================================ libc++ C++2c Status

.. include:: ../Helpers/Styles.rst

.. contents:: :local:

Overview

In June 2023, the C++ standard committee adopted the first changes to the next version of the C++ standard, known here as "C++2c" (probably to be C++26).

This page shows the status of libc++; the status of clang's support of the language features is here.

.. attention:: Features in unreleased drafts of the standard are subject to change.

The groups that have contributed papers:

CWG - Core Language Working group
LWG - Library working group
SG1 - Study group #1 (Concurrency working group)

.. note:: "Nothing to do" means that no library changes were needed to implement this change.

.. _paper-status-cxx2c:

Paper Status

.. csv-table:: :file: Cxx2cPapers.csv :header-rows: 1 :widths: auto

.. note::

.. [#note-P2510R3] This paper is applied as DR against C++20. (MSVC STL and libstdc++ will do the same.) .. [#note-P3142R0] This paper is applied as DR against C++23. (MSVC STL and libstdc++ will do the same.) .. [#note-P2944R3] Implemented comparisons for reference_wrapper only. .. [#note-P2422R1] Libc++ keeps the nodiscard attributes as a conforming extension. .. [#note-P2997R1] This paper is applied as DR against C++20. (MSVC STL and libstdc++ will do the same.)

.. _issues-status-cxx2c:

Library Working Group Issues Status

.. csv-table:: :file: Cxx2cIssues.csv :header-rows: 1 :widths: auto