1.. _cxx2a-status:
2
3================================
4libc++ C++20 Status
5================================
6
7.. include:: Helpers/Styles.rst
8
9.. contents::
10   :local:
11
12
13Overview
14================================
15
16In July 2017, the C++ standard committee created a draft for the next version of the C++ standard, initially known as "C++2a".
17In September 2020, the C++ standard committee approved this draft, and sent it to ISO for approval as C++20.
18
19This page shows the status of libc++; the status of clang's support of the language features is `here <https://clang.llvm.org/cxx_status.html#cxx2a>`__.
20
21.. attention:: Features in unreleased drafts of the standard are subject to change.
22
23The groups that have contributed papers:
24
25-  CWG - Core Language Working group
26-  LWG - Library working group
27-  SG1 - Study group #1 (Concurrency working group)
28
29.. note:: "Nothing to do" means that no library changes were needed to implement this change.
30
31.. _paper-status-cxx2a:
32
33Paper Status
34====================================
35
36.. csv-table::
37   :file: Cxx2aStatusPaperStatus.csv
38   :header-rows: 1
39   :widths: auto
40
41.. note::
42
43   .. [#note-P0600] P0600: The missing bits in P0600 are in |sect|\ [mem.res.class], |sect|\ [mem.poly.allocator.class], and |sect|\ [container.node.overview].
44   .. [#note-P0966] P0966: It was previously erroneously marked as complete in version 8.0. See `bug 45368 <https://llvm.org/PR45368>`__.
45
46   .. [#note-P0619] P0619: Only ``std::allocator`` part is implemented.
47
48
49.. _issues-status-cxx2a:
50
51Library Working Group Issues Status
52====================================
53
54.. csv-table::
55   :file: Cxx2aStatusIssuesStatus.csv
56   :header-rows: 1
57   :widths: auto
58
59Last Updated: 24-Nov-2020
60