Apply workaround for Intel-16

Without this I see: ``` /boost/core/noncopyable.hpp(42): error: defaulted default constructor cannot be constexpr because the corresponding implicitly declared default constructor would not be constexpr BOOST_CONSTEXPR noncopyable() = default; ``` See: https://travis-ci.org/boostorg/type_traits/jobs/4722892817 Not sure if later Intel versions also require this... still working on that.
2018-12-30 18:29:54 +00:00
172 changed files with 555 additions and 9208 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,509 +0,0 @@
-# Copyright 2020-2021 Peter Dimov
-# Copyright 2021 Andrey Semashev
-#
-# Distributed under the Boost Software License, Version 1.0.
-# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
-
-name: CI
-
-on:
-  pull_request:
-  push:
-    branches:
-      - master
-      - develop
-      - feature/**
-
-concurrency:
-  group: ${{format('{0}:{1}', github.repository, github.ref)}}
-  cancel-in-progress: true
-
-env:
-  GIT_FETCH_JOBS: 8
-  NET_RETRY_COUNT: 5
-  DEFAULT_BUILD_VARIANT: debug,release
-
-jobs:
-  posix:
-    defaults:
-      run:
-        shell: bash
-
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          # Linux, gcc
-          - toolset: gcc-4.4
-            cxxstd: "98,0x"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - g++-4.4
-            sources:
-              - "ppa:ubuntu-toolchain-r/test"
-          - toolset: gcc-4.6
-            cxxstd: "03,0x"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - g++-4.6
-            sources:
-              - "ppa:ubuntu-toolchain-r/test"
-          - toolset: gcc-4.7
-            cxxstd: "03,11"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - g++-4.7
-          - toolset: gcc-4.8
-            cxxstd: "03,11"
-            os: ubuntu-18.04
-            install:
-              - g++-4.8
-          - toolset: gcc-4.9
-            cxxstd: "03,11"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - g++-4.9
-          - toolset: gcc-5
-            cxxstd: "03,11,14,1z"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - g++-5
-          - toolset: gcc-6
-            cxxstd: "03,11,14,1z"
-            os: ubuntu-18.04
-            install:
-              - g++-6
-          - toolset: gcc-7
-            cxxstd: "03,11,14,17"
-            os: ubuntu-18.04
-            install:
-              - g++-7
-          - toolset: gcc-8
-            cxxstd: "03,11,14,17,2a"
-            os: ubuntu-18.04
-            install:
-              - g++-8
-          - toolset: gcc-9
-            cxxstd: "03,11,14,17,2a"
-            os: ubuntu-18.04
-            install:
-              - g++-9
-          - toolset: gcc-10
-            cxxstd: "03,11,14,17,20"
-            os: ubuntu-20.04
-            install:
-              - g++-10
-          - toolset: gcc-11
-            cxxstd: "03,11,14,17,20"
-            os: ubuntu-20.04
-            install:
-              - g++-11
-            sources:
-              - "ppa:ubuntu-toolchain-r/test"
-          - name: UBSAN
-            toolset: gcc-11
-            cxxstd: "03,11,14,17,20"
-            ubsan: 1
-            os: ubuntu-20.04
-            install:
-              - g++-11
-            sources:
-              - "ppa:ubuntu-toolchain-r/test"
-
-          # Linux, clang
-          - toolset: clang
-            compiler: clang++-3.5
-            cxxstd: "03,11"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - clang-3.5
-          - toolset: clang
-            compiler: clang++-3.6
-            cxxstd: "03,11,14"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - clang-3.6
-          - toolset: clang
-            compiler: clang++-3.7
-            cxxstd: "03,11,14"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - clang-3.7
-          - toolset: clang
-            compiler: clang++-3.8
-            cxxstd: "03,11,14"
-            os: ubuntu-20.04
-            container: ubuntu:16.04
-            install:
-              - clang-3.8
-          - toolset: clang
-            compiler: clang++-3.9
-            cxxstd: "03,11,14"
-            os: ubuntu-18.04
-            install:
-              - clang-3.9
-          - toolset: clang
-            compiler: clang++-4.0
-            cxxstd: "03,11,14"
-            os: ubuntu-18.04
-            install:
-              - clang-4.0
-          - toolset: clang
-            compiler: clang++-5.0
-            cxxstd: "03,11,14,1z"
-            os: ubuntu-18.04
-            install:
-              - clang-5.0
-          - toolset: clang
-            compiler: clang++-6.0
-            cxxstd: "03,11,14,17"
-            os: ubuntu-18.04
-            install:
-              - clang-6.0
-          - toolset: clang
-            compiler: clang++-7
-            cxxstd: "03,11,14,17"
-            os: ubuntu-18.04
-            install:
-              - clang-7
-          # Note: clang-8 does not fully support C++20, so it is not compatible with libstdc++-8 in this mode
-          - toolset: clang
-            compiler: clang++-8
-            cxxstd: "03,11,14,17,2a"
-            os: ubuntu-18.04
-            install:
-              - clang-8
-              - g++-7
-            gcc_toolchain: 7
-          - toolset: clang
-            compiler: clang++-9
-            cxxstd: "03,11,14,17,2a"
-            os: ubuntu-20.04
-            install:
-              - clang-9
-          - toolset: clang
-            compiler: clang++-10
-            cxxstd: "03,11,14,17,20"
-            os: ubuntu-20.04
-            install:
-              - clang-10
-          - toolset: clang
-            compiler: clang++-11
-            cxxstd: "03,11,14,17,20"
-            os: ubuntu-20.04
-            install:
-              - clang-11
-          - toolset: clang
-            compiler: clang++-12
-            cxxstd: "03,11,14,17,20"
-            os: ubuntu-20.04
-            install:
-              - clang-12
-          - toolset: clang
-            compiler: clang++-12
-            cxxstd: "03,11,14,17,20"
-            cxxflags: -stdlib=libc++
-            linkflags: -stdlib=libc++
-            os: ubuntu-20.04
-            install:
-              - clang-12
-              - libc++-12-dev
-              - libc++abi-12-dev
-          - name: UBSAN
-            toolset: clang
-            compiler: clang++-12
-            cxxstd: "03,11,14,17,20"
-            cxxflags: -stdlib=libc++
-            linkflags: -stdlib=libc++
-            ubsan: 1
-            os: ubuntu-20.04
-            install:
-              - clang-12
-              - libc++-12-dev
-              - libc++abi-12-dev
-
-          - toolset: clang
-            cxxstd: "03,11,14,17,2a"
-            os: macos-10.15
-
-          - name: CMake tests
-            cmake_tests: 1
-            os: ubuntu-20.04
-
-    timeout-minutes: 120
-    runs-on: ${{matrix.os}}
-    container: ${{matrix.container}}
-
-    steps:
-      - name: Setup environment
-        run: |
-            if [ -f "/etc/debian_version" ]
-            then
-                echo "DEBIAN_FRONTEND=noninteractive" >> $GITHUB_ENV
-                export DEBIAN_FRONTEND=noninteractive
-            fi
-            if [ -n "${{matrix.container}}" ]
-            then
-                echo "GHA_CONTAINER=${{matrix.container}}" >> $GITHUB_ENV
-                if [ -f "/etc/debian_version" ]
-                then
-                    apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
-                    apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y sudo software-properties-common tzdata wget curl apt-transport-https ca-certificates make build-essential g++ python python3 git cmake
-                fi
-            fi
-            git config --global pack.threads 0
-
-      - uses: actions/checkout@v2
-
-      - name: Install packages
-        if: matrix.install
-        run: |
-            SOURCE_KEYS=(${{join(matrix.source_keys, ' ')}})
-            SOURCES=(${{join(matrix.sources, ' ')}})
-            for key in "${SOURCE_KEYS[@]}"
-            do
-                for i in {1..$NET_RETRY_COUNT}
-                do
-                    wget -O - "$key" | sudo apt-key add - && break || sleep 2
-                done
-            done
-            if [ ${#SOURCES[@]} -gt 0 ]
-            then
-                APT_ADD_REPO_COMMON_ARGS=("-y")
-                APT_ADD_REPO_HAS_SOURCE_ARGS=0
-                SOFTWARE_PROPERTIES_VERSION="$(dpkg-query --showformat='${Version}' --show software-properties-common)"
-                if dpkg --compare-versions "$SOFTWARE_PROPERTIES_VERSION" ge "0.96.24.20"
-                then
-                    APT_ADD_REPO_COMMON_ARGS+=("-n")
-                fi
-                if dpkg --compare-versions "$SOFTWARE_PROPERTIES_VERSION" ge "0.98.10"
-                then
-                    APT_ADD_REPO_HAS_SOURCE_ARGS=1
-                fi
-                for source in "${SOURCES[@]}"
-                do
-                    for i in {1..$NET_RETRY_COUNT}
-                    do
-                        APT_ADD_REPO_ARGS=("${APT_ADD_REPO_COMMON_ARGS[@]}")
-                        if [ $APT_ADD_REPO_HAS_SOURCE_ARGS -ne 0 ]
-                        then
-                            case "$source" in
-                            "ppa:"*)
-                                APT_ADD_REPO_ARGS+=("-P")
-                                ;;
-                            "deb "*)
-                                APT_ADD_REPO_ARGS+=("-S")
-                                ;;
-                            *)
-                                APT_ADD_REPO_ARGS+=("-U")
-                                ;;
-                            esac
-                        fi
-                        APT_ADD_REPO_ARGS+=("$source")
-                        sudo -E apt-add-repository "${APT_ADD_REPO_ARGS[@]}" && break || sleep 2
-                    done
-                done
-            fi
-            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
-            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y ${{join(matrix.install, ' ')}}
-
-      - name: Setup GCC Toolchain
-        if: matrix.gcc_toolchain
-        run: |
-            GCC_TOOLCHAIN_ROOT="$HOME/gcc-toolchain"
-            echo "GCC_TOOLCHAIN_ROOT=\"$GCC_TOOLCHAIN_ROOT\"" >> $GITHUB_ENV
-            MULTIARCH_TRIPLET="$(dpkg-architecture -qDEB_HOST_MULTIARCH)"
-            mkdir -p "$GCC_TOOLCHAIN_ROOT"
-            ln -s /usr/include "$GCC_TOOLCHAIN_ROOT/include"
-            ln -s /usr/bin "$GCC_TOOLCHAIN_ROOT/bin"
-            mkdir -p "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET"
-            ln -s "/usr/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}" "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}"
-
-      - name: Setup Boost
-        run: |
-            echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
-            LIBRARY=${GITHUB_REPOSITORY#*/}
-            echo LIBRARY: $LIBRARY
-            echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
-            echo GITHUB_BASE_REF: $GITHUB_BASE_REF
-            echo GITHUB_REF: $GITHUB_REF
-            REF=${GITHUB_BASE_REF:-$GITHUB_REF}
-            REF=${REF#refs/heads/}
-            echo REF: $REF
-            BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true
-            echo BOOST_BRANCH: $BOOST_BRANCH
-            BUILD_JOBS=$((nproc || sysctl -n hw.ncpu) 2> /dev/null)
-            echo "BUILD_JOBS=$BUILD_JOBS" >> $GITHUB_ENV
-            echo "CMAKE_BUILD_PARALLEL_LEVEL=$BUILD_JOBS" >> $GITHUB_ENV
-            DEPINST_ARGS=()
-            GIT_VERSION="$(git --version | sed -e 's/git version //')"
-            GIT_HAS_JOBS=1
-            if [ -f "/etc/debian_version" ]
-            then
-                if $(dpkg --compare-versions "$GIT_VERSION" lt 2.8.0)
-                then
-                    GIT_HAS_JOBS=0
-                fi
-            else
-                declare -a GIT_VER=(${GIT_VERSION//./ })
-                declare -a GIT_MIN_VER=(2 8 0)
-                for ((i=0; i<${#GIT_VER[@]}; i++))
-                do
-                    if [ -z "${GIT_MIN_VER[i]}" ]
-                    then
-                        GIT_MIN_VER[i]=0
-                    fi
-                    if [ "${GIT_VER[i]}" -lt "${GIT_MIN_VER[i]}" ]
-                    then
-                        GIT_HAS_JOBS=0
-                        break
-                    fi
-                done
-            fi
-            if [ "$GIT_HAS_JOBS" -ne 0 ]
-            then
-                DEPINST_ARGS+=("--git_args" "--jobs $GIT_FETCH_JOBS")
-            fi
-            cd ..
-            git clone -b "$BOOST_BRANCH" --depth 1 "https://github.com/boostorg/boost.git" "boost-root"
-            cd boost-root
-            mkdir -p libs/$LIBRARY
-            cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
-            git submodule update --init tools/boostdep
-            DEPINST_ARGS+=("$LIBRARY")
-            python tools/boostdep/depinst/depinst.py "${DEPINST_ARGS[@]}"
-            if [ -z "${{matrix.cmake_tests}}" ]
-            then
-                ./bootstrap.sh
-                ./b2 headers
-                if [ -n "${{matrix.compiler}}" -o -n "$GCC_TOOLCHAIN_ROOT" ]
-                then
-                    echo -n "using ${{matrix.toolset}} : : ${{matrix.compiler}}" > ~/user-config.jam
-                    if [ -n "$GCC_TOOLCHAIN_ROOT" ]
-                    then
-                        echo -n " : <compileflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\" <linkflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\"" >> ~/user-config.jam
-                    fi
-                    echo " ;" >> ~/user-config.jam
-                fi
-            fi
-
-      - name: Run tests
-        if: matrix.cmake_tests == ''
-        run: |
-            cd ../boost-root
-            B2_ARGS=("-j" "$BUILD_JOBS" "toolset=${{matrix.toolset}}" "cxxstd=${{matrix.cxxstd}}")
-            if [ -n "${{matrix.build_variant}}" ]
-            then
-                B2_ARGS+=("variant=${{matrix.build_variant}}")
-            else
-                B2_ARGS+=("variant=$DEFAULT_BUILD_VARIANT")
-            fi
-            if [ -n "${{matrix.threading}}" ]
-            then
-                B2_ARGS+=("threading=${{matrix.threading}}")
-            fi
-            if [ -n "${{matrix.ubsan}}" ]
-            then
-                export UBSAN_OPTIONS="print_stacktrace=1"
-                B2_ARGS+=("cxxflags=-fsanitize=undefined -fno-sanitize-recover=undefined" "linkflags=-fsanitize=undefined -fuse-ld=gold" "define=UBSAN=1" "debug-symbols=on" "visibility=global")
-            fi
-            if [ -n "${{matrix.cxxflags}}" ]
-            then
-                B2_ARGS+=("cxxflags=${{matrix.cxxflags}}")
-            fi
-            if [ -n "${{matrix.linkflags}}" ]
-            then
-                B2_ARGS+=("linkflags=${{matrix.linkflags}}")
-            fi
-            B2_ARGS+=("libs/$LIBRARY/test")
-            ./b2 "${B2_ARGS[@]}"
-
-      - name: Run CMake tests
-        if: matrix.cmake_tests != ''
-        run: |
-            cd ../boost-root
-            mkdir __build_cmake_test__ && cd __build_cmake_test__
-            cmake -DBUILD_TESTING=ON -DBOOST_INCLUDE_LIBRARIES=$LIBRARY ..
-            cmake --build . --target tests
-            ctest --output-on-failure
-
-      - name: Run CMake subdir tests
-        if: matrix.cmake_tests != ''
-        run: |
-            cd ../boost-root/libs/$LIBRARY/test/cmake_subdir_test
-            mkdir __build_cmake_subdir_test__ && cd __build_cmake_subdir_test__
-            cmake ..
-            cmake --build .
-            cmake --build . --target check
-
-      - name: Run CMake install tests
-        if: matrix.cmake_tests != ''
-        run: |
-            cd ../boost-root
-            mkdir __build_cmake_install_test__ && cd __build_cmake_install_test__
-            cmake -DBOOST_INCLUDE_LIBRARIES=$LIBRARY -DCMAKE_INSTALL_PREFIX=~/.local ..
-            cmake --build . --target install
-            cd ../libs/$LIBRARY/test/cmake_install_test
-            mkdir __build_cmake_install_test__ && cd __build_cmake_install_test__
-            cmake -DCMAKE_INSTALL_PREFIX=~/.local ..
-            cmake --build .
-            cmake --build . --target check
-
-  windows:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - toolset: msvc-14.1
-            cxxstd: "14,17,latest"
-            addrmd: 32,64
-            os: windows-2016
-          - toolset: msvc-14.2
-            cxxstd: "14,17,latest"
-            addrmd: 32,64
-            os: windows-2019
-          - toolset: gcc
-            cxxstd: "03,11,14,17,2a"
-            addrmd: 64
-            os: windows-2019
-
-    runs-on: ${{matrix.os}}
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Setup Boost
-        shell: cmd
-        run: |
-            echo GITHUB_REPOSITORY: %GITHUB_REPOSITORY%
-            for /f %%i in ("%GITHUB_REPOSITORY%") do set LIBRARY=%%~nxi
-            echo LIBRARY: %LIBRARY%
-            echo LIBRARY=%LIBRARY%>>%GITHUB_ENV%
-            echo GITHUB_BASE_REF: %GITHUB_BASE_REF%
-            echo GITHUB_REF: %GITHUB_REF%
-            if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
-            set BOOST_BRANCH=develop
-            for /f %%i in ("%GITHUB_BASE_REF%") do if "%%~nxi" == "master" set BOOST_BRANCH=master
-            echo BOOST_BRANCH: %BOOST_BRANCH%
-            cd ..
-            git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
-            cd boost-root
-            xcopy /s /e /q %GITHUB_WORKSPACE% libs\%LIBRARY%\
-            git submodule update --init tools/boostdep
-            python tools/boostdep/depinst/depinst.py --git_args "--jobs %GIT_FETCH_JOBS%" %LIBRARY%
-            cmd /c bootstrap
-            b2 -d0 headers
-
-      - name: Run tests
-        shell: cmd
-        run: |
-            cd ../boost-root
-            b2 -j %NUMBER_OF_PROCESSORS% libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release
--- a/.travis.yml
+++ b/.travis.yml
@@ -0,0 +1,281 @@
+# Copyright 2016-2018 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+language: cpp
+
+sudo: false
+
+python: "2.7"
+
+branches:
+  only:
+    - master
+    - develop
+    - /feature\/.*/
+
+env:
+  matrix:
+    - BOGUS_JOB=true
+
+matrix:
+
+  exclude:
+    - env: BOGUS_JOB=true
+
+  include:
+    - os: linux
+      compiler: g++
+      env: TOOLSET=gcc COMPILER=g++ CXXSTD=03,11
+
+    - os: linux
+      compiler: g++-4.4
+      env: TOOLSET=gcc COMPILER=g++-4.4 CXXSTD=98,0x
+      addons:
+        apt:
+          packages:
+            - g++-4.4
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-4.6
+      env: TOOLSET=gcc COMPILER=g++-4.6 CXXSTD=03,0x
+      addons:
+        apt:
+          packages:
+            - g++-4.6
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-4.7
+      env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=03,11
+      addons:
+        apt:
+          packages:
+            - g++-4.7
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-4.8
+      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=03,11
+      addons:
+        apt:
+          packages:
+            - g++-4.8
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-4.9
+      env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=03,11
+      addons:
+        apt:
+          packages:
+            - g++-4.9
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-5
+      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - g++-5
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-6
+      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - g++-6
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      dist: trusty
+      compiler: g++-7
+      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=03,11,14,17
+      addons:
+        apt:
+          packages:
+            - g++-7
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-8
+      env: TOOLSET=gcc COMPILER=g++-8 CXXSTD=03,11,14,17
+      addons:
+        apt:
+          packages:
+            - g++-8
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-8
+      env: UBSAN=1 TOOLSET=gcc COMPILER=g++-8 CXXSTD=03,11,14,17 UBSAN_OPTIONS=print_stacktrace=1 LINKFLAGS=-fuse-ld=gold
+      addons:
+        apt:
+          packages:
+            - g++-8
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11
+
+    - os: linux
+      compiler: clang++-3.5
+      env: TOOLSET=clang COMPILER=clang++-3.5 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.5
+            - libstdc++-4.9-dev
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.6
+      env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.6
+            - libstdc++-4.9-dev
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.8
+      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+            - libstdc++-4.9-dev
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.9
+      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.9
+            - libstdc++-4.9-dev
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-4.0
+      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-4.0
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty-4.0
+
+    - os: linux
+      compiler: clang++-5.0
+      env: TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-5.0
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty-5.0
+
+    - os: linux
+      compiler: clang++-6.0
+      env: TOOLSET=clang COMPILER=clang++-6.0 CXXSTD=03,11,14,17
+      addons:
+        apt:
+          packages:
+            - clang-6.0
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty-6.0
+
+    - os: linux
+      compiler: clang++-7
+      env: TOOLSET=clang COMPILER=clang++-7 CXXSTD=03,11,14,17
+      addons:
+        apt:
+          packages:
+            - clang-7
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty-7
+
+    - os: linux
+      compiler: clang++-6.0
+      env: UBSAN=1 TOOLSET=clang COMPILER=clang++-6.0 CXXSTD=03,11,14,1z UBSAN_OPTIONS=print_stacktrace=1
+      addons:
+        apt:
+          packages:
+            - clang-6.0
+            - libstdc++-5-dev
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty-6.0
+
+    - os: linux
+      compiler: clang++-libc++
+      env: TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - libc++-dev
+
+    - os: linux
+      compiler: clang++-libc++
+      env: UBSAN=1 TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=03,11,14,1z UBSAN_OPTIONS=print_stacktrace=1
+      addons:
+        apt:
+          packages:
+            - libc++-dev
+
+    - os: osx
+      compiler: clang++
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+
+install:
+  - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+  - cd ..
+  - git clone -b $BOOST_BRANCH https://github.com/boostorg/boost.git boost-root
+  - cd boost-root
+  - git submodule init libs/headers
+  - git submodule init libs/assert
+  - git submodule init libs/config
+  - git submodule init libs/predef
+  - git submodule init libs/static_assert
+  - git submodule init libs/type_traits
+  - git submodule init tools/build
+  - git submodule init tools/boost_install
+  - git submodule update --jobs 4
+  - cp -r $TRAVIS_BUILD_DIR/* libs/core
+  - ./bootstrap.sh
+  - ./b2 headers
+
+script:
+  - |-
+    echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
+  - ./b2 -j 3 libs/core/test toolset=$TOOLSET cxxstd=$CXXSTD variant=debug,release ${UBSAN:+cxxflags=-fsanitize=undefined cxxflags=-fno-sanitize-recover=undefined linkflags=-fsanitize=undefined define=UBSAN=1 debug-symbols=on} ${LINKFLAGS:+linkflags=$LINKFLAGS}
+
+notifications:
+  email:
+    on_success: always
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,10 +1,13 @@
-# Copyright 2018, 2019 Peter Dimov
+# Copyright 2018 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 # See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt

-cmake_minimum_required(VERSION 3.5...3.16)
+# Partial (add_subdirectory only) and experimental CMake support
+# Subject to change; please do not rely on the contents of this file yet

-project(boost_core VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
+cmake_minimum_required(VERSION 3.5)
+
+project(BoostCore LANGUAGES CXX)

 add_library(boost_core INTERFACE)
 add_library(Boost::core ALIAS boost_core)
@@ -12,13 +15,7 @@ add_library(Boost::core ALIAS boost_core)
 target_include_directories(boost_core INTERFACE include)

 target_link_libraries(boost_core
-  INTERFACE
-    Boost::assert
-    Boost::config
+    INTERFACE
+        Boost::assert
+        Boost::config
 )
-
-if(BUILD_TESTING)
-
-  add_subdirectory(test)
-
-endif()
--- a/README.md
+++ b/README.md
@@ -8,12 +8,12 @@ The criteria for inclusion is that the utility component be:
 * used by other Boost libraries, and
 * not dependent on any other Boost modules except Core itself, Config, Assert, Static Assert, or Predef.

-### Build Status
+### CI Status

-Branch   | GitHub Actions | AppVeyor | Test Matrix | Dependencies |
---------|----------------|--------- | ----------- | ------------ |
-Develop  | [![GitHub Actions](https://github.com/boostorg/core/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/filesystem/actions?query=branch%3Adevelop) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/github/boostorg/core?branch=develop&svg=true)](https://ci.appveyor.com/project/pdimov/core) | [![Tests](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/core.html) | [![Dependencies](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/core.html)
-Master   | [![GitHub Actions](https://github.com/boostorg/core/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/filesystem/actions?query=branch%3Amaster) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/github/boostorg/core?branch=master&svg=true)](https://ci.appveyor.com/project/pdimov/core) | [![Tests](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/core.html) | [![Dependencies](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/core.html)
+Branch   | Travis | Appveyor
+---------|--------|---------
+Develop  | [![Build Status](https://travis-ci.org/boostorg/core.svg?branch=develop)](https://travis-ci.org/boostorg/core) | [![Build Status](https://ci.appveyor.com/api/projects/status/github/boostorg/core?branch=develop&svg=true)](https://ci.appveyor.com/project/pdimov/core)
+Master   | [![Build Status](https://travis-ci.org/boostorg/core.svg?branch=master)](https://travis-ci.org/boostorg/core) | [![Build Status](https://ci.appveyor.com/api/projects/status/github/boostorg/core?branch=master&svg=true)](https://ci.appveyor.com/project/pdimov/core)

 ### Directories

--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-# Copyright 2016-2019 Peter Dimov
+# Copyright 2016, 2017 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)

@@ -14,52 +14,37 @@ branches:

 environment:
  matrix:
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0
-      ADDRMD: 32
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+      TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0,msvc-12.0

    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      TOOLSET: msvc-12.0,msvc-14.0
-      ADDRMD: 32,64
+      TOOLSET: msvc-14.0

    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
      TOOLSET: msvc-14.1
-      ADDRMD: 32,64
      CXXSTD: 14,17

-    # clang-win 32 bit fails to link with "unable to load mspdbcore.dll (error code: 126)"
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      TOOLSET: clang-win
-      ADDRMD: 64
-      CXXSTD: 14,17
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      TOOLSET: msvc-14.2
-      ADDRMD: 32,64
-      CXXSTD: 14,17,latest
-
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\cygwin\bin;
      TOOLSET: gcc
      CXXSTD: 03,11,14,1z

-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\cygwin64\bin;
      TOOLSET: gcc
      CXXSTD: 03,11,14,1z

-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\mingw\bin;
      TOOLSET: gcc
      CXXSTD: 03,11,14,1z

-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin;
      TOOLSET: gcc
      CXXSTD: 03,11,14,1z

-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;
      TOOLSET: gcc
      CXXSTD: 03,11,14,1z
@@ -75,12 +60,11 @@ install:
  - git submodule init libs/config
  - git submodule init libs/predef
  - git submodule init libs/static_assert
-  - git submodule init libs/throw_exception
  - git submodule init libs/type_traits
  - git submodule init tools/build
  - git submodule init tools/boost_install
  - git submodule update --jobs 4
-  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\core\
+  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\core
  - cmd /c bootstrap
  - b2 headers

@@ -89,5 +73,4 @@ build: off
 test_script:
  - PATH=%ADDPATH%%PATH%
  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
-  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
-  - b2 -j %NUMBER_OF_PROCESSORS% libs/core/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release
+  - b2 -j 3 libs/core/test toolset=%TOOLSET% %CXXSTD%
--- a/doc/Jamfile.v2
+++ b/doc/Jamfile.v2
@@ -49,7 +49,7 @@ boostbook standalone
    <xsl:param>boost.root=../../../..
    <xsl:param>generate.section.toc.level=1
    <xsl:param>toc.max.depth=1
-    <format>pdf:<xsl:param>boost.url.prefix="http://www.boost.org/doc/libs/release/libs/core/doc/html"
+    <format>pdf:<xsl:param>boost.url.prefix=http://www.boost.org/doc/libs/release/libs/core/doc/html
  ;

