Added AppVeyor CI config.

AppVeyor CI is useful for testing older MSVC versions that are no longer
supported by GitHub Actions.

.github/workflows/ci.yml

@@ -0,0 +1,594 @@
+# Copyright 2021-2025 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-4.7
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - g++-4.7
+          - toolset: gcc-4.8
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-4.8
+          - toolset: gcc-4.9
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - g++-4.9
+          - toolset: gcc-5
+            cxxstd: "11,14,1z"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - g++-5
+          - toolset: gcc-6
+            cxxstd: "11,14,1z"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-6
+          - toolset: gcc-7
+            cxxstd: "11,14,17"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-7
+          - toolset: gcc-8
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-8
+          - toolset: gcc-9
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - g++-9
+          - toolset: gcc-10
+            cxxstd: "11,14,17,20"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - g++-10
+          - toolset: gcc-11
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-22.04
+            install:
+              - g++-11
+          - toolset: gcc-12
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-22.04
+            install:
+              - g++-12
+          - toolset: gcc-13
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-24.04
+            install:
+              - g++-13
+          - toolset: gcc-14
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-24.04
+            install:
+              - g++-14
+          - toolset: gcc-15
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-latest
+            container: ubuntu:25.04
+            install:
+              - g++-15
+          - name: UBSAN
+            toolset: gcc-13
+            cxxstd: "11,14,17,20,23"
+            ubsan: 1
+            build_variant: debug
+            os: ubuntu-24.04
+            install:
+              - g++-13
+
+          # Linux, clang
+          - toolset: clang
+            compiler: clang++-3.5
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.5
+          - toolset: clang
+            compiler: clang++-3.6
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.6
+          - toolset: clang
+            compiler: clang++-3.7
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.7
+          - toolset: clang
+            compiler: clang++-3.8
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.8
+          - toolset: clang
+            compiler: clang++-3.9
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-3.9
+          - toolset: clang
+            compiler: clang++-4.0
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-4.0
+          - toolset: clang
+            compiler: clang++-5.0
+            cxxstd: "11,14,1z"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-5.0
+          - toolset: clang
+            compiler: clang++-6.0
+            cxxstd: "11,14,17"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-6.0
+          - toolset: clang
+            compiler: clang++-7
+            cxxstd: "11,14,17"
+            os: ubuntu-latest
+            container: 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: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-8
+              - g++-7
+            gcc_toolchain: 7
+          - toolset: clang
+            compiler: clang++-9
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - clang-9
+          - toolset: clang
+            compiler: clang++-10
+            cxxstd: "11,14,17,20"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - clang-10
+          - toolset: clang
+            compiler: clang++-11
+            cxxstd: "11,14,17,20"
+            os: ubuntu-22.04
+            install:
+              - clang-11
+          - toolset: clang
+            compiler: clang++-12
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-12
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-13
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-13
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-14
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-14
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-15
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-15
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-16
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-24.04
+            install:
+              - clang-16
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-17
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-24.04
+            install:
+              - clang-17
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-18
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-24.04
+            install:
+              - clang-18
+              - g++-13
+          - toolset: clang
+            compiler: clang++-19
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-24.04
+            install:
+              - clang-19
+          - toolset: clang
+            compiler: clang++-20
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-latest
+            container: ubuntu:25.04
+            install:
+              - clang-20
+          - toolset: clang
+            compiler: clang++-20
+            cxxstd: "11,14,17,20,23,26"
+            cxxflags: -stdlib=libc++
+            linkflags: -stdlib=libc++
+            os: ubuntu-latest
+            container: ubuntu:25.04
+            install:
+              - clang-20
+              - libc++-20-dev
+              - libc++abi-20-dev
+          - name: UBSAN
+            toolset: clang
+            compiler: clang++-18
+            cxxstd: "11,14,17,20,23,26"
+            cxxflags: -stdlib=libc++
+            linkflags: -stdlib=libc++
+            ubsan: 1
+            build_variant: debug
+            os: ubuntu-24.04
+            install:
+              - clang-18
+              - libc++-18-dev
+              - libc++abi-18-dev
+
+          - toolset: clang
+            cxxstd: "11,14,17,20,2b"
+            os: macos-13
+          - toolset: clang
+            cxxstd: "11,14,17,20,2b"
+            os: macos-14
+
+    timeout-minutes: 15
+    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
+                    if [ "$(apt-cache search "^python-is-python3$" | wc -l)" -ne 0 ]
+                    then
+                        PYTHON_PACKAGE="python-is-python3"
+                    else
+                        PYTHON_PACKAGE="python"
+                    fi
+                    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++ $PYTHON_PACKAGE python3 perl git cmake
+                fi
+            fi
+            git config --global pack.threads 0
+
+      - name: Install packages
+        if: matrix.install
+        run: |
+            declare -a SOURCE_KEYS SOURCES
+            if [ -n "${{join(matrix.source_keys, ' ')}}" ]
+            then
+                SOURCE_KEYS=("${{join(matrix.source_keys, '" "')}}")
+            fi
+            if [ -n "${{join(matrix.sources, ' ')}}" ]
+            then
+                SOURCES=("${{join(matrix.sources, '" "')}}")
+            fi
+            for key in "${SOURCE_KEYS[@]}"
+            do
+                for i in {1..$NET_RETRY_COUNT}
+                do
+                    echo "Adding key: $key"
+                    wget -O - "$key" | sudo apt-key add - && break || sleep 2
+                done
+            done
+            if [ ${#SOURCES[@]} -gt 0 ]
+            then
+                APT_ADD_REPO_COMMON_ARGS=("-y")
+                APT_ADD_REPO_SUPPORTED_ARGS="$(apt-add-repository --help | perl -ne 'if (/^\s*-n/) { print "n"; } elsif (/^\s*-P/) { print "P"; } elsif (/^\s*-S/) { print "S"; } elsif (/^\s*-U/) { print "U"; }')"
+                if [ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*n*}" ]
+                then
+                    APT_ADD_REPO_COMMON_ARGS+=("-n")
+                fi
+                APT_ADD_REPO_HAS_SOURCE_ARGS="$([ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*P*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*S*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*U*}" ] && echo 1 || echo 0)"
+                for source in "${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")
+                        echo "apt-add-repository ${APT_ADD_REPO_ARGS[@]}"
+                        sudo -E apt-add-repository "${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 $GIT_FETCH_JOBS")
+            fi
+            mkdir -p snapshot
+            cd snapshot
+            echo "Downloading library snapshot: https://github.com/${GITHUB_REPOSITORY}/archive/${GITHUB_SHA}.tar.gz"
+            curl -L --retry "$NET_RETRY_COUNT" -o "${LIBRARY}-${GITHUB_SHA}.tar.gz" "https://github.com/${GITHUB_REPOSITORY}/archive/${GITHUB_SHA}.tar.gz"
+            tar -xf "${LIBRARY}-${GITHUB_SHA}.tar.gz"
+            if [ ! -d "${LIBRARY}-${GITHUB_SHA}" ]
+            then
+                echo "Library snapshot does not contain the library directory ${LIBRARY}-${GITHUB_SHA}:"
+                ls -la
+                exit 1
+            fi
+            rm -f "${LIBRARY}-${GITHUB_SHA}.tar.gz"
+            cd ..
+            git clone -b "$BOOST_BRANCH" --depth 1 "https://github.com/boostorg/boost.git" "boost-root"
+            cd boost-root
+            mkdir -p libs
+            rm -rf "libs/$LIBRARY"
+            mv -f "../snapshot/${LIBRARY}-${GITHUB_SHA}" "libs/$LIBRARY"
+            rm -rf "../snapshot"
+            git submodule update --init tools/boostdep
+            DEPINST_ARGS+=("$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[@]}"
+
+  windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: msvc-14.3
+            cxxstd: "14,17,20,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: clang-win
+            cxxstd: "14,17,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: gcc
+            cxxstd: "11,14,17,20,23"
+            addrmd: 64
+            os: windows-2022
+
+    timeout-minutes: 15
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - name: Setup Boost
+        shell: cmd
+        run: |
+            echo GITHUB_REPOSITORY: %GITHUB_REPOSITORY%
+            for /f %%i in ("%GITHUB_REPOSITORY%") do set LIBRARY=%%~nxi
+            echo LIBRARY: %LIBRARY%
+            echo LIBRARY=%LIBRARY%>>%GITHUB_ENV%
+            echo GITHUB_BASE_REF: %GITHUB_BASE_REF%
+            echo GITHUB_REF: %GITHUB_REF%
+            if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
+            set BOOST_BRANCH=develop
+            for /f %%i in ("%GITHUB_BASE_REF%") do if "%%~nxi" == "master" set BOOST_BRANCH=master
+            echo BOOST_BRANCH: %BOOST_BRANCH%
+            mkdir snapshot
+            cd snapshot
+            echo Downloading library snapshot: https://github.com/%GITHUB_REPOSITORY%/archive/%GITHUB_SHA%.zip
+            curl -L --retry %NET_RETRY_COUNT% -o "%LIBRARY%-%GITHUB_SHA%.zip" "https://github.com/%GITHUB_REPOSITORY%/archive/%GITHUB_SHA%.zip"
+            tar -xf "%LIBRARY%-%GITHUB_SHA%.zip"
+            if not exist "%LIBRARY%-%GITHUB_SHA%\" (
+                echo Library snapshot does not contain the library directory %LIBRARY%-%GITHUB_SHA%:
+                dir
+                exit /b 1
+            )
+            del /f "%LIBRARY%-%GITHUB_SHA%.zip"
+            cd ..
+            git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+            cd boost-root
+            if not exist "libs\" mkdir libs
+            if exist "libs\%LIBRARY%\" rmdir /s /q "libs\%LIBRARY%"
+            move /Y "..\snapshot\%LIBRARY%-%GITHUB_SHA%" "libs\%LIBRARY%"
+            rmdir /s /q "..\snapshot"
+            git submodule update --init tools/boostdep
+            python tools/boostdep/depinst/depinst.py --git_args "--jobs %GIT_FETCH_JOBS%" %LIBRARY%
+            cmd /c bootstrap
+            b2 headers
+
+      - name: Run tests
+        shell: cmd
+        run: |
+            cd boost-root
+            set BUILD_VARIANT=${{matrix.build_variant}}
+            if "%BUILD_VARIANT%" == "" set BUILD_VARIANT=%DEFAULT_BUILD_VARIANT%
+            b2 -j %NUMBER_OF_PROCESSORS% toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=%BUILD_VARIANT% embed-manifest-via=linker libs/%LIBRARY%/test

