 May 2021 09:11:44 -0400 Subject: [PATCH] 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. --- 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 2305bd200a53..48100e9d7f2f 100644 --- a/libstdc++-v3/include/std/ranges +++ b/libstdc++-v3/include/std/ranges @@ -1182,9 +1182,8 @@ namespace views::__adaptor _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 @@ -1450,9 +1449,8 @@ namespace views::__adaptor : _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 @@ -3386,8 +3384,8 @@ namespace views::__adaptor : _M_base(std::move(base)) { } - constexpr _Vp - base() const& requires copy_constructible<_Vp> + constexpr const _Vp& + base() const & noexcept { return _M_base; } constexpr _Vp -- 2.43.5