 ###############################################################################
--- a/doc/alloc_construct.qbk
+++ b/doc/alloc_construct.qbk
@@ -1,149 +0,0 @@
-[/
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-]
-
-[section:alloc_construct alloc_construct, alloc_destroy]
-
-[simplesect Authors]
-
-* Glen Fernandes
-
-[endsimplesect]
-
-[section Overview]
-
-The header <boost/core/alloc_construct.hpp> provides function templates
-`alloc_construct`, `alloc_construct_n`, `alloc_destroy`, and `alloc_destroy_n`
-for allocator aware and exception safe construction and destruction of objects
-and arrays.
-
-[endsect]
-
-[section Example]
-
-The following example allocates storage for an array of `n` elements of `T`
-using an allocator `a` and constructs `T` elements in that storage. If any
-exception was thrown during construction of an element, the constructed
-elements are destroyed in reverse order.
-
-```
-template<class A>
-auto create(A& a, std::size_t n)
-{
-    auto p = a.allocate(n);
-    try {
-        boost::alloc_construct_n(a, boost::to_address(p), n);
-    } catch (...) {
-        a.deallocate(p, n);
-        throw;
-    }
-    return p;
-}
-```
-
-[endsect]
-
-[section Reference]
-
-```
-namespace boost {
-
-template<class A, class T>
-void alloc_destroy(A& a, T* p);
-
-template<class A, class T>
-void alloc_destroy_n(A& a, T* p, std::size_t n);
-
-template<class A, class T, class Args>
-void alloc_construct(A& a, T* p, Args&&... args);
-
-template<class A, class T>
-void alloc_construct_n(A& a, T* p, std::size_t n);
-
-template<class A, class T>
-void alloc_construct_n(A& a, T* p, std::size_t n, const T* l, std::size_t m);
-
-template<class A, class T, class I>
-void alloc_construct_n(A& a, T* p, std::size_t n, I begin);
-
-} /* boost */
-```
-
-[section Functions]
-
-[variablelist
-[[`template<class A, class T> void alloc_destroy(A& a, T* p);`]
-[[variablelist
-[[Requires][`A` is an /Allocator/]]
-[[Effects][`std::allocator_traits<A>::destroy(a, p)`.]]]]]
-[[`template<class A, class T> void alloc_destroy_n(A& a, T* p,
-std::size_t n);`]
-[[variablelist
-[[Requires][`A` is an /Allocator/]]
-[[Effects]
-[Destroys each `i`-th element in reverse order by calling
-`std::allocator_traits<A>::destroy(a, &p[i])`.]]]]]
-[[`template<class A, class T, class Args> void alloc_construct(A& a, T* p,
-Args&&... args);`]
-[[variablelist
-[[Requires][`A` is an /Allocator/]]
-[[Effects]
-[`std::allocator_traits<A>::construct(a, p, std::forward<Args>(args)...)`.]]]]]
-[[`template<class A, class T> void alloc_construct_n(A& a, T* p,
-std::size_t n);`]
-[[variablelist
-[[Requires][`A` is an /Allocator/]]
-[[Effects]
-[Constructs each `i`-th element in order by calling
-`std::allocator_traits<A>::construct(a, &p[i])`.]]
-[[Remarks]
-[If an exception is thrown destroys each already constructed `j`-th element in
-reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]
-[[`template<class A, class T> void alloc_construct_n(A& a, T* p, std::size_t n,
-const T* l, std::size_t m);`]
-[[variablelist
-[[Requires][`A` is an /Allocator/]]
-[[Effects]
-[Constructs each `i`-th element in order by calling
-`std::allocator_traits<A>::construct(a, &p[i], l[i % m])`.]]
-[[Remarks]
-[If an exception is thrown destroys each already constructed `j`-th element in
-reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]
-[[`template<class A, class T, class I> void alloc_construct_n(A& a, T* p,
-std::size_t n, I begin);`]
-[[variablelist
-[[Requires]
-[[itemized_list
-[`A` is an /Allocator/][`I` is an /InputIterator/]]]]
-[[Effects]
-[Constructs each `i`-th element in order by calling
-`std::allocator_traits<A>::construct(a, &p[i], *begin++])`.]]
-[[Remarks]
-[If an exception is thrown destroys each already constructed `j`-th element in
-reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]]
-
-[endsect]
-
-[endsect]
-
-[section Compatibility]
-
-When `BOOST_NO_CXX11_ALLOCATOR` is defined, and the C++11 allocator model is
-not supported, these functions invoke constructors and destructors directly
-without going through the supplied allocator.
-
-[endsect]
-
-[section Acknowledgments]
-
-Glen Fernandes originally implemented this functionality in Boost.Smart_Ptr and
-later moved these functions to Boost.Core for use in other Boost libraries,
-such as Boost.Multi_Array and Boost.Histogram.
-
-[endsect]
-
-[endsect]
--- a/doc/allocator_access.qbk
+++ b/doc/allocator_access.qbk
@@ -1,243 +0,0 @@
-[/
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-]
-
-[section Allocator Access]
-
-[simplesect Authors]
-
-* Glen Fernandes
-
-[endsimplesect]
-
-[section Overview]
-
-The header `<boost/core/allocator_access.hpp>` provides the class and function
-templates to simplify allocator use. It provides the same functionality as the
-C++ standard library `std::allocator_traits` but with individual templates for
-each allocator feature.
-
-These facilities also simplify existing libraries by avoiding having to check
-for `BOOST_NO_CXX11_ALLOCATOR` and conditionally use `std::allocator_traits`.
-
-[endsect]
-
-[section Examples]
-
-The following example shows these utilities used in the definition of
-an allocator-aware container class:
-
-```
-template<class T, class A = boost::default_allocator<T> >
-class container
-    : boost::empty_value<typename boost::allocator_rebind<A, T>::type> {
-public:
-    typedef T value_type;
-    typedef A allocator_type;
-    typedef typename boost::allocator_size_type<A>::type size_type;
-    typedef typename boost::allocator_difference_type<A>::type difference_type;
-    typedef value_type& reference;
-    typedef const value_type& const_reference;
-    typedef typename boost::allocator_pointer<A>::type pointer;
-    typedef typename boost::allocator_const_pointer<A>::type const_pointer;
-    // ...
-};
-```
-
-In C++11 or above, aliases such as `boost::allocator_pointer_t<A>` can be used
-instead of `typename boost::allocator_pointer<A>::type`.
-
-[endsect]
-
-[section Reference]
-
-```
-namespace boost {
-
-template<class A>
-struct allocator_value_type;
-
-template<class A>
-using allocator_value_type_t = typename allocator_value_type<A>::type;
-
-template<class A>
-struct allocator_pointer;
-
-template<class A>
-using allocator_pointer_t = typename allocator_pointer<A>::type;
-
-template<class A>
-struct allocator_const_pointer;
-
-template<class A>
-using allocator_const_pointer_t = typename allocator_const_pointer<A>::type;
-
-template<class A>
-struct allocator_void_pointer;
-
-template<class A>
-using allocator_void_pointer_t = typename allocator_void_pointer<A>::type;
-
-template<class A>
-struct allocator_const_void_pointer;
-
-template<class A>
-using allocator_const_void_pointer_t =
-    typename allocator_const_void_pointer<A>::type;
-
-template<class A>
-struct allocator_difference_type;
-
-template<class A>
-using allocator_difference_type_t =
-    typename allocator_difference_type<A>::type;
-
-template<class A>
-struct allocator_size_type;
-
-template<class A>
-using allocator_size_type_t = typename allocator_size_type<A>::type;
-
-template<class A>
-struct allocator_propagate_on_container_copy_assignment;
-
-template<class A>
-using allocator_propagate_on_container_copy_assignment_t =
-    typename allocator_propagate_on_container_copy_assignment<A>::type;
-
-template<class A>
-struct allocator_propagate_on_container_move_assignment;
-
-template<class A>
-using allocator_propagate_on_container_move_assignment_t =
-    typename allocator_propagate_on_container_move_assignment<A>::type;
-
-template<class A>
-struct allocator_propagate_on_container_swap;
-
-template<class A>
-using allocator_propagate_on_container_swap_t =
-    typename allocator_propagate_on_container_swap<A>::type;
-
-template<class A>
-struct allocator_is_always_equal;
-
-template<class A>
-using allocator_is_always_equal_t =
-    typename allocator_is_always_equal<A>::type;
-
-template<class A, class T>
-struct allocator_rebind;
-
-template<class A, class T>
-using allocator_rebind_t = typename allocator_rebind<A, T>::type;
-
-template<class A>
-allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n);
-
-template<class A>
-allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n,
-    allocator_const_void_pointer_t<A> h);
-
-template<class A>
-void allocator_deallocate(A& a, allocator_pointer_t<A> p,
-    allocator_size_type_t<A> n);
-
-template<class A, class T, class... Args>
-void allocator_construct(A& a, T* p, Args&&... args);
-
-template<class A, class T>
-void allocator_destroy(A& a, T* p);
-
-template<class A>
-allocator_size_type_t<A> allocator_max_size(const A& a);
-
-template<class A>
-A allocator_select_on_container_copy_construction(const A& a);
-
-} // boost
-```
-
-[section Types]
-
-[variablelist
-[[`template<class A> struct allocator_value_type;`]
-[The member `type` is `A::value_type`.]]
-[[`template<class A> struct allocator_pointer;`]
-[The member `type` is `A::pointer` if valid, otherwise `A::value_type*`.]]
-[[`template<class A> struct allocator_const_pointer;`]
-[The member `type` is `A::const_pointer` if valid, otherwise
-`pointer_traits<allocator_pointer_t<A> >::rebind<const
-allocator_value_type_t<A> >`.]]
-[[`template<class A> struct allocator_void_pointer;`]
-[The member `type` is `A::void_pointer` if valid, otherwise
-`pointer_traits<allocator_pointer_t<A> >::rebind<void>`.]]
-[[`template<class A> struct allocator_const_void_pointer;`]
-[The member `type` is `A::const_void_pointer` if valid, otherwise
-`pointer_traits<allocator_pointer_t<A> >::rebind<const void>`.]]
-[[`template<class A> struct allocator_difference_type;`]
-[The member `type` is `A::difference_type` if valid, otherwise
-`pointer_traits<allocator_pointer_t<A> >::difference_type`.]]
-[[`template<class A> struct allocator_size_type;`]
-[The member `type` is `A::size_type` if valid, otherwise
-`std::make_unsigned_t<allocator_difference_type_t<A> >`.]]
-[[`template<class A> struct allocator_propagate_on_container_copy_assignment;`]
-[The member `type` is `A::propagate_on_container_copy_assignment` if valid,
-otherwise `std::false_type`.]]
-[[`template<class A> struct allocator_propagate_on_container_move_assignment;`]
-[The member `type` is `A::propagate_on_container_move_assignment` if valid,
-otherwise `std::false_type`.]]
-[[`template<class A> struct allocator_propagate_on_container_swap;`]
-[The member `type` is `A::propagate_on_container_swap` if valid, otherwise
-`std::false_type`.]]
-[[`template<class A> struct allocator_is_always_equal;`]
-[The member `type` is `A::is_always_equal` if valid, otherwise
-`std::is_empty<A>::type`.]]
-[[`template<class A, class T> struct allocator_rebind;`]
-[The member `type` is `A::rebind<T>::other` if valid, otherwise `A<T, Args>`
-if this `A` is `A<U, Args>`.]]]
-
-[endsect]
-
-[section Functions]
-
-[variablelist
-[[`template<class A>
-allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n);`]
-[Calls `a.allocate(n)`.]]
-[[`template<class A> allocator_pointer_t<A> allocator_allocate(A& a,
-allocator_size_type_t<A> n, allocator_const_void_pointer_t<A> hint);`]
-[Calls `a.allocate(n, hint)` if valid, otherwise calls `a.allocate(n)`.]]
-[[`template<class A> void allocator_deallocate(A& a, allocator_pointer_t<A> p,
-allocator_size_type_t<A> n);`]
-[Calls `a.deallocate(p, n)`.]]
-[[`template<class A, class T, class... Args>
-void allocator_construct(A& a, T*p, Args&&... args);`]
-[Calls `a.construct(p, std::forward<Args>(args)...)` if valid, otherwise calls
-`::new(static_cast<void*>(p)) T(std::forward<Args>(args)...)`.]]
-[[`template<class A, class T> void allocator_destroy(A& a, T* p);`]
-[Calls `a.destroy(p)` if valid, otherwise calls `p->~T()`.]]
-[[`template<class A> allocator_size_type_t<A> allocator_max_size(const A& a);`]
-[Returns `a.max_size()` if valid, otherwise returns
-`std::numeric_limits<allocator_size_type_t<A> >::max() /
-sizeof(A::value_type)`.]]
-[[`template<class A> A allocator_select_on_container_copy_construction(const
-A& a);`]
-[Returns `a.select_on_container_copy_construction()` if valid, otherwise
-returns `a`.]]]
-
-[endsect]
-
-[endsect]
-
-[section Acknowledgments]
-
-Glen Fernandes implemented the allocator access utilities.
-
-[endsect]
-
-[endsect]
--- a/doc/bit.qbk
+++ b/doc/bit.qbk
@@ -1,203 +0,0 @@
-[/
-  Copyright 2020 Peter Dimov
-
-  Distributed under the Boost Software License, Version 1.0.
-
-  See accompanying file LICENSE_1_0.txt
-  or copy at http://boost.org/LICENSE_1_0.txt
-]
-
-[section:bit bit]
-
-[simplesect Authors]
-
-* Peter Dimov
-
-[endsimplesect]
-
-[section Header <boost/core/bit.hpp>]
-
-The header `<boost/core/bit.hpp>` implements, in a portable way,
-the C++20 `<bit>` header.
-
-[section Synopsis]
-
-``
-namespace boost
-{
-namespace core
-{
-
-// bit_cast
-
-template<class To, class From>
-To bit_cast(From const& from) noexcept;
-
-// Integral powers of 2
-
-template<class T>
-constexpr bool has_single_bit(T x) noexcept;
-
-template<class T>
-constexpr T bit_ceil(T x) noexcept;
-
-template<class T>
-constexpr T bit_floor(T x) noexcept;
-
-template<class T>
-constexpr T bit_width(T x) noexcept;
-
-// Rotating
-
-template<class T>
-constexpr T rotl(T x, int s) noexcept;
-
-template<class T>
-constexpr T rotr(T x, int s) noexcept;
-
-// Counting
-
-template<class T>
-constexpr int countl_zero(T x) noexcept;
-
-template<class T>
-constexpr int countl_one(T x) noexcept;
-
-template<class T>
-constexpr int countr_zero(T x) noexcept;
-
-template<class T>
-constexpr int countr_one(T x) noexcept;
-
-template<class T>
-constexpr int popcount(T x) noexcept;
-
-// Endian
-
-enum class endian
-{
-    little = see below,
-    big = see below,
-    native = see below
-};
-
-using endian_type = endian; // portable alias for C++03 code
-
-} // namespace core
-} // namespace boost
-``
-
-Note: even though the functions are shown as `constexpr` in the synopsis, since they are implemented
-via compiler-specific intrinsics, portable code cannot generally rely on their being usable in a
-constant expression context.
-
-[endsect]
-
-[section bit_cast]
-
-`template<class To, class From> To bit_cast(From const& from) noexcept;`
-
-* *Requires:* `To` and `From` must be trivially copyable and `sizeof(To)` must be the same as `sizeof(From)`.
-* *Returns:* A value of type `To` with the storage bytes copied from `from`.
-
-[endsect]
-
-[section Integral powers of 2]
-
-`template<class T> constexpr bool has_single_bit(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type (i.e. one of `unsigned char`, `unsigned short`, `unsigned int`, `unsigned long`, `unsigned long long`).
-* *Returns:* `true` if `x` is an integral power of two, `false` otherwise. (`has_single_bit(0u)` is false.)
-
-`template<class T> constexpr T bit_ceil(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* The smallest integral power of 2 greater than or equal to `x`. If this value is not representable in `T`, behavior is undefined.
-
-`template<class T> constexpr T bit_floor(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* If `x == 0`, 0; otherwise the maximal value `y` such that `has_single_bit(y)` is `true` and `y <= x`.
-
-`template<class T> constexpr T bit_width(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* If `x == 0`, 0; otherwise one plus the base-2 logarithm of `x`, with any fractional part discarded.
-
-[endsect]
-
-[section Rotating]
-
-In the following descriptions, `N` denotes `numeric_limits<T>::digits` and `r` denotes `s % N`.
-
-`template<class T> constexpr T rotl(T x, int s) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* If `s` is negative, `rotr(x, -s)`; if `r` is 0, `x`; if `r` is positive, `(x << r) | (x >> (N - r))`.
-
-`template<class T> constexpr T rotr(T x, int s) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* If `s` is negative, `rotl(x, -s)`; if `r` is 0, `x`; if `r` is positive, `(x >> r) | (x << (N - r))`.
-
-[endsect]
-
-[section Counting]
-
-`template<class T> constexpr int countl_zero(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* The number of consecutive 0 bits in the value of `x`, starting from the most significant ("left") bit.
-
-`template<class T> constexpr int countl_one(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* The number of consecutive 1 bits in the value of `x`, starting from the most significant bit.
-
-`template<class T> constexpr int countr_zero(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* The number of consecutive 0 bits in the value of `x`, starting from the least significant ("right") bit.
-
-`template<class T> constexpr int countr_one(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* The number of consecutive 1 bits in the value of `x`, starting from the least significant bit.
-
-`template<class T> constexpr int popcount(T x) noexcept;`
-
-* *Requires:* `T` must be an unsigned integer type.
-* *Returns:* The number of 1 bits in the value of `x`.
-
-[endsect]
-
-[section Endian]
-
-Under C++11, `endian` is defined as `enum class endian` as shown in the synopsis. Under C++03, its definition is
-
-``
-namespace endian
-{
-enum type
-{
-    little = see below,
-    big = see below,
-    native = see below
-};
-}
-
-typedef endian::type endian_type;
-``
-
-The values of `endian::big` and `endian::little` are distinct. `endian::native` is equal to `endian::big` on
-big endian platforms, equal to `endian::little` on little endian platforms, and a distinct value on platforms
-that are neither.
-
-Note that you should not rely on `little` and `big` having any specific values, because the C++20 standard
-leaves these unspecified.
-
-[endsect]
-
-[endsect]
-
-[endsect]
--- a/doc/changes.qbk
+++ b/doc/changes.qbk
@@ -1,88 +0,0 @@
-[/
-  Copyright 2021 Peter Dimov
-  Distributed under the Boost Software License, Version 1.0.
-  https://boost.org/LICENSE_1_0.txt)
-]
-
-[section Revision History]
-
-[section Changes in 1.78.0]
-
-* Added a generic implementation to `boost/core/cmath.hpp`, enabled when `BOOST_CORE_USE_GENERIC_CMATH`
-  is defined or when the platform does not provide the necessary facilities in `<cmath>`.
-* Added `boost::core::type_name`.
-
-[endsect]
-
-[section Changes in 1.77.0]
-
-* `boost/core/uncaught_exceptions.hpp` has been modified for compatibility with Mac OS 10.4 and older.
-
-[endsect]
-
-[section Changes in 1.76.0]
-
-* Add implicit conversion between compatible reference wrappers.
-* Add `boost/core/cmath.hpp`, a portable implementation of the floating point classification functions from `<cmath>`.
-* Add `boost/core/bit.hpp`, a portable implementation of the C++20 standard header `<bit>`.
-* Fix `BOOST_TEST_EQ`, `BOOST_TEST_NE` for character types under C++20.
-* Revise allocator access utilities (now support VS2013, and no workarounds use `allocator_traits`.)
-
-[endsect]
-
-[section Changes in 1.74.0]
-
-* Implemented the allocator access utilities which provide a replacement for `allocator_traits`
-  with individual traits and functions for each facility. They support the C++11 allocator model
-  when possible and provide a fallback for C++98 compatibility.
-
-[endsect]
-
-[section Changes in 1.71.0]
-
-* Added functions `alloc_construct`, `alloc_construct_n`, `alloc_destroy`, and `alloc_destroy_n`
-  in `<boost/core/alloc_construct.hpp>` for allocator aware and exception safe construction and
-  destruction of objects and arrays.
-* Added constexpr functions `first_scalar` in `<boost/core/first_scalar.hpp>` for obtaining a pointer
-  to the first scalar element of an array. Given a pointer of type `T*` they return a pointer of type
-  `remove_all_extents_t<T>*`.
-* Added class template `noinit_adaptor` in `<boost/core/noinit_adaptor.hpp>` which is an allocator adaptor
-  that converts any allocator into one whose `construct(ptr)` performs default initialization via placement
-  `new`, and whose `destroy(ptr)` invokes the `value_type` destructor directly.
-* Added class template `default_allocator` in `<boost/core/default_allocator.hpp>`, which can serve as a minimal
-  default allocator that has interface similar to C++20 `std::allocator`, supports configurations with disabled
-  exceptions and does not have `std` as an associated namespace. The allocator uses `operator new` and
-  `operator delete` for allocation.
-* In `<boost/core/uncaught_exceptions.hpp>` header, added workarounds for better compatibility with QNX SDP 7.0
-  when libc++/libc++abi libraries are used.
-* The `<boost/detail/sp_typeinfo.hpp>` header is now marked as deprecated and will be removed in a future release.
-  `<boost/core/typeinfo.hpp>` should be used instead.
-
-[endsect]
-
-[section Changes in 1.69.0]
-
-* Implemented `boost::empty_value`, for library authors to conveniently leverage the Empty Base Optimization to
-  store objects of potentially empty types.
-* Implemented `boost::quick_exit` to provide the C++11 standard library facility `std::quick_exit` functionality.
-* Reduced the number of statics in Lightweight Test, and employ lighter abort behavior for MSVC compilers upon
-  failure to call `boost::report_errors`.
-
-[endsect]
-
-[section Changes in 1.67.0]
-
-* Updated `to_address` and `pointer_traits` to reflect the design adopted for C++20 in
-  [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r2.html P0653R2].
-
-[endsect]
-
-[section Changes in 1.65.0]
-
-* Implemented `pointer_traits` for C++03 and higher, that implements
-  [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r0.html P0653r0].
-* Added `BOOST_TEST_GT` and `BOOST_TEST_GE` to Lightweight Test.
-
-[endsect]
-
-[endsect]
--- a/doc/cmath.qbk
+++ b/doc/cmath.qbk
@@ -1,122 +0,0 @@
-[/
-  Copyright 2018 Peter Dimov
-
-  Distributed under the Boost Software License, Version 1.0.
-
-  See accompanying file LICENSE_1_0.txt
-  or copy at http://boost.org/LICENSE_1_0.txt
-]
-
-[section:cmath cmath]
-
-[simplesect Authors]
-
-* Peter Dimov
-
-[endsimplesect]
-
-[section Header <boost/core/cmath.hpp>]
-
-The header `<boost/core/cmath.hpp>` defines, in a portable way, the floating
-point classification and sign manipulation functions from C++11.
-
-[section Synopsis]
-
-``
-namespace boost
-{
-namespace core
-{
-
-// fpclassify return values
-
-int const fp_zero = /*unspecified*/;
-int const fp_subnormal = /*unspecified*/;
-int const fp_normal = /*unspecified*/;
-int const fp_infinite = /*unspecified*/;
-int const fp_nan = /*unspecified*/;
-
-// Classification functions
-
-template<class T> bool isfinite( T x );
-template<class T> bool isnan( T x );
-template<class T> bool isinf( T x );
-template<class T> bool isnormal( T x );
-template<class T> int fpclassify( T x );
-
-// Sign manipulation functions
-
-template<class T> bool signbit( T x );
-template<class T> T copysign( T x, T y );
-
-} // namespace core
-} // namespace boost
-``
-
-[endsect]
-
-[section Classification Functions]
-
-[section template<class T> bool isfinite( T x );]
-
-* *Requires:* `T` must be `float`, `double`, or `long double`.
-* *Returns:* `true` when `x` is finite (not infinity or NaN), `false` otherwise.
-
-[endsect]
-
-[section template<class T> bool isnan( T x );]
-
-* *Requires:* `T` must be `float`, `double`, or `long double`.
-* *Returns:* `true` when `x` is NaN, `false` otherwise.
-
-[endsect]
-
-[section template<class T> bool isinf( T x );]
-
-* *Requires:* `T` must be `float`, `double`, or `long double`.
-* *Returns:* `true` when `x` is infinity, `false` otherwise.
-
-[endsect]
-
-[section template<class T> bool isnormal( T x );]
-
-* *Requires:* `T` must be `float`, `double`, or `long double`.
-* *Returns:* `true` when `x` is a normal number (not zero, subnormal, infinity, or NaN), `false` otherwise.
-
-[endsect]
-
-[section template<class T> int fpclassify( T x );]
-
-* *Requires:* `T` must be `float`, `double`, or `long double`.
-* *Returns:*
-  * `fp_zero` when `x` is zero;
-  * `fp_subnormal` when `x` is subnormal;
-  * `fp_infinite` when `x` is infinity;
-  * `fp_nan` when `x` is NaN;
-  * `fp_normal` otherwise.
-
-[endsect]
-
-[endsect]
-
-[section Sign Manipulation Functions]
-
-[section template<class T> bool signbit( T x );]
-
-* *Requires:* `T` must be `float`, `double`, or `long double`.
-* *Returns:* `true` when `x` is negative, `false` otherwise.
-
-[endsect]
-
-[section template<class T> bool copysign( T x, T y );]
-
-* *Requires:* `T` must be `float`, `double`, or `long double`.
-* *Returns:* `x` with the sign copied from `y`.
-
-[endsect]
-
-[endsect]
-
-[endsect]
-
-[endsect]
--- a/doc/core.qbk
+++ b/doc/core.qbk
@@ -38,35 +38,23 @@ criteria for inclusion is that the utility component be:

 [endsect]

-[include changes.qbk]
-
 [include addressof.qbk]
-[include allocator_access.qbk]
-[include alloc_construct.qbk]
-[include bit.qbk]
 [include checked_delete.qbk]
-[include cmath.qbk]
-[include default_allocator.qbk]
 [include demangle.qbk]
 [include empty_value.qbk]
 [include enable_if.qbk]
 [include exchange.qbk]
 [include explicit_operator_bool.qbk]
-[include first_scalar.qbk]
 [include ignore_unused.qbk]
 [include is_same.qbk]
 [include lightweight_test.qbk]
 [include no_exceptions_support.qbk]
-[include noinit_adaptor.qbk]
 [include noncopyable.qbk]
 [include null_deleter.qbk]
-[include nvp.qbk]
 [include pointer_traits.qbk]
 [include quick_exit.qbk]
 [include ref.qbk]
 [include scoped_enum.qbk]
 [include swap.qbk]
 [include typeinfo.qbk]
-[include type_name.qbk]
 [include uncaught_exceptions.qbk]
-[include use_default.qbk]
--- a/doc/default_allocator.qbk
+++ b/doc/default_allocator.qbk
@@ -1,140 +0,0 @@
-[/
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-]
-
-[section:default_allocator default_allocator]
-
-[simplesect Authors]
-
-* Glen Fernandes
-
-[endsimplesect]
-
-[section Overview]
-
-The header <boost/core/default_allocator.hpp> provides the class template
-`boost::default_allocator` to serve as a minimal default allocator that:
-
-* Like C++2a's `std::allocator`, does not provide members such as `construct()`
-and `destroy()` to be eligible for optimizations by allocator-aware code that
-detects the absence of these members to provide more optimal construction.
-* Supports `BOOST_NO_EXCEPTIONS` in allocation.
-* Does not have `std` as an associated namespace.
-
-[endsect]
-
-[section Examples]
-
-The following snippet shows the use of this allocator as the default allocator
-for a container.
-
-```
-template<class Key, class Compare = std::less<Key>,
-    class Allocator = boost::default_allocator<Key> >
-class FlatSet;
-```
-
-Facilities like `make_shared` can be implemented using `allocate_shared` with
-`default_allocator`.
-
-```
-template<class T, class... Args>
-enable_if_t<!is_array_v<T>, shared_ptr<T> >
-make_shared(Args&&... args)
-{
-    return allocate_shared<T>(boost::default_allocator<remove_cv_t<T> >(),
-        std::forward<Args>(args)...);
-}
-```
-
-[endsect]
-
-[section Reference]
-
-```
-namespace boost {
-
-template<class T>
-struct default_allocator {
-    typedef T value_type;
-    typedef T* pointer;
-    typedef const T* const_pointer;
-    typedef std::add_lvalue_reference_t<T> reference;
-    typedef std::add_lvalue_reference_t<const T> const_reference;
-    typedef std::size_t size_type;
-    typedef std::ptrdiff_t difference_type;
-    typedef ``['true_type]`` propagate_on_container_move_assignment;
-    typedef ``['true_type]`` is_always_equal;
-
-    template<class U>
-    struct rebind {
-        typedef default_allocator<U> other;
-    };
-
-    constexpr default_allocator() = default;
-
-    template<class U>
-    constexpr default_allocator(const default_allocator<U>&) noexcept { }
-
-    constexpr std::size_t max_size() const noexcept;
-    T* allocate(std::size_t n);
-    void deallocate(T* p, std::size_t);
-};
-
-template<class T, class U>
-constexpr bool operator==(const default_allocator<T>&,
-    const default_allocator<U>&) noexcept;
-
-template<class T, class U>
-constexpr bool operator!=(const default_allocator<T>&,
-    const default_allocator<U>&) noexcept;
-
-} /* boost */
-```
-
-[section Members]
-
-[variablelist
-[[`constexpr std::size_t max_size() const noexcept;`]
-[[variablelist
-[[Returns][The largest value `N` for which the call `allocate(N)` might
-succeed.]]]]]
-[[`T* allocate(std::size_t n);`]
-[[variablelist
-[[Returns]
-[A pointer to the initial element of an array of storage of size
-`n * sizeof(T)`, aligned appropriately for objects of type `T`.]]
-[[Remarks][The storage is obtained by calling `::operator new`.]]
-[[Throws][`std::bad_alloc` if the storage cannot be obtained.]]]]]
-[[`void deallocate(T* p, std::size_t n);`]
-[[variablelist
-[[Requires]
-[`p` shall be a pointer value obtained from `allocate()`. `n` shall equal the
-value passed as the first argument to the invocation of `allocate` which
-returned `p`.]]
-[[Effects][Deallocates the storage referenced by `p`.]]
-[[Remarks][Uses `::operator delete`.]]]]]]
-
-[endsect]
-
-[section Operators]
-
-[variablelist
-[[`template<class T, class U> constexpr bool operator==(const
-default_allocator<T>&, const default_allocator<U>&) noexcept;`]
-[[variablelist
-[[Returns][`true`.]]]]]
-[[`template<class T, class U> constexpr bool operator!=(const
-default_allocator<T>&, const default_allocator<U>&) noexcept;`]
-[[variablelist
-[[Returns][`false`.]]]]]]
-
-[endsect]
-
-[endsect]
-
-[endsect]
--- a/doc/empty_value.qbk
+++ b/doc/empty_value.qbk
@@ -90,15 +90,13 @@ public:
    empty_value() = default;

    template<class... Args>
-    empty_value(empty_init_t, Args&&... args);
+    explicit empty_value(empty_init_t, Args&&... args);

    const T& get() const noexcept;

    T& get() noexcept;
 };