.travis.yml

@@ -1,386 +0,0 @@
-# Copyright 2016, 2017, 2018 Peter Dimov
-# Copyright 2019 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)
-
-language: cpp
-
-sudo: false
-
-branches:
-  only:
-    - master
-    - develop
-    - /feature\/.*/
-
-env:
-  matrix:
-    - BOGUS_JOB=true
-
-matrix:
-
-  exclude:
-    - env: BOGUS_JOB=true
-
-  include:
-# gcc, Linux
-    - os: linux
-      dist: trusty
-      compiler: gcc-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
-      dist: trusty
-      compiler: gcc-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
-      dist: trusty
-      compiler: gcc-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
-      dist: xenial
-      compiler: gcc-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
-      dist: xenial
-      compiler: gcc-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
-      dist: xenial
-      compiler: gcc-5
-      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=03,11,14,1z
-      addons:
-        apt:
-          packages:
-            - g++-5
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      dist: xenial
-      compiler: gcc-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: xenial
-      compiler: gcc-7
-      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=03,11,14,17
-      addons:
-        apt:
-          packages:
-            - g++-7
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      dist: xenial
-      compiler: gcc-8
-      env: TOOLSET=gcc COMPILER=g++-8 CXXSTD=03,11,14,17
-      addons:
-        apt:
-          packages:
-            - g++-8
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      dist: bionic
-      compiler: gcc-9
-      env: TOOLSET=gcc COMPILER=g++-9 CXXSTD=03,11,14,17
-      addons:
-        apt:
-          packages:
-            - g++-9
-          sources:
-            - sourceline: "ppa:ubuntu-toolchain-r/test"
-
-    - os: linux
-      dist: bionic
-      compiler: gcc-10
-      env: TOOLSET=gcc COMPILER=g++-10 CXXSTD=03,11,14,17,20
-      addons:
-        apt:
-          packages:
-            - g++-10
-          sources:
-            - sourceline: "ppa:ubuntu-toolchain-r/test"
-
-# clang, Linux
-    - os: linux
-      dist: trusty
-      compiler: clang-3.4
-      env: TOOLSET=clang COMPILER=clang++-3.4 CXXSTD=03,11
-      addons:
-        apt:
-          packages:
-            - clang-3.4
-            - libstdc++-4.9-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.4 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: trusty
-      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
-            - sourceline: "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.5 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: trusty
-      compiler: clang-3.6
-      env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=03,11,14,1z
-      addons:
-        apt:
-          packages:
-            - clang-3.6
-            - libstdc++-5-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.6 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: trusty
-      compiler: clang-3.7
-      env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=03,11,14,1z
-      addons:
-        apt:
-          packages:
-            - clang-3.7
-            - libstdc++-5-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.7 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-3.8
-      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=03,11,14,1z
-      addons:
-        apt:
-          packages:
-            - clang-3.8
-            - libstdc++-6-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-3.8 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-3.9
-      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=03,11,14,1z
-      addons:
-        apt:
-          packages:
-            - clang-3.9
-            - libstdc++-6-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-3.9 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-4
-      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=03,11,14,1z
-      addons:
-        apt:
-          packages:
-            - clang-4.0
-            - libstdc++-6-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-5
-      env: TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=03,11,14,1z
-      addons:
-        apt:
-          packages:
-            - clang-5.0
-            - libstdc++-7-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-5.0 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-6
-      env: TOOLSET=clang COMPILER=clang++-6.0 CXXSTD=03,11,14,17
-      addons:
-        apt:
-          packages:
-            - clang-6.0
-            - libstdc++-8-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-6.0 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-7
-      env: TOOLSET=clang COMPILER=clang++-7 CXXSTD=03,11,14,17
-      addons:
-        apt:
-          packages:
-            - clang-7
-            - libstdc++-8-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-8
-      env: TOOLSET=clang COMPILER=clang++-8 CXXSTD=03,11,14,17
-      addons:
-        apt:
-          packages:
-            - clang-8
-            - libstdc++-8-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-9
-      env: TOOLSET=clang COMPILER=clang++-9 CXXSTD=03,11,14,17
-      addons:
-        apt:
-          packages:
-            - clang-9
-            - libstdc++-9-dev
-          sources:
-            - sourceline: "ppa:ubuntu-toolchain-r/test"
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-10
-      env: TOOLSET=clang COMPILER=clang++-10 CXXSTD=03,11,14,17,20
-      addons:
-        apt:
-          packages:
-            - clang-10
-            - libstdc++-9-dev
-          sources:
-            - sourceline: "ppa:ubuntu-toolchain-r/test"
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-    - os: linux
-      dist: xenial
-      compiler: clang-libc++
