Section: 23.4.6.1 [set.overview], 23.4.7.1 [multiset.overview], 23.5.6.1 [unord.set.overview], 23.5.7.1 [unord.multiset.overview] Status: C++23 Submitter: Jonathan Wakely Opened: 2022-05-25 Last modified: 2023-11-22
Priority: Not Prioritized
View all issues with C++23 status.
Discussion:
The restored erase(iterator) overloads introduced by LWG 2059 would be duplicates
of the erase(const_iterator) ones if iterator and const_iterator are the same
type, which is allowed for sets.
erase(iterator) overloads are only present
when the iterator types are distinct.
This applies to set, multiset, unordered_set, unordered_multiset
(and flat_set and flat_multiset).
[2022-06-21; Reflector poll]
Set status to Tentatively Ready after seven votes in favour during reflector poll.
[2022-07-15; LWG telecon: move to Ready]
[2022-07-25 Approved at July 2022 virtual plenary. Status changed: Ready → WP.]
Proposed resolution:
This wording is relative to N4910.
Modify 23.4.6.1 [set.overview], class template set synopsis, as indicated:
iterator erase(iterator position) requires (!same_as<iterator, const_iterator>); iterator erase(const_iterator position);
Modify 23.4.7.1 [multiset.overview], class template multiset synopsis, as indicated:
iterator erase(iterator position) requires (!same_as<iterator, const_iterator>); iterator erase(const_iterator position);
Modify 23.5.6.1 [unord.set.overview], class template unordered_set synopsis, as indicated:
iterator erase(iterator position) requires (!same_as<iterator, const_iterator>); iterator erase(const_iterator position);
Modify 23.5.7.1 [unord.multiset.overview], class template unordered_multiset synopsis, as indicated:
iterator erase(iterator position) requires (!same_as<iterator, const_iterator>); iterator erase(const_iterator position);