-inline constexpr empty_init_t empty_init{ };
-
 } /* boost */
 ```

@@ -113,8 +111,7 @@ inline constexpr empty_init_t empty_init{ };

 [section Member types]

-[variablelist
-[[`type`][The template parameter `T`]]]
+[variablelist [[`type`][The template parameter `T`]]]

 [endsect]

--- a/doc/exchange.qbk
+++ b/doc/exchange.qbk
@@ -18,8 +18,7 @@ Distributed under the Boost Software License, Version 1.0.

 The header <boost/core/exchange.hpp> provides the function template
 `boost::exchange` which is an implementation of the `std::exchange`
-function introduced in C++14. `boost::exchange(o, v)` replaces the
-value of `o` with `v` and returns the old value of `o`.
+function introduced in C++14.

 [endsect]

--- a/doc/first_scalar.qbk
+++ b/doc/first_scalar.qbk
@@ -1,91 +0,0 @@
-[/
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-]
-
-[section:first_scalar first_scalar]
-
-[simplesect Authors]
-
-* Glen Fernandes
-
-[endsimplesect]
-
-[section Overview]
-
-The header <boost/core/first_scalar.hpp> provides the function templates
-`boost::first_scalar` that can be used to obtain a pointer to the first scalar
-element of an array. Given a pointer of type `T*` they return a pointer of
-type `remove_all_extents_t<T>*`. The functions are `constexpr` and can be used
-in constant expressions.
-
-[endsect]
-
-[section Examples]
-
-The following function uses an allocator to allocate an array of arrays and
-constructs each scalar element in it.
-
-```
-#include <boost/alloc_construct.hpp>
-#include <boost/first_scalar.hpp>
-
-template<class A>
-auto create(const A& allocator)
-{
-    typename std::allocator_traits<A>::template
-        rebind_alloc<int[2][3]> other(allocator);
-    auto ptr = other.allocate(4);
-    try {
-        boost::alloc_construct_n(other,
-            boost::first_scalar(boost::to_address(ptr)), 24);
-    } catch (...) {
-        other.deallocate(ptr, 4);
-        throw;
-    }
-    return ptr;
-}
-```
-
-[endsect]
-
-[section Reference]
-
-```
-namespace boost {
-
-template<class T>
-constexpr T* first_scalar(T* p) noexcept;
-
-template<class T, std::size_t N>
-constexpr auto first_scalar(T (*p)[N]) noexcept;
-
-} /* boost */
-```
-
-[section Functions]
-
-[variablelist
-[[`template<class T> constexpr T* first_scalar(T* p) noexcept;`]
-[[variablelist
-[[Returns][`p`.]]]]]
-[[`template<class T, std::size_t N> constexpr auto first_scalar(T (*p)[N])
-noexcept;`]
-[[variablelist
-[[Returns][`first_scalar(&(*p)[0])`.]]]]]]
-
-[endsect]
-
-[endsect]
-
-[section History]
-
-Glen Fernandes implemented `first_scalar`. Peter Dimov suggested a change for
-GCC to support an additional `constexpr` use.
-
-[endsect]
-
-[endsect]
--- a/doc/lightweight_test.qbk
+++ b/doc/lightweight_test.qbk
@@ -1,7 +1,7 @@
 [/
  Copyright 2010, 2011 Beman Dawes
  Copyright 2013 Ion Gaztanaga
-  Copyright 2014-2019 Peter Dimov
+  Copyright 2014, 2017 Peter Dimov
  Copyright 2017 Kohei Takahashi

  Distributed under the Boost Software License, Version 1.0.
@@ -43,11 +43,9 @@ When using `lightweight_test.hpp`, *do not forget* to
 #define BOOST_TEST_GE(expr1, expr2) /*unspecified*/
 #define BOOST_TEST_CSTR_EQ(expr1, expr2) /*unspecified*/
 #define BOOST_TEST_CSTR_NE(expr1, expr2) /*unspecified*/
-#define BOOST_TEST_WITH(expr1, expr2, pred) /*unspecified*/
 #define BOOST_TEST_ALL_EQ(begin1, end1, begin2, end2) /* unspecified */
 #define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) /* unspecified */
 #define BOOST_TEST_THROWS(expr, excep) /*unspecified*/
-#define BOOST_TEST_NO_THROW(expr) /*unspecified*/

 namespace boost
 {
@@ -176,17 +174,6 @@ Specialization of `BOOST_TEST_NE` which interprets `expr1` and `expr2` as pointe

 [endsect]

-[section BOOST_TEST_WITH]
-
-``
-BOOST_TEST_WITH(expr1, expr2, pred)
-``
-
-If `pred(expr1, expr2)` is not true increases the error count and outputs a
-message containing both expressions.
-
-[endsect]
-
 [section BOOST_TEST_ALL_EQ]

 ``
@@ -222,20 +209,6 @@ nothing and `expr` is not evaluated.

 [endsect]

-[section BOOST_TEST_NO_THROW]
-
-``
-BOOST_TEST_NO_THROW(expr)
-``
-
-If `BOOST_NO_EXCEPTIONS` is *not* defined and if `expr` throws an exception,
-increases the error count and outputs a message containing the expression
-and (if possible) the exception message.
-
-If `BOOST_NO_EXCEPTIONS` is defined, `expr` is evaluated.
-
-[endsect]
-
 [section report_errors]

 ``
@@ -280,7 +253,6 @@ return a boolean value.
 ``
 #define BOOST_TEST_TRAIT_TRUE((Trait)) /*unspecified*/
 #define BOOST_TEST_TRAIT_FALSE((Trait)) /*unspecified*/
-#define BOOST_TEST_TRAIT_SAME(Type1, Type2) /*unspecified*/
 ``

 [endsect]
@@ -308,20 +280,6 @@ message containing `Trait`. Note the double set of parentheses.

 [endsect]

-[section BOOST_TEST_TRAIT_SAME]
-
-``
-BOOST_TEST_TRAIT_SAME(Type1, Type2)
-``
-
-If the two types are not the same, increases the error count and outputs a
-message containing them. This macro requires that the compiler supports
-variadic macros and `__VA_ARGS__`. (Note that unlike `BOOST_TEST_TRAIT_TRUE`
-and `BOOST_TEST_TRAIT_FALSE`, this macro only requires a single set of
-parentheses.)
-
-[endsect]
-
 [section Example]

 ``
@@ -339,8 +297,6 @@ int main()
 {
    BOOST_TEST_TRAIT_TRUE(( is_same<X<int, long>::type, int> ));

-    BOOST_TEST_TRAIT_SAME( X<int, long>::type, int );
-
    return boost::report_errors();
 }
 ``
--- a/doc/noinit_adaptor.qbk
+++ b/doc/noinit_adaptor.qbk
@@ -1,163 +0,0 @@
-[/
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-]
-
-[section:noinit_adaptor noinit_adaptor]
-
-[simplesect Authors]
-
-* Glen Fernandes
-
-[endsimplesect]
-
-[section Overview]
-
-The header <boost/core/noinit_adaptor.hpp> provides the class
-template `boost::noinit_adaptor` that converts any allocator into
-one whose `construct(ptr)` performs default initialization via placement new,
-and whose `destroy(ptr)` invokes `value_type` destructor directly.
-
-[endsect]
-
-[section Examples]
-
-The following example shows use of this allocator adaptor to achieve default
-initialization of elements of a trivial type, which are later assigned values.
-
-```
-#include <boost/core/noinit_adaptor.hpp>
-#include <numeric>
-#include <vector>
-
-int main()
-{
-    std::vector<int, boost::noinit_adaptor<std::allocator<int> > > v(5);
-    std::iota(v.begin(), v.end(), 1);
-}
-```
-
-The `allocate_shared_noinit` function templates are now implemented simply
-using `allocate_shared` with `noinit_adaptor`.
-
-```
-template<class T, class A>
-enable_if_t<is_unbounded_array_v<T>, shared_ptr<T> >
-allocate_shared_noinit(const A& a, size_t n)
-{
-    return allocate_shared<T>(boost::noinit_adapt(a), n);
-}
-
-template<class T, class A>
-enable_if_t<!is_unbounded_array_v<T>, shared_ptr<T> >
-allocate_shared_noinit(const A& a)
-{
-    return allocate_shared<T>(boost::noinit_adapt(a));
-}
-```
-
-[endsect]
-
-[section Reference]
-
-```
-namespace boost {
-
-template<class A>
-struct noinit_adaptor
-    : A {
-    template<class U>
-    struct rebind {
-        typedef noinit_adaptor<allocator_rebind_t<A, U> > other;
-    };
-
-    noinit_adaptor() noexcept;
-
-    template<class U>
-    noinit_adaptor(U&& u) noexcept;
-
-    template<class U>
-    noinit_adaptor(const noinit_adaptor<U>& u) noexcept;
-
-    template<class U>
-    void construct(U* p);
-
-    template<class U>
-    void destroy(U* p);
-};
-
-template<class T, class U>
-bool operator==(const noinit_adaptor<T>& lhs,
-    const noinit_adaptor<U>& rhs) noexcept;
-
-template<class T, class U>
-bool operator!=(const noinit_adaptor<T>& lhs,
-    const noinit_adaptor<U>& rhs) noexcept;
-
-template<class A>
-noinit_adaptor<A> noinit_adapt(const A& a) noexcept;
-
-} /* boost */
-```
-
-[section Constructors]
-
-[variablelist
-[[`noinit_adaptor() noexcept;`]
-[[variablelist
-[[Effects][Value initializes the A base class.]]]]]
-[[`template<class U> noinit_adaptor(U&& u) noexcept;`]
-[[variablelist
-[[Requires][`A` shall be constructible from `U`.]]
-[[Effects][Initializes the `A` base class with `std::forward<U>(u)`.]]]]]
-[[`template<class U> noinit_adaptor(const noinit_adaptor<U>& u) noexcept;`]
-[[variablelist
-[[Requires][`A` shall be constructible from `U`.]]
-[[Effects][Initializes the `A` base class with
-`static_cast<const A&>(u)`.]]]]]]
-
-[endsect]
-
-[section Member functions]
-
-[variablelist
-[[`template<class U> void construct(U* p);`]
-[[variablelist
-[[Effects][`::new((void*)p) U`.]]]]]
-[[`template<class U> void destroy(U* p);`]
-[[variablelist
-[[Effects][`p->~U()`.]]]]]]
-
-[endsect]
-
-[section Operators]
-
-[variablelist
-[[`template<class T, class U> constexpr bool
-operator==(const noinit_adaptor<T>& lhs,
-const noinit_adaptor<U>& rhs) noexcept;`]
-[[variablelist
-[[Returns][`static_cast<const T&>(lhs) == static_cast<const U&>(rhs)`.]]]]]
-[[`template<class T, class U> constexpr bool
-operator!=(const noinit_adaptor<T>& lhs,
-const noinit_adaptor<U>& rhs) noexcept;`]
-[[variablelist
-[[Returns][`!(lhs == rhs)`.]]]]]]
-
-[endsect]
-
-[section Free functions]
-
-[variablelist
-[[`template<class A> noinit_adaptor<A> noinit_adapt(const A& a) noexcept;`]
-[[variablelist
-[[Returns][`noinit_adaptor<A>(a)`.]]]]]]
-
-[endsect]
-
-[endsect]
-
-[endsect]
--- a/doc/nvp.qbk
+++ b/doc/nvp.qbk
@@ -1,108 +0,0 @@
-[/
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-]
-
-[section:nvp nvp]
-
-[section Overview]
-
-The header <boost/core/nvp.hpp> provides the class template `boost::nvp` that
-pairs a name (`const char*`) with the address of a value (`T*`). It is the new
-implementation of the NVP type previously provided by the Boost Serialization
-library. This type now lives in the Core library so that other Boost libraries
-can support named value serialization without taking a dependency on the
-Serialization library.
-
-[endsect]
-
-[section Examples]
-
-The following snippet shows use in a member serialize function:
-
-```
-template<class A>
-void serialize(A& archive, unsigned)
-{
-    archive & boost::make_nvp("x", x_) & boost::make_nvp("y", y_);
-}
-```
-
-[endsect]
-
-[section Reference]
-
-```
-namespace boost {
-
-template<class T>
-class nvp {
-public:
-    nvp(const char* name, T& value) noexcept;
-
-    const char* name() const noexcept;
-
-    T& value() const noexcept;
-
-    const T& const_value() const noexcept;
-};
-
-template<class T>
-const nvp<T> make_nvp(const char* name, T& value) noexcept;
-
-} /* boost */
-
-#define BOOST_NVP(object) ``['see below]``
-```
-
-[section Constructors]
-
-[variablelist
-[[`nvp(const char* name, T& value) noexcept;`]
-[Initializes the stored name pointer with `name` and the value pointer with
-`addressof(value)`.]]]
-
-[endsect]
-
-[section Members]
-
-[variablelist
-[[`const char* name() const noexcept;`]
-[Returns a pointer to the name.]]
-[[`T& value() const noexcept;`]
-[Returns a reference to the value.]]
-[[`const T& const_value() const noexcept;`]
-[Returns a reference to the value.]]]
-
-[endsect]
-
-[section Functions]
-
-[variablelist
-[[`template<class T> const nvp<T> make_nvp(const char* name, T& value)
-noexcept;`]
-[Returns `nvp<T>(name, value)`.]]]
-
-[endsect]
-
-[section Macros]
-
-[variablelist
-[[`#define BOOST_NVP(object) see below`]
-[Expands to `boost::make_nvp(BOOST_STRINGIZE(object), object)`.]]]
-
-[endsect]
-
-[endsect]
-
-[section History]
-
-Robert Ramey originally implemented NVP in the Serialization library. Glen
-Fernandes implemented this new (but compatible) version in the Core library.
-
-[endsect]
-
-[endsect]
--- a/doc/pointer_traits.qbk
+++ b/doc/pointer_traits.qbk
@@ -109,7 +109,7 @@ namespace boost {
 [[Remark]
 [If `element_type` is a void type, the type of `v` is unspecified; otherwise,
  it is `element_type&`.]]
-[[Returns][`addressof(v)`.]]]]]]
+[[Returns] [`addressof(v)`.]]]]]]

 [endsect]

@@ -131,11 +131,9 @@ namespace boost {

 [variablelist
 [[`template<class T> constexpr T* to_address(T* v) noexcept;`]
-[[variablelist
-[[Returns][`v`.]]]]]
+[[variablelist [[Returns] [`v`.]]]]]
 [[`template<class T> auto to_address(const T& v) noexcept;`]
-[[variablelist
-[[Returns][`pointer_traits<T>::to_address(v)` if that
+[[variablelist [[Returns] [`pointer_traits<T>::to_address(v)` if that
  expression is well-formed, otherwise `to_address(v.operator->())`.]]]]]]

 [endsect]
--- a/doc/scoped_enum.qbk
+++ b/doc/scoped_enum.qbk
@@ -67,9 +67,9 @@ The enumeration can be forward declared:

    BOOST_SCOPED_ENUM_FORWARD_DECLARE(future_errc);

-There are however some limitations. The emulated scoped enum is not a C++ enum, so `is_enum< future_errc >` will be `false_type`.
+There are however some limitations. First, the emulated scoped enum is not a C++ enum, so `is_enum< future_errc >` will be `false_type`.

-The emulated scoped enum can not be used in switch nor in template arguments. For these cases the user needs to use some helpers. Instead of
+Second, the emulated scoped enum can not be used in switch nor in template arguments. For these cases the user needs to use some helpers. Instead of

    switch (ev)
    {
@@ -99,29 +99,10 @@ use
    {
    };

-Explicit conversion to the underlying type should be performed with `boost::underlying_cast` instead of `static_cast`:
+Lastly, explicit conversion to the underlying type should be performed with `boost::underlying_cast` instead of `static_cast`:

    unsigned int val = boost::underlying_cast< unsigned int >(ev);

-In C++03, scoped enums behave differently in case of calling an overloaded function when one overload takes a scoped enum as a parameter, and the other takes a parameter of an integral type. Consider the following code:
-
-    enum enum_regular { REGULAR_A, REGULAR_B };
-
-    BOOST_SCOPED_ENUM_DECLARE_BEGIN(enum_scoped)
-    {
-        a, b
-    }
-    BOOST_SCOPED_ENUM_DECLARE_END(enum_scoped)
-
-    void regular_or_int(enum_regular); // (1)
-    void regular_or_int(int);          // (2)
-    void scoped_or_int(enum_scoped);   // (3)
-    void scoped_or_int(int);           // (4)
-
-    regular_or_int(REGULAR_A);                  // calls (1) in C++03 and C++11
-    scoped_or_int(enum_scoped::a);              // calls (3) in C++11 but (4) in C++03!
-    scoped_or_int(enum_scoped(enum_scoped::a)); // calls (3) in C++03 and C++11
-
 Here is usage example:

    BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(algae, char)
--- a/doc/type_name.qbk
+++ b/doc/type_name.qbk
@@ -1,77 +0,0 @@
-[/
-  Copyright 2021 Peter Dimov
-  Distributed under the Boost Software License, Version 1.0.
-  https://boost.org/LICENSE_1_0.txt
-]
-
-[section:type_name type_name]
-
-[simplesect Authors]
-
-* Peter Dimov
-
-[endsimplesect]
-
-[section Header <boost/core/type_name.hpp>]
-
-The header `<boost/core/type_name.hpp>` defines the function
-template `boost::core::type_name<T>()` that returns a string
-representation of the name of `T`, suitable for logging or
-diagnostic display purposes.
-
-The result is similar to `boost::core::demangle( typeid(T).name() )`,
-but it's made more regular by eliminating some of the platform-specific
-differences and extra template parameters of the standard library
-container types.
-
-For example, `type_name< std::map<std::string, int> >()` returns
-`"std::map<std::string, int>"` and not
-
-```
-  std::map<std::__cxx11::basic_string<char, std::char_traits<char>,
-    std::allocator<char> >, int, std::less<std::__cxx11::basic_string<char,
-    std::char_traits<char>, std::allocator<char> > >, std::allocator<
-    std::pair<std::__cxx11::basic_string<char, std::char_traits<char>,
-    std::allocator<char> > const, int> > >
-```
-
-or
-
-```
-  class std::map<class std::basic_string<char,struct std::char_traits<char>,
-    class std::allocator<char> >,int,struct std::less<class std::basic_string<
-    char,struct std::char_traits<char>,class std::allocator<char> > >,class
-    std::allocator<struct std::pair<class std::basic_string<char,struct
-    std::char_traits<char>,class std::allocator<char> > const ,int> > >
-```
-
-The return values aren't guaranteed to be stable across Boost releases.
-
-Compilation with `-fno-rtti` is supported, but the returned type names aren't
-guaranteed to be particularly useful or unique.
-
-[section Synopsis]
-
-``
-namespace boost
-{
-namespace core
-{
-
-template<class T> std::string type_name();
-
-} // namespace core
-} // namespace boost
-``
-
-[endsect]
-
-[section template<class T> std::string type_name();]
-
-* *Returns:* A string representation of the name of `T`.
-
-[endsect]
-
-[endsect]
-
-[endsect]
--- a/doc/use_default.qbk
+++ b/doc/use_default.qbk
@@ -1,47 +0,0 @@
-[/
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-]
-
-[section:use_default use_default]
-
-[section Overview]
-
-The header <boost/core/use_default.hpp> provides the type `boost::use_default`
-which is used by other Boost libraries as a sentinel type in a templates to
-indicate defaults.
-
-[endsect]
-
-[section Example]
-
-```
-template<class Derived, class Base,
-   class Value = boost::use_default,
-   class CategoryOrTraversal = boost::use_default,
-   class Reference = boost::use_default,
-   class Difference = boost::use_default>
-class iterator_adaptor;
-
-template<class Value>
-class node_iterator
-    : public iterator_adaptor<node_iterator<Value>, Value*,
-        boost::use_default, boost::forward_traversal_tag>;
-```
-
-[endsect]
-
-[section Reference]
-
-```
-namespace boost {
-  struct use_default { };
-}
-```
-
-[endsect]
-
-[endsect]
--- a/include/boost/core/addressof.hpp
+++ b/include/boost/core/addressof.hpp
@@ -125,7 +125,7 @@ template<class T>
 BOOST_FORCEINLINE T*
 addressof(T& o) BOOST_NOEXCEPT
 {
-#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x610)) || \
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x610)) || \
    BOOST_WORKAROUND(__SUNPRO_CC, <= 0x5120)
    return boost::detail::addrof<T>::get(o, 0);
 #else
@@ -151,7 +151,7 @@ addressof(T (&o)[N]) BOOST_NOEXCEPT
 }
 #endif

-#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
 template<class T, std::size_t N>
 BOOST_FORCEINLINE
 T (*addressof(T (&o)[N]) BOOST_NOEXCEPT)[N]
--- a/include/boost/core/alloc_construct.hpp
+++ b/include/boost/core/alloc_construct.hpp
@@ -1,169 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#ifndef BOOST_CORE_ALLOC_CONSTRUCT_HPP
-#define BOOST_CORE_ALLOC_CONSTRUCT_HPP
-
-#include <boost/core/noinit_adaptor.hpp>
-
-namespace boost {
-
-template<class A, class T>
-inline void
-alloc_destroy(A& a, T* p)
-{
-    boost::allocator_destroy(a, p);
-}
-
-template<class A, class T>
-inline void
-alloc_destroy_n(A& a, T* p, std::size_t n)
-{
-    while (n > 0) {
-        boost::allocator_destroy(a, p + --n);
-    }
-}
-
-template<class A, class T>
-inline void
-alloc_destroy(noinit_adaptor<A>&, T* p)
-{
-    p->~T();
-}
-
-template<class A, class T>
-inline void
-alloc_destroy_n(noinit_adaptor<A>&, T* p, std::size_t n)
-{
-    while (n > 0) {
-        p[--n].~T();
-    }
-}
-
-namespace detail {
-
-template<class A, class T>
-class alloc_destroyer {
-public:
-    alloc_destroyer(A& a, T* p) BOOST_NOEXCEPT
-        : a_(a),
-          p_(p),
-          n_(0) { }
-
-    ~alloc_destroyer() {
-        boost::alloc_destroy_n(a_, p_, n_);
-    }
-
-    std::size_t& size() BOOST_NOEXCEPT {
-        return n_;
-    }
-
-private:
-    alloc_destroyer(const alloc_destroyer&);
-    alloc_destroyer& operator=(const alloc_destroyer&);
-
-    A& a_;
-    T* p_;
-    std::size_t n_;
-};
-
-} /* detail */
-
-template<class A, class T>
-inline void
-alloc_construct(A& a, T* p)
-{
-    boost::allocator_construct(a, p);
-}
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-template<class A, class T, class U, class... V>
-inline void
-alloc_construct(A& a, T* p, U&& u, V&&... v)
-{
-    boost::allocator_construct(a, p, std::forward<U>(u),
-        std::forward<V>(v)...);
-}
-#else
-template<class A, class T, class U>
-inline void
-alloc_construct(A& a, T* p, U&& u)
-{
-    boost::allocator_construct(a, p, std::forward<U>(u));
-}
-#endif
-#else
-template<class A, class T, class U>
-inline void
-alloc_construct(A& a, T* p, const U& u)
-{
-    boost::allocator_construct(a, p, u);
-}
-
-template<class A, class T, class U>
-inline void
-alloc_construct(A& a, T* p, U& u)
-{
-    boost::allocator_construct(a, p, u);
-}
-#endif
-
-template<class A, class T>
-inline void
-alloc_construct_n(A& a, T* p, std::size_t n)
-{
-    detail::alloc_destroyer<A, T> hold(a, p);
-    for (std::size_t& i = hold.size(); i < n; ++i) {
-        boost::allocator_construct(a, p + i);
-    }
-    hold.size() = 0;
-}
-
-template<class A, class T>
-inline void
-alloc_construct_n(A& a, T* p, std::size_t n, const T* l, std::size_t m)
-{
-    detail::alloc_destroyer<A, T> hold(a, p);
-    for (std::size_t& i = hold.size(); i < n; ++i) {
-        boost::allocator_construct(a, p + i, l[i % m]);
-    }
-    hold.size() = 0;
-}
-
-template<class A, class T, class I>
-inline void
-alloc_construct_n(A& a, T* p, std::size_t n, I b)
-{
-    detail::alloc_destroyer<A, T> hold(a, p);
-    for (std::size_t& i = hold.size(); i < n; void(++i), void(++b)) {
-        boost::allocator_construct(a, p + i, *b);
-    }
-    hold.size() = 0;
-}
-
-template<class A, class T>
-inline void
-alloc_construct(noinit_adaptor<A>&, T* p)
-{
-    ::new(static_cast<void*>(p)) T;
-}
-
-template<class A, class T>
-inline void
-alloc_construct_n(noinit_adaptor<A>& a, T* p, std::size_t n)
-{
-    detail::alloc_destroyer<noinit_adaptor<A>, T> hold(a, p);
-    for (std::size_t& i = hold.size(); i < n; ++i) {
-        ::new(static_cast<void*>(p + i)) T;
-    }
-    hold.size() = 0;
-}
-
-} /* boost */
-
-#endif
--- a/include/boost/core/allocator_access.hpp
+++ b/include/boost/core/allocator_access.hpp
@@ -1,601 +0,0 @@
-/*
-Copyright 2020-2021 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#ifndef BOOST_CORE_ALLOCATOR_ACCESS_HPP
-#define BOOST_CORE_ALLOCATOR_ACCESS_HPP
-
-#include <boost/config.hpp>
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-#include <boost/core/pointer_traits.hpp>
-#include <limits>
-#include <type_traits>
-#endif
-#include <new>
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-#include <utility>
-#endif
-
-#if defined(_LIBCPP_SUPPRESS_DEPRECATED_PUSH)
-_LIBCPP_SUPPRESS_DEPRECATED_PUSH
-#endif
-#if defined(_STL_DISABLE_DEPRECATED_WARNING)
-_STL_DISABLE_DEPRECATED_WARNING
-#endif
-#if defined(_MSC_VER)
-#pragma warning(push)
-#pragma warning(disable:4996)
-#endif
-
-namespace boost {
-
-template<class A>
-struct allocator_value_type {
-    typedef typename A::value_type type;
-};
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_pointer {
-    typedef typename A::pointer type;
-};
-#else
-template<class A, class = void>
-struct allocator_pointer {
-    typedef typename A::value_type* type;
-};
-
-namespace detail {
-
-template<class>
-struct alloc_void {
-    typedef void type;
-};
-
-} /* detail */
-
-template<class A>
-struct allocator_pointer<A,
-    typename detail::alloc_void<typename A::pointer>::type> {
-    typedef typename A::pointer type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_const_pointer {
-    typedef typename A::const_pointer type;
-};
-#else
-template<class A, class = void>
-struct allocator_const_pointer {
-    typedef typename pointer_traits<typename
-        allocator_pointer<A>::type>::template
-            rebind_to<const typename A::value_type>::type type;
-};
-
-template<class A>
-struct allocator_const_pointer<A,
-    typename detail::alloc_void<typename A::const_pointer>::type> {
-    typedef typename A::const_pointer type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_void_pointer {
-    typedef typename A::template rebind<void>::other::pointer type;
-};
-#else
-template<class A, class = void>
-struct allocator_void_pointer {
-     typedef typename pointer_traits<typename
-        allocator_pointer<A>::type>::template
-            rebind_to<void>::type type;
-};
-
-template<class A>
-struct allocator_void_pointer<A,
-    typename detail::alloc_void<typename A::void_pointer>::type> {
-    typedef typename A::void_pointer type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_const_void_pointer {
-    typedef typename A::template rebind<void>::other::const_pointer type;
-};
-#else
-template<class A, class = void>
-struct allocator_const_void_pointer {
-     typedef typename pointer_traits<typename
-        allocator_pointer<A>::type>::template
-            rebind_to<const void>::type type;
-};
-
-template<class A>
-struct allocator_const_void_pointer<A,
-    typename detail::alloc_void<typename A::const_void_pointer>::type> {
-    typedef typename A::const_void_pointer type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_difference_type {
-    typedef typename A::difference_type type;
-};
-#else
-template<class A, class = void>
-struct allocator_difference_type {
-    typedef typename pointer_traits<typename
-        allocator_pointer<A>::type>::difference_type type;
-};
-
-template<class A>
-struct allocator_difference_type<A,
-    typename detail::alloc_void<typename A::difference_type>::type> {
-    typedef typename A::difference_type type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_size_type {
-    typedef typename A::size_type type;
-};
-#else
-template<class A, class = void>
-struct allocator_size_type {
-    typedef typename std::make_unsigned<typename
-        allocator_difference_type<A>::type>::type type;
-};
-
-template<class A>
-struct allocator_size_type<A,
-    typename detail::alloc_void<typename A::size_type>::type> {
-    typedef typename A::size_type type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-namespace detail {
-
-struct alloc_false {
-    BOOST_STATIC_CONSTEXPR bool value = false;
-};
-
-} /* detail */
-
-template<class A>
-struct allocator_propagate_on_container_copy_assignment {
-    typedef detail::alloc_false type;
-};
-#else
-template<class A, class = void>
-struct allocator_propagate_on_container_copy_assignment {
-    typedef std::false_type type;
-};
-
-template<class A>
-struct allocator_propagate_on_container_copy_assignment<A,
-    typename detail::alloc_void<typename
-        A::propagate_on_container_copy_assignment>::type> {
-    typedef typename A::propagate_on_container_copy_assignment type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_propagate_on_container_move_assignment {
-    typedef detail::alloc_false type;
-};
-#else
-template<class A, class = void>
-struct allocator_propagate_on_container_move_assignment {
-    typedef std::false_type type;
-};
-
-template<class A>
-struct allocator_propagate_on_container_move_assignment<A,
-    typename detail::alloc_void<typename
-        A::propagate_on_container_move_assignment>::type> {
-    typedef typename A::propagate_on_container_move_assignment type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_propagate_on_container_swap {
-    typedef detail::alloc_false type;
-};
-#else
-template<class A, class = void>
-struct allocator_propagate_on_container_swap {
-    typedef std::false_type type;
-};
-
-template<class A>
-struct allocator_propagate_on_container_swap<A,
-    typename detail::alloc_void<typename
-        A::propagate_on_container_swap>::type> {
-    typedef typename A::propagate_on_container_swap type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-struct allocator_is_always_equal {
-    typedef detail::alloc_false type;
-};
-#else
-template<class A, class = void>
-struct allocator_is_always_equal {
-    typedef typename std::is_empty<A>::type type;
-};
-
-template<class A>
-struct allocator_is_always_equal<A,
-    typename detail::alloc_void<typename A::is_always_equal>::type> {
-    typedef typename A::is_always_equal type;
-};
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A, class T>
-struct allocator_rebind {
-    typedef typename A::template rebind<T>::other type;
-};
-#else
-namespace detail {
-
-template<class, class>
-struct alloc_to { };
-
-template<template<class, class...> class A, class T, class U, class... V>
-struct alloc_to<A<U, V...>, T> {
-    typedef A<T, V...> type;
-};
-
-} /* detail */
-
-template<class A, class T, class = void>
-struct allocator_rebind {
-    typedef typename detail::alloc_to<A, T>::type type;
-};
-
-template<class A, class T>
-struct allocator_rebind<A, T,
-    typename detail::alloc_void<typename A::template rebind<T>::other>::type> {
-    typedef typename A::template rebind<T>::other type;
-};
-#endif
-
-template<class A>
-inline typename allocator_pointer<A>::type
-allocator_allocate(A& a, typename allocator_size_type<A>::type n)
-{
-    return a.allocate(n);
-}
-
-template<class A>
-inline void
-allocator_deallocate(A& a, typename allocator_pointer<A>::type p,
-    typename allocator_size_type<A>::type n)
-{
-    a.deallocate(p, n);
-}
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-inline typename allocator_pointer<A>::type
-allocator_allocate(A& a, typename allocator_size_type<A>::type n,
-    typename allocator_const_void_pointer<A>::type h)
-{
-    return a.allocate(n, h);
-}
-#else
-namespace detail {
-
-struct alloc_none { };
-
-template<class A>
-class alloc_has_allocate {
-    template<class O>
-    static auto check(int) -> decltype(std::declval<O&>().allocate(
-        std::declval<typename allocator_size_type<A>::type>(),
-        std::declval<typename allocator_const_void_pointer<A>::type>()));
-
-    template<class>
-    static alloc_none check(long);
-
-public:
-    BOOST_STATIC_CONSTEXPR bool value =
-        !std::is_same<decltype(check<A>(0)), alloc_none>::value;
-};
-
-} /* detail */
-
-template<class A>
-inline typename std::enable_if<detail::alloc_has_allocate<A>::value,
-    typename allocator_pointer<A>::type>::type
-allocator_allocate(A& a, typename allocator_size_type<A>::type n,
-    typename allocator_const_void_pointer<A>::type h)
-{
-    return a.allocate(n, h);
-}
-
-template<class A>
-inline typename std::enable_if<!detail::alloc_has_allocate<A>::value,
-    typename allocator_pointer<A>::type>::type
-allocator_allocate(A& a, typename allocator_size_type<A>::type n,
-    typename allocator_const_void_pointer<A>::type)
-{
-    return a.allocate(n);
-}
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A, class T>
-inline void
-allocator_construct(A&, T* p)
-{
-    ::new((void*)p) T();
-}
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-template<class A, class T, class V, class... Args>
-inline void
-allocator_construct(A&, T* p, V&& v, Args&&... args)
-{
-    ::new((void*)p) T(std::forward<V>(v), std::forward<Args>(args)...);
-}
-#else
-template<class A, class T, class V>
-inline void
-allocator_construct(A&, T* p, V&& v)
-{
-    ::new((void*)p) T(std::forward<V>(v));
-}
-#endif
-#else
-template<class A, class T, class V>
-inline void
-allocator_construct(A&, T* p, const V& v)
-{
-    ::new((void*)p) T(v);
-}
-
-template<class A, class T, class V>
-inline void
-allocator_construct(A&, T* p, V& v)
-{
-    ::new((void*)p) T(v);
-}
-#endif
-#else
-namespace detail {
-
-template<class A, class T, class... Args>
-class alloc_has_construct {
-    template<class O>
-    static auto check(int)
-    -> decltype(std::declval<O&>().construct(std::declval<T*>(),
-        std::declval<Args&&>()...));
-
-    template<class>