-      env: TOOLSET=clang COMPILER=clang++-10 CXXSTD=03,11,14,17,20 CXXFLAGS="-stdlib=libc++" LINKFLAGS="-stdlib=libc++"
-      addons:
-        apt:
-          packages:
-            - clang-10
-            - libc++-10-dev
-            - libc++abi-10-dev
-          sources:
-            - sourceline: "ppa:ubuntu-toolchain-r/test"
-            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main"
-              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
-
-# clang, OS X
-# Disabled because OS X builds are slow on Travis CI
-#    - os: osx
-#      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
-#      osx_image: xcode9.4
-#
-#    - os: osx
-#      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
-#      osx_image: xcode10.3
-#
-#    - os: osx
-#      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,17
-#      osx_image: xcode11.2
-
-install:
-  - GIT_FETCH_JOBS=8
-  - BOOST_BRANCH=develop
-  - if [ "$TRAVIS_BRANCH" = "master" ]; then BOOST_BRANCH=master; fi
-  - cd ..
-  - git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
-  - cd boost-root
-  - git submodule init tools/build
-  - git submodule init tools/boostdep
-  - git submodule init tools/boost_install
-  - git submodule init libs/headers
-  - git submodule init libs/config
-  - git submodule update --jobs $GIT_FETCH_JOBS
-  - cp -r $TRAVIS_BUILD_DIR/* libs/detail
-  - python tools/boostdep/depinst/depinst.py --git_args "--jobs $GIT_FETCH_JOBS" detail
-  - ./bootstrap.sh
-  - ./b2 headers
-
-script:
-  - |-
-    echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
-  - BUILD_JOBS=`(nproc || sysctl -n hw.ncpu) 2> /dev/null`
-  - ./b2 -j $BUILD_JOBS libs/detail/test toolset=$TOOLSET cxxstd=$CXXSTD ${CXXFLAGS:+cxxflags="$CXXFLAGS"} ${LINKFLAGS:+linkflags="$LINKFLAGS"}
-
-notifications:
-  email:
-    on_success: always

CMakeLists.txt

@@ -3,12 +3,9 @@
 # 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
 
-# Partial (add_subdirectory only) and experimental CMake support
+cmake_minimum_required(VERSION 3.5...3.20)
-# Subject to change; please do not rely on the contents of this file yet.
 
-cmake_minimum_required(VERSION 3.5)
+project(boost_detail VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
-
-project(BoostDetail LANGUAGES CXX)
 
 add_library(boost_detail INTERFACE)
 add_library(Boost::detail ALIAS boost_detail)

appveyor.yml

@@ -0,0 +1,88 @@
+# Copyright 2025 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)
+
+version: 1.0.{build}-{branch}
+
+shallow_clone: true
+
+branches:
+  only:
+    - master
+    - develop
+    - /feature\/.*/
+
+environment:
+  matrix:
+    - TOOLSET: msvc-12.0
+      ADDRMD: 32,64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: msvc-14.0
+      ADDRMD: 32,64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: msvc-14.1
+      CXXSTD: 14,17,latest
+      ADDRMD: 32,64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    - TOOLSET: msvc-14.2
+      ADDRMD: 32,64
+      CXXSTD: 14,17,20,latest
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    - TOOLSET: msvc-14.3
+      ADDRMD: 32,64
+      CXXSTD: 14,17,20,latest
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
+    - TOOLSET: clang-win
+      ADDRMD: 32
+      CXXSTD: 14,17,latest
+      ENV_SCRIPT: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars32.bat
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    - TOOLSET: clang-win
+      ADDRMD: 64
+      CXXSTD: 14,17,latest
+      ENV_SCRIPT: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    - TOOLSET: gcc
+      CXXSTD: 11,14,1z
+      ADDPATH: C:\cygwin\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,1z
+      ADDPATH: C:\cygwin64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,17
+      ADDPATH: C:\mingw-w64\x86_64-7.3.0-posix-seh-rt_v5-rev0\mingw64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,17,2a
+      ADDPATH: C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+
+install:
+  - set GIT_FETCH_JOBS=8
+  - set BOOST_BRANCH=develop
+  - if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
+  - cd ..
+  - git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+  - cd boost-root
+  - git submodule init tools/build
+  - git submodule init tools/boostdep
+  - git submodule init tools/boost_install
+  - git submodule init libs/headers
+  - git submodule init libs/config
+  - git submodule update --jobs %GIT_FETCH_JOBS%
+  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\detail
+  - python tools/boostdep/depinst/depinst.py --git_args "--jobs %GIT_FETCH_JOBS%" detail
+  - cmd /c bootstrap
+  - b2 -d0 headers
+
+build: off
+
+test_script:
+  - PATH=%ADDPATH%%PATH%
+  - if not "%ENV_SCRIPT%" == "" call "%ENV_SCRIPT%"
+  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
+  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
+  - if not "%THREADING%" == "" set THREADING=threading=%THREADING%
+  - b2 -j %NUMBER_OF_PROCESSORS% libs/detail/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% %THREADING%

build.jam

@@ -0,0 +1,27 @@
+# Copyright René Ferdinand Rivera Morell 2023-2024
+# 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)
+
+require-b2 5.2 ;
+
+constant boost_dependencies :
+    /boost/config//boost_config
+    /boost/core//boost_core
+    /boost/preprocessor//boost_preprocessor
+    /boost/static_assert//boost_static_assert
+    /boost/type_traits//boost_type_traits ;
+
+project /boost/detail
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_detail : : : : <library>$(boost_dependencies) ]
+    [ alias all : boost_detail test ]
+    ;
+
+call-if : boost-library detail
+    ;
+

doc/html/minimal.css

@@ -1,6 +1,6 @@
 /*
 
-  <20> Copyright Beman Dawes, 2007
+  Copyright (c) 2007 Beman Dawes
 
   Distributed under the Boost Software License, Version 1.0.
   See www.boost.org/LICENSE_1_0.txt

include/boost/detail/bitmask.hpp

@@ -1,6 +1,7 @@
 //  boost/detail/bitmask.hpp  ------------------------------------------------//
 
