================================ libc++ C++17 Status

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

.. contents:: :local:

Overview

In November 2014, the C++ standard committee created a draft for the next version of the C++ standard, initially known as "C++1z". In February 2017, the C++ standard committee approved this draft, and sent it to ISO for approval as C++17.

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-cxx17:

Paper Status

.. csv-table:: :file: Cxx17Papers.csv :header-rows: 1 :widths: auto

.. note::

.. [#note-P0067] P0067: std::(to|from)_chars for integrals has been available since version 7.0. std::to_chars for float and double since version 14.0 std::to_chars for long double uses the implementation for double. .. [#note-P0226] P0226: Progress is tracked here. .. [#note-P0607] P0607: The parts of P0607 that are not done are the <regex> bits. .. [#note-P0154] P0154: The required macros are only implemented as of clang 19. .. [#note-P0452] P0452: The changes to std::transform_inclusive_scan and std::transform_exclusive_scan have not yet been implemented.

.. _issues-status-cxx17:

Library Working Group Issues Status

.. csv-table:: :file: Cxx17Issues.csv :header-rows: 1 :widths: auto