-    static alloc_none check(long);
-
-public:
-    BOOST_STATIC_CONSTEXPR bool value =
-        !std::is_same<decltype(check<A>(0)), alloc_none>::value;
-};
-
-} /* detail */
-
-template<class A, class T, class... Args>
-inline typename std::enable_if<detail::alloc_has_construct<A, T,
-    Args...>::value>::type
-allocator_construct(A& a, T* p, Args&&... args)
-{
-    a.construct(p, std::forward<Args>(args)...);
-}
-
-template<class A, class T, class... Args>
-inline typename std::enable_if<!detail::alloc_has_construct<A, T,
-    Args...>::value>::type
-allocator_construct(A&, T* p, Args&&... args)
-{
-    ::new((void*)p) T(std::forward<Args>(args)...);
-}
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A, class T>
-inline void
-allocator_destroy(A&, T* p)
-{
-    p->~T();
-    (void)p;
-}
-#else
-namespace detail {
-
-template<class A, class T>
-class alloc_has_destroy {
-    template<class O>
-    static auto check(int)
-    -> decltype(std::declval<O&>().destroy(std::declval<T*>()));
-
-    template<class>
-    static alloc_none check(long);
-
-public:
-    BOOST_STATIC_CONSTEXPR bool value =
-        !std::is_same<decltype(check<A>(0)), alloc_none>::value;
-};
-
-} /* detail */
-
-template<class A, class T>
-inline typename std::enable_if<detail::alloc_has_destroy<A, T>::value>::type
-allocator_destroy(A& a, T* p)
-{
-    a.destroy(p);
-}
-
-template<class A, class T>
-inline typename std::enable_if<!detail::alloc_has_destroy<A, T>::value>::type
-allocator_destroy(A&, T* p)
-{
-    p->~T();
-    (void)p;
-}
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-inline typename allocator_size_type<A>::type
-allocator_max_size(const A& a)
-{
-    return a.max_size();
-}
-#else
-namespace detail {
-
-template<class A>
-class alloc_has_max_size {
-    template<class O>
-    static auto check(int) -> decltype(std::declval<O&>().max_size());
-
-    template<class>
-    static alloc_none check(long);
-
-public:
-    BOOST_STATIC_CONSTEXPR bool value =
-        !std::is_same<decltype(check<A>(0)), alloc_none>::value;
-};
-
-} /* detail */
-
-template<class A>
-inline typename std::enable_if<detail::alloc_has_max_size<A>::value,
-    typename allocator_size_type<A>::type>::type
-allocator_max_size(const A& a)
-{
-    return a.max_size();
-}
-
-template<class A>
-inline typename std::enable_if<!detail::alloc_has_max_size<A>::value,
-    typename allocator_size_type<A>::type>::type
-allocator_max_size(const A&)
-{
-    return (std::numeric_limits<typename
-        allocator_size_type<A>::type>::max)() / sizeof(typename A::value_type);
-}
-#endif
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class A>
-inline A
-allocator_select_on_container_copy_construction(const A& a)
-{
-    return a;
-}
-#else
-namespace detail {
-
-template<class A>
-class alloc_has_soccc {
-    template<class O>
-    static auto check(int)
-    -> decltype(std::declval<O&>().select_on_container_copy_construction());
-
-    template<class>
-    static alloc_none check(long);
-
-public:
-    BOOST_STATIC_CONSTEXPR bool value =
-        !std::is_same<decltype(check<A>(0)), alloc_none>::value;
-};
-
-} /* detail */
-
-template<class A>
-inline typename std::enable_if<detail::alloc_has_soccc<A>::value, A>::type
-allocator_select_on_container_copy_construction(const A& a)
-{
-    return a.select_on_container_copy_construction();
-}
-
-template<class A>
-inline typename std::enable_if<!detail::alloc_has_soccc<A>::value, A>::type
-allocator_select_on_container_copy_construction(const A& a)
-{
-    return a;
-}
-#endif
-
-#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
-template<class A>
-using allocator_value_type_t = typename allocator_value_type<A>::type;
-
-template<class A>
-using allocator_pointer_t = typename allocator_pointer<A>::type;
-
-template<class A>
-using allocator_const_pointer_t = typename allocator_const_pointer<A>::type;
-
-template<class A>
-using allocator_void_pointer_t = typename allocator_void_pointer<A>::type;
-
-template<class A>
-using allocator_const_void_pointer_t =
-    typename allocator_const_void_pointer<A>::type;
-
-template<class A>
-using allocator_difference_type_t =
-    typename allocator_difference_type<A>::type;
-
-template<class A>
-using allocator_size_type_t = typename allocator_size_type<A>::type;
-
-template<class A>
-using allocator_propagate_on_container_copy_assignment_t =
-    typename allocator_propagate_on_container_copy_assignment<A>::type;
-
-template<class A>
-using allocator_propagate_on_container_move_assignment_t =
-    typename allocator_propagate_on_container_move_assignment<A>::type;
-
-template<class A>
-using allocator_propagate_on_container_swap_t =
-    typename allocator_propagate_on_container_swap<A>::type;
-
-template<class A>
-using allocator_is_always_equal_t =
-    typename allocator_is_always_equal<A>::type;
-
-template<class A, class T>
-using allocator_rebind_t = typename allocator_rebind<A, T>::type;
-#endif
-
-} /* boost */
-
-#if defined(_LIBCPP_SUPPRESS_DEPRECATED_POP)
-_LIBCPP_SUPPRESS_DEPRECATED_POP
-#endif
-#if defined(_STL_RESTORE_DEPRECATED_WARNING)
-_STL_RESTORE_DEPRECATED_WARNING
-#endif
-#if defined(_MSC_VER)
-#pragma warning(pop)
-#endif
-
-#endif
--- a/include/boost/core/bit.hpp
+++ b/include/boost/core/bit.hpp
@@ -1,581 +0,0 @@
-#ifndef BOOST_CORE_BIT_HPP_INCLUDED
-#define BOOST_CORE_BIT_HPP_INCLUDED
-
-// MS compatible compilers support #pragma once
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-// boost/core/bit.hpp
-//
-// A portable version of the C++20 standard header <bit>
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/config.hpp>
-#include <boost/static_assert.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-#include <cstring>
-
-#if defined(_MSC_VER)
-# include <intrin.h>
-# pragma intrinsic(_BitScanForward)
-# pragma intrinsic(_BitScanReverse)
-# if defined(_M_X64)
-#  pragma intrinsic(_BitScanForward64)
-#  pragma intrinsic(_BitScanReverse64)
-# endif
-#endif // defined(_MSC_VER)
-
-namespace boost
-{
-namespace core
-{
-
-// bit_cast
-
-template<class To, class From>
-To bit_cast( From const & from ) BOOST_NOEXCEPT
-{
-    BOOST_STATIC_ASSERT( sizeof(To) == sizeof(From) );
-
-    To to;
-    std::memcpy( &to, &from, sizeof(To) );
-    return to;
-}
-
-// countl
-
-#if defined(__GNUC__) || defined(__clang__)
-
-namespace detail
-{
-
-BOOST_CONSTEXPR inline int countl_impl( unsigned char x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_clz( x ) - ( std::numeric_limits<unsigned int>::digits - std::numeric_limits<unsigned char>::digits ): std::numeric_limits<unsigned char>::digits;
-}
-
-BOOST_CONSTEXPR inline int countl_impl( unsigned short x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_clz( x ) - ( std::numeric_limits<unsigned int>::digits - std::numeric_limits<unsigned short>::digits ): std::numeric_limits<unsigned short>::digits;
-}
-
-BOOST_CONSTEXPR inline int countl_impl( unsigned int x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_clz( x ): std::numeric_limits<unsigned int>::digits;
-}
-
-BOOST_CONSTEXPR inline int countl_impl( unsigned long x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_clzl( x ): std::numeric_limits<unsigned long>::digits;
-}
-
-BOOST_CONSTEXPR inline int countl_impl( unsigned long long x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_clzll( x ): std::numeric_limits<unsigned long long>::digits;
-}
-
-} // namespace detail
-
-template<class T>
-BOOST_CONSTEXPR int countl_zero( T x ) BOOST_NOEXCEPT
-{
-    return boost::core::detail::countl_impl( x );
-}
-
-#else // defined(__GNUC__) || defined(__clang__)
-
-namespace detail
-{
-
-inline int countl_impl( boost::uint32_t x ) BOOST_NOEXCEPT
-{
-#if defined(_MSC_VER)
-
-    unsigned long r;
-
-    if( _BitScanReverse( &r, x ) )
-    {
-        return 31 - static_cast<int>( r );
-    }
-    else
-    {
-        return 32;
-    }
-
-#else
-
-    static unsigned char const mod37[ 37 ] = { 32, 31, 6, 30, 9, 5, 0, 29, 16, 8, 2, 4, 21, 0, 19, 28, 25, 15, 0, 7, 10, 1, 17, 3, 22, 20, 26, 0, 11, 18, 23, 27, 12, 24, 13, 14, 0 };
-
-    x |= x >> 1;
-    x |= x >> 2;
-    x |= x >> 4;
-    x |= x >> 8;
-    x |= x >> 16;
-
-    return mod37[ x % 37 ];
-
-#endif
-}
-
-inline int countl_impl( boost::uint64_t x ) BOOST_NOEXCEPT
-{
-#if defined(_MSC_VER) && defined(_M_X64)
-
-    unsigned long r;
-
-    if( _BitScanReverse64( &r, x ) )
-    {
-        return 63 - static_cast<int>( r );
-    }
-    else
-    {
-        return 64;
-    }
-
-#else
-
-    return static_cast<boost::uint32_t>( x >> 32 ) != 0?
-        boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x >> 32 ) ):
-        boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) ) + 32;
-
-#endif
-}
-
-inline int countl_impl( boost::uint8_t x ) BOOST_NOEXCEPT
-{
-    return boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) ) - 24;
-}
-
-inline int countl_impl( boost::uint16_t x ) BOOST_NOEXCEPT
-{
-    return boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) ) - 16;
-}
-
-} // namespace detail
-
-template<class T>
-int countl_zero( T x ) BOOST_NOEXCEPT
-{
-    BOOST_STATIC_ASSERT( sizeof(T) == sizeof(boost::uint8_t) || sizeof(T) == sizeof(boost::uint16_t) || sizeof(T) == sizeof(boost::uint32_t) || sizeof(T) == sizeof(boost::uint64_t) );
-
-    if( sizeof(T) == sizeof(boost::uint8_t) )
-    {
-        return boost::core::detail::countl_impl( static_cast<boost::uint8_t>( x ) );
-    }
-    else if( sizeof(T) == sizeof(boost::uint16_t) )
-    {
-        return boost::core::detail::countl_impl( static_cast<boost::uint16_t>( x ) );
-    }
-    else if( sizeof(T) == sizeof(boost::uint32_t) )
-    {
-        return boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) );
-    }
-    else
-    {
-        return boost::core::detail::countl_impl( static_cast<boost::uint64_t>( x ) );
-    }
-}
-
-#endif // defined(__GNUC__) || defined(__clang__)
-
-template<class T>
-BOOST_CONSTEXPR int countl_one( T x ) BOOST_NOEXCEPT
-{
-    return boost::core::countl_zero( static_cast<T>( ~x ) );
-}
-
-// countr
-
-#if defined(__GNUC__) || defined(__clang__)
-
-namespace detail
-{
-
-BOOST_CONSTEXPR inline int countr_impl( unsigned char x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_ctz( x ): std::numeric_limits<unsigned char>::digits;
-}
-
-BOOST_CONSTEXPR inline int countr_impl( unsigned short x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_ctz( x ): std::numeric_limits<unsigned short>::digits;
-}
-
-BOOST_CONSTEXPR inline int countr_impl( unsigned int x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_ctz( x ): std::numeric_limits<unsigned int>::digits;
-}
-
-BOOST_CONSTEXPR inline int countr_impl( unsigned long x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_ctzl( x ): std::numeric_limits<unsigned long>::digits;
-}
-
-BOOST_CONSTEXPR inline int countr_impl( unsigned long long x ) BOOST_NOEXCEPT
-{
-    return x? __builtin_ctzll( x ): std::numeric_limits<unsigned long long>::digits;
-}
-
-} // namespace detail
-
-template<class T>
-BOOST_CONSTEXPR int countr_zero( T x ) BOOST_NOEXCEPT
-{
-    return boost::core::detail::countr_impl( x );
-}
-
-#else // defined(__GNUC__) || defined(__clang__)
-
-namespace detail
-{
-
-inline int countr_impl( boost::uint32_t x ) BOOST_NOEXCEPT
-{
-#if defined(_MSC_VER)
-
-    unsigned long r;
-
-    if( _BitScanForward( &r, x ) )
-    {
-        return static_cast<int>( r );
-    }
-    else
-    {
-        return 32;
-    }
-
-#else
-
-    static unsigned char const mod37[ 37 ] = { 32, 0, 1, 26, 2, 23, 27, 0, 3, 16, 24, 30, 28, 11, 0, 13, 4, 7, 17, 0, 25, 22, 31, 15, 29, 10, 12, 6, 0, 21, 14, 9, 5, 20, 8, 19, 18 };
-    return mod37[ ( -(boost::int32_t)x & x ) % 37 ];
-
-#endif
-}
-
-inline int countr_impl( boost::uint64_t x ) BOOST_NOEXCEPT
-{
-#if defined(_MSC_VER) && defined(_M_X64)
-
-    unsigned long r;
-
-    if( _BitScanForward64( &r, x ) )
-    {
-        return static_cast<int>( r );
-    }
-    else
-    {
-        return 64;
-    }
-
-#else
-
-    return static_cast<boost::uint32_t>( x ) != 0?
-        boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) ):
-        boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x >> 32 ) ) + 32;
-
-#endif
-}
-
-inline int countr_impl( boost::uint8_t x ) BOOST_NOEXCEPT
-{
-    return boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) | 0x100 );
-}
-
-inline int countr_impl( boost::uint16_t x ) BOOST_NOEXCEPT
-{
-    return boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) | 0x10000 );
-}
-
-} // namespace detail
-
-template<class T>
-int countr_zero( T x ) BOOST_NOEXCEPT
-{
-    BOOST_STATIC_ASSERT( sizeof(T) == sizeof(boost::uint8_t) || sizeof(T) == sizeof(boost::uint16_t) || sizeof(T) == sizeof(boost::uint32_t) || sizeof(T) == sizeof(boost::uint64_t) );
-
-    if( sizeof(T) == sizeof(boost::uint8_t) )
-    {
-        return boost::core::detail::countr_impl( static_cast<boost::uint8_t>( x ) );
-    }
-    else if( sizeof(T) == sizeof(boost::uint16_t) )
-    {
-        return boost::core::detail::countr_impl( static_cast<boost::uint16_t>( x ) );
-    }
-    else if( sizeof(T) == sizeof(boost::uint32_t) )
-    {
-        return boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) );
-    }
-    else
-    {
-        return boost::core::detail::countr_impl( static_cast<boost::uint64_t>( x ) );
-    }
-}
-
-#endif // defined(__GNUC__) || defined(__clang__)
-
-template<class T>
-BOOST_CONSTEXPR int countr_one( T x ) BOOST_NOEXCEPT
-{
-    return boost::core::countr_zero( static_cast<T>( ~x ) );
-}
-
-// popcount
-
-#if defined(__GNUC__) || defined(__clang__)
-
-#if defined(__clang__) && __clang_major__ * 100 + __clang_minor__ < 304
-# define BOOST_CORE_POPCOUNT_CONSTEXPR
-#else
-# define BOOST_CORE_POPCOUNT_CONSTEXPR BOOST_CONSTEXPR
-#endif
-
-namespace detail
-{
-
-BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned char x ) BOOST_NOEXCEPT
-{
-    return __builtin_popcount( x );
-}
-
-BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned short x ) BOOST_NOEXCEPT
-{
-    return __builtin_popcount( x );
-}
-
-BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned int x ) BOOST_NOEXCEPT
-{
-    return __builtin_popcount( x );
-}
-
-BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned long x ) BOOST_NOEXCEPT
-{
-    return __builtin_popcountl( x );
-}
-
-BOOST_CORE_POPCOUNT_CONSTEXPR inline int popcount_impl( unsigned long long x ) BOOST_NOEXCEPT
-{
-    return __builtin_popcountll( x );
-}
-
-} // namespace detail
-
-#undef BOOST_CORE_POPCOUNT_CONSTEXPR
-
-template<class T>
-BOOST_CONSTEXPR int popcount( T x ) BOOST_NOEXCEPT
-{
-    return boost::core::detail::popcount_impl( x );
-}
-
-#else // defined(__GNUC__) || defined(__clang__)
-
-namespace detail
-{
-
-BOOST_CXX14_CONSTEXPR inline int popcount_impl( boost::uint32_t x ) BOOST_NOEXCEPT
-{
-    x = x - ( ( x >> 1 ) & 0x55555555 );
-    x = ( x & 0x33333333 ) + ( ( x >> 2 ) & 0x33333333 );
-    x = ( x + ( x >> 4 ) ) & 0x0F0F0F0F;
-
-    return static_cast<unsigned>( ( x * 0x01010101 ) >> 24 );
-}
-
-BOOST_CXX14_CONSTEXPR inline int popcount_impl( boost::uint64_t x ) BOOST_NOEXCEPT
-{
-    x = x - ( ( x >> 1 ) & 0x5555555555555555 );
-    x = ( x & 0x3333333333333333 ) + ( ( x >> 2 ) & 0x3333333333333333 );
-    x = ( x + ( x >> 4 ) ) & 0x0F0F0F0F0F0F0F0F;
-
-    return static_cast<unsigned>( ( x * 0x0101010101010101 ) >> 56 );
-}
-
-} // namespace detail
-
-template<class T>
-BOOST_CXX14_CONSTEXPR int popcount( T x ) BOOST_NOEXCEPT
-{
-    BOOST_STATIC_ASSERT( sizeof(T) <= sizeof(boost::uint64_t) );
-
-    if( sizeof(T) <= sizeof(boost::uint32_t) )
-    {
-        return boost::core::detail::popcount_impl( static_cast<boost::uint32_t>( x ) );
-    }
-    else
-    {
-        return boost::core::detail::popcount_impl( static_cast<boost::uint64_t>( x ) );
-    }
-}
-
-#endif // defined(__GNUC__) || defined(__clang__)
-
-// rotating
-
-template<class T>
-BOOST_CXX14_CONSTEXPR T rotl( T x, int s ) BOOST_NOEXCEPT
-{
-    unsigned const mask = std::numeric_limits<T>::digits - 1;
-    return x << (s & mask) | x >> ((-s) & mask);
-}
-
-template<class T>
-BOOST_CXX14_CONSTEXPR T rotr( T x, int s ) BOOST_NOEXCEPT
-{
-    unsigned const mask = std::numeric_limits<T>::digits - 1;
-    return x >> (s & mask) | x << ((-s) & mask);
-}
-
-// integral powers of 2
-
-template<class T>
-BOOST_CONSTEXPR bool has_single_bit( T x ) BOOST_NOEXCEPT
-{
-    return x != 0 && ( x & ( x - 1 ) ) == 0;
-}
-
-template<class T>
-BOOST_CONSTEXPR T bit_width( T x ) BOOST_NOEXCEPT
-{
-    return std::numeric_limits<T>::digits - boost::core::countl_zero( x );
-}
-
-template<class T>
-BOOST_CONSTEXPR T bit_floor( T x ) BOOST_NOEXCEPT
-{
-    return x == 0? 0: T(1) << ( boost::core::bit_width( x ) - 1 );
-}
-
-namespace detail
-{
-
-BOOST_CXX14_CONSTEXPR inline boost::uint32_t bit_ceil_impl( boost::uint32_t x ) BOOST_NOEXCEPT
-{
-    if( x == 0 )
-    {
-        return 0;
-    }
-
-    --x;
-
-    x |= x >> 1;
-    x |= x >> 2;
-    x |= x >> 4;
-    x |= x >> 8;
-    x |= x >> 16;
-
-    ++x;
-
-    return x;
-}
-
-BOOST_CXX14_CONSTEXPR inline boost::uint64_t bit_ceil_impl( boost::uint64_t x ) BOOST_NOEXCEPT
-{
-    if( x == 0 )
-    {
-        return 0;
-    }
-
-    --x;
-
-    x |= x >> 1;
-    x |= x >> 2;
-    x |= x >> 4;
-    x |= x >> 8;
-    x |= x >> 16;
-    x |= x >> 32;
-
-    ++x;
-
-    return x;
-}
-
-} // namespace detail
-
-template<class T>
-BOOST_CXX14_CONSTEXPR T bit_ceil( T x ) BOOST_NOEXCEPT
-{
-    BOOST_STATIC_ASSERT( sizeof(T) <= sizeof(boost::uint64_t) );
-
-    if( sizeof(T) <= sizeof(boost::uint32_t) )
-    {
-        return static_cast<T>( boost::core::detail::bit_ceil_impl( static_cast<boost::uint32_t>( x ) ) );
-    }
-    else
-    {
-        return static_cast<T>( boost::core::detail::bit_ceil_impl( static_cast<boost::uint64_t>( x ) ) );
-    }
-}
-
-// endian
-
-#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-
-# define BOOST_CORE_BIT_NATIVE_INITIALIZER =little
-
-#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-
-# define BOOST_CORE_BIT_NATIVE_INITIALIZER =big
-
-#elif defined(__BYTE_ORDER__) && defined(__ORDER_PDP_ENDIAN__) && __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
-
-# define BOOST_CORE_BIT_NATIVE_INITIALIZER
-
-#elif defined(__LITTLE_ENDIAN__)
-
-# define BOOST_CORE_BIT_NATIVE_INITIALIZER =little
-
-#elif defined(__BIG_ENDIAN__)
-
-# define BOOST_CORE_BIT_NATIVE_INITIALIZER =big
-
-#elif defined(_MSC_VER) || defined(__i386__) || defined(__x86_64__)
-
-# define BOOST_CORE_BIT_NATIVE_INITIALIZER =little
-
-#else
-
-# define BOOST_CORE_BIT_NATIVE_INITIALIZER
-
-#endif
-
-#if !defined(BOOST_NO_CXX11_SCOPED_ENUMS)
-
-enum class endian
-{
-    big,
-    little,
-    native BOOST_CORE_BIT_NATIVE_INITIALIZER
-};
-
-typedef endian endian_type;
-
-#else
-
-namespace endian
-{
-
-enum type
-{
-    big,
-    little,
-    native BOOST_CORE_BIT_NATIVE_INITIALIZER
-};
-
-} // namespace endian
-
-typedef endian::type endian_type;
-
-#endif
-
-#undef BOOST_CORE_BIT_NATIVE_INITIALIZER
-
-} // namespace core
-} // namespace boost
-
-#endif  // #ifndef BOOST_CORE_BIT_HPP_INCLUDED
--- a/include/boost/core/checked_delete.hpp
+++ b/include/boost/core/checked_delete.hpp
@@ -7,8 +7,6 @@
 # pragma once
 #endif

-#include <boost/config.hpp>
-
 //
 //  boost/checked_delete.hpp
 //
@@ -28,7 +26,7 @@ namespace boost

 // verify that types are complete for increased safety

-template<class T> inline void checked_delete(T * x) BOOST_NOEXCEPT
+template<class T> inline void checked_delete(T * x)
 {
    // intentionally complex - simplification causes regressions
    typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
@@ -36,7 +34,7 @@ template<class T> inline void checked_delete(T * x) BOOST_NOEXCEPT
    delete x;
 }

-template<class T> inline void checked_array_delete(T * x) BOOST_NOEXCEPT
+template<class T> inline void checked_array_delete(T * x)
 {
    typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
    (void) sizeof(type_must_be_complete);
@@ -48,7 +46,7 @@ template<class T> struct checked_deleter
    typedef void result_type;
    typedef T * argument_type;

-    void operator()(T * x) const BOOST_NOEXCEPT
+    void operator()(T * x) const
    {
        // boost:: disables ADL
        boost::checked_delete(x);
@@ -60,7 +58,7 @@ template<class T> struct checked_array_deleter
    typedef void result_type;
    typedef T * argument_type;

-    void operator()(T * x) const BOOST_NOEXCEPT
+    void operator()(T * x) const
    {
        boost::checked_array_delete(x);
    }
--- a/include/boost/core/cmath.hpp
+++ b/include/boost/core/cmath.hpp
@@ -1,298 +0,0 @@
-#ifndef BOOST_CORE_CMATH_HPP_INCLUDED
-#define BOOST_CORE_CMATH_HPP_INCLUDED
-
-// MS compatible compilers support #pragma once
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-// boost/core/cmath.hpp
-//
-// Floating point classification and sign manipulation functions
-// Extracted from https://github.com/boostorg/lexical_cast/pull/37
-//
-// Copyright 2020, 2021 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <cmath>
-
-#if defined(BOOST_CORE_USE_GENERIC_CMATH) || (!defined(_MSC_VER) && !defined(FP_SUBNORMAL))
-
-#include <boost/cstdint.hpp>
-#include <boost/static_assert.hpp>
-#include <limits>
-#include <cstring>
-
-namespace boost
-{
-namespace core
-{
-
-// fpclassify return values
-
-int const fp_zero = 0;
-int const fp_subnormal = 1;
-int const fp_normal = 2;
-int const fp_infinite = 3;
-int const fp_nan = 4;
-
-// Classification functions
-
-template<class T> bool isfinite( T x )
-{
-    return x <= (std::numeric_limits<T>::max)() && x >= -(std::numeric_limits<T>::max)();
-}
-
-template<class T> bool isinf( T x )
-{
-    return x > (std::numeric_limits<T>::max)() || x < -(std::numeric_limits<T>::max)();
-}
-
-template<class T> bool isnan( T x )
-{
-    return !isfinite( x ) && !isinf( x );
-}
-
-template<class T> bool isnormal( T x )
-{
-    return isfinite( x ) && ( x >= (std::numeric_limits<T>::min)() || x <= -(std::numeric_limits<T>::min)() );
-}
-
-template<class T> int fpclassify( T x )
-{
-    if( x == 0 ) return fp_zero;
-
-    if( x < 0 ) x = -x;
-
-    if( x > (std::numeric_limits<T>::max)() ) return fp_infinite;
-
-    if( x >= (std::numeric_limits<T>::min)() ) return fp_normal;
-
-    if( x < (std::numeric_limits<T>::min)() ) return fp_subnormal;
-
-    return fp_nan;
-}
-
-// Sign manipulation functions
-
-inline bool signbit( float x )
-{
-    boost::int32_t y;
-
-    BOOST_STATIC_ASSERT( sizeof( x ) == sizeof( y ) );
-
-    std::memcpy( &y, &x, sizeof( y ) );
-
-    return y < 0;
-}
-
-inline bool signbit( double x )
-{
-    boost::int64_t y;
-
-    BOOST_STATIC_ASSERT( sizeof( x ) == sizeof( y ) );
-
-    std::memcpy( &y, &x, sizeof( y ) );
-
-    return y < 0;
-}
-
-inline bool signbit( long double x )
-{
-    return signbit( static_cast<double>( x ) );
-}
-
-template<class T> T copysign( T x, T y )
-{
-    return signbit( x ) == signbit( y )? x: -x;
-}
-
-} // namespace core
-} // namespace boost
-
-#else // defined(BOOST_CORE_USE_GENERIC_CMATH)
-
-#if defined(_MSC_VER) && _MSC_VER < 1800
-# include <float.h>
-#endif
-
-namespace boost
-{
-namespace core
-{
-#if defined(_MSC_VER) && _MSC_VER < 1800
-
-template<class T> T copysign( T x, T y )
-{
-    return static_cast<T>( _copysign( static_cast<double>( x ), static_cast<double>( y ) ) );
-}
-
-template<class T> bool isnan( T x )
-{
-    return _isnan( static_cast<double>( x ) ) != 0;
-}
-
-template<class T> bool isfinite( T x )
-{
-    return _finite( static_cast<double>( x ) ) != 0;
-}
-
-template<class T> bool isinf( T x )
-{
-    return ( _fpclass( static_cast<double>( x ) ) & ( _FPCLASS_PINF | _FPCLASS_NINF ) ) != 0;
-}
-
-inline bool isnormal( float x )
-{
-    // no _fpclassf in 32 bit mode
-    unsigned y = reinterpret_cast< unsigned const& >( x );
-    unsigned exp = ( y >> 23 ) & 0xFF;
-    return exp != 0 && exp != 0xFF;
-}
-
-inline bool isnormal( double x )
-{
-    return ( _fpclass( x ) & ( _FPCLASS_PN | _FPCLASS_NN ) ) != 0;
-}
-
-inline bool isnormal( long double x )
-{
-    return boost::core::isnormal( static_cast<double>( x ) );
-}
-
-template<class T> bool signbit( T x )
-{
-    return _copysign( 1.0, static_cast<double>( x ) ) < 0.0;
-}
-
-int const fp_zero = 0;
-int const fp_subnormal = 1;
-int const fp_normal = 2;
-int const fp_infinite = 3;
-int const fp_nan = 4;
-
-inline int fpclassify( float x )
-{
-    switch( _fpclass( x ) )
-    {
-    case _FPCLASS_SNAN:
-    case _FPCLASS_QNAN:
-
-        return fp_nan;
-
-    case _FPCLASS_NINF:
-    case _FPCLASS_PINF:
-
-        return fp_infinite;
-
-    case _FPCLASS_NZ:
-    case _FPCLASS_PZ:
-
-        return fp_zero;
-
-    default:
-
-        return boost::core::isnormal( x )? fp_normal: fp_subnormal;
-    }
-}
-
-inline int fpclassify( double x )
-{
-    switch( _fpclass( x ) )
-    {
-    case _FPCLASS_SNAN:
-    case _FPCLASS_QNAN:
-
-        return fp_nan;
-
-    case _FPCLASS_NINF:
-    case _FPCLASS_PINF:
-
-        return fp_infinite;
-
-    case _FPCLASS_NZ:
-    case _FPCLASS_PZ:
-
-        return fp_zero;
-
-    case _FPCLASS_ND:
-    case _FPCLASS_PD:
-
-        return fp_subnormal;
-
-    default:
-
-        return fp_normal;
-    }
-}
-
-inline int fpclassify( long double x )
-{
-    return boost::core::fpclassify( static_cast<double>( x ) );
-}
-
-#else
-
-using std::isfinite;
-using std::isnan;
-using std::isinf;
-using std::isnormal;
-using std::fpclassify;
-
-int const fp_zero = FP_ZERO;
-int const fp_subnormal = FP_SUBNORMAL;
-int const fp_normal = FP_NORMAL;
-int const fp_infinite = FP_INFINITE;
-int const fp_nan = FP_NAN;
-
-using std::signbit;
-
-// std::copysign doesn't exist in libstdc++ under -std=c++03
-
-#if !defined(__GNUC__)
-
-template<class T> T copysign( T x, T y )
-{
-    return std::copysign( x, y );
-}
-
-#else
-
-namespace detail
-{
-
-// ::copysignl is unreliable, use the built-ins
-
-inline float copysign_impl( float x, float y )
-{
-    return __builtin_copysignf( x, y );
-}
-
-inline double copysign_impl( double x, double y )
-{
-    return __builtin_copysign( x, y );
-}
-
-inline long double copysign_impl( long double x, long double y )
-{
-    return __builtin_copysignl( x, y );
-}
-
-} // namespace detail
-
-template<class T> T copysign( T x, T y )
-{
-    return boost::core::detail::copysign_impl( x, y );
-}
-
-#endif // !defined(__GNUC__)
-#endif // #if defined(_MSC_VER) && _MSC_VER < 1800
-
-} // namespace core
-} // namespace boost
-
-#endif // defined(BOOST_CORE_USE_GENERIC_CMATH)
-
-#endif  // #ifndef BOOST_CORE_CMATH_HPP_INCLUDED
--- a/include/boost/core/default_allocator.hpp
+++ b/include/boost/core/default_allocator.hpp
@@ -1,148 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#ifndef BOOST_CORE_DEFAULT_ALLOCATOR_HPP
-#define BOOST_CORE_DEFAULT_ALLOCATOR_HPP
-
-#include <boost/config.hpp>
-#include <new>
-
-namespace boost {
-
-#if defined(BOOST_NO_EXCEPTIONS)
-BOOST_NORETURN void throw_exception(const std::exception&);
-#endif
-
-namespace default_ {
-
-struct true_type {
-    typedef bool value_type;
-    typedef true_type type;
-
-    BOOST_STATIC_CONSTANT(bool, value = true);
-
-    BOOST_CONSTEXPR operator bool() const BOOST_NOEXCEPT {
-        return true;
-    }
-
-    BOOST_CONSTEXPR bool operator()() const BOOST_NOEXCEPT {
-        return true;
-    }
-};
-
-template<class T>
-struct add_reference {
-    typedef T& type;
-};
-
-template<>
-struct add_reference<void> {
-    typedef void type;
-};
-
-template<>
-struct add_reference<const void> {
-    typedef const void type;
-};
-
-template<class T>
-struct default_allocator {
-    typedef T value_type;
-    typedef T* pointer;
-    typedef const T* const_pointer;
-    typedef typename add_reference<T>::type reference;
-    typedef typename add_reference<const T>::type const_reference;
-    typedef std::size_t size_type;
-    typedef std::ptrdiff_t difference_type;
-    typedef true_type propagate_on_container_move_assignment;
-    typedef true_type is_always_equal;
-
-    template<class U>
-    struct rebind {
-        typedef default_allocator<U> other;
-    };
-
-#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
-    default_allocator() = default;
-#else
-    BOOST_CONSTEXPR default_allocator() BOOST_NOEXCEPT { }
-#endif
-
-    template<class U>
-    BOOST_CONSTEXPR default_allocator(const default_allocator<U>&)
-        BOOST_NOEXCEPT { }
-
-    BOOST_CONSTEXPR std::size_t max_size() const BOOST_NOEXCEPT {
-        return static_cast<std::size_t>(-1) / (2 < sizeof(T) ? sizeof(T) : 2);
-    }
-
-#if !defined(BOOST_NO_EXCEPTIONS)
-    T* allocate(std::size_t n) {
-        if (n > max_size()) {
-            throw std::bad_alloc();
-        }
-        return static_cast<T*>(::operator new(sizeof(T) * n));
-    }
-
-    void deallocate(T* p, std::size_t) {
-        ::operator delete(p);
-    }
-#else
-    T* allocate(std::size_t n) {
-        if (n > max_size()) {
-            boost::throw_exception(std::bad_alloc());
-        }
-        void* p = ::operator new(sizeof(T) * n, std::nothrow);
-        if (!p) {
-            boost::throw_exception(std::bad_alloc());
-        }
-        return static_cast<T*>(p);
-    }
-
-    void deallocate(T* p, std::size_t) {
-        ::operator delete(p, std::nothrow);
-    }
-#endif
-
-#if (defined(BOOST_LIBSTDCXX_VERSION) && BOOST_LIBSTDCXX_VERSION < 60000) || \
-    defined(BOOST_NO_CXX11_ALLOCATOR)
-    template<class U, class V>
-    void construct(U* p, const V& v) {
-        ::new(p) U(v);
-    }
-
-    template<class U>
-    void destroy(U* p) {
-        p->~U();
-        (void)p;
-    }
-#endif
-};
-
-template<class T, class U>
-BOOST_CONSTEXPR inline bool
-operator==(const default_allocator<T>&,
-    const default_allocator<U>&) BOOST_NOEXCEPT
-{
-    return true;
-}
-
-template<class T, class U>
-BOOST_CONSTEXPR inline bool
-operator!=(const default_allocator<T>&,
-    const default_allocator<U>&) BOOST_NOEXCEPT
-{
-    return false;
-}
-
-} /* default_ */
-
-using default_::default_allocator;
-
-} /* boost */
-
-#endif
--- a/include/boost/core/detail/splitmix64.hpp
+++ b/include/boost/core/detail/splitmix64.hpp
@@ -1,54 +0,0 @@
-#ifndef BOOST_CORE_DETAIL_SPLITMIX64_HPP_INCLUDED
-#define BOOST_CORE_DETAIL_SPLITMIX64_HPP_INCLUDED
-
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-//
-// An implementation of splitmix64 for testing purposes,
-// derived from Sebastiano Vigna's public domain implementation
-// http://xorshift.di.unimi.it/splitmix64.c
-
-#include <boost/cstdint.hpp>
-
-namespace boost
-{
-namespace detail
-{
-
-class splitmix64
-{
-private:
-
-    boost::uint64_t x_;
-
-public:
-
-    splitmix64(): x_( 0 )
-    {
-    }
-
-    explicit splitmix64( boost::uint64_t seed ): x_( seed )
-    {
-    }
-
-    boost::uint64_t operator()()
-    {
-        x_ += 0x9e3779b97f4a7c15;
-
-        boost::uint64_t z = x_;
-
-        z ^= z >> 30;
-        z *= 0xbf58476d1ce4e5b9;
-        z ^= z >> 27;
-        z *= 0x94d049bb133111eb;
-        z ^= z >> 31;
-
-        return z;
-    }
-};
-
-} // namespace detail
-} // namespace boost
-
-#endif // #ifndef BOOST_CORE_DETAIL_SPLITMIX64_HPP_INCLUDED
--- a/include/boost/core/empty_value.hpp
+++ b/include/boost/core/empty_value.hpp
@@ -59,9 +59,9 @@ public:

 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-    template<class U, class... Args>
-    empty_value(boost::empty_init_t, U&& value, Args&&... args)
-        : value_(std::forward<U>(value), std::forward<Args>(args)...) { }
+    template<class... Args>
+    explicit empty_value(boost::empty_init_t, Args&&... args)
+        : value_(std::forward<Args>(args)...) { }
 #else
    template<class U>
    empty_value(boost::empty_init_t, U&& value)
@@ -71,10 +71,6 @@ public:
    template<class U>
    empty_value(boost::empty_init_t, const U& value)
        : value_(value) { }
-
-    template<class U>
-    empty_value(boost::empty_init_t, U& value)
-        : value_(value) { }
 #endif

    const T& get() const BOOST_NOEXCEPT {
@@ -107,9 +103,9 @@ public:

 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-    template<class U, class... Args>
-    empty_value(boost::empty_init_t, U&& value, Args&&... args)
-        : T(std::forward<U>(value), std::forward<Args>(args)...) { }
+    template<class... Args>
+    explicit empty_value(boost::empty_init_t, Args&&... args)
+        : T(std::forward<Args>(args)...) { }
 #else
    template<class U>
    empty_value(boost::empty_init_t, U&& value)
@@ -119,10 +115,6 @@ public:
    template<class U>
    empty_value(boost::empty_init_t, const U& value)
        : T(value) { }
-
-    template<class U>
-    empty_value(boost::empty_init_t, U& value)
-        : T(value) { }
 #endif

    const T& get() const BOOST_NOEXCEPT {
@@ -139,8 +131,6 @@ public:

 using empty_::empty_value;

-BOOST_INLINE_CONSTEXPR empty_init_t empty_init = empty_init_t();
-
 } /* boost */

 #endif
--- a/include/boost/core/first_scalar.hpp
+++ b/include/boost/core/first_scalar.hpp
@@ -1,45 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#ifndef BOOST_CORE_FIRST_SCALAR_HPP
-#define BOOST_CORE_FIRST_SCALAR_HPP
-
-#include <boost/config.hpp>
-#include <cstddef>
-
-namespace boost {
-namespace detail {
-
-template<class T>
-struct make_scalar {
-    typedef T type;
-};
-
-template<class T, std::size_t N>
-struct make_scalar<T[N]> {
-    typedef typename make_scalar<T>::type type;
-};
-
-} /* detail */
-
-template<class T>
-BOOST_CONSTEXPR inline T*
-first_scalar(T* p) BOOST_NOEXCEPT
-{
-    return p;
-}
-
-template<class T, std::size_t N>
-BOOST_CONSTEXPR inline typename detail::make_scalar<T>::type*
-first_scalar(T (*p)[N]) BOOST_NOEXCEPT
-{
-    return boost::first_scalar(&(*p)[0]);
-}
-
-} /* boost */
-
-#endif
--- a/include/boost/core/ignore_unused.hpp
+++ b/include/boost/core/ignore_unused.hpp
@@ -11,64 +11,34 @@

 namespace boost {

-#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-
-template <typename... Ts>
-BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(Ts&& ...)
-{}
-
-#else
+#ifndef BOOST_NO_CXX11_VARIADIC_TEMPLATES

 template <typename... Ts>
 BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(Ts const& ...)
 {}

-#endif
-
 template <typename... Ts>
 BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused()
 {}

-#else // !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-
-template <typename T1>
-BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&)
-{}
+#else

 template <typename T1>
 BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&)
 {}

-template <typename T1, typename T2>
-BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&)
-{}
-
 template <typename T1, typename T2>
 BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&)
 {}

-template <typename T1, typename T2, typename T3>
-BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&, T3&)
-{}
-
 template <typename T1, typename T2, typename T3>
 BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&, T3 const&)
 {}

-template <typename T1, typename T2, typename T3, typename T4>
-BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&, T3&, T4&)
-{}
-
 template <typename T1, typename T2, typename T3, typename T4>
 BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&, T3 const&, T4 const&)
 {}

-template <typename T1, typename T2, typename T3, typename T4, typename T5>
-BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1&, T2&, T3&, T4&, T5&)
-{}
-
 template <typename T1, typename T2, typename T3, typename T4, typename T5>
 BOOST_FORCEINLINE BOOST_CXX14_CONSTEXPR void ignore_unused(T1 const&, T2 const&, T3 const&, T4 const&, T5 const&)
 {}
--- a/include/boost/core/lightweight_test.hpp
+++ b/include/boost/core/lightweight_test.hpp
@@ -22,21 +22,13 @@
 //  http://www.boost.org/LICENSE_1_0.txt
 //

+#include <boost/core/no_exceptions_support.hpp>
 #include <boost/current_function.hpp>
-#include <boost/config.hpp>
-#include <exception>
 #include <iostream>
 #include <iterator>
-#include <string>
 #include <cstdlib>
 #include <cstring>
 #include <cstddef>
-#include <cctype>
-#include <cstdio>
-
-#if defined(_MSC_VER) && defined(_CPPLIB_VER) && defined(_DEBUG)
-# include <crtdbg.h>
-#endif

 //  IDE's like Visual Studio perform better if output goes to std::cout or
 //  some other stream, so allow user to configure output stream:
@@ -56,13 +48,7 @@ public:
        : report_(false)
        , errors_(0) {
 #if defined(_MSC_VER) && (_MSC_VER > 1310)
-        // disable message boxes on assert(), abort()
        ::_set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
-#endif
-#if defined(_MSC_VER) && defined(_CPPLIB_VER) && defined(_DEBUG)
-        // disable message boxes on iterator debugging violations
-        _CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
-        _CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
 #endif
    }

@@ -97,21 +83,12 @@ inline int& test_errors()
    return test_results().errors();
 }

-inline bool test_impl(char const * expr, char const * file, int line, char const * function, bool v)
+inline void test_failed_impl(char const * expr, char const * file, int line, char const * function)
 {
-    if( v )
-    {
-        test_results();
-        return true;
-    }
-    else
-    {
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-          << file << "(" << line << "): test '" << expr << "' failed in function '"
-          << function << "'" << std::endl;
-        ++test_results().errors();
-        return false;
-    }
+    BOOST_LIGHTWEIGHT_TEST_OSTREAM
+      << file << "(" << line << "): test '" << expr << "' failed in function '"
+      << function << "'" << std::endl;
+    ++test_results().errors();
 }

 inline void error_impl(char const * msg, char const * file, int line, char const * function)
@@ -122,41 +99,25 @@ inline void error_impl(char const * msg, char const * file, int line, char const
    ++test_results().errors();
 }

-inline void throw_failed_impl(const char* expr, char const * excep, char const * file, int line, char const * function)
+inline void throw_failed_impl(char const * excep, char const * file, int line, char const * function)
 {
   BOOST_LIGHTWEIGHT_TEST_OSTREAM
-    << file << "(" << line << "): expression '" << expr << "' did not throw exception '" << excep << "' in function '"
+    << file << "(" << line << "): Exception '" << excep << "' not thrown in function '"
    << function << "'" << std::endl;
   ++test_results().errors();
 }

-inline void no_throw_failed_impl(const char* expr, const char* file, int line, const char* function)
-{
-    BOOST_LIGHTWEIGHT_TEST_OSTREAM
-        << file << "(" << line << "): expression '" << expr << "' threw an exception in function '"
-        << function << "'" << std::endl;
-   ++test_results().errors();
-}
-
-inline void no_throw_failed_impl(const char* expr, const char* what, const char* file, int line, const char* function)
-{
-    BOOST_LIGHTWEIGHT_TEST_OSTREAM
-        << file << "(" << line << "): expression '" << expr << "' threw an exception in function '"
-        << function << "': " << what << std::endl;
-   ++test_results().errors();
-}
-
 // In the comparisons below, it is possible that T and U are signed and unsigned integer types, which generates warnings in some compilers.
 // A cleaner fix would require common_type trait or some meta-programming, which would introduce a dependency on Boost.TypeTraits. To avoid
 // the dependency we just disable the warnings.
-#if defined(__clang__) && defined(__has_warning)
+#if defined(_MSC_VER)
+# pragma warning(push)
+# pragma warning(disable: 4389)
+#elif defined(__clang__) && defined(__has_warning)
 # if __has_warning("-Wsign-compare")
 #  pragma clang diagnostic push
 #  pragma clang diagnostic ignored "-Wsign-compare"
 # endif
-#elif defined(_MSC_VER)
-# pragma warning(push)
-# pragma warning(disable: 4389)
 #elif defined(__GNUC__) && !(defined(__INTEL_COMPILER) || defined(__ICL) || defined(__ICC) || defined(__ECC)) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 406
 # pragma GCC diagnostic push
 # pragma GCC diagnostic ignored "-Wsign-compare"
@@ -176,156 +137,67 @@ template<class T> inline const void* test_output_impl(T volatile* v) { return co
 inline const void* test_output_impl(std::nullptr_t) { return nullptr; }
 #endif

-// print chars as numeric
-
-inline int test_output_impl( signed char const& v ) { return v; }
-inline unsigned test_output_impl( unsigned char const& v ) { return v; }
-
-// Whether wchar_t is signed is implementation-defined
-
-template<bool Signed> struct lwt_long_type {};
-template<> struct lwt_long_type<true> { typedef long type; };
-template<> struct lwt_long_type<false> { typedef unsigned long type; };
-
-inline lwt_long_type<(static_cast<wchar_t>(-1) < static_cast<wchar_t>(0))>::type test_output_impl( wchar_t const& v ) { return v; }
-
-#if !defined( BOOST_NO_CXX11_CHAR16_T )
-inline unsigned long test_output_impl( char16_t const& v ) { return v; }
-#endif
-
-#if !defined( BOOST_NO_CXX11_CHAR32_T )
-inline unsigned long test_output_impl( char32_t const& v ) { return v; }
-#endif
-
-#if defined(_MSC_VER)
-#pragma warning(push)
-#pragma warning(disable: 4996)
-#endif
-
-inline std::string test_output_impl( char const& v )
-{
-    if( std::isprint( static_cast<unsigned char>( v ) ) )
-    {
-        return std::string( 1, v );
-    }
-    else
-    {
-        char buffer[ 8 ];
-        std::sprintf( buffer, "\\x%02X", static_cast<unsigned char>( v ) );
-
-        return buffer;
-    }
-}
-
-#if defined(_MSC_VER)
-#pragma warning(pop)
-#endif
-
-// predicates
-
-struct lw_test_eq
-{
+struct lw_test_eq {
    template <typename T, typename U>
    bool operator()(const T& t, const U& u) const { return t == u; }
+    static const char* op() { return "=="; }
 };

-struct lw_test_ne
-{
+struct lw_test_ne {
    template <typename T, typename U>
    bool operator()(const T& t, const U& u) const { return t != u; }
+    static const char* op() { return "!="; }
 };

-struct lw_test_lt
-{
+struct lw_test_lt {
    template <typename T, typename U>
    bool operator()(const T& t, const U& u) const { return t < u; }
+    static const char* op() { return "<"; }
 };

-struct lw_test_le
-{
+struct lw_test_le {
    template <typename T, typename U>
    bool operator()(const T& t, const U& u) const { return t <= u; }
+    static const char* op() { return "<="; }
 };

-struct lw_test_gt
-{
+struct lw_test_gt {
    template <typename T, typename U>
    bool operator()(const T& t, const U& u) const { return t > u; }
+    static const char* op() { return ">"; }
 };

-struct lw_test_ge
-{
+struct lw_test_ge {
    template <typename T, typename U>
    bool operator()(const T& t, const U& u) const { return t >= u; }
+    static const char* op() { return ">="; }
 };

-// lwt_predicate_name
-
-template<class T> char const * lwt_predicate_name( T const& )
-{
-    return "~=";
-}
-
-inline char const * lwt_predicate_name( lw_test_eq const& )
-{
-    return "==";
-}
-
-inline char const * lwt_predicate_name( lw_test_ne const& )
-{
-    return "!=";
-}
-
-inline char const * lwt_predicate_name( lw_test_lt const& )
-{
-    return "<";
-}
-
-inline char const * lwt_predicate_name( lw_test_le const& )
-{
-    return "<=";
-}
-
-inline char const * lwt_predicate_name( lw_test_gt const& )
-{
-    return ">";
-}
-
-inline char const * lwt_predicate_name( lw_test_ge const& )
-{
-    return ">=";
-}
-
-//
-
 template<class BinaryPredicate, class T, class U>
-inline bool test_with_impl(BinaryPredicate pred, char const * expr1, char const * expr2,
+inline void test_with_impl(BinaryPredicate pred, char const * expr1, char const * expr2,
                           char const * file, int line, char const * function,
                           T const & t, U const & u)
 {
    if( pred(t, u) )
    {
        test_results();
-        return true;
    }
    else
    {
        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " " << lwt_predicate_name(pred) << " " << expr2
-            << "' ('" << test_output_impl(t) << "' " << lwt_predicate_name(pred) << " '" << test_output_impl(u)
+            << file << "(" << line << "): test '" << expr1 << " " << pred.op() << " " << expr2
+            << "' ('" << test_output_impl(t) << "' " << pred.op() << " '" << test_output_impl(u)
            << "') failed in function '" << function << "'" << std::endl;
        ++test_results().errors();
-        return false;
    }
 }

-inline bool test_cstr_eq_impl( char const * expr1, char const * expr2,
+inline void test_cstr_eq_impl( char const * expr1, char const * expr2,
  char const * file, int line, char const * function, char const * const t, char const * const u )
 {
    if( std::strcmp(t, u) == 0 )
    {
        test_results();
-        return true;
    }
    else
    {
@@ -333,17 +205,15 @@ inline bool test_cstr_eq_impl( char const * expr1, char const * expr2,
            << file << "(" << line << "): test '" << expr1 << " == " << expr2 << "' ('" << t
            << "' == '" << u << "') failed in function '" << function << "'" << std::endl;
        ++test_results().errors();
-        return false;
    }
 }

-inline bool test_cstr_ne_impl( char const * expr1, char const * expr2,
+inline void test_cstr_ne_impl( char const * expr1, char const * expr2,
  char const * file, int line, char const * function, char const * const t, char const * const u )
 {
    if( std::strcmp(t, u) != 0 )
    {
        test_results();
-        return true;
    }
    else
    {
@@ -351,12 +221,11 @@ inline bool test_cstr_ne_impl( char const * expr1, char const * expr2,
            << file << "(" << line << "): test '" << expr1 << " != " << expr2 << "' ('" << t
            << "' != '" << u << "') failed in function '" << function << "'" << std::endl;
        ++test_results().errors();
-        return false;
    }
 }

 template<class FormattedOutputFunction, class InputIterator1, class InputIterator2>
-bool test_all_eq_impl(FormattedOutputFunction& output,
+void test_all_eq_impl(FormattedOutputFunction& output,
                      char const * file, int line, char const * function,
                      InputIterator1 first_begin, InputIterator1 first_end,
                      InputIterator2 second_begin, InputIterator2 second_end)
@@ -415,18 +284,16 @@ bool test_all_eq_impl(FormattedOutputFunction& output,
    if (error_count == 0)
    {
        test_results();
-        return true;
    }
    else
    {
        output << std::endl;
        ++test_results().errors();
-        return false;
    }
 }

 template<class FormattedOutputFunction, class InputIterator1, class InputIterator2, typename BinaryPredicate>
-bool test_all_with_impl(FormattedOutputFunction& output,
+void test_all_with_impl(FormattedOutputFunction& output,
                        char const * file, int line, char const * function,
                        InputIterator1 first_begin, InputIterator1 first_end,
                        InputIterator2 second_begin, InputIterator2 second_end,
@@ -486,22 +353,20 @@ bool test_all_with_impl(FormattedOutputFunction& output,
    if (error_count == 0)
    {
        test_results();
-        return true;
    }
    else
    {
        output << std::endl;
        ++test_results().errors();
-        return false;
    }
 }

-#if defined(__clang__) && defined(__has_warning)
+#if defined(_MSC_VER)
+# pragma warning(pop)
+#elif defined(__clang__) && defined(__has_warning)
 # if __has_warning("-Wsign-compare")
 #  pragma clang diagnostic pop
 # endif
-#elif defined(_MSC_VER)
-# pragma warning(pop)
 #elif defined(__GNUC__) && !(defined(__INTEL_COMPILER) || defined(__ICL) || defined(__ICC) || defined(__ECC)) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 406
 # pragma GCC diagnostic pop
 #endif
@@ -514,31 +379,27 @@ inline int report_errors()
    result.done();

    int errors = result.errors();
-
    if( errors == 0 )
    {
        BOOST_LIGHTWEIGHT_TEST_OSTREAM
          << "No errors detected." << std::endl;
+        return 0;
    }
    else
    {
        BOOST_LIGHTWEIGHT_TEST_OSTREAM
          << errors << " error" << (errors == 1? "": "s") << " detected." << std::endl;
+        return 1;
    }
-
-    // `return report_errors();` from main only supports 8 bit exit codes
-    return errors < 256? errors: 255;
 }

 } // namespace boost

-#define BOOST_TEST(expr) ( ::boost::detail::test_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, (expr)? true: false) )
+#define BOOST_TEST(expr) ((expr)? (void)::boost::detail::test_results(): ::boost::detail::test_failed_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION))
 #define BOOST_TEST_NOT(expr) BOOST_TEST(!(expr))

 #define BOOST_ERROR(msg) ( ::boost::detail::error_impl(msg, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )

-#define BOOST_TEST_WITH(expr1,expr2,predicate) ( ::boost::detail::test_with_impl(predicate, #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
-
 #define BOOST_TEST_EQ(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_eq(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
 #define BOOST_TEST_NE(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_ne(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )

@@ -554,38 +415,22 @@ inline int report_errors()
 #define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) ( ::boost::detail::test_all_with_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2, predicate) )

 #ifndef BOOST_NO_EXCEPTIONS
-   #define BOOST_TEST_THROWS( EXPR, EXCEP )                           \
-      try {                                                           \
-         EXPR;                                                        \
-         ::boost::detail::throw_failed_impl                           \
-         (#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
-      }                                                               \
-      catch(EXCEP const&) {                                           \
-         ::boost::detail::test_results();                             \
-      }                                                               \
-      catch(...) {                                                    \
-         ::boost::detail::throw_failed_impl                           \
-         (#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
-      }                                                               \
+   #define BOOST_TEST_THROWS( EXPR, EXCEP )                    \
+      try {                                                    \
+         EXPR;                                                 \
+         ::boost::detail::throw_failed_impl                    \
+         (#EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+      }                                                        \
+      catch(EXCEP const&) {                                    \
+         ::boost::detail::test_results();                      \
+      }                                                        \
+      catch(...) {                                             \
+         ::boost::detail::throw_failed_impl                    \
+         (#EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+      }                                                        \
   //
 #else
   #define BOOST_TEST_THROWS( EXPR, EXCEP )
 #endif

-#ifndef BOOST_NO_EXCEPTIONS
-#  define BOOST_TEST_NO_THROW(EXPR)                                    \
-    try {                                                              \
-        EXPR;                                                          \
-    } catch (const std::exception& e) {                                \
-        ::boost::detail::no_throw_failed_impl                          \
-        (#EXPR, e.what(), __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
-    } catch (...) {                                                    \
-        ::boost::detail::no_throw_failed_impl                          \
-        (#EXPR, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION);           \
-    }
-    //
-#else
-#  define BOOST_TEST_NO_THROW(EXPR) { EXPR; }
-#endif
-
 #endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_HPP
--- a/include/boost/core/lightweight_test_trait.hpp
+++ b/include/boost/core/lightweight_test_trait.hpp
@@ -9,21 +9,16 @@

 // boost/core/lightweight_test_trait.hpp
 //
-// BOOST_TEST_TRAIT_TRUE, BOOST_TEST_TRAIT_FALSE, BOOST_TEST_TRAIT_SAME
+// BOOST_TEST_TRAIT_TRUE, BOOST_TEST_TRAIT_FALSE
 //
 // Copyright 2014 Peter Dimov
 //
-// Copyright 2019 Glen Joseph Fernandes
-// (glenjofe@gmail.com)
-//
 // Distributed under the Boost Software License, Version 1.0.
 // See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt

 #include <boost/core/lightweight_test.hpp>
 #include <boost/core/typeinfo.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/config.hpp>

 namespace boost
 {
@@ -31,50 +26,6 @@ namespace boost
 namespace detail
 {

-template<class, int = 0> struct test_print { };
-
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T, 2>)
-{
-    return o << boost::core::demangled_name(BOOST_CORE_TYPEID(T));
-}
-
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T, 1>)
-{
-    return o << test_print<T, 2>();
-}
-
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<const T, 1>)
-{
-    return o << test_print<T, 2>() << " const";
-}
-
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<volatile T, 1>)
-{
-    return o << test_print<T, 2>() << " volatile";
-}
-
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<const volatile T, 1>)
-{
-    return o << test_print<T, 2>() << " const volatile";
-}
-
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T>)
-{
-    return o << test_print<T, 1>();
-}
-
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T&>)
-{
-    return o << test_print<T, 1>() << " &";
-}
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T&&>)
-{
-    return o << test_print<T, 1>() << " &&";
-}
-#endif
-
 template< class T > inline void test_trait_impl( char const * trait, void (*)( T ),
  bool expected, char const * file, int line, char const * function )
 {
@@ -95,31 +46,6 @@ template< class T > inline void test_trait_impl( char const * trait, void (*)( T
    }
 }

-template<class T> inline bool test_trait_same_impl_( T )
-{
-    return T::value;
-}
-
-template<class T1, class T2> inline void test_trait_same_impl( char const * types,
-  boost::core::is_same<T1, T2> same, char const * file, int line, char const * function )
-{
-    if( test_trait_same_impl_( same ) )
-    {
-        test_results();
-    }
-    else
-    {
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test 'is_same<" << types << ">'"
-            << " failed in function '" << function
-            << "' ('" << test_print<T1>()
-            << "' != '" << test_print<T2>() << "')"
-            << std::endl;
-
-        ++test_results().errors();
-    }
-}
-
 } // namespace detail

 } // namespace boost
@@ -127,11 +53,4 @@ template<class T1, class T2> inline void test_trait_same_impl( char const * type
 #define BOOST_TEST_TRAIT_TRUE(type) ( ::boost::detail::test_trait_impl(#type, (void(*)type)0, true, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
 #define BOOST_TEST_TRAIT_FALSE(type) ( ::boost::detail::test_trait_impl(#type, (void(*)type)0, false, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )

-#if defined(__GNUC__)
-// ignoring -Wvariadic-macros with #pragma doesn't work under GCC
-# pragma GCC system_header
-#endif
-
-#define BOOST_TEST_TRAIT_SAME(...) ( ::boost::detail::test_trait_same_impl(#__VA_ARGS__, ::boost::core::is_same<__VA_ARGS__>(), __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
-
 #endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_TRAIT_HPP
--- a/include/boost/core/no_exceptions_support.hpp
+++ b/include/boost/core/no_exceptions_support.hpp
@@ -29,24 +29,12 @@
 #    define BOOST_RETHROW throw;
 #    define BOOST_CATCH_END }
 #else
-#    if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
+#    if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
 #        define BOOST_TRY { if ("")
 #        define BOOST_CATCH(x) else if (!"")
-#    elif !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
+#    else
 #        define BOOST_TRY { if (true)
 #        define BOOST_CATCH(x) else if (false)
-#    else
-         // warning C4127: conditional expression is constant
-#        define BOOST_TRY { \
-             __pragma(warning(push)) \
-             __pragma(warning(disable: 4127)) \
-             if (true) \
-             __pragma(warning(pop))
-#        define BOOST_CATCH(x) else \
-             __pragma(warning(push)) \
-             __pragma(warning(disable: 4127)) \
-             if (false) \
-             __pragma(warning(pop))
 #    endif
 #    define BOOST_RETHROW
 #    define BOOST_CATCH_END }
--- a/include/boost/core/noinit_adaptor.hpp
+++ b/include/boost/core/noinit_adaptor.hpp
@@ -1,87 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#ifndef BOOST_CORE_NOINIT_ADAPTOR_HPP
-#define BOOST_CORE_NOINIT_ADAPTOR_HPP
-
-#include <boost/core/allocator_access.hpp>
-
-namespace boost {
-
-template<class A>
-struct noinit_adaptor
-    : A {
-    template<class U>
-    struct rebind {
-        typedef noinit_adaptor<typename allocator_rebind<A, U>::type> other;
-    };
-
-    noinit_adaptor()
-        : A() { }
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-    template<class U>
-    noinit_adaptor(U&& u) BOOST_NOEXCEPT
-        : A(std::forward<U>(u)) { }
-#else
-    template<class U>
-    noinit_adaptor(const U& u) BOOST_NOEXCEPT
-        : A(u) { }
-
-    template<class U>
-    noinit_adaptor(U& u) BOOST_NOEXCEPT
-        : A(u) { }
-#endif
-
-    template<class U>
-    noinit_adaptor(const noinit_adaptor<U>& u) BOOST_NOEXCEPT
-        : A(static_cast<const A&>(u)) { }
-
-    template<class U>
-    void construct(U* p) {
-        ::new((void*)p) U;
-    }
-
-#if defined(BOOST_NO_CXX11_ALLOCATOR)
-    template<class U, class V>
-    void construct(U* p, const V& v) {
-        ::new((void*)p) U(v);
-    }
-#endif
-
-    template<class U>
-    void destroy(U* p) {
-        p->~U();
-    }
-};
-
-template<class T, class U>
-inline bool
-operator==(const noinit_adaptor<T>& lhs,
-    const noinit_adaptor<U>& rhs) BOOST_NOEXCEPT
-{
-    return static_cast<const T&>(lhs) == static_cast<const U&>(rhs);
-}
-
-template<class T, class U>
-inline bool
-operator!=(const noinit_adaptor<T>& lhs,
-    const noinit_adaptor<U>& rhs) BOOST_NOEXCEPT
-{
-    return !(lhs == rhs);
-}
-
-template<class A>
-inline noinit_adaptor<A>
-noinit_adapt(const A& a) BOOST_NOEXCEPT
-{
-    return noinit_adaptor<A>(a);
-}
-
-} /* boost */
-
-#endif
--- a/include/boost/core/noncopyable.hpp
+++ b/include/boost/core/noncopyable.hpp
@@ -38,7 +38,8 @@ namespace noncopyable_  // protection from unintended ADL
  class noncopyable: base_token
  {
  protected:
-#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)\
+      && !BOOST_WORKAROUND(__ICC, <= 1600)
      BOOST_CONSTEXPR noncopyable() = default;
      ~noncopyable() = default;
 #else
--- a/include/boost/core/nvp.hpp
+++ b/include/boost/core/nvp.hpp
@@ -1,57 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#ifndef BOOST_CORE_NVP_HPP
-#define BOOST_CORE_NVP_HPP
-
-#include <boost/core/addressof.hpp>
-#include <boost/config.hpp>
-
-namespace boost {
-namespace serialization {
-
-template<class T>
-class nvp {
-public:
-    nvp(const char* n, T& v) BOOST_NOEXCEPT
-        : n_(n)
-        , v_(boost::addressof(v)) { }
-
-    const char* name() const BOOST_NOEXCEPT {
-        return n_;
-    }
-
-    T& value() const BOOST_NOEXCEPT {
-        return *v_;
-    }
-
-    const T& const_value() const BOOST_NOEXCEPT {
-        return *v_;
-    }
-
-private:
-    const char* n_;
-    T* v_;
-};
-
-template<class T>
-inline const nvp<T>
-make_nvp(const char* n, T& v) BOOST_NOEXCEPT
-{
-    return nvp<T>(n, v);
-}
-
-} /* serialization */
-
-using serialization::nvp;
-using serialization::make_nvp;
-
-} /* boost */
-
-#define BOOST_NVP(v) boost::make_nvp(BOOST_STRINGIZE(v), v)
-
-#endif
--- a/include/boost/core/pointer_traits.hpp
+++ b/include/boost/core/pointer_traits.hpp
@@ -13,7 +13,6 @@ Distributed under the Boost Software License, Version 1.0.
 #include <memory>
 #else
 #include <boost/core/addressof.hpp>
-#include <cstddef>
 #endif

 namespace boost {
--- a/include/boost/core/quick_exit.hpp
+++ b/include/boost/core/quick_exit.hpp
@@ -16,7 +16,7 @@
 //  http://www.boost.org/LICENSE_1_0.txt)

 #include <boost/config.hpp>
-#include <stdlib.h>
+#include <cstdlib>

 #if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)

--- a/include/boost/core/ref.hpp
+++ b/include/boost/core/ref.hpp
@@ -10,7 +10,6 @@
 #include <boost/config.hpp>
 #include <boost/config/workaround.hpp>
 #include <boost/core/addressof.hpp>
-#include <boost/core/enable_if.hpp>

 //
 //  ref.hpp - ref/cref, useful helper functions
@@ -47,26 +46,6 @@ namespace boost

 #endif

-namespace detail
-{
-
-template< class Y, class T > struct ref_convertible
-{
-    typedef char (&yes) [1];
-    typedef char (&no)  [2];
-
-    static yes f( T* );
-    static no  f( ... );
-
-    enum _vt { value = sizeof( (f)( static_cast<Y*>(0) ) ) == sizeof(yes) };
-};
-
-struct ref_empty
-{
-};
-
-} // namespace detail
-
 // reference_wrapper

 /**
@@ -108,21 +87,6 @@ public:
 public:
 #endif

-    template<class Y> friend class reference_wrapper;
-
-    /**
-     Constructs a `reference_wrapper` object that stores the
-     reference stored in the compatible `reference_wrapper` `r`.
-
-     @remark Only enabled when `Y*` is convertible to `T*`.
-     @remark Does not throw.
-    */
-    template<class Y> reference_wrapper( reference_wrapper<Y> r,
-        typename enable_if_c<boost::detail::ref_convertible<Y, T>::value,
-            boost::detail::ref_empty>::type = boost::detail::ref_empty() ): t_( r.t_ )
-    {
-    }
-
    /**
     @return The stored reference.
     @remark Does not throw.
@@ -152,7 +116,7 @@ private:
 /**
 @cond
 */
-#if defined( BOOST_BORLANDC ) && BOOST_WORKAROUND( BOOST_BORLANDC, BOOST_TESTED_AT(0x581) )
+#if defined( __BORLANDC__ ) && BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT(0x581) )
 #  define BOOST_REF_CONST
 #else
 #  define BOOST_REF_CONST const
--- a/include/boost/core/swap.hpp
+++ b/include/boost/core/swap.hpp
@@ -23,12 +23,9 @@

 #include <boost/core/enable_if.hpp>
 #include <boost/config.hpp>
-#if __cplusplus >= 201103L || defined(BOOST_DINKUMWARE_STDLIB)
-#include <utility> // for std::swap (C++11)
-#else