 //  Copyright Beman Dawes 2006
+//  Copyright Andrey Semashev 2025
 
 //  Distributed under the Boost Software License, Version 1.0
 //  http://www.boost.org/LICENSE_1_0.txt
@@ -18,41 +19,73 @@
 #define BOOST_BITMASK_HPP
 
 #include <boost/config.hpp>
-#include <boost/cstdint.hpp>
+
+#if defined(__has_builtin)
+#if __has_builtin(__underlying_type)
+#define BOOST_BITMASK_DETAIL_UNDERLYING_TYPE(enum_type) __underlying_type(enum_type)
+#endif
+#endif
+
+#if !defined(BOOST_BITMASK_DETAIL_UNDERLYING_TYPE) && \
+    ((defined(BOOST_GCC_VERSION) && (BOOST_GCC_VERSION >= 40700)) || (defined(_MSC_VER) && (_MSC_VER >= 1700)))
+#define BOOST_BITMASK_DETAIL_UNDERLYING_TYPE(enum_type) __underlying_type(enum_type)
+#endif
+
+#if !defined(BOOST_BITMASK_DETAIL_UNDERLYING_TYPE)
+#include <type_traits>
+#endif
+
+namespace boost {
+namespace detail {
+namespace bitmask {
+
+#if defined(BOOST_BITMASK_DETAIL_UNDERLYING_TYPE)
+template< typename Enum >
+using underlying_type_t = BOOST_BITMASK_DETAIL_UNDERLYING_TYPE(Enum);
+#elif (BOOST_CXX_VERSION >= 201402)
+using std::underlying_type_t;
+#else
+template< typename Enum >
+using underlying_type_t = typename std::underlying_type< Enum >::type;
+#endif
+
+}}}
+
+#undef BOOST_BITMASK_DETAIL_UNDERLYING_TYPE
 
 #define BOOST_BITMASK(Bitmask)                                                                                  \
                                                                                                                 \
-  inline BOOST_CONSTEXPR Bitmask operator| (Bitmask x , Bitmask y )       \
+  inline BOOST_CONSTEXPR Bitmask operator| (Bitmask x, Bitmask y) BOOST_NOEXCEPT                                \
-  { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x)     \
+  { return static_cast< Bitmask >(static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x)      \
-      | static_cast<boost::int_least32_t>(y)); }                          \
+      | static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(y)); }                            \
                                                                                                                 \
-  inline BOOST_CONSTEXPR Bitmask operator& (Bitmask x , Bitmask y )       \
+  inline BOOST_CONSTEXPR Bitmask operator& (Bitmask x, Bitmask y) BOOST_NOEXCEPT                                \
-  { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x)     \
+  { return static_cast< Bitmask >(static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x)      \
-      & static_cast<boost::int_least32_t>(y)); }                          \
+      & static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(y)); }                            \
                                                                                                                 \
-  inline BOOST_CONSTEXPR Bitmask operator^ (Bitmask x , Bitmask y )       \
+  inline BOOST_CONSTEXPR Bitmask operator^ (Bitmask x, Bitmask y) BOOST_NOEXCEPT                                \
-  { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x)     \
+  { return static_cast< Bitmask >(static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x)      \
-      ^ static_cast<boost::int_least32_t>(y)); }                          \
+      ^ static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(y)); }                            \
                                                                                                                 \
-  inline BOOST_CONSTEXPR Bitmask operator~ (Bitmask x )                   \
+  inline BOOST_CONSTEXPR Bitmask operator~ (Bitmask x) BOOST_NOEXCEPT                                           \
-  { return static_cast<Bitmask>(~static_cast<boost::int_least32_t>(x)); } \
+  { return static_cast< Bitmask >(~static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x)); } \
                                                                                                                 \
-  inline Bitmask & operator&=(Bitmask& x , Bitmask y)                     \
+  inline BOOST_CXX14_CONSTEXPR Bitmask& operator&=(Bitmask& x, Bitmask y) BOOST_NOEXCEPT                        \
-  { x = x & y ; return x ; }                                              \
+  { x = x & y; return x; }                                                                                      \
                                                                                                                 \
-  inline Bitmask & operator|=(Bitmask& x , Bitmask y)                     \
+  inline BOOST_CXX14_CONSTEXPR Bitmask& operator|=(Bitmask& x, Bitmask y) BOOST_NOEXCEPT                        \
-  { x = x | y ; return x ; }                                              \
+  { x = x | y; return x; }                                                                                      \
                                                                                                                 \
-  inline Bitmask & operator^=(Bitmask& x , Bitmask y)                     \
+  inline BOOST_CXX14_CONSTEXPR Bitmask& operator^=(Bitmask& x, Bitmask y) BOOST_NOEXCEPT                        \
-  { x = x ^ y ; return x ; }                                              \
+  { x = x ^ y; return x; }                                                                                      \
                                                                                                                 \
   /* Boost extensions to [bitmask.types] */                                                                     \
                                                                                                                 \
-  inline BOOST_CONSTEXPR bool operator!(Bitmask x)                        \
+  inline BOOST_CONSTEXPR bool operator!(Bitmask x) BOOST_NOEXCEPT                                               \
-  { return !static_cast<int>(x); }                                        \
+  { return !static_cast< ::boost::detail::bitmask::underlying_type_t< Bitmask > >(x); }                         \
                                                                                                                 \
-  inline BOOST_CONSTEXPR bool bitmask_set(Bitmask x)                      \
+  BOOST_DEPRECATED("bitmask_set(enum) is deprecated, use !!enum or comparison operators instead")               \
+  inline BOOST_CONSTEXPR bool bitmask_set(Bitmask x) BOOST_NOEXCEPT                                             \
   { return !!x; }
 
 #endif // BOOST_BITMASK_HPP
-

include/boost/detail/utf8_codecvt_facet.hpp

@@ -109,28 +109,29 @@ BOOST_UTF8_BEGIN_NAMESPACE
 #define BOOST_UTF8_DECL
 #endif
 
