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=========================================
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Libc++ 16.0.0 (In-Progress) Release Notes
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=========================================
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.. contents::
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:local:
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:depth: 2
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Written by the `Libc++ Team <https://libcxx.llvm.org>`_
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.. warning::
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These are in-progress notes for the upcoming libc++ 16 release.
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Release notes for previous releases can be found on
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`the Download Page <https://releases.llvm.org/download.html>`_.
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Introduction
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============
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This document contains the release notes for the libc++ C++ Standard Library,
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part of the LLVM Compiler Infrastructure, release 16.0.0. Here we describe the
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status of libc++ in some detail, including major improvements from the previous
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release and new feature work. For the general LLVM release notes, see `the LLVM
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documentation <https://llvm.org/docs/ReleaseNotes.html>`_. All LLVM releases may
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be downloaded from the `LLVM releases web site <https://llvm.org/releases/>`_.
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For more information about libc++, please see the `Libc++ Web Site
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<https://libcxx.llvm.org>`_ or the `LLVM Web Site <https://llvm.org>`_.
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Note that if you are reading this file from a Git checkout or the
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main Libc++ web page, this document applies to the *next* release, not
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the current one. To see the release notes for a specific release, please
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see the `releases page <https://llvm.org/releases/>`_.
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What's New in Libc++ 16.0.0?
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============================
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Implemented Papers
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------------------
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- P2499R0 - ``string_view`` range constructor should be ``explicit``
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- P2417R2 - A more constexpr bitset
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Improvements and New Features
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-----------------------------
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Deprecations and Removals
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-------------------------
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Upcoming Deprecations and Removals
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----------------------------------
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API Changes
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-----------
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- The comparison operators on ``thread::id`` are now defined as free-standing
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functions instead of as hidden friends, in conformance with the C++ standard.
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Also see `issue 56187 <https://github.com/llvm/llvm-project/issues/56187>`_.
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ABI Affecting Changes
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---------------------
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Build System Changes
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--------------------
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