-#include <algorithm> // for std::swap (C++98)
-#endif
-#include <cstddef> // for std::size_t
+#include <utility> //for std::swap (C++11)
+#include <algorithm> //for std::swap (C++98)
+#include <cstddef> //for std::size_t

 namespace boost_swap_impl
 {
--- a/include/boost/core/type_name.hpp
+++ b/include/boost/core/type_name.hpp
@@ -1,855 +0,0 @@
-#ifndef BOOST_CORE_TYPE_NAME_HPP_INCLUDED
-#define BOOST_CORE_TYPE_NAME_HPP_INCLUDED
-
-// MS compatible compilers support #pragma once
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-// std::string boost::core::type_name<T>()
-//
-// Copyright 2021 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/demangle.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/config.hpp>
-#include <string>
-#include <functional>
-#include <memory>
-#include <utility>
-#include <cstdio>
-#include <cstddef>
-#include <iosfwd>
-#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
-# include <string_view>
-#endif
-
-namespace boost
-{
-namespace core
-{
-
-namespace detail
-{
-
-// tn_identity
-
-template<class T> struct tn_identity
-{
-    typedef T type;
-};
-
-// tn_enable_if
-
-template<bool C, class T> struct tn_enable_if
-{
-};
-
-template<class T> struct tn_enable_if<true, T>
-{
-    typedef T type;
-};
-
-// tn_is_reference
-
-template<class T> struct tn_is_reference
-{
-    static const bool value = false;
-};
-
-template<class T> struct tn_is_reference<T&>
-{
-    static const bool value = true;
-};
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-
-template<class T> struct tn_is_reference<T&&>
-{
-    static const bool value = true;
-};
-
-#endif
-
-// tn_remove_const
-
-template<class T> struct tn_remove_const
-{
-    typedef T type;
-};
-
-template<class T> struct tn_remove_const<T const>
-{
-    typedef T type;
-};
-
-// tn_is_function (also catches references but that's OK)
-
-#if defined(BOOST_MSVC)
-# pragma warning(push)
-# pragma warning(disable: 4180 4181)
-#endif
-
-template<class T, class U = typename tn_remove_const<T>::type> struct tn_is_function: core::is_same<U, U const>
-{
-};
-
-#if defined(BOOST_MSVC)
-# pragma warning(pop)
-#endif
-
-#if !defined(BOOST_NO_TYPEID)
-
-// typeid_name
-
-template<class T> std::string typeid_name()
-{
-    std::string r = boost::core::demangle( typeid(T).name() );
-
-#if defined(_MSC_VER)
-
-    if( r.substr( 0, 6 ) == "class " )
-    {
-        r = r.substr( 6 );
-    }
-
-    if( r.substr( 0, 7 ) == "struct " )
-    {
-        r = r.substr( 7 );
-    }
-
-    if( r.substr( 0, 5 ) == "enum " )
-    {
-        r = r.substr( 5 );
-    }
-
-#endif
-
-    // libc++ inline namespace
-
-    if( r.substr( 0, 10 ) == "std::__1::" )
-    {
-        r = "std::" + r.substr( 10 );
-    }
-
-    // libstdc++ inline namespace
-
-    if( r.substr( 0, 14 ) == "std::__cxx11::" )
-    {
-        r = "std::" + r.substr( 14 );
-    }
-
-#if defined(BOOST_MSVC) && BOOST_MSVC == 1600
-
-    // msvc-10.0 puts TR1 things in std::tr1
-
-    if( r.substr( 0, 10 ) == "std::tr1::" )
-    {
-        r = "std::" + r.substr( 10 );
-    }
-
-#endif
-
-    return r;
-}
-
-// template names
-
-template<class T> std::string class_template_name()
-{
-    std::string r = typeid_name<T>();
-    return r.substr( 0, r.find( '<' ) );
-}
-
-template<class T> std::string sequence_template_name()
-{
-    return class_template_name<T>();
-}
-
-template<class T> std::string set_template_name()
-{
-    return class_template_name<T>();
-}
-
-template<class T> std::string map_template_name()
-{
-    return class_template_name<T>();
-}
-
-template<class T> std::string array_template_name()
-{
-    return class_template_name<T>();
-}
-
-#else // #if !defined(BOOST_NO_TYPEID)
-
-template<class T> std::string typeid_name()
-{
-    return "_Tp";
-}
-
-template<class T> std::string class_template_name()
-{
-    return "_Tm";
-}
-
-template<class T> std::string sequence_template_name()
-{
-    return "_Sq";
-}
-
-template<class T> std::string set_template_name()
-{
-    return "_St";
-}
-
-template<class T> std::string map_template_name()
-{
-    return "_Mp";
-}
-
-template<class T> std::string array_template_name()
-{
-    return "_Ar";
-}
-
-#endif
-
-// tn_to_string
-
-#if defined(BOOST_MSVC)
-# pragma warning( push )
-# pragma warning( disable: 4996 )
-#endif
-
-inline std::string tn_to_string( std::size_t n )
-{
-    char buffer[ 32 ];
-    std::sprintf( buffer, "%lu", static_cast< unsigned long >( n ) );
-
-    return buffer;
-}
-
-#if defined(BOOST_MSVC)
-# pragma warning( pop )
-#endif
-
-// tn_add_each
-
-#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-
-template<class T> int tn_add_each_impl( std::string& st )
-{
-    if( !st.empty() ) st += ", ";
-    st += type_name( tn_identity<T>(), "" );
-    return 0;
-}
-
-template<class... T> std::string tn_add_each()
-{
-    std::string st;
-
-    typedef int A[ sizeof...(T) + 1 ];
-    (void)A{ 0, tn_add_each_impl<T>( st )... };
-
-    return st;
-}
-
-#endif
-
-// primary
-
-template<class T> std::string type_name( tn_identity<T>, std::string const& suffix )
-{
-    return typeid_name<T>() + suffix;
-}
-
-// integrals
-
-inline std::string type_name( tn_identity<unsigned>, std::string const& suffix )
-{
-    return "unsigned" + suffix;
-}
-
-#if defined(_MSC_VER)
-
-inline std::string type_name( tn_identity<long long>, std::string const& suffix )
-{
-    return "long long" + suffix;
-}
-
-inline std::string type_name( tn_identity<unsigned long long>, std::string const& suffix )
-{
-    return "unsigned long long" + suffix;
-}
-
-#endif
-
-#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
-
-inline std::string type_name( tn_identity<char8_t>, std::string const& suffix )
-{
-    return "char8_t" + suffix;
-}
-
-#endif
-
-// cv
-
-#if !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
-
-template<class T> std::string type_name( tn_identity<T const>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), " const" + suffix );
-}
-
-template<class T> std::string type_name( tn_identity<T volatile>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), " volatile" + suffix );
-}
-
-template<class T> std::string type_name( tn_identity<T const volatile>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), " const volatile" + suffix );
-}
-
-#else
-
-template<class T>
-typename tn_enable_if<!tn_is_function<T>::value, std::string>::type
-type_name( tn_identity<T const>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), " const" + suffix );
-}
-
-template<class T>
-typename tn_enable_if<!tn_is_function<T>::value, std::string>::type
-type_name( tn_identity<T volatile>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), " volatile" + suffix );
-}
-
-template<class T>
-typename tn_enable_if<!tn_is_function<T>::value, std::string>::type
-type_name( tn_identity<T const volatile>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), " const volatile" + suffix );
-}
-
-#endif
-
-// refs
-
-#if !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
-
-template<class T> std::string type_name( tn_identity<T&>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), "&" + suffix );
-}
-
-#else
-
-template<class T>
-typename tn_enable_if<!tn_is_reference<T>::value, std::string>::type
-type_name( tn_identity<T&>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), "&" + suffix );
-}
-
-#endif
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-
-template<class T> std::string type_name( tn_identity<T&&>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), "&&" + suffix );
-}
-
-#endif
-
-// function types
-
-#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-
-template<class R, class... A> std::string function_type_name( tn_identity<R(A...)>, std::string const& trailer, std::string const& suffix )
-{
-    std::string r = type_name( tn_identity<R>(), "" );
-
-    if( !suffix.empty() )
-    {
-        r += '(';
-
-        if( suffix[ 0 ] == ' ' )
-        {
-            r += suffix.substr( 1 );
-        }
-        else
-        {
-            r += suffix;
-        }
-
-        r += ')';
-    }
-
-    r += '(' + tn_add_each<A...>() + ')';
-    r += trailer;
-
-    return r;
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...)>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), "", suffix );
-}
-
-#if !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) volatile>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " volatile", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const volatile>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const volatile", suffix );
-}
-
-#endif
-
-#if !defined(BOOST_NO_CXX11_REF_QUALIFIERS)
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) &>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " &", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const &>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const &", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) volatile &>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " volatile &", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const volatile &>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const volatile &", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) &&>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " &&", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const &&>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const &&", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) volatile &&>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " volatile &&", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const volatile &&>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const volatile &&", suffix );
-}
-
-#endif
-
-#if defined( __cpp_noexcept_function_type ) || defined( _NOEXCEPT_TYPES_SUPPORTED )
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) volatile noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " volatile noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const volatile noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const volatile noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) & noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " & noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const & noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const & noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) volatile & noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " volatile & noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const volatile & noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const volatile & noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) && noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " && noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const && noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const && noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) volatile && noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " volatile && noexcept", suffix );
-}
-
-template<class R, class... A> std::string type_name( tn_identity<R(A...) const volatile && noexcept>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const volatile && noexcept", suffix );
-}
-
-#endif
-
-#endif // #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-
-// pointers
-
-template<class T> std::string type_name( tn_identity<T*>, std::string const& suffix )
-{
-    return type_name( tn_identity<T>(), "*" + suffix );
-}
-
-// arrays
-
-template<class T> std::pair<std::string, std::string> array_prefix_suffix( tn_identity<T> )
-{
-    return std::pair<std::string, std::string>( type_name( tn_identity<T>(), "" ), "" );
-}
-
-template<class T, std::size_t N> std::pair<std::string, std::string> array_prefix_suffix( tn_identity<T[N]> )
-{
-    std::pair<std::string, std::string> r = array_prefix_suffix( tn_identity<T>() );
-
-    r.second = '[' + tn_to_string( N ) + ']' + r.second;
-
-    return r;
-}
-
-template<class T> std::string array_type_name( tn_identity<T[]>, std::string const& suffix )
-{
-    std::pair<std::string, std::string> r = array_prefix_suffix( tn_identity<T>() );
-
-    if( suffix.empty() )
-    {
-        return r.first + "[]" + r.second;
-    }
-    else
-    {
-        return r.first + '(' + suffix + ")[]" + r.second;
-    }
-}
-
-template<class T> std::string type_name( tn_identity<T[]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T[]>(), suffix );
-}
-
-template<class T> std::string type_name( tn_identity<T const[]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T const[]>(), suffix );
-}
-
-template<class T> std::string type_name( tn_identity<T volatile[]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T volatile[]>(), suffix );
-}
-
-template<class T> std::string type_name( tn_identity<T const volatile[]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T const volatile[]>(), suffix );
-}
-
-template<class T, std::size_t N> std::string array_type_name( tn_identity<T[N]>, std::string const& suffix )
-{
-    std::pair<std::string, std::string> r = array_prefix_suffix( tn_identity<T[N]>() );
-
-    if( suffix.empty() )
-    {
-        return r.first + r.second;
-    }
-    else
-    {
-        return r.first + '(' + suffix + ")" + r.second;
-    }
-}
-
-template<class T, std::size_t N> std::string type_name( tn_identity<T[N]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T[N]>(), suffix );
-}
-
-template<class T, std::size_t N> std::string type_name( tn_identity<T const[N]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T const[N]>(), suffix );
-}
-
-template<class T, std::size_t N> std::string type_name( tn_identity<T volatile[N]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T volatile[N]>(), suffix );
-}
-
-template<class T, std::size_t N> std::string type_name( tn_identity<T const volatile[N]>, std::string const& suffix )
-{
-    return array_type_name( tn_identity<T const volatile[N]>(), suffix );
-}
-
-// pointers to members
-
-template<class R, class T> std::string type_name( tn_identity<R T::*>, std::string const& suffix )
-{
-    return type_name( tn_identity<R>(), ' ' + type_name( tn_identity<T>(), "" ) + "::*" + suffix );
-}
-
-#if defined(BOOST_MSVC) && BOOST_MSVC <= 1900 && !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-
-template<class R, class T, class... A> std::string type_name( tn_identity<R(T::*)(A...) const>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const", ' ' + type_name( tn_identity<T>(), "" ) + "::*" + suffix );
-}
-
-template<class R, class T, class... A> std::string type_name( tn_identity<R(T::*)(A...) volatile>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " volatile", ' ' + type_name( tn_identity<T>(), "" ) + "::*" + suffix );
-}
-
-template<class R, class T, class... A> std::string type_name( tn_identity<R(T::*)(A...) const volatile>, std::string const& suffix )
-{
-    return function_type_name( tn_identity<R(A...)>(), " const volatile", ' ' + type_name( tn_identity<T>(), "" ) + "::*" + suffix );
-}
-
-#endif
-
-// nullptr_t
-
-#if !defined(BOOST_NO_CXX11_NULLPTR)
-
-inline std::string type_name( tn_identity<std::nullptr_t>, std::string const& suffix )
-{
-    return "std::nullptr_t" + suffix;
-}
-
-#endif
-
-// strings
-
-template<template<class Ch, class Tr, class A> class L, class Ch> std::string type_name( tn_identity< L<Ch, std::char_traits<Ch>, std::allocator<Ch> > >, std::string const& suffix )
-{
-    std::string tn = sequence_template_name< L<Ch, std::char_traits<Ch>, std::allocator<Ch> > >();
-    return tn + '<' + type_name( tn_identity<Ch>(), "" ) + '>' + suffix;
-}
-
-inline std::string type_name( tn_identity<std::string>, std::string const& suffix )
-{
-    return "std::string" + suffix;
-}
-
-inline std::string type_name( tn_identity<std::wstring>, std::string const& suffix )
-{
-    return "std::wstring" + suffix;
-}
-
-#if !defined(BOOST_NO_CXX11_CHAR16_T)
-
-inline std::string type_name( tn_identity<std::u16string>, std::string const& suffix )
-{
-    return "std::u16string" + suffix;
-}
-
-#endif
-
-#if !defined(BOOST_NO_CXX11_CHAR32_T)
-
-inline std::string type_name( tn_identity<std::u32string>, std::string const& suffix )
-{
-    return "std::u32string" + suffix;
-}
-
-#endif
-
-#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
-
-inline std::string type_name( tn_identity<std::basic_string<char8_t>>, std::string const& suffix )
-{
-    return "std::u8string" + suffix;
-}
-
-#endif
-
-// string views (et al)
-
-template<template<class Ch, class Tr> class L, class Ch> std::string type_name( tn_identity< L<Ch, std::char_traits<Ch> > >, std::string const& suffix )
-{
-    std::string tn = sequence_template_name< L<Ch, std::char_traits<Ch> > >();
-    return tn + '<' + type_name( tn_identity<Ch>(), "" ) + '>' + suffix;
-}
-
-// needed for libstdc++
-inline std::string type_name( tn_identity<std::ostream>, std::string const& suffix )
-{
-    return "std::ostream" + suffix;
-}
-
-#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW)
-
-inline std::string type_name( tn_identity<std::string_view>, std::string const& suffix )
-{
-    return "std::string_view" + suffix;
-}
-
-inline std::string type_name( tn_identity<std::wstring_view>, std::string const& suffix )
-{
-    return "std::wstring_view" + suffix;
-}
-
-#if !defined(BOOST_NO_CXX11_CHAR16_T)
-
-inline std::string type_name( tn_identity<std::u16string_view>, std::string const& suffix )
-{
-    return "std::u16string_view" + suffix;
-}
-
-#endif
-
-#if !defined(BOOST_NO_CXX11_CHAR32_T)
-
-inline std::string type_name( tn_identity<std::u32string_view>, std::string const& suffix )
-{
-    return "std::u32string_view" + suffix;
-}
-
-#endif
-
-#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
-
-inline std::string type_name( tn_identity<std::basic_string_view<char8_t>>, std::string const& suffix )
-{
-    return "std::u8string_view" + suffix;
-}
-
-#endif
-
-#endif
-
-// class templates
-
-#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-
-template<template<class...> class L, class... T> std::string type_name( tn_identity< L<T...> >, std::string const& suffix )
-{
-    std::string tn = class_template_name< L<T...> >();
-    std::string st = tn_add_each<T...>();
-
-    return tn + '<' + st + '>' + suffix;
-}
-
-#else
-
-template<template<class T1> class L, class T1> std::string type_name( tn_identity< L<T1> >, std::string const& suffix )
-{
-    std::string tn = class_template_name< L<T1> >();
-    return tn + '<' + type_name( tn_identity<T1>(), "" ) + '>' + suffix;
-}
-
-template<template<class T1, class T2> class L, class T1, class T2> std::string type_name( tn_identity< L<T1, T2> >, std::string const& suffix )
-{
-    std::string tn = class_template_name< L<T1, T2> >();
-    return tn + '<' + type_name( tn_identity<T1>(), "" ) + ", " + type_name( tn_identity<T2>(), "" ) + '>' + suffix;
-}
-
-#endif
-
-// sequence containers
-
-template<template<class T, class A> class L, class T> std::string type_name( tn_identity< L<T, std::allocator<T> > >, std::string const& suffix )
-{
-    std::string tn = sequence_template_name< L<T, std::allocator<T> > >();
-    return tn + '<' + type_name( tn_identity<T>(), "" ) + '>' + suffix;
-}
-
-// set
-
-template<template<class T, class Pr, class A> class L, class T> std::string type_name( tn_identity< L<T, std::less<T>, std::allocator<T> > >, std::string const& suffix )
-{
-    std::string tn = set_template_name< L<T, std::less<T>, std::allocator<T> > >();
-    return tn + '<' + type_name( tn_identity<T>(), "" ) + '>' + suffix;
-}
-
-// map
-
-template<template<class T, class U, class Pr, class A> class L, class T, class U> std::string type_name( tn_identity< L<T, U, std::less<T>, std::allocator<std::pair<T const, U> > > >, std::string const& suffix )
-{
-    std::string tn = map_template_name< L<T, U, std::less<T>, std::allocator<std::pair<T const, U> > > >();
-    return tn + '<' + type_name( tn_identity<T>(), "" ) + ", " + type_name( tn_identity<U>(), "" ) +  '>' + suffix;
-}
-
-#if !defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
-
-// unordered_set
-
-template<template<class T, class H, class Eq, class A> class L, class T> std::string type_name( tn_identity< L<T, std::hash<T>, std::equal_to<T>, std::allocator<T> > >, std::string const& suffix )
-{
-    std::string tn = set_template_name< L<T, std::hash<T>, std::equal_to<T>, std::allocator<T> > >();
-    return tn + '<' + type_name( tn_identity<T>(), "" ) + '>' + suffix;
-}
-
-// unordered_map
-
-template<template<class T, class U, class H, class Eq, class A> class L, class T, class U> std::string type_name( tn_identity< L<T, U, std::hash<T>, std::equal_to<T>, std::allocator<std::pair<T const, U> > > >, std::string const& suffix )
-{
-    std::string tn = map_template_name< L<T, U, std::hash<T>, std::equal_to<T>, std::allocator<std::pair<T const, U> > > >();
-    return tn + '<' + type_name( tn_identity<T>(), "" ) + ", " + type_name( tn_identity<U>(), "" ) +  '>' + suffix;
-}
-
-#endif
-
-// array
-
-template<template<class T, std::size_t N> class L, class T, std::size_t N> std::string type_name( tn_identity< L<T, N> >, std::string const& suffix )
-{
-    std::string tn = array_template_name< L<T, N> >();
-    return tn + '<' + type_name( tn_identity<T>(), "" ) + ", " + tn_to_string( N ) + '>' + suffix;
-}
-
-} // namespace detail
-
-template<class T> std::string type_name()
-{
-    return core::detail::type_name( core::detail::tn_identity<T>(), "" );
-}
-
-} // namespace core
-} // namespace boost
-
-#endif  // #ifndef BOOST_CORE_TYPE_NAME_HPP_INCLUDED
--- a/include/boost/core/typeinfo.hpp
+++ b/include/boost/core/typeinfo.hpp
@@ -47,7 +47,7 @@ public:

    bool operator==( typeinfo const& rhs ) const
    {
-#if ( defined(_WIN32) || defined(__CYGWIN__) ) && ( defined(__GNUC__) || defined(__clang__) ) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
+#if ( defined(_WIN32) || defined(__CYGWIN__) ) && defined(__GNUC__) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)

        return lib_id_ == rhs.lib_id_? this == &rhs: std::strcmp( name_, rhs.name_ ) == 0;

@@ -65,7 +65,7 @@ public:

    bool before( typeinfo const& rhs ) const
    {
-#if ( defined(_WIN32) || defined(__CYGWIN__) ) && ( defined(__GNUC__) || defined(__clang__) ) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
+#if ( defined(_WIN32) || defined(__CYGWIN__) ) && defined(__GNUC__) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)

        return lib_id_ == rhs.lib_id_? std::less< typeinfo const* >()( this, &rhs ): std::strcmp( name_, rhs.name_ ) < 0;

--- a/include/boost/core/uncaught_exceptions.hpp
+++ b/include/boost/core/uncaught_exceptions.hpp
@@ -1,5 +1,5 @@
 /*
- *          Copyright Andrey Semashev 2018 - 2020.
+ *             Copyright Andrey Semashev 2018.
 * Distributed under the Boost Software License, Version 1.0.
 *    (See accompanying file LICENSE_1_0.txt or copy at
 *          https://www.boost.org/LICENSE_1_0.txt)
@@ -9,7 +9,7 @@
 * \author Andrey Semashev
 * \date   2018-11-10
 *
- * \brief  This header provides an `uncaught_exceptions` function implementation, which was introduced in C++17.
+ * \brief  This header provides an `uncaught_exception` function implementation, which was introduced in C++17.
 *
 * The code in this file is based on the implementation by Evgeny Panasyuk:
 *
@@ -26,24 +26,9 @@
 #pragma once
 #endif

-#if (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411)
-#if defined(__APPLE__)
-#include <Availability.h>
-// Apple systems only support std::uncaught_exceptions starting with specific versions:
-// - Mac OS >= 10.12
-// - iOS >= 10.0
-// - tvOS >= 10.0
-// - watchOS >= 3.0
-// https://github.com/boostorg/core/issues/80
-#if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200) || \
-    (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000)
-#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
-#endif
-#else
-#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
-#endif // defined(__APPLE__)
-// Visual Studio 14.0 supports N4152 std::uncaught_exceptions() but doesn't define __cpp_lib_uncaught_exceptions
-#elif (defined(_MSC_VER) && _MSC_VER >= 1900)
+// Visual Studio 14 supports N4152 std::uncaught_exceptions()
+#if (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411) || \
+    (defined(_MSC_VER) && _MSC_VER >= 1900)
 #define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
 #endif

@@ -61,45 +46,20 @@
 #if defined(BOOST_CORE_HAS_CXXABI_H)
 // MinGW GCC 4.4 seem to not work the same way the newer GCC versions do. As a result, __cxa_get_globals based implementation will always return 0.
 // Just disable it for now and fall back to std::uncaught_exception().
-// On AIX, xlclang++ does have cxxabi.h but doesn't have __cxa_get_globals (https://github.com/boostorg/core/issues/78).
-#if !( \
-        (defined(__MINGW32__) && (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 405)) || \
-        defined(__ibmxl__) \
-    )
-#include <cxxabi.h>
-#include <cstring>
+#if !defined(__MINGW32__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)))
 #define BOOST_CORE_HAS_CXA_GET_GLOBALS
-// At least on MinGW and Linux, only GCC since 4.7 declares __cxa_get_globals() in cxxabi.h. Older versions of GCC do not expose this function but it's there.
-// On OpenBSD, it seems, the declaration is also missing.
-// Note that at least on FreeBSD 11, cxxabi.h declares __cxa_get_globals with a different exception specification, so we can't declare the function unconditionally.
-// On Linux with clang and libc++ and on OS X, there is a version of cxxabi.h from libc++abi that doesn't declare __cxa_get_globals, but provides __cxa_uncaught_exceptions.
-// The function only appeared in version _LIBCPPABI_VERSION >= 1002 of the library. Unfortunately, there are linking errors about undefined reference to __cxa_uncaught_exceptions
-// on Ubuntu Trusty and OS X, so we avoid using it and forward-declare __cxa_get_globals instead.
-// On QNX SDP 7.0 (QCC 5.4.0), there are multiple cxxabi.h, one from glibcxx from gcc and another from libc++abi from LLVM. Which one is included will be determined by the qcc
-// command line arguments (-V and/or -Y; http://www.qnx.com/developers/docs/7.0.0/#com.qnx.doc.neutrino.utilities/topic/q/qcc.html). The LLVM libc++abi is missing the declaration
-// of __cxa_get_globals but it is also patched by QNX developers to not define _LIBCPPABI_VERSION. Older QNX SDP versions, up to and including 6.6, don't provide LLVM and libc++abi.
-// See https://github.com/boostorg/core/issues/59.
-#if !defined(__FreeBSD__) && \
-    ( \
-        (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407) || \
-        defined(__OpenBSD__) || \
-        (defined(__QNXNTO__) && !defined(__GLIBCXX__) && !defined(__GLIBCPP__)) || \
-        defined(_LIBCPPABI_VERSION) \
-    )
+#include <cxxabi.h>
+// Only GCC 4.7 declares __cxa_get_globals() in cxxabi.h, older compilers do not expose this function but it's there
+#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407
 namespace __cxxabiv1 {
 struct __cxa_eh_globals;
-#if defined(__OpenBSD__)
-extern "C" __cxa_eh_globals* __cxa_get_globals();
-#else
 extern "C" __cxa_eh_globals* __cxa_get_globals() BOOST_NOEXCEPT_OR_NOTHROW __attribute__((__const__));
-#endif
 } // namespace __cxxabiv1
-#endif
+#endif // defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407
 #endif
 #endif // defined(BOOST_CORE_HAS_CXXABI_H)

 #if defined(_MSC_VER) && _MSC_VER >= 1400
-#include <cstring>
 #define BOOST_CORE_HAS_GETPTD
 namespace boost {
 namespace core {
@@ -129,14 +89,10 @@ inline unsigned int uncaught_exceptions() BOOST_NOEXCEPT
    return static_cast< unsigned int >(std::uncaught_exceptions());
 #elif defined(BOOST_CORE_HAS_CXA_GET_GLOBALS)
    // Tested on {clang 3.2,GCC 3.5.6,GCC 4.1.2,GCC 4.4.6,GCC 4.4.7}x{x32,x64}
-    unsigned int count;
-    std::memcpy(&count, reinterpret_cast< const unsigned char* >(::abi::__cxa_get_globals()) + sizeof(void*), sizeof(count)); // __cxa_eh_globals::uncaughtExceptions, x32 offset - 0x4, x64 - 0x8
-    return count;
+    return *(reinterpret_cast< const unsigned int* >(reinterpret_cast< const char* >(::abi::__cxa_get_globals()) + sizeof(void*))); // __cxa_eh_globals::uncaughtExceptions, x32 offset - 0x4, x64 - 0x8
 #elif defined(BOOST_CORE_HAS_GETPTD)
    // MSVC specific. Tested on {MSVC2005SP1,MSVC2008SP1,MSVC2010SP1,MSVC2012}x{x32,x64}.
-    unsigned int count;
-    std::memcpy(&count, static_cast< const unsigned char* >(boost::core::detail::_getptd()) + (sizeof(void*) == 8u ? 0x100 : 0x90), sizeof(count)); // _tiddata::_ProcessingThrow, x32 offset - 0x90, x64 - 0x100
-    return count;
+    return *(reinterpret_cast< const unsigned int* >(static_cast< const char* >(boost::core::detail::_getptd()) + (sizeof(void*) == 8 ? 0x100 : 0x90))); // _tiddata::_ProcessingThrow, x32 offset - 0x90, x64 - 0x100
 #else
    // Portable C++03 implementation. Does not allow to detect multiple nested exceptions.
    return static_cast< unsigned int >(std::uncaught_exception());
--- a/include/boost/core/use_default.hpp
+++ b/include/boost/core/use_default.hpp
@@ -1,17 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#ifndef BOOST_CORE_USE_DEFAULT_HPP
-#define BOOST_CORE_USE_DEFAULT_HPP
-
-namespace boost {
-
-struct use_default { };
-
-} /* boost */
-
-#endif
--- a/include/boost/detail/iterator.hpp
+++ b/include/boost/detail/iterator.hpp
@@ -6,11 +6,7 @@
 #ifndef ITERATOR_DWA122600_HPP_
 #define ITERATOR_DWA122600_HPP_

-// This header is obsolete and deprecated.
-
-#include <boost/config/header_deprecated.hpp>
-
-BOOST_HEADER_DEPRECATED("<iterator>")
+// This header is obsolete and will be deprecated.

 #include <iterator>
 #if defined(__SUNPRO_CC) && (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION))
--- a/include/boost/detail/no_exceptions_support.hpp
+++ b/include/boost/detail/no_exceptions_support.hpp
@@ -12,10 +12,6 @@
 // The header file at this path is deprecated;
 // use boost/core/no_exceptions_support.hpp instead.

-#include <boost/config/header_deprecated.hpp>
-
-BOOST_HEADER_DEPRECATED("<boost/core/no_exceptions_support.hpp>")
-
 #include <boost/core/no_exceptions_support.hpp>

 #endif
--- a/include/boost/detail/scoped_enum_emulation.hpp
+++ b/include/boost/detail/scoped_enum_emulation.hpp
@@ -12,10 +12,6 @@
 // The header file at this path is deprecated;
 // use boost/core/scoped_enum.hpp instead.

-#include <boost/config/header_deprecated.hpp>
-
-BOOST_HEADER_DEPRECATED("<boost/core/scoped_enum.hpp>")
-
 #include <boost/core/scoped_enum.hpp>

 #endif
--- a/include/boost/detail/sp_typeinfo.hpp
+++ b/include/boost/detail/sp_typeinfo.hpp
@@ -18,9 +18,6 @@
 //  http://www.boost.org/LICENSE_1_0.txt)

 #include <boost/core/typeinfo.hpp>
-#include <boost/config/header_deprecated.hpp>
-
-BOOST_HEADER_DEPRECATED( "<boost/core/typeinfo.hpp>" )

 namespace boost
 {
--- a/meta/libraries.json
+++ b/meta/libraries.json
@@ -8,15 +8,14 @@
        "Andrey Semashev"
    ],
    "maintainers": [
-        "Peter Dimov <pdimov -at- gmail.com>",
+        "Peter Dimov <pdimov -at- pdimov.com>",
        "Glen Fernandes <glenjofe -at- gmail.com>",
        "Andrey Semashev <andrey.semashev -at- gmail.com>"
    ],
    "description": "A collection of simple core utilities with minimal dependencies.",