-struct BOOST_UTF8_DECL utf8_codecvt_facet :
+struct BOOST_SYMBOL_VISIBLE utf8_codecvt_facet :
     public std::codecvt<wchar_t, char, std::mbstate_t>
 {
 public:
-    explicit utf8_codecvt_facet(std::size_t no_locale_manage=0);
+    BOOST_UTF8_DECL explicit utf8_codecvt_facet(std::size_t no_locale_manage = 0);
-    virtual ~utf8_codecvt_facet();
+    BOOST_UTF8_DECL virtual ~utf8_codecvt_facet();
+
 protected:
-    virtual std::codecvt_base::result do_in(
+    BOOST_UTF8_DECL virtual std::codecvt_base::result do_in(
         std::mbstate_t& state,
         const char * from,
         const char * from_end,
         const char * & from_next,
         wchar_t * to,
         wchar_t * to_end,
-        wchar_t*& to_next
+        wchar_t * & to_next
     ) const;
 
-    virtual std::codecvt_base::result do_out(
+    BOOST_UTF8_DECL virtual std::codecvt_base::result do_out(
         std::mbstate_t & state,
         const wchar_t * from,
         const wchar_t * from_end,
-        const wchar_t*  & from_next,
+        const wchar_t * & from_next,
         char * to,
         char * to_end,
         char * & to_next
@@ -150,11 +151,11 @@ protected:
         return get_octet_count(lead_octet) - 1;
     }
 
-    static unsigned int get_octet_count(unsigned char lead_octet);
+    BOOST_UTF8_DECL static unsigned int get_octet_count(unsigned char lead_octet);
 
     // How many "continuing octets" will be needed for this word
     // ==   total octets - 1.
-    int get_cont_octet_out_count(wchar_t word) const ;
+    BOOST_UTF8_DECL static int get_cont_octet_out_count(wchar_t word);
 
     virtual bool do_always_noconv() const BOOST_NOEXCEPT_OR_NOTHROW {
         return false;
@@ -162,7 +163,7 @@ protected:
 
     // UTF-8 isn't really stateful since we rewind on partial conversions
     virtual std::codecvt_base::result do_unshift(
-        std::mbstate_t&,
+        std::mbstate_t &,
         char * from,
         char * /*to*/,
         char * & next
@@ -178,7 +179,7 @@ protected:
 
     // How many char objects can I process to get <= max_limit
     // wchar_t objects?
-    virtual int do_length(
+    BOOST_UTF8_DECL virtual int do_length(
         std::mbstate_t &,
         const char * from,
         const char * from_end,

include/boost/detail/utf8_codecvt_facet.ipp

@@ -30,17 +30,30 @@ BOOST_UTF8_BEGIN_NAMESPACE
 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
 // implementation for wchar_t
 
-utf8_codecvt_facet::utf8_codecvt_facet(
+namespace detail {
+
+inline const wchar_t * get_octet1_modifier_table() BOOST_NOEXCEPT
+{
+    static const wchar_t octet1_modifier_table[] = {
+        0x00, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc
+    };
+    return octet1_modifier_table;
+}
+
+} // namespace detail
+
+
+BOOST_UTF8_DECL utf8_codecvt_facet::utf8_codecvt_facet(
     std::size_t no_locale_manage
 ) :
     std::codecvt<wchar_t, char, std::mbstate_t>(no_locale_manage)
 {}
 
-utf8_codecvt_facet::~utf8_codecvt_facet()
+BOOST_UTF8_DECL utf8_codecvt_facet::~utf8_codecvt_facet()
 {}
 
 // Translate incoming UTF-8 into UCS-4
-std::codecvt_base::result utf8_codecvt_facet::do_in(
+BOOST_UTF8_DECL std::codecvt_base::result utf8_codecvt_facet::do_in(
     std::mbstate_t& /*state*/,
     const char * from,
     const char * from_end,
@@ -57,10 +70,11 @@ std::codecvt_base::result utf8_codecvt_facet::do_in(
     // then mash the whole lot together. Note that each continuing
     // octet only uses 6 bits as unique values, so only shift by
     // multiples of 6 to combine.
+    const wchar_t * const octet1_modifier_table = detail::get_octet1_modifier_table();
     while (from != from_end && to != to_end) {
 
         // Error checking on the first octet
-        if (invalid_leading_octet(*from)){
+        if (invalid_leading_octet(*from)) {
             from_next = from;
             to_next = to;
             return std::codecvt_base::error;
@@ -69,21 +83,18 @@ std::codecvt_base::result utf8_codecvt_facet::do_in(
         // The first octet is adjusted by a value dependent upon
         // the number of "continuing octets" encoding the character
         const int cont_octet_count = get_cont_octet_count(*from);
-        const   wchar_t octet1_modifier_table[] =   {
-            0x00, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc
-        };
 
         // The unsigned char conversion is necessary in case char is
         // signed (I learned this the hard way)
         wchar_t ucs_result =
             (unsigned char)(*from++) - octet1_modifier_table[cont_octet_count];
 
-        // Invariants   : 
+        // Invariants:
         //   1) At the start of the loop, 'i' continuing characters have been
         //      processed
         //   2) *from points to the next continuing character to be processed.
         int i = 0;
-        while(i != cont_octet_count && from != from_end) {
+        while (i != cont_octet_count && from != from_end) {
 
             // Error checking on continuing characters
             if (invalid_continuing_octet(*from)) {
@@ -103,7 +114,7 @@ std::codecvt_base::result utf8_codecvt_facet::do_in(
         // If the buffer ends with an incomplete unicode character...
         if (from == from_end && i != cont_octet_count) {
             // rewind "from" to before the current character translation
-            from_next = from - (i+1); 
+            from_next = from - (i + 1);
             to_next = to;
             return std::codecvt_base::partial;
         }
@@ -113,11 +124,13 @@ std::codecvt_base::result utf8_codecvt_facet::do_in(
     to_next = to;
 
     // Were we done converting or did we run out of destination space?
-    if(from == from_end) return std::codecvt_base::ok;
+    if (from == from_end)
-    else return std::codecvt_base::partial;
+        return std::codecvt_base::ok;
+    else
+        return std::codecvt_base::partial;
 }
 
-std::codecvt_base::result utf8_codecvt_facet::do_out(
+BOOST_UTF8_DECL std::codecvt_base::result utf8_codecvt_facet::do_out(
     std::mbstate_t& /*state*/,
     const wchar_t * from,
     const wchar_t * from_end,
@@ -127,11 +140,7 @@ std::codecvt_base::result utf8_codecvt_facet::do_out(
     char * & to_next
 ) const
 {
-    // RG - consider merging this table with the other one
+    const wchar_t * const octet1_modifier_table = detail::get_octet1_modifier_table();
-    const wchar_t octet1_modifier_table[] = {
-        0x00, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc
-    };
-
     wchar_t max_wchar = (std::numeric_limits<wchar_t>::max)();
     while (from != from_end && to != to_end) {
 
@@ -145,7 +154,7 @@ std::codecvt_base::result utf8_codecvt_facet::do_out(
         int cont_octet_count = get_cont_octet_out_count(*from);
 
         // RG - comment this formula better
-        int shift_exponent = (cont_octet_count) *   6;
+        int shift_exponent = cont_octet_count * 6;
 
         // Process the first character
         *to++ = static_cast<char>(octet1_modifier_table[cont_octet_count] +
@@ -163,23 +172,26 @@ std::codecvt_base::result utf8_codecvt_facet::do_out(
             ++i;
         }
         // If we filled up the out buffer before encoding the character
-        if(to   == to_end && i != cont_octet_count) {
+        if (to == to_end && i != cont_octet_count) {
             from_next = from;
-            to_next = to - (i+1);
+            to_next = to - (i + 1);
             return std::codecvt_base::partial;
         }
         ++from;
     }
     from_next = from;
     to_next = to;
+
     // Were we done or did we run out of destination space
-    if(from == from_end) return std::codecvt_base::ok;
+    if (from == from_end)
-    else return std::codecvt_base::partial;
+        return std::codecvt_base::ok;
+    else
+        return std::codecvt_base::partial;
 }
 
 // How many char objects can I process to get <= max_limit
 // wchar_t objects?
-int utf8_codecvt_facet::do_length(
+BOOST_UTF8_DECL int utf8_codecvt_facet::do_length(
     std::mbstate_t &,
     const char * from,
     const char * from_end,
@@ -189,30 +201,21 @@ int utf8_codecvt_facet::do_length(
         throw()
 #endif
 {
-    // RG - this code is confusing!  I need a better way to express it.
+    const char * from_next = from;
-    // and test cases.
+    for (std::size_t char_count = 0u; char_count < max_limit && from_next < from_end; ++char_count) {
-
+        unsigned int octet_count = get_octet_count(*from_next);
-    // Invariants:
+        // The buffer may represent incomplete characters, so terminate early if one is found
-    // 1) last_octet_count has the size of the last measured character
+        if (octet_count > static_cast<std::size_t>(from_end - from_next))
-    // 2) char_count holds the number of characters shown to fit
+            break;
-    // within the bounds so far (no greater than max_limit)
+        from_next += octet_count;
-    // 3) from_next points to the octet 'last_octet_count' before the
-    // last measured character.  
-    int last_octet_count=0;
-    std::size_t char_count = 0;
-    const char* from_next = from;
-    // Use "<" because the buffer may represent incomplete characters
-    while (from_next+last_octet_count <= from_end && char_count <= max_limit) {
-        from_next += last_octet_count;
-        last_octet_count = (get_octet_count(*from_next));
-        ++char_count;
     }
-    return static_cast<int>(from_next-from);
+
+    return static_cast<int>(from_next - from);
 }
 
-unsigned int utf8_codecvt_facet::get_octet_count(
+BOOST_UTF8_DECL unsigned int utf8_codecvt_facet::get_octet_count(
     unsigned char lead_octet
-){
+) {
     // if the 0-bit (MSB) is 0, then 1 character
     if (lead_octet <= 0x7f) return 1;
 
@@ -229,7 +232,7 @@ unsigned int utf8_codecvt_facet::get_octet_count(
 namespace detail {
 
 template<std::size_t s>
-int get_cont_octet_out_count_impl(wchar_t word){
+inline int get_cont_octet_out_count_impl(wchar_t word) {
     if (word < 0x80) {
         return 0;
     }
@@ -240,7 +243,7 @@ int get_cont_octet_out_count_impl(wchar_t word){
 }
 
 template<>
-int get_cont_octet_out_count_impl<4>(wchar_t word){
+inline int get_cont_octet_out_count_impl<4>(wchar_t word) {
     if (word < 0x80) {
         return 0;
     }
@@ -282,11 +285,12 @@ int get_cont_octet_out_count_impl<4>(wchar_t word){
 
 // How many "continuing octets" will be needed for this word
 // ==   total octets - 1.
-int utf8_codecvt_facet::get_cont_octet_out_count(
+BOOST_UTF8_DECL int utf8_codecvt_facet::get_cont_octet_out_count(
     wchar_t word
-) const {
+) {
     return detail::get_cont_octet_out_count_impl<sizeof(wchar_t)>(word);
 }
+
 BOOST_UTF8_END_NAMESPACE
 
 #endif

meta/libraries.json

@@ -19,7 +19,6 @@
         "Miscellaneous"
     ],
     "maintainers": [
-        "Beman Dawes <bdawes -at- acm.org>",
         "Robert Ramey <ramey -at- rrsd.com>",
         "Rene Rivera <grafikrobot -at- gmail.com>",
         "Andrey Semashev <andrey.semashev -at- gmail.com>"

test/Jamfile

@@ -5,28 +5,33 @@
 #   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 ################################################################################
 
+import testing ;
+import config : requires ;
+
 build-project container_fwd ;
 
 project detail/test
   : requirements
+    <library>/boost/detail//boost_detail
+    <library>/boost/type_traits//boost_type_traits
+    <c++-template-depth>300
     <toolset>clang:<cxxflags>-Wno-unused
     <toolset>clang:<cxxflags>-Wno-tautological-compare
-    <toolset>clang:<cxxflags>-ftemplate-depth-300
-    <toolset>gcc:<cxxflags>-ftemplate-depth-300
     <toolset>gcc:<define>_STLP_DEBUG
     # Do not enable libstdc++ debug mode because of gcc 10.1 bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95289
     # <toolset>gcc:<define>_GLIBCXX_DEBUG
-    <toolset>darwin:<cxxflags>-ftemplate-depth-300
   ;
 