    "category": [
        "Miscellaneous"
-    ],
-    "cxxstd": "03"
+    ]
    },
    {
        "key": "utility/enable_if",
@@ -34,8 +33,7 @@
        "maintainers": [
            "Jaakko Jarvi <jarvi -at- cs.tamu.edu>",
            "Jeremiah Willcock <jewillco -at- osl.iu.edu>"
-        ],
-        "cxxstd": "03"
+        ]
    },
    {
        "key": "utility/swap",
@@ -51,8 +49,7 @@
        ],
        "maintainers": [
            "Joseph Gauterin <joseph.gauterin -at- googlemail.com>"
-        ],
-        "cxxstd": "03"
+        ]
    },
    {
        "key": "bind/ref",
@@ -70,7 +67,6 @@
        ],
        "category": [
            "Function-objects"
-        ],
-        "cxxstd": "03"
+        ]
    }
 ]
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,13 +0,0 @@
-# Copyright 2018, 2019 Peter Dimov
-# Distributed under the Boost Software License, Version 1.0.
-# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
-
-include(BoostTestJamfile OPTIONAL RESULT_VARIABLE HAVE_BOOST_TEST)
-
-if(HAVE_BOOST_TEST)
-
-boost_test_jamfile(FILE Jamfile.v2 LINK_LIBRARIES Boost::core Boost::static_assert Boost::type_traits Boost::throw_exception)
-
-endif()
-
-add_subdirectory(swap)
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -35,10 +35,7 @@ compile-fail ref_rv_fail4.cpp ;
 compile-fail ref_rv_fail5.cpp ;
 compile-fail ref_implicit_fail.cpp ;
 compile-fail ref_implicit_fail2.cpp ;
-compile-fail ref_implicit_fail3.cpp ;
-compile-fail ref_implicit_fail4.cpp ;
 run ref_cv_test.cpp ;
-run ref_conversion_test.cpp ;

 run eif_constructors.cpp ;
 run eif_dummy_arg_disambiguation.cpp ;
@@ -58,12 +55,10 @@ compile-fail explicit_operator_bool_compile_fail_conv_pvoid.cpp ;
 compile-fail explicit_operator_bool_compile_fail_delete.cpp ;
 compile-fail explicit_operator_bool_compile_fail_shift.cpp ;

-compile ignore_unused_test.cpp
-  : <warnings>extra
-    <toolset>gcc:<warnings-as-errors>on
-    <toolset>clang:<warnings-as-errors>on
-    <toolset>msvc:<warnings-as-errors>on ;
-
+compile ignore_unused_test.cpp : <toolset>gcc-4.8:<cxxflags>"-Wunused-variable -Wunused-local-typedefs -Werror"
+                                   <toolset>gcc:<cxxflags>"-Wunused-variable -Werror"
+                                   <toolset>clang:<cxxflags>"-Wunused-variable -Werror"
+                                   <toolset>msvc:<cxxflags>"/we4100 /we4101" ;
 run sp_typeinfo_test.cpp ;
 run sp_typeinfo_test.cpp : : : <rtti>off : sp_typeinfo_test_no_rtti ;

@@ -71,39 +66,16 @@ run visit_each_test.cpp ;

 run get_pointer_test.cpp ;

-local pedantic-errors = <warnings>pedantic
-    <toolset>msvc:<warnings-as-errors>on
-    <toolset>gcc:<warnings-as-errors>on
-    <toolset>clang:<warnings-as-errors>on ;
-
-run lightweight_test_test.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_test.cpp : : :
-  <exception-handling>off $(pedantic-errors) : lightweight_test_test_no_except ;
-run lightweight_test_test2.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_all_with_test.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_lt_le_test.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_gt_ge_test.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_eq_nullptr.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_test3.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_test4.cpp
-  : : : $(pedantic-errors) ;
-run lightweight_test_test5.cpp
-  : : : $(pedantic-errors)
-    <toolset>gcc-4.4.7:<cxxflags>-Wno-sign-compare
-    <toolset>gcc-4.4:<cxxflags>-Wno-sign-compare
-  ;
-run lightweight_test_test6.cpp
-  : : : $(pedantic-errors) ;
-
-run-fail lightweight_test_all_eq_test.cpp ;
-run-fail lightweight_test_all_with_fail.cpp ;
+run lightweight_test_test.cpp ;
+run lightweight_test_test.cpp : : : <exception-handling>off : lightweight_test_test_no_except ;
+run lightweight_test_test2.cpp ;
+run lightweight_test_all_eq_test.cpp ;
+run lightweight_test_all_with_test.cpp ;
+run lightweight_test_all_with_fail.cpp ;
+run lightweight_test_lt_le_test.cpp ;
+run lightweight_test_gt_ge_test.cpp ;
+run lightweight_test_eq_nullptr.cpp ;
+run lightweight_test_test3.cpp ;

 run-fail lightweight_test_fail.cpp ;
 run-fail lightweight_test_fail2.cpp ;
@@ -117,23 +89,12 @@ run-fail lightweight_test_fail8.cpp ;
 run-fail lightweight_test_fail8.cpp : : : <rtti>off : lightweight_test_fail8_no_rtti ;
 run-fail lightweight_test_fail9.cpp ;
 run-fail lightweight_test_fail10.cpp ;
-run-fail lightweight_test_fail11.cpp : ;
-run-fail lightweight_test_fail12.cpp ;
-run-fail lightweight_test_fail13.cpp ;
-run-fail lightweight_test_fail14.cpp ;
-run-fail lightweight_test_fail15.cpp ;
+run-fail lightweight_test_fail11.cpp ;
 run-fail lightweight_test_lt_fail.cpp ;
 run-fail lightweight_test_le_fail.cpp ;
 run-fail lightweight_test_gt_fail.cpp ;
 run-fail lightweight_test_ge_fail.cpp ;

-run lightweight_test_bool.cpp
-  : : : $(pedantic-errors) ;
-
-run lightweight_test_with_test.cpp
-  : : : $(pedantic-errors) ;
-run-fail lightweight_test_with_fail.cpp ;
-
 run is_same_test.cpp ;

 run typeinfo_test.cpp ;
@@ -142,12 +103,9 @@ run typeinfo_test.cpp : : : <rtti>off : typeinfo_test_no_rtti ;
 run iterator_test.cpp ;
 run detail_iterator_test.cpp ;

-run demangle_test.cpp
-  : : : <test-info>always_show_run_output ;
-
-run demangled_name_test.cpp
-  : : : <test-info>always_show_run_output ;
+run demangle_test.cpp  : : : <test-info>always_show_run_output ;

+run demangled_name_test.cpp  : : : <test-info>always_show_run_output ;
 run demangled_name_test.cpp  : : : <rtti>off <test-info>always_show_run_output : demangled_name_test_no_rtti ;

 run scoped_enum.cpp ;
@@ -166,86 +124,22 @@ run to_address_test.cpp ;
 run exchange_test.cpp ;
 run exchange_move_test.cpp ;

-run first_scalar_test.cpp ;
-compile first_scalar_constexpr_test.cpp ;
-
 run empty_value_test.cpp ;
 run empty_value_size_test.cpp ;
-run empty_value_final_test.cpp ;

 run quick_exit_test.cpp ;
 run-fail quick_exit_fail.cpp ;

-compile use_default_test.cpp ;
-
-run default_allocator_test.cpp
-  : : : <warnings>pedantic
-        <toolset>msvc:<warnings-as-errors>on
-        <toolset>gcc:<warnings-as-errors>on
-        <toolset>clang:<warnings-as-errors>on ;
-
-run noinit_adaptor_test.cpp ;
-run alloc_construct_test.cpp ;
-run alloc_construct_throws_test.cpp ;
-run alloc_construct_cxx11_test.cpp ;
-
-run nvp_test.cpp ;
-
-run allocator_value_type_test.cpp ;
-run allocator_pointer_test.cpp ;
-run allocator_const_pointer_test.cpp ;
-run allocator_void_pointer_test.cpp ;
-run allocator_const_void_pointer_test.cpp ;
-run allocator_difference_type_test.cpp ;
-run allocator_size_type_test.cpp ;
-run allocator_pocca_test.cpp ;
-run allocator_pocma_test.cpp ;
-run allocator_pocs_test.cpp ;
-run allocator_is_always_equal_test.cpp ;
-run allocator_rebind_test.cpp ;
-run allocator_allocate_test.cpp ;
-run allocator_allocate_hint_test.cpp ;
-run allocator_deallocate_test.cpp ;
-run allocator_max_size_test.cpp ;
-run allocator_soccc_test.cpp ;
-
 lib lib_typeid : lib_typeid.cpp : <link>shared:<define>LIB_TYPEID_DYN_LINK=1 ;

 run test_lib_typeid.cpp lib_typeid : : : <link>shared : test_lib_typeid_shared ;
 run test_lib_typeid.cpp lib_typeid : : : <link>static : test_lib_typeid_static ;

 run test_lib_typeid.cpp lib_typeid : : : <link>shared <rtti>off : test_lib_typeid_shared_no_rtti ;
-run test_lib_typeid.cpp lib_typeid : : : <link>static <rtti>off : test_lib_typeid_static_no_rtti ;
+run test_lib_typeid.cpp lib_typeid : : : <link>static <rtti>off  : test_lib_typeid_static_no_rtti ;

-run test_lib_typeid2.cpp lib_typeid : : : <link>shared : test_lib_typeid2_shared ;
-run test_lib_typeid2.cpp lib_typeid : : : <link>static : test_lib_typeid2_static ;
-
-run test_lib_typeid2.cpp lib_typeid : : : <link>shared <rtti>off : test_lib_typeid2_shared_no_rtti ;
-run test_lib_typeid2.cpp lib_typeid : : : <link>static <rtti>off : test_lib_typeid2_static_no_rtti ;
-
-run uncaught_exceptions.cpp
-  : : : <exception-handling>on ;
-run uncaught_exceptions_np.cpp
-  : : : <exception-handling>on ;
-
-run no_exceptions_support_test.cpp ;
-run no_exceptions_support_test.cpp : : : <exception-handling>off : no_exceptions_support_test_nx ;
-
-run cmath_test.cpp ;
-run cmath_test.cpp : : : <define>BOOST_CORE_USE_GENERIC_CMATH <toolset>msvc-8.0:<build>no : cmath_test_generic ;
-
-run bit_cast_test.cpp ;
-run bit_rotate_test.cpp ;
-run bit_countr_test.cpp ;
-run bit_countl_test.cpp ;
-run bit_width_test.cpp ;
-run has_single_bit_test.cpp ;
-run bit_floor_test.cpp ;
-run bit_ceil_test.cpp ;
-run bit_popcount_test.cpp ;
-run bit_endian_test.cpp ;
-
-run type_name_test.cpp ;
+run uncaught_exceptions.cpp : : : <exception-handling>on ;
+run uncaught_exceptions_np.cpp : : : <exception-handling>on ;

 use-project /boost/core/swap : ./swap ;
 build-project ./swap ;
--- a/test/addressof_fn_test.cpp
+++ b/test/addressof_fn_test.cpp
@@ -16,7 +16,7 @@
 //  http://www.boost.org/LICENSE_1_0.txt

 #include <boost/utility/addressof.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>


 void f0()
--- a/test/addressof_np_test.cpp
+++ b/test/addressof_np_test.cpp
@@ -7,7 +7,7 @@
 //

 #include <boost/utility/addressof.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>
 #include <cstddef>

 #if defined( BOOST_NO_CXX11_NULLPTR )
--- a/test/addressof_test.cpp
+++ b/test/addressof_test.cpp
@@ -20,7 +20,7 @@
 #pragma warning(pop)
 #endif

-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>

 template<class T> void scalar_test( T * = 0 )
 {
--- a/test/addressof_test2.cpp
+++ b/test/addressof_test2.cpp
@@ -22,7 +22,7 @@
 #pragma warning(pop)
 #endif

-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>

 template<class T> void scalar_test( T * = 0 )
 {
--- a/test/alloc_construct_cxx11_test.cpp
+++ b/test/alloc_construct_cxx11_test.cpp
@@ -1,78 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/config.hpp>
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-#include <boost/core/alloc_construct.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-class type {
-public:
-    explicit type(int x)
-        : value_(x) { }
-
-    int value() const {
-        return value_;
-    }
-
-    static int count;
-
-private:
-    type(const type&);
-    type& operator=(const type&);
-
-    int value_;
-};
-
-int type::count = 0;
-
-template<class T>
-struct creator {
-    typedef T value_type;
-
-    creator() { }
-
-    template<class U>
-    creator(const creator<U>&) { }
-
-    T* allocate(std::size_t size) {
-        return static_cast<T*>(::operator new(sizeof(T) * size));
-    }
-
-    void deallocate(T* ptr, std::size_t) {
-        ::operator delete(ptr);
-    }
-
-    template<class V>
-    void construct(type* ptr, const V& value) {
-        ::new(static_cast<void*>(ptr)) type(value + 1);
-        ++type::count;
-    }
-
-    void destroy(type* ptr) {
-        ptr->~type();
-        --type::count;
-    }
-};
-
-int main()
-{
-    creator<type> a;
-    type* p = a.allocate(1);
-    boost::alloc_construct(a, p, 1);
-    BOOST_TEST_EQ(type::count, 1);
-    BOOST_TEST_EQ(p->value(), 2);
-    boost::alloc_destroy(a, p);
-    BOOST_TEST_EQ(type::count, 0);
-    return boost::report_errors();
-}
-#else
-int main()
-{
-    return 0;
-}
-#endif
--- a/test/alloc_construct_test.cpp
+++ b/test/alloc_construct_test.cpp
@@ -1,135 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/alloc_construct.hpp>
-#include <boost/core/default_allocator.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-class type {
-public:
-    explicit type(int x = 0, int y = 0)
-        : value_(x + y) {
-        ++count;
-    }
-
-    type(const type& other)
-        : value_(other.value_) {
-        ++count;
-    }
-
-    ~type() {
-        --count;
-    }
-
-    int value() const {
-        return value_;
-    }
-
-    static int count;
-
-private:
-    int value_;
-};
-
-int type::count = 0;
-
-void test_construct()
-{
-    boost::default_allocator<type> a;
-    type* p = a.allocate(1);
-    boost::alloc_construct(a, p);
-    BOOST_TEST_EQ(type::count, 1);
-    BOOST_TEST_EQ(p->value(), 0);
-    boost::alloc_destroy(a, p);
-    BOOST_TEST_EQ(type::count, 0);
-    a.deallocate(p, 1);
-}
-
-void test_construct_value()
-{
-    boost::default_allocator<type> a;
-    type* p = a.allocate(1);
-    boost::alloc_construct(a, p, 1);
-    BOOST_TEST_EQ(type::count, 1);
-    BOOST_TEST_EQ(p->value(), 1);
-    boost::alloc_destroy(a, p);
-    BOOST_TEST_EQ(type::count, 0);
-    a.deallocate(p, 1);
-}
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
-    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-void test_construct_args()
-{
-    boost::default_allocator<type> a;
-    type* p = a.allocate(1);
-    boost::alloc_construct(a, p, 1, 2);
-    BOOST_TEST_EQ(type::count, 1);
-    BOOST_TEST_EQ(p->value(), 3);
-    boost::alloc_destroy(a, p);
-    BOOST_TEST_EQ(type::count, 0);
-    a.deallocate(p, 1);
-}
-#endif
-
-void test_construct_n()
-{
-    boost::default_allocator<type> a;
-    type* p = a.allocate(3);
-    boost::alloc_construct_n(a, p, 3);
-    BOOST_TEST_EQ(type::count, 3);
-    BOOST_TEST_EQ(p[0].value(), 0);
-    BOOST_TEST_EQ(p[1].value(), 0);
-    BOOST_TEST_EQ(p[2].value(), 0);
-    boost::alloc_destroy_n(a, p, 3);
-    BOOST_TEST_EQ(type::count, 0);
-    a.deallocate(p, 3);
-}
-
-void test_construct_n_list()
-{
-    boost::default_allocator<type> a;
-    type* p = a.allocate(3);
-    type q(1);
-    boost::alloc_construct_n(a, p, 3, &q, 1);
-    BOOST_TEST_EQ(type::count, 4);
-    BOOST_TEST_EQ(p[0].value(), 1);
-    BOOST_TEST_EQ(p[1].value(), 1);
-    BOOST_TEST_EQ(p[2].value(), 1);
-    boost::alloc_destroy_n(a, p, 3);
-    BOOST_TEST_EQ(type::count, 1);
-    a.deallocate(p, 3);
-}
-
-void test_construct_n_iterator()
-{
-    boost::default_allocator<type> a;
-    type* p = a.allocate(3);
-    type l[] = { type(1), type(2), type(3) };
-    boost::alloc_construct_n(a, p, 3, &l[0]);
-    BOOST_TEST_EQ(type::count, 6);
-    BOOST_TEST_EQ(p[0].value(), 1);
-    BOOST_TEST_EQ(p[1].value(), 2);
-    BOOST_TEST_EQ(p[2].value(), 3);
-    boost::alloc_destroy_n(a, p, 3);
-    BOOST_TEST_EQ(type::count, 3);
-    a.deallocate(p, 3);
-}
-
-int main()
-{
-    test_construct();
-    test_construct_value();
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
-    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-    test_construct_args();
-#endif
-    test_construct_n();
-    test_construct_n_list();
-    test_construct_n_iterator();
-    return boost::report_errors();
-}
--- a/test/alloc_construct_throws_test.cpp
+++ b/test/alloc_construct_throws_test.cpp
@@ -1,46 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/alloc_construct.hpp>
-#include <boost/core/default_allocator.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-class type {
-public:
-    type() {
-        if (count == 4) {
-            throw true;
-        }
-        ++count;
-    }
-
-    ~type() {
-        --count;
-    }
-
-    static int count;
-
-private:
-    type(const type&);
-    type& operator=(const type&);
-};
-
-int type::count = 0;
-
-int main()
-{
-    boost::default_allocator<type> a;
-    type* p = a.allocate(5);
-    try {
-        boost::alloc_construct_n(a, p, 5);
-        BOOST_ERROR("construct_n did not throw");
-    } catch (...) {
-        BOOST_TEST_EQ(type::count, 0);
-    }
-    a.deallocate(p, 5);
-    return boost::report_errors();
-}
--- a/test/allocator_allocate_hint_test.cpp
+++ b/test/allocator_allocate_hint_test.cpp
@@ -1,59 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef std::size_t size_type;
-    typedef T* pointer;
-    typedef const T* const_pointer;
-    template<class U>
-    struct rebind {
-        typedef A1<U> other;
-    };
-    A1()
-        : value() { }
-    T* allocate(std::size_t n, const void*) {
-        value = n;
-        return 0;
-    }
-    std::size_t value;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    A2()
-        : value() { }
-    T* allocate(std::size_t n) {
-        value = n;
-        return 0;
-    }
-    std::size_t value;
-};
-#endif
-
-int main()
-{
-    {
-        A1<int> a;
-        BOOST_TEST_NOT(boost::allocator_allocate(a, 5, 0));
-        BOOST_TEST_EQ(a.value, 5);
-    }
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    {
-        A2<int> a;
-        BOOST_TEST_NOT(boost::allocator_allocate(a, 5, 0));
-        BOOST_TEST_EQ(a.value, 5);
-    }
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_allocate_test.cpp
+++ b/test/allocator_allocate_test.cpp
@@ -1,31 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template<class T>
-struct A {
-    typedef T value_type;
-    typedef T* pointer;
-    typedef std::size_t size_type;
-    A()
-        : value() { }
-    T* allocate(std::size_t n) {
-        value = n;
-        return 0;
-    }
-    std::size_t value;
-};
-
-int main()
-{
-    A<int> a;
-    BOOST_TEST_NOT(boost::allocator_allocate(a, 5));
-    BOOST_TEST_EQ(a.value, 5);
-    return boost::report_errors();
-}
--- a/test/allocator_const_pointer_test.cpp
+++ b/test/allocator_const_pointer_test.cpp
@@ -1,34 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef int* const_pointer;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
-        boost::allocator_const_pointer<A1<char> >::type>));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<const int*,
-        boost::allocator_const_pointer<A2<int> >::type>));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_const_void_pointer_test.cpp
+++ b/test/allocator_const_void_pointer_test.cpp
@@ -1,39 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef int* const_pointer;
-    typedef int* const_void_pointer;
-    template<class U>
-    struct rebind {
-        typedef A1<U> other;
-    };
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
-        boost::allocator_const_void_pointer<A1<char> >::type>));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<const void*,
-        boost::allocator_const_void_pointer<A2<int> >::type>));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_construct_test.cpp
+++ b/test/allocator_construct_test.cpp
@@ -1,46 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    A1() { }
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    A2() { }
-    template<class U, class V>
-    void construct(U* p, const V& v) {
-        ::new((void*)p) U(v + 1);
-    }
-};
-#endif
-
-int main()
-{
-    {
-        A1<int> a;
-        int i = 0;
-        boost::allocator_construct(a, &i, 5);
-        BOOST_TEST_EQ(i, 5);
-    }
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    {
-        A1<int> a;
-        int i = 0;
-        boost::allocator_construct(a, &i, 5);
-        BOOST_TEST_EQ(i, 6);
-    }
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_deallocate_test.cpp
+++ b/test/allocator_deallocate_test.cpp
@@ -1,30 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template<class T>
-struct A {
-    typedef T value_type;
-    typedef T* pointer;
-    typedef std::size_t size_type;
-    A()
-        : value() { }
-    void deallocate(T*, std::size_t n) {
-        value = n;
-    }
-    std::size_t value;
-};
-
-int main()
-{
-    A<int> a;
-    boost::allocator_deallocate(a, 0, 5);
-    BOOST_TEST_EQ(a.value, 5);
-    return boost::report_errors();
-}
--- a/test/allocator_destroy_test.cpp
+++ b/test/allocator_destroy_test.cpp
@@ -1,62 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-struct S {
-    static int count;
-    S() {
-        ++count;
-    }
-    S(const S&) {
-        ++count;
-    }
-    ~S() {
-        --count;
-    }
-};
-
-int S::count = 0;
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    A1() { }
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    A2() { }
-    template<class U>
-    void destroy(U* p) {
-        *p = U();
-    }
-};
-#endif
-
-int main()
-{
-    {
-        A1<int> a;
-        S s;
-        boost::allocator_destroy(a, &s);
-        BOOST_TEST_EQ(S::count, 0);
-        ::new((void*)&s) S();
-    }
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    {
-        A1<int> a;
-        int i = 5;
-        boost::allocator_destroy(a, &i);
-        BOOST_TEST_EQ(i, 0);
-    }
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_difference_type_test.cpp
+++ b/test/allocator_difference_type_test.cpp
@@ -1,34 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef short difference_type;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<short,
-        boost::allocator_difference_type<A1<char> >::type>));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<std::ptrdiff_t,
-        boost::allocator_difference_type<A2<int> >::type>));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_is_always_equal_test.cpp
+++ b/test/allocator_is_always_equal_test.cpp
@@ -1,47 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    int value;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-
-template<class T>
-struct A3 {
-    typedef T value_type;
-    typedef std::false_type is_always_equal;
-};
-
-template<class T>
-struct A4 {
-    typedef T value_type;
-    typedef std::true_type is_always_equal;
-    int value;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_FALSE((boost::allocator_is_always_equal<A1<int> >::type));
- #if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::allocator_is_always_equal<A2<int> >::type));
-    BOOST_TEST_TRAIT_FALSE((boost::allocator_is_always_equal<A3<int> >::type));
-    BOOST_TEST_TRAIT_TRUE((boost::allocator_is_always_equal<A4<int> >::type));
- #endif
-    return boost::report_errors();
-}
--- a/test/allocator_max_size_test.cpp
+++ b/test/allocator_max_size_test.cpp
@@ -1,39 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <limits>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef short size_type;
-    A1() { }
-    short max_size() const {
-        return 1;
-    }
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    typedef short size_type;
-    A2() { }
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_EQ(boost::allocator_max_size(A1<int>()), 1);
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_LE(boost::allocator_max_size(A2<int>()),
-        (std::numeric_limits<short>::max)());
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_pocca_test.cpp
+++ b/test/allocator_pocca_test.cpp
@@ -1,34 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    typedef std::true_type propagate_on_container_copy_assignment;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_FALSE((boost::
-        allocator_propagate_on_container_copy_assignment<A1<int> >::type));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::
-        allocator_propagate_on_container_copy_assignment<A2<int> >::type));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_pocma_test.cpp
+++ b/test/allocator_pocma_test.cpp
@@ -1,34 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    typedef std::true_type propagate_on_container_move_assignment;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_FALSE((boost::
-        allocator_propagate_on_container_move_assignment<A1<int> >::type));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::
-        allocator_propagate_on_container_move_assignment<A2<int> >::type));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_pocs_test.cpp
+++ b/test/allocator_pocs_test.cpp
@@ -1,34 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    typedef std::true_type propagate_on_container_swap;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_FALSE((boost::
-        allocator_propagate_on_container_swap<A1<int> >::type));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::
-        allocator_propagate_on_container_swap<A2<int> >::type));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_pointer_test.cpp
+++ b/test/allocator_pointer_test.cpp
@@ -1,34 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef int* pointer;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
-        boost::allocator_pointer<A1<char> >::type>));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
-        boost::allocator_pointer<A2<int> >::type>));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_rebind_test.cpp
+++ b/test/allocator_rebind_test.cpp
@@ -1,37 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    template<class>
-    struct rebind {
-        typedef A1<int> other;
-    };
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<A1<int>,
-        boost::allocator_rebind<A1<char>, bool>::type>));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<A2<int>,
-        boost::allocator_rebind<A2<char>, int>::type>));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_size_type_test.cpp
+++ b/test/allocator_size_type_test.cpp
@@ -1,35 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef int size_type;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int,
-        boost::allocator_size_type<A1<char> >::type>));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<
-        std::make_unsigned<std::ptrdiff_t>::type,
-        boost::allocator_size_type<A2<int> >::type>));
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_soccc_test.cpp
+++ b/test/allocator_soccc_test.cpp
@@ -1,41 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    A1(int n)
-        : value(n) { }
-    int value;
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-    A2(int n)
-        : value(n) { }
-    A2 select_on_container_copy_construction() const {
-        return A2(value + 1);
-    }
-    int value;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_EQ(1, boost::
-        allocator_select_on_container_copy_construction(A1<int>(1)).value);
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_EQ(2, boost::
-        allocator_select_on_container_copy_construction(A2<int>(1)).value);
-#endif
-    return boost::report_errors();
-}
--- a/test/allocator_value_type_test.cpp
+++ b/test/allocator_value_type_test.cpp
@@ -1,22 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A {
-    typedef T value_type;
-};
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int,
-        boost::allocator_value_type<A<int> >::type>));
-    return boost::report_errors();
-}
--- a/test/allocator_void_pointer_test.cpp
+++ b/test/allocator_void_pointer_test.cpp
@@ -1,39 +0,0 @@
-/*
-Copyright 2020 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/allocator_access.hpp>
-#include <boost/core/is_same.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-
-template<class T>
-struct A1 {
-    typedef T value_type;
-    typedef int* pointer;
-    typedef int* void_pointer;
-    template<class U>
-    struct rebind {
-        typedef A1<U> other;
-    };
-};
-
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-template<class T>
-struct A2 {
-    typedef T value_type;
-};
-#endif
-
-int main()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
-        boost::allocator_void_pointer<A1<char> >::type>));
-#if !defined(BOOST_NO_CXX11_ALLOCATOR)
-    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<void*,
-        boost::allocator_void_pointer<A2<int> >::type>));
-#endif
-    return boost::report_errors();
-}
--- a/test/bit_cast_test.cpp
+++ b/test/bit_cast_test.cpp
@@ -1,29 +0,0 @@
-// Test for boost/core/bit.hpp (bit_cast)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/cstdint.hpp>
-#include <cstring>
-
-int main()
-{
-    {
-        float x = 0.89f;
-        boost::uint32_t y = boost::core::bit_cast<boost::uint32_t>( x );
-
-        BOOST_TEST( std::memcmp( &x, &y, sizeof(x) ) == 0 );
-    }
-
-    {
-        double x = 0.89;
-        boost::uint64_t y = boost::core::bit_cast<boost::uint64_t>( x );
-
-        BOOST_TEST( std::memcmp( &x, &y, sizeof(x) ) == 0 );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_ceil_test.cpp
+++ b/test/bit_ceil_test.cpp
@@ -1,65 +0,0 @@
-// Test for boost/core/bit.hpp (bit_ceil)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/core/detail/splitmix64.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-
-template<class T> void test_bit_ceil( T x )
-{
-    if( !boost::core::has_single_bit( x ) )
-    {
-        x >>= 1;
-    }
-
-    T y = boost::core::bit_ceil( x );
-
-    if( x == 0 )
-    {
-        BOOST_TEST_EQ( y, 0 );
-    }
-    else
-    {
-        BOOST_TEST( boost::core::has_single_bit( y ) );
-        BOOST_TEST_GE( +y, +x );
-        BOOST_TEST_LT( y >> 1, +x );
-    }
-}
-
-int main()
-{
-    {
-        test_bit_ceil( static_cast<unsigned char>( 0 ) );
-        test_bit_ceil( static_cast<unsigned short>( 0 ) );
-        test_bit_ceil( static_cast<unsigned int>( 0 ) );
-        test_bit_ceil( static_cast<unsigned long>( 0 ) );
-        test_bit_ceil( static_cast<unsigned long long>( 0 ) );
-    }
-
-    {
-        test_bit_ceil( static_cast<boost::uint8_t>( 0x80 ) );
-        test_bit_ceil( static_cast<boost::uint16_t>( 0x8000 ) );
-        test_bit_ceil( static_cast<boost::uint32_t>( 0x80000000 ) );
-        test_bit_ceil( static_cast<boost::uint64_t>( 0x8000000000000000 ) );
-    }
-
-    boost::detail::splitmix64 rng;
-
-    for( int i = 0; i < 1000; ++i )
-    {
-        boost::uint64_t x = rng();
-
-        test_bit_ceil( static_cast<unsigned char>( x ) );
-        test_bit_ceil( static_cast<unsigned short>( x ) );
-        test_bit_ceil( static_cast<unsigned int>( x ) );
-        test_bit_ceil( static_cast<unsigned long>( x ) );
-        test_bit_ceil( static_cast<unsigned long long>( x ) );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_countl_test.cpp
+++ b/test/bit_countl_test.cpp
@@ -1,46 +0,0 @@
-// Test for boost/core/bit.hpp (countl_zero, countl_one)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/core/detail/splitmix64.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-
-template<class T> void test_countl( T x )
-{
-    x |= static_cast<T>( 1 ) << ( std::numeric_limits<T>::digits - 1 );
-
-    for( int i = 0; i <= std::numeric_limits<T>::digits; ++i, x >>= 1 )
-    {
-        BOOST_TEST_EQ( boost::core::countl_zero( x ), i );
-        BOOST_TEST_EQ( boost::core::countl_one( static_cast<T>( ~x ) ), i );
-    }
-}
-
-int main()
-{
-    test_countl( static_cast<unsigned char>( 0 ) );
-    test_countl( static_cast<unsigned short>( 0 ) );
-    test_countl( static_cast<unsigned int>( 0 ) );
-    test_countl( static_cast<unsigned long>( 0 ) );
-    test_countl( static_cast<unsigned long long>( 0 ) );
-
-    boost::detail::splitmix64 rng;
-
-    for( int i = 0; i < 1000; ++i )
-    {
-        boost::uint64_t x = rng();
-
-        test_countl( static_cast<unsigned char>( x ) );
-        test_countl( static_cast<unsigned short>( x ) );
-        test_countl( static_cast<unsigned int>( x ) );
-        test_countl( static_cast<unsigned long>( x ) );
-        test_countl( static_cast<unsigned long long>( x ) );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_countr_test.cpp
+++ b/test/bit_countr_test.cpp
@@ -1,46 +0,0 @@
-// Test for boost/core/bit.hpp (countr_zero, countr_one)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/core/detail/splitmix64.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-
-template<class T> void test_countr( T x )
-{
-    x |= 1;
-
-    for( int i = 0; i <= std::numeric_limits<T>::digits; ++i, x <<= 1 )
-    {
-        BOOST_TEST_EQ( boost::core::countr_zero( x ), i );
-        BOOST_TEST_EQ( boost::core::countr_one( static_cast<T>( ~x ) ), i );
-    }
-}
-
-int main()
-{
-    test_countr( static_cast<unsigned char>( 0 ) );
-    test_countr( static_cast<unsigned short>( 0 ) );
-    test_countr( static_cast<unsigned int>( 0 ) );
-    test_countr( static_cast<unsigned long>( 0 ) );
-    test_countr( static_cast<unsigned long long>( 0 ) );
-
-    boost::detail::splitmix64 rng;
-
-    for( int i = 0; i < 1000; ++i )
-    {
-        boost::uint64_t x = rng();
-
-        test_countr( static_cast<unsigned char>( x ) );
-        test_countr( static_cast<unsigned short>( x ) );
-        test_countr( static_cast<unsigned int>( x ) );
-        test_countr( static_cast<unsigned long>( x ) );
-        test_countr( static_cast<unsigned long long>( x ) );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_endian_test.cpp
+++ b/test/bit_endian_test.cpp
@@ -1,36 +0,0 @@
-// Test for boost/core/bit.hpp (bit_ceil)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/cstdint.hpp>
-#include <cstring>
-
-int main()
-{
-    boost::uint64_t v = static_cast<boost::uint64_t>( 0x0102030405060708ull );
-
-    if( boost::core::endian::native == boost::core::endian::little )
-    {
-        unsigned char w[] = { 8, 7, 6, 5, 4, 3, 2, 1 };
-        BOOST_TEST( std::memcmp( &v, w, 8 ) == 0 );
-    }
-    else if( boost::core::endian::native == boost::core::endian::big )
-    {
-        unsigned char w[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
-        BOOST_TEST( std::memcmp( &v, w, 8 ) == 0 );
-    }
-    else
-    {
-        unsigned char w1[] = { 8, 7, 6, 5, 4, 3, 2, 1 };
-        BOOST_TEST( std::memcmp( &v, w1, 8 ) != 0 );
-
-        unsigned char w2[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
-        BOOST_TEST( std::memcmp( &v, w2, 8 ) != 0 );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_floor_test.cpp
+++ b/test/bit_floor_test.cpp
@@ -1,53 +0,0 @@
-// Test for boost/core/bit.hpp (bit_floor)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/core/detail/splitmix64.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-
-template<class T> void test_bit_floor( T x )
-{
-    T y = boost::core::bit_floor( x );
-
-    if( x == 0 )
-    {
-        BOOST_TEST_EQ( y, 0 );
-    }
-    else
-    {
-        BOOST_TEST( boost::core::has_single_bit( y ) );
-        BOOST_TEST_LE( +y, +x );
-        BOOST_TEST_GT( +y, x >> 1 );
-    }
-}
-
-int main()
-{
-    {
-        test_bit_floor( static_cast<unsigned char>( 0 ) );
-        test_bit_floor( static_cast<unsigned short>( 0 ) );
-        test_bit_floor( static_cast<unsigned int>( 0 ) );
-        test_bit_floor( static_cast<unsigned long>( 0 ) );
-        test_bit_floor( static_cast<unsigned long long>( 0 ) );
-    }
-
-    boost::detail::splitmix64 rng;
-
-    for( int i = 0; i < 1000; ++i )
-    {
-        boost::uint64_t x = rng();
-
-        test_bit_floor( static_cast<unsigned char>( x ) );
-        test_bit_floor( static_cast<unsigned short>( x ) );
-        test_bit_floor( static_cast<unsigned int>( x ) );
-        test_bit_floor( static_cast<unsigned long>( x ) );
-        test_bit_floor( static_cast<unsigned long long>( x ) );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_popcount_test.cpp
+++ b/test/bit_popcount_test.cpp
@@ -1,46 +0,0 @@
-// Test for boost/core/bit.hpp (bit_ceil)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/core/detail/splitmix64.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-#include <iostream>
-
-template<class T> void test_popcount( T x )
-{
-    int k = 0;
-    for( T y = x; y; y &= y - 1, ++k );
-
-    BOOST_TEST_EQ( boost::core::popcount( x ), k ) || ( std::cerr << "x: " << +x << std::endl );
-}
-
-int main()
-{
-    {
-        test_popcount( static_cast<unsigned char>( 0 ) );
-        test_popcount( static_cast<unsigned short>( 0 ) );
-        test_popcount( static_cast<unsigned int>( 0 ) );
-        test_popcount( static_cast<unsigned long>( 0 ) );
-        test_popcount( static_cast<unsigned long long>( 0 ) );
-    }
-
-    boost::detail::splitmix64 rng;
-
-    for( int i = 0; i < 1000; ++i )
-    {
-        boost::uint64_t x = rng();
-
-        test_popcount( static_cast<unsigned char>( x ) );
-        test_popcount( static_cast<unsigned short>( x ) );
-        test_popcount( static_cast<unsigned int>( x ) );
-        test_popcount( static_cast<unsigned long>( x ) );
-        test_popcount( static_cast<unsigned long long>( x ) );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_rotate_test.cpp
+++ b/test/bit_rotate_test.cpp
@@ -1,175 +0,0 @@
-// Test for boost/core/bit.hpp (rotl, rotr)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/core/detail/splitmix64.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-
-int const M = 256;
-
-template<class T> void test_rotate( T x )
-{
-    for( int i = 0; i < M; ++i )
-    {
-        BOOST_TEST_EQ( +boost::core::rotl( x, i ), +boost::core::rotr( x, -i ) );
-        BOOST_TEST_EQ( +boost::core::rotl( x, -i ), +boost::core::rotr( x, i ) );
-
-        unsigned const width = std::numeric_limits<T>::digits;
-        unsigned r = i & ( width - 1 );
-
-        if( r == 0 )
-        {
-            BOOST_TEST_EQ( +boost::core::rotl( x, i ), +x );
-            BOOST_TEST_EQ( +boost::core::rotr( x, i ), +x );
-        }
-        else
-        {
-            BOOST_TEST_EQ( +boost::core::rotl( x, i ), +static_cast<T>( (x << r) | (x >> (width - r)) ) );
-            BOOST_TEST_EQ( +boost::core::rotr( x, i ), +static_cast<T>( (x >> r) | (x << (width - r)) ) );
-        }
-    }
-}
-
-int main()
-{
-    {
-        boost::uint8_t x = 0x11;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x22 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x88 );
-
-        x = 0x22;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x44 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x11 );
-
-        x = 0x44;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x88 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x22 );
-
-        x = 0x88;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x11 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x44 );
-    }
-
-    {
-        boost::uint16_t x = 0x1111;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x2222 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x8888 );
-
-        x = 0x2222;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x4444 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x1111 );
-
-        x = 0x4444;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x8888 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x2222 );
-
-        x = 0x8888;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x1111 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x4444 );
-    }
-
-    {
-        boost::uint32_t x = 0x11111111;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x22222222 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x88888888 );
-
-        x = 0x22222222;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x44444444 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x11111111 );
-
-        x = 0x44444444;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x88888888 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x22222222 );
-
-        x = 0x88888888;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x11111111 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x44444444 );
-    }
-
-    {
-        boost::uint64_t x = 0x1111111111111111;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x2222222222222222 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x8888888888888888 );
-
-        x = 0x2222222222222222;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x4444444444444444 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x1111111111111111 );
-
-        x = 0x4444444444444444;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x8888888888888888 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x2222222222222222 );
-
-        x = 0x8888888888888888;
-
-        BOOST_TEST_EQ( +boost::core::rotl( x, 1 ), 0x1111111111111111 );
-        BOOST_TEST_EQ( +boost::core::rotr( x, 1 ), 0x4444444444444444 );
-    }
-
-    for( int i = -M; i <= M; ++i )
-    {
-        {
-            unsigned char x = 0;
-            BOOST_TEST_EQ( +boost::core::rotl( x, i ), +x );
-            BOOST_TEST_EQ( +boost::core::rotr( x, i ), +x );
-        }
-
-        {
-            unsigned short x = 0;
-            BOOST_TEST_EQ( boost::core::rotl( x, i ), x );
-            BOOST_TEST_EQ( boost::core::rotr( x, i ), x );
-        }
-
-        {
-            unsigned int x = 0;
-            BOOST_TEST_EQ( boost::core::rotl( x, i ), x );
-            BOOST_TEST_EQ( boost::core::rotr( x, i ), x );
-        }
-
-        {
-            unsigned long x = 0;
-            BOOST_TEST_EQ( boost::core::rotl( x, i ), x );
-            BOOST_TEST_EQ( boost::core::rotr( x, i ), x );
-        }
-
-        {
-            unsigned long long x = 0;
-            BOOST_TEST_EQ( boost::core::rotl( x, i ), x );
-            BOOST_TEST_EQ( boost::core::rotr( x, i ), x );
-        }
-    }
-
-    boost::detail::splitmix64 rng;
-
-    for( int i = 0; i < 1000; ++i )
-    {
-        boost::uint64_t x = rng();
-
-        test_rotate( static_cast<unsigned char>( x ) );
-        test_rotate( static_cast<unsigned short>( x ) );
-        test_rotate( static_cast<unsigned int>( x ) );
-        test_rotate( static_cast<unsigned long>( x ) );
-        test_rotate( static_cast<unsigned long long>( x ) );
-    }
-
-    return boost::report_errors();
-}
--- a/test/bit_width_test.cpp
+++ b/test/bit_width_test.cpp
@@ -1,94 +0,0 @@
-// Test for boost/core/bit.hpp (bit_width)
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/bit.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/core/detail/splitmix64.hpp>
-#include <boost/cstdint.hpp>
-#include <limits>
-
-template<class T> void test_width( T x )
-{
-    BOOST_TEST_EQ( boost::core::bit_width( x ), std::numeric_limits<T>::digits - boost::core::countl_zero( x ) );
-}
-
-int main()
-{
-    {
-        boost::uint8_t x = 0;
-
-        BOOST_TEST_EQ( boost::core::bit_width( x ), 0 );
-
-        x = 1;
-
-        for( int i = 0; i < 8; ++i, x <<= 1 )
-        {
-            BOOST_TEST_EQ( boost::core::bit_width( x ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint8_t>( x | ( x >> 1 ) ) ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint8_t>( x | ( x >> 2 ) ) ), i+1 );
-        }
-    }
-
-    {
-        boost::uint16_t x = 0;
-
-        BOOST_TEST_EQ( boost::core::bit_width( x ), 0 );
-
-        x = 1;
-
-        for( int i = 0; i < 16; ++i, x <<= 1 )
-        {
-            BOOST_TEST_EQ( boost::core::bit_width( x ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint16_t>( x | ( x >> 1 ) ) ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint16_t>( x | ( x >> 2 ) ) ), i+1 );
-        }
-    }
-
-    {
-        boost::uint32_t x = 0;
-
-        BOOST_TEST_EQ( boost::core::bit_width( x ), 0 );
-
-        x = 1;
-
-        for( int i = 0; i < 32; ++i, x <<= 1 )
-        {
-            BOOST_TEST_EQ( boost::core::bit_width( x ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint32_t>( x | ( x >> 1 ) ) ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint32_t>( x | ( x >> 2 ) ) ), i+1 );
-        }
-    }
-
-    {
-        boost::uint64_t x = 0;
-
-        BOOST_TEST_EQ( boost::core::bit_width( x ), 0 );
-
-        x = 1;
-
-        for( int i = 0; i < 64; ++i, x <<= 1 )
-        {
-            BOOST_TEST_EQ( boost::core::bit_width( x ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint64_t>( x | ( x >> 1 ) ) ), i+1 );
-            BOOST_TEST_EQ( boost::core::bit_width( static_cast<boost::uint64_t>( x | ( x >> 2 ) ) ), i+1 );
-        }
-    }
-
-    boost::detail::splitmix64 rng;
-
-    for( int i = 0; i < 1000; ++i )
-    {
-        boost::uint64_t x = rng();
-
-        test_width( static_cast<unsigned char>( x ) );
-        test_width( static_cast<unsigned short>( x ) );
-        test_width( static_cast<unsigned int>( x ) );
-        test_width( static_cast<unsigned long>( x ) );
-        test_width( static_cast<unsigned long long>( x ) );
-    }
-
-    return boost::report_errors();
-}
--- a/test/cmake_install_test/CMakeLists.txt
+++ b/test/cmake_install_test/CMakeLists.txt
@@ -1,17 +0,0 @@
-# Copyright 2018, 2019 Peter Dimov
-# Distributed under the Boost Software License, Version 1.0.
-# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
-
-cmake_minimum_required(VERSION 3.5...3.16)
-
-project(cmake_install_test LANGUAGES CXX)
-
-find_package(boost_core REQUIRED)
-
-add_executable(quick ../quick.cpp)
-target_link_libraries(quick Boost::core)
-
-enable_testing()
-add_test(quick quick)
-
-add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)
--- a/test/cmake_subdir_test/CMakeLists.txt
+++ b/test/cmake_subdir_test/CMakeLists.txt
@@ -1,19 +0,0 @@
-# Copyright 2018, 2019 Peter Dimov
-# Distributed under the Boost Software License, Version 1.0.
-# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
-
-cmake_minimum_required(VERSION 3.5...3.16)
-
-project(cmake_subdir_test LANGUAGES CXX)
-
-add_subdirectory(../.. boostorg/core)
-add_subdirectory(../../../assert boostorg/assert)
-add_subdirectory(../../../config boostorg/config)
-
-add_executable(quick ../quick.cpp)
-target_link_libraries(quick Boost::core)
-
-enable_testing()
-add_test(quick quick)
-
-add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)
--- a/test/cmath_test.cpp
+++ b/test/cmath_test.cpp
@@ -1,296 +0,0 @@
-// Test for boost/core/cmath.hpp
-//
-// Copyright 2020 Peter Dimov
-// Distributed under the Boost Software License, Version 1.0.
-// https://www.boost.org/LICENSE_1_0.txt
-
-#include <boost/core/cmath.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <boost/config.hpp>
-#include <boost/config/workaround.hpp>
-#include <limits>
-#include <cfloat>
-
-template<class T> void test_positive_normal( T x )
-{
-    BOOST_TEST( boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_normal );
-
-    BOOST_TEST( !boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(+2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(+2) );
-}
-
-template<class T> void test_negative_normal( T x )
-{
-    BOOST_TEST( boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_normal );
-
-    BOOST_TEST( boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(-2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(-2) );
-}
-
-template<class T> void test_positive_zero( T x )
-{
-    BOOST_TEST( boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_zero );
-
-    BOOST_TEST( !boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(+2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(+2) );
-}
-
-template<class T> void test_negative_zero( T x )
-{
-    BOOST_TEST( boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_zero );
-
-#if defined(BOOST_CORE_USE_GENERIC_CMATH) && BOOST_WORKAROUND(BOOST_GCC, < 40700)
-
-    // g++ 4.4, 4.6 fail these tests with optimizations on
-
-#else
-
-    BOOST_TEST( boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(-2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(-2) );
-
-#endif
-}
-
-template<class T> void test_positive_infinity( T x )
-{
-    BOOST_TEST( !boost::core::isfinite( x ) );
-    BOOST_TEST( boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_infinite );
-
-    BOOST_TEST( !boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(+2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(+2) );
-}
-
-template<class T> void test_negative_infinity( T x )
-{
-    BOOST_TEST( !boost::core::isfinite( x ) );
-    BOOST_TEST( boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_infinite );
-
-    BOOST_TEST( boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(-2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(-2) );
-}
-
-template<class T> void test_positive_nan( T x )
-{
-    BOOST_TEST( !boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_nan );
-
-    BOOST_TEST( !boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(+2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(+2) );
-}
-
-template<class T> void test_negative_nan( T x )
-{
-    BOOST_TEST( !boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_nan );
-
-    BOOST_TEST( boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(-2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(-2) );
-}
-
-template<class T> void test_positive_subnormal( T x )
-{
-    BOOST_TEST( boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_subnormal );
-
-    BOOST_TEST( !boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(+2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(+2) );
-}
-
-template<class T> void test_negative_subnormal( T x )
-{
-    BOOST_TEST( boost::core::isfinite( x ) );
-    BOOST_TEST( !boost::core::isinf( x ) );
-    BOOST_TEST( !boost::core::isnan( x ) );
-    BOOST_TEST( !boost::core::isnormal( x ) );
-
-    BOOST_TEST_EQ( boost::core::fpclassify( x ), boost::core::fp_subnormal );
-
-    BOOST_TEST( boost::core::signbit( x ) );
-
-    BOOST_TEST_EQ( boost::core::copysign( T(+2), x ), T(-2) );
-    BOOST_TEST_EQ( boost::core::copysign( T(-2), x ), T(-2) );
-}
-
-template<class T> void test_positive_normal_( T x )
-{
-    test_positive_normal( x );
-    test_positive_normal( boost::core::copysign( x, T(+1) ) );
-    test_negative_normal( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_negative_normal_( T x )
-{
-    test_negative_normal( x );
-    test_positive_normal( boost::core::copysign( x, T(+1) ) );
-    test_negative_normal( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_positive_zero_( T x )
-{
-    test_positive_zero( x );
-    test_positive_zero( boost::core::copysign( x, T(+1) ) );
-    test_negative_zero( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_negative_zero_( T x )
-{
-    test_negative_zero( x );
-    test_positive_zero( boost::core::copysign( x, T(+1) ) );
-    test_negative_zero( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_positive_infinity_( T x )
-{
-    test_positive_infinity( x );
-    test_positive_infinity( boost::core::copysign( x, T(+1) ) );
-    test_negative_infinity( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_negative_infinity_( T x )
-{
-    test_negative_infinity( x );
-    test_positive_infinity( boost::core::copysign( x, T(+1) ) );
-    test_negative_infinity( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_positive_nan_( T x )
-{
-    test_positive_nan( x );
-    test_positive_nan( boost::core::copysign( x, T(+1) ) );
-    test_negative_nan( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_negative_nan_( T x )
-{
-    test_negative_nan( x );
-    test_positive_nan( boost::core::copysign( x, T(+1) ) );
-    test_negative_nan( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_positive_subnormal_( T x )
-{
-    test_positive_subnormal( x );
-    test_positive_subnormal( boost::core::copysign( x, T(+1) ) );
-    test_negative_subnormal( boost::core::copysign( x, T(-1) ) );
-}
-
-template<class T> void test_negative_subnormal_( T x )
-{
-    test_negative_subnormal( x );
-    test_positive_subnormal( boost::core::copysign( x, T(+1) ) );
-    test_negative_subnormal( boost::core::copysign( x, T(-1) ) );
-}
-
-int main()
-{
-    // float
-
-    test_positive_normal_( +1.0f );
-    test_negative_normal_( -1.0f );
-    test_positive_normal_( FLT_MIN );
-    test_negative_normal_( -FLT_MIN );
-    test_positive_normal_( FLT_MAX );
-    test_negative_normal_( -FLT_MAX );
-    test_positive_zero_( +0.0f );
-    test_negative_zero_( -0.0f );
-    test_positive_infinity_( std::numeric_limits<float>::infinity() );
-    test_negative_infinity_( -std::numeric_limits<float>::infinity() );
-    test_positive_nan_( std::numeric_limits<float>::quiet_NaN() );
-    test_negative_nan_( boost::core::copysign( std::numeric_limits<float>::quiet_NaN(), -1.0f ) );
-    test_positive_subnormal_( FLT_MIN / 2 );
-    test_negative_subnormal_( -FLT_MIN / 2 );
-
-    // double
-
-    test_positive_normal_( +1.0 );
-    test_negative_normal_( -1.0 );
-    test_positive_normal_( DBL_MIN );
-    test_negative_normal_( -DBL_MIN );
-    test_positive_normal_( DBL_MAX );
-    test_negative_normal_( -DBL_MAX );
-    test_positive_zero_( +0.0 );
-    test_negative_zero_( -0.0 );
-    test_positive_infinity_( std::numeric_limits<double>::infinity() );
-    test_negative_infinity_( -std::numeric_limits<double>::infinity() );
-    test_positive_nan_( std::numeric_limits<double>::quiet_NaN() );
-    test_negative_nan_( boost::core::copysign( std::numeric_limits<double>::quiet_NaN(), -1.0 ) );
-    test_positive_subnormal_( DBL_MIN / 2 );
-    test_negative_subnormal_( -DBL_MIN / 2 );
-
-    // long double
-
-    test_positive_normal_( +1.0l );
-    test_negative_normal_( -1.0l );
-    test_positive_normal_( LDBL_MIN );
-    test_negative_normal_( -LDBL_MIN );
-    test_positive_normal_( LDBL_MAX );
-    test_negative_normal_( -LDBL_MAX );
-    test_positive_zero_( +0.0l );
-    test_negative_zero_( -0.0l );
-    test_positive_infinity_( std::numeric_limits<long double>::infinity() );
-    test_negative_infinity_( -std::numeric_limits<long double>::infinity() );
-    test_positive_nan_( std::numeric_limits<long double>::quiet_NaN() );
-    test_negative_nan_( boost::core::copysign( std::numeric_limits<long double>::quiet_NaN(), -1.0l ) );
-    test_positive_subnormal_( LDBL_MIN / 2 );
-    test_negative_subnormal_( -LDBL_MIN / 2 );
-
-    return boost::report_errors();
-}
--- a/test/default_allocator_test.cpp
+++ b/test/default_allocator_test.cpp
@@ -1,268 +0,0 @@
-/*
-Copyright 2019 Glen Joseph Fernandes
-(glenjofe@gmail.com)
-
-Distributed under the Boost Software License, Version 1.0.
-(http://www.boost.org/LICENSE_1_0.txt)
-*/
-#include <boost/core/default_allocator.hpp>
-#include <boost/core/lightweight_test_trait.hpp>
-#include <vector>
-#include <list>
-
-class type {
-public:
-    explicit type(double value)
-        : value_(value) { }
-
-private:
-    type(const type&);
-    type& operator=(const type&);
-
-    double value_;
-};
-
-void test_value_type()
-{
-    BOOST_TEST_TRAIT_SAME(int,
-        boost::default_allocator<int>::value_type);
-    BOOST_TEST_TRAIT_SAME(type,
-        boost::default_allocator<type>::value_type);
-    BOOST_TEST_TRAIT_SAME(int[5],
-        boost::default_allocator<int[5]>::value_type);
-    BOOST_TEST_TRAIT_SAME(void,
-        boost::default_allocator<void>::value_type);
-}
-
-void test_pointer()
-{
-    BOOST_TEST_TRAIT_SAME(int*,
-        boost::default_allocator<int>::pointer);
-    BOOST_TEST_TRAIT_SAME(type*,
-        boost::default_allocator<type>::pointer);
-    BOOST_TEST_TRAIT_SAME(int(*)[5],
-        boost::default_allocator<int[5]>::pointer);
-    BOOST_TEST_TRAIT_SAME(void*,
-        boost::default_allocator<void>::pointer);
-}
-
-void test_const_pointer()
-{
-    BOOST_TEST_TRAIT_SAME(const int*,
-        boost::default_allocator<int>::const_pointer);
-    BOOST_TEST_TRAIT_SAME(const type*,
-        boost::default_allocator<type>::const_pointer);
-    BOOST_TEST_TRAIT_SAME(const int(*)[5],
-        boost::default_allocator<int[5]>::const_pointer);
-    BOOST_TEST_TRAIT_SAME(const void*,
-        boost::default_allocator<void>::const_pointer);
-}
-
-void test_reference()
-{
-    BOOST_TEST_TRAIT_SAME(int&,
-        boost::default_allocator<int>::reference);
-    BOOST_TEST_TRAIT_SAME(type&,
-        boost::default_allocator<type>::reference);
-    BOOST_TEST_TRAIT_SAME(int(&)[5],
-        boost::default_allocator<int[5]>::reference);
-    BOOST_TEST_TRAIT_SAME(void,
-        boost::default_allocator<void>::reference);
-}
-
-void test_const_reference()
-{
-    BOOST_TEST_TRAIT_SAME(const int&,
-        boost::default_allocator<int>::const_reference);
-    BOOST_TEST_TRAIT_SAME(const type&,
-        boost::default_allocator<type>::const_reference);
-    BOOST_TEST_TRAIT_SAME(const int(&)[5],
-        boost::default_allocator<int[5]>::const_reference);
-    BOOST_TEST_TRAIT_SAME(const void,
-        boost::default_allocator<void>::const_reference);
-}
-
-void test_size_type()
-{
-    BOOST_TEST_TRAIT_SAME(std::size_t,
-        boost::default_allocator<int>::size_type);
-    BOOST_TEST_TRAIT_SAME(std::size_t,
-        boost::default_allocator<type>::size_type);
-    BOOST_TEST_TRAIT_SAME(std::size_t,
-        boost::default_allocator<int[5]>::size_type);
-    BOOST_TEST_TRAIT_SAME(std::size_t,
-        boost::default_allocator<void>::size_type);
-}
-
-void test_difference_type()
-{
-    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
-        boost::default_allocator<int>::difference_type);
-    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
-        boost::default_allocator<type>::difference_type);
-    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
-        boost::default_allocator<int[5]>::difference_type);
-    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
-        boost::default_allocator<void>::difference_type);
-}
-
-void test_propagate_on_container_move_assignment()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int>::
-        propagate_on_container_move_assignment));
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<type>::
-        propagate_on_container_move_assignment));
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int[5]>::
-        propagate_on_container_move_assignment));
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<void>::
-        propagate_on_container_move_assignment));
-}
-
-void test_is_always_equal()
-{
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int>::is_always_equal));
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<type>::is_always_equal));
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int[5]>::is_always_equal));
-    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<void>::is_always_equal));
-}
-
-void test_rebind()
-{
-    BOOST_TEST_TRAIT_SAME(boost::default_allocator<type>,
-        boost::default_allocator<int>::rebind<type>::other);
-    BOOST_TEST_TRAIT_SAME(boost::default_allocator<int[5]>,
-        boost::default_allocator<type>::rebind<int[5]>::other);
-    BOOST_TEST_TRAIT_SAME(boost::default_allocator<void>,
-        boost::default_allocator<int[5]>::rebind<void>::other);
-    BOOST_TEST_TRAIT_SAME(boost::default_allocator<int>,
-        boost::default_allocator<void>::rebind<int>::other);
-}
-
-void test_default_construct()
-{
-    boost::default_allocator<int> a1;
-    (void)a1;
-    boost::default_allocator<type> a2;
-    (void)a2;
-    boost::default_allocator<int[5]> a3;
-    (void)a3;
-    boost::default_allocator<void> a4;
-    (void)a4;
-}
-
-void test_copy()
-{
-    boost::default_allocator<int> a1;
-    boost::default_allocator<int> a2(a1);
-    (void)a2;
-    boost::default_allocator<int[5]> a3;
-    boost::default_allocator<int[5]> a4(a3);
-    (void)a4;
-    boost::default_allocator<void> a5;
-    boost::default_allocator<void> a6(a5);
-    (void)a6;
-}
-
-void test_construct_other()
-{
-    boost::default_allocator<int> a1;
-    boost::default_allocator<type> a2(a1);
-    boost::default_allocator<int[5]> a3(a2);
-    boost::default_allocator<void> a4(a3);
-    boost::default_allocator<int> a5(a4);
-    (void)a5;
-}
-
-template<class T>
-std::size_t max_size()
-{
-    return static_cast<std::size_t>(-1) / (2 < sizeof(T) ? sizeof(T) : 2);
-}
-
-void test_max_size()
-{
-    BOOST_TEST_EQ(max_size<int>(),
-        boost::default_allocator<int>().max_size());
-    BOOST_TEST_EQ(max_size<type>(),
-        boost::default_allocator<type>().max_size());
-    BOOST_TEST_EQ(max_size<int[5]>(),
-        boost::default_allocator<int[5]>().max_size());
-}
-
-template<class T>
-void test_allocate()
-{
-    boost::default_allocator<T> a;
-    T* p = a.allocate(1);
-    BOOST_TEST(p != 0);
-    a.deallocate(p, 1);
-    p = a.allocate(0);
-    a.deallocate(p, 0);
-    BOOST_TEST_THROWS(a.allocate(a.max_size() + 1), std::bad_alloc);
-}
-
-void test_allocate_deallocate()
-{
-    test_allocate<int>();
-    test_allocate<type>();
-    test_allocate<int[5]>();
-}
-
-void test_equals()
-{
-    BOOST_TEST(boost::default_allocator<int>() ==
-        boost::default_allocator<type>());
-    BOOST_TEST(boost::default_allocator<type>() ==
-        boost::default_allocator<int[5]>());
-    BOOST_TEST(boost::default_allocator<int[5]>() ==
-        boost::default_allocator<void>());
-    BOOST_TEST(boost::default_allocator<void>() ==
-        boost::default_allocator<int>());
-}
-
-void test_not_equals()
-{
-    BOOST_TEST(!(boost::default_allocator<int>() !=
-        boost::default_allocator<type>()));
-    BOOST_TEST(!(boost::default_allocator<type>() !=
-        boost::default_allocator<int[5]>()));
-    BOOST_TEST(!(boost::default_allocator<int[5]>() !=
-        boost::default_allocator<void>()));
-    BOOST_TEST(!(boost::default_allocator<void>() !=
-        boost::default_allocator<int>()));
-}
-
-void test_container()
-{
-    std::vector<int, boost::default_allocator<int> > v;
-    v.push_back(1);
-    BOOST_TEST(v.size() == 1);
-    BOOST_TEST(v.front() == 1);
-    std::list<int, boost::default_allocator<int> > l;
-    l.push_back(1);
-    BOOST_TEST(l.size() == 1);
-    BOOST_TEST(l.front() == 1);
-}
-
-int main()
-{
-    test_value_type();
-    test_pointer();
-    test_const_pointer();
-    test_reference();
-    test_const_reference();
-    test_size_type();
-    test_difference_type();
-    test_propagate_on_container_move_assignment();
-    test_is_always_equal();
-    test_rebind();
-    test_default_construct();
-    test_copy();
-    test_construct_other();
-    test_max_size();
-    test_allocate_deallocate();
-    test_equals();
-    test_not_equals();
-    test_container();
-    return boost::report_errors();
-}
--- a/test/detail_iterator_test.cpp
+++ b/test/detail_iterator_test.cpp
@@ -8,7 +8,6 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //

-#define BOOST_ALLOW_DEPRECATED_HEADERS
 #include <boost/detail/iterator.hpp>
 #include <boost/core/is_same.hpp>
 #include <boost/core/lightweight_test_trait.hpp>
--- a/test/eif_constructors.cpp
+++ b/test/eif_constructors.cpp
@@ -12,7 +12,7 @@

 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>

 using boost::enable_if;
 using boost::disable_if;
--- a/test/eif_dummy_arg_disambiguation.cpp
+++ b/test/eif_dummy_arg_disambiguation.cpp
@@ -12,7 +12,7 @@

 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>

 using boost::enable_if;
 using boost::disable_if;
--- a/test/eif_lazy.cpp
+++ b/test/eif_lazy.cpp
@@ -12,7 +12,7 @@

 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_same.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>

 using boost::enable_if_c;
 using boost::lazy_enable_if_c;
--- a/test/eif_lazy_test.cpp
+++ b/test/eif_lazy_test.cpp
@@ -14,7 +14,7 @@

 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_same.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>

 using boost::lazy_enable_if;
 using boost::lazy_disable_if;
--- a/test/eif_member_templates.cpp
+++ b/test/eif_member_templates.cpp
@@ -12,7 +12,7 @@

 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>

 using boost::enable_if;
 using boost::disable_if;
--- a/Show More
+++ b/Show More