 # import rules for testing conditional on config file variables
-import ../../config/checks/config : requires ;
+import-search /boost/config/checks ;
+import config : requires ;
 
 run binary_search_test.cpp ;
 run blank_test.cpp ;
-run is_sorted_test.cpp ;
+run bitmask_test.cpp : : : [ requires cxx11_scoped_enums ] ;
+run is_sorted_test.cpp /boost/array//boost_array ;
 run numeric_traits_test.cpp ;
-run is_xxx_test.cpp ;
+run is_xxx_test.cpp /boost/preprocessor//boost_preprocessor ;
 # run test_utf8_codecvt.cpp : : : [ requires std_wstreambuf ] ;
 run test_utf8_codecvt.cpp ;
 run allocator_utilities_test.cpp ;

test/bitmask_test.cpp

@@ -0,0 +1,184 @@
+/*
+ * 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)
+ *
+ * Copyright (c) 2025 Andrey Semashev
+ */
+
+#include <boost/detail/bitmask.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+enum unscoped_enum
+{
+    zero = 0,
+    one = 1,
+    two = 2,
+    four = 4
+};
+
+BOOST_BITMASK(unscoped_enum)
+
+void test_unscoped_enum()
+{
+    BOOST_TEST((one | two) == ((unscoped_enum)(1 | 2)));
+    BOOST_TEST((one & two) == ((unscoped_enum)(1 & 2)));
+    BOOST_TEST((one ^ two) == ((unscoped_enum)(1 ^ 2)));
+    BOOST_TEST((one | one) == ((unscoped_enum)(1 | 1)));
+    BOOST_TEST((one & one) == ((unscoped_enum)(1 & 1)));
+    BOOST_TEST((one ^ one) == ((unscoped_enum)(1 ^ 1)));
+    BOOST_TEST((~one) == ((unscoped_enum)(~1)));
+    {
+        unscoped_enum val = one;
+        val |= two;
+        BOOST_TEST(val == ((unscoped_enum)(1 | 2)));
+    }
+    {
+        unscoped_enum val = one;
+        val &= two;
+        BOOST_TEST(val == ((unscoped_enum)(1 & 2)));
+    }
+    {
+        unscoped_enum val = one;
+        val ^= two;
+        BOOST_TEST(val == ((unscoped_enum)(1 ^ 2)));
+    }
+    {
+        unscoped_enum val = one;
+        val |= one;
+        BOOST_TEST(val == ((unscoped_enum)(1 | 1)));
+    }
+    {
+        unscoped_enum val = one;
+        val &= one;
+        BOOST_TEST(val == ((unscoped_enum)(1 & 1)));
+    }
+    {
+        unscoped_enum val = one;
+        val ^= one;
+        BOOST_TEST(val == ((unscoped_enum)(1 ^ 1)));
+    }
+    BOOST_TEST(!zero);
+    BOOST_TEST(!!one);
+}
+
+
+enum class scoped_enum
+{
+    none = 0,
+    x = 8,
+    y = 16,
+    z = 32
+};
+
+BOOST_BITMASK(scoped_enum)
+
+void test_scoped_enum()
+{
+    BOOST_TEST((scoped_enum::x | scoped_enum::y) == ((scoped_enum)(8 | 16)));
+    BOOST_TEST((scoped_enum::x & scoped_enum::y) == ((scoped_enum)(8 & 16)));
+    BOOST_TEST((scoped_enum::x ^ scoped_enum::y) == ((scoped_enum)(8 ^ 16)));
+    BOOST_TEST((scoped_enum::x | scoped_enum::x) == ((scoped_enum)(8 | 8)));
+    BOOST_TEST((scoped_enum::x & scoped_enum::x) == ((scoped_enum)(8 & 8)));
+    BOOST_TEST((scoped_enum::x ^ scoped_enum::x) == ((scoped_enum)(8 ^ 8)));
+    BOOST_TEST((~scoped_enum::x) == ((scoped_enum)(~8)));
+    {
+        scoped_enum val = scoped_enum::x;
+        val |= scoped_enum::y;
+        BOOST_TEST(val == ((scoped_enum)(8 | 16)));
+    }
+    {
+        scoped_enum val = scoped_enum::x;
+        val &= scoped_enum::y;
+        BOOST_TEST(val == ((scoped_enum)(8 & 16)));
+    }
+    {
+        scoped_enum val = scoped_enum::x;
+        val ^= scoped_enum::y;
+        BOOST_TEST(val == ((scoped_enum)(8 ^ 16)));
+    }
+    {
+        scoped_enum val = scoped_enum::x;
+        val |= scoped_enum::x;
+        BOOST_TEST(val == ((scoped_enum)(8 | 8)));
+    }
+    {
+        scoped_enum val = scoped_enum::x;
+        val &= scoped_enum::x;
+        BOOST_TEST(val == ((scoped_enum)(8 & 8)));
+    }
+    {
+        scoped_enum val = scoped_enum::x;
+        val ^= scoped_enum::x;
+        BOOST_TEST(val == ((scoped_enum)(8 ^ 8)));
+    }
+    BOOST_TEST(!scoped_enum::none);
+    BOOST_TEST(!!scoped_enum::x);
+}
+
+
+namespace my_namespace {
+
+enum class namespaced_enum : unsigned int
+{
+    empty = 0,
+    a = 64,
+    b = 128,
+    c = 256
+};
+
+BOOST_BITMASK(namespaced_enum)
+
+} // namespace my_namespace
+
+void test_namespaced_enum()
+{
+    BOOST_TEST((my_namespace::namespaced_enum::a | my_namespace::namespaced_enum::b) == ((my_namespace::namespaced_enum)(64u | 128u)));
+    BOOST_TEST((my_namespace::namespaced_enum::a & my_namespace::namespaced_enum::b) == ((my_namespace::namespaced_enum)(64u & 128u)));
+    BOOST_TEST((my_namespace::namespaced_enum::a ^ my_namespace::namespaced_enum::b) == ((my_namespace::namespaced_enum)(64u ^ 128u)));
+    BOOST_TEST((my_namespace::namespaced_enum::a | my_namespace::namespaced_enum::a) == ((my_namespace::namespaced_enum)(64u | 64u)));
+    BOOST_TEST((my_namespace::namespaced_enum::a & my_namespace::namespaced_enum::a) == ((my_namespace::namespaced_enum)(64u & 64u)));
+    BOOST_TEST((my_namespace::namespaced_enum::a ^ my_namespace::namespaced_enum::a) == ((my_namespace::namespaced_enum)(64u ^ 64u)));
+    BOOST_TEST((~my_namespace::namespaced_enum::a) == ((my_namespace::namespaced_enum)(~64u)));
+    {
+        my_namespace::namespaced_enum val = my_namespace::namespaced_enum::a;
+        val |= my_namespace::namespaced_enum::b;
+        BOOST_TEST(val == ((my_namespace::namespaced_enum)(64u | 128u)));
+    }
+    {
+        my_namespace::namespaced_enum val = my_namespace::namespaced_enum::a;
+        val &= my_namespace::namespaced_enum::b;
+        BOOST_TEST(val == ((my_namespace::namespaced_enum)(64u & 128u)));
+    }
+    {
+        my_namespace::namespaced_enum val = my_namespace::namespaced_enum::a;
+        val ^= my_namespace::namespaced_enum::b;
+        BOOST_TEST(val == ((my_namespace::namespaced_enum)(64u ^ 128u)));
+    }
+    {
+        my_namespace::namespaced_enum val = my_namespace::namespaced_enum::a;
+        val |= my_namespace::namespaced_enum::a;
+        BOOST_TEST(val == ((my_namespace::namespaced_enum)(64u | 64u)));
+    }
+    {
+        my_namespace::namespaced_enum val = my_namespace::namespaced_enum::a;
+        val &= my_namespace::namespaced_enum::a;
+        BOOST_TEST(val == ((my_namespace::namespaced_enum)(64u & 64u)));
+    }
+    {
+        my_namespace::namespaced_enum val = my_namespace::namespaced_enum::a;
+        val ^= my_namespace::namespaced_enum::a;
+        BOOST_TEST(val == ((my_namespace::namespaced_enum)(64u ^ 64u)));
+    }
+    BOOST_TEST(!my_namespace::namespaced_enum::empty);
+    BOOST_TEST(!!my_namespace::namespaced_enum::a);
+}
+
+int main()
+{
+    test_unscoped_enum();
+    test_scoped_enum();
+    test_namespaced_enum();
+
+    return boost::report_errors();
+}

test/container_fwd/Jamfile

@@ -9,9 +9,12 @@ project detail/test/container_fwd
   : requirements
         <warnings>all
         <toolset>intel:<warnings>on
-        <toolset>gcc:<cxxflags>"-pedantic -Wstrict-aliasing -fstrict-aliasing -Wextra -Wsign-promo -Wunused-parameter -Wconversion"
+        <toolset>gcc:<warnings>pedantic
-        <toolset>darwin:<cxxflags>"-pedantic -Wstrict-aliasing -fstrict-aliasing -Wextra -Wsign-promo -Wunused-parameter -Wconversion"
+        <toolset>gcc:<cxxflags>"-Wstrict-aliasing -fstrict-aliasing -Wsign-promo -Wunused-parameter -Wconversion"
-        <toolset>clang:<cxxflags>"-pedantic -Wextra -Wmismatched-tags"
+        <toolset>darwin:<warnings>pedantic
+        <toolset>darwin:<cxxflags>"-Wstrict-aliasing -fstrict-aliasing -Wsign-promo -Wunused-parameter -Wconversion"
+        <toolset>clang:<warnings>pedantic
+        <toolset>clang:<cxxflags>"-Wmismatched-tags"
         <warnings-as-errors>on
   ;
 

test/test_utf8_codecvt.cpp

@@ -19,6 +19,10 @@
 #include <boost/config.hpp>
 #include <boost/core/no_exceptions_support.hpp>
 
+#if !defined(BOOST_NO_EXCEPTIONS)
+#include <exception>
+#endif
+
 #define BOOST_UTF8_BEGIN_NAMESPACE namespace boost { namespace detail {
 #define BOOST_UTF8_END_NAMESPACE } }
 #include <boost/detail/utf8_codecvt_facet.hpp>
@@ -47,6 +51,9 @@ namespace std{
 
 #include <boost/core/lightweight_test.hpp>
 
+// Directory of the test executable
+std::string executable_dir;
+
 template<std::size_t s>
 struct test_data
 {
@@ -134,7 +141,7 @@ test_main(int /* argc */, char * /* argv */[]) {
     // Send our test UTF-8 data to file
     {
         std::ofstream ofs;
-        ofs.open("test.dat");
+        ofs.open((executable_dir + "test.dat").c_str());
         std::copy(
             td::utf8_encoding,
             td::utf8_encoding + sizeof(td::utf8_encoding) / sizeof(unsigned char),
@@ -147,7 +154,7 @@ test_main(int /* argc */, char * /* argv */[]) {
     {
         std::wifstream ifs;
         ifs.imbue(utf8_locale);
-        ifs.open("test.dat");
+        ifs.open((executable_dir + "test.dat").c_str());
 
         std::wint_t item = 0;
         // note can't use normal vector from iterator constructor because
@@ -169,7 +176,7 @@ test_main(int /* argc */, char * /* argv */[]) {
     {
         std::wofstream ofs;
         ofs.imbue(utf8_locale);
-        ofs.open("test2.dat");
+        ofs.open((executable_dir + "test2.dat").c_str());
         std::copy(
             from_file.begin(),
             from_file.end(),
@@ -182,17 +189,17 @@ test_main(int /* argc */, char * /* argv */[]) {
         typedef std::istream_iterator<utf8_t> is_iter;
         is_iter end_iter;
 
-        std::ifstream ifs1("test.dat");
+        std::ifstream ifs1((executable_dir + "test.dat").c_str());
         is_iter it1(ifs1);
         std::vector<utf8_t> data1;
         std::copy(it1, end_iter, std::back_inserter(data1));
 
-        std::ifstream ifs2("test2.dat");
+        std::ifstream ifs2((executable_dir + "test2.dat").c_str());
         is_iter it2(ifs2);
         std::vector<utf8_t> data2;
         std::copy(it2, end_iter, std::back_inserter(data2));
 
-        BOOST_TEST(data1 == data2);
+        BOOST_TEST_ALL_EQ(data1.begin(), data1.end(), data2.begin(), data2.end());
     }
 
     // some libraries have trouble that only shows up with longer strings
@@ -230,7 +237,7 @@ test_main(int /* argc */, char * /* argv */[]) {
     {
         std::wofstream ofs;
         ofs.imbue(utf8_locale);
-        ofs.open("test3.dat");
+        ofs.open((executable_dir + "test3.dat").c_str());
         std::copy(
             test3_data,
             test3_data + l,
@@ -242,7 +249,7 @@ test_main(int /* argc */, char * /* argv */[]) {
     {
         std::wifstream ifs;
         ifs.imbue(utf8_locale);
-        ifs.open("test3.dat");
+        ifs.open((executable_dir + "test3.dat").c_str());
         ifs >> std::noskipws;
         BOOST_TEST(
             std::equal(
@@ -278,25 +285,32 @@ test_main(int /* argc */, char * /* argv */[]) {
 }
 
 int
-main(int argc, char * argv[]){
+main(int argc, char * argv[]) {
+    if (argc > 0) {
+        // We need to save the path to executable to create test files in the same directory.
+        // This allows running different configurations of the test (release/debug, different C++ versions, etc.) in parallel.
+        std::string exec_name = argv[0];
+        std::string::size_type last_dir_sep_pos = exec_name.find_last_of("/\\");
+        if (last_dir_sep_pos != std::string::npos)
+            executable_dir = exec_name.substr(0, last_dir_sep_pos + 1); // include the trailing directory separator
+    }
 
     int retval = 1;
     BOOST_TRY{
         retval = test_main(argc, argv);
     }
-    #ifndef BOOST_NO_EXCEPTION_STD_NAMESPACE
+#ifndef BOOST_NO_EXCEPTION_STD_NAMESPACE
     BOOST_CATCH(const std::exception & e){
         BOOST_ERROR(e.what());
     }
-    #endif
+#endif
     BOOST_CATCH(...){
         BOOST_ERROR("failed with uncaught exception:");
     }
     BOOST_CATCH_END
 
     int error_count = boost::report_errors();
-    if(error_count > 0)
+    if (error_count > 0)
         retval = error_count;
     return retval;
 }
-