Fix ccache saving on cache hit (#70)

See boostorg/boost-ci#166

.appveyor.yml

@@ -0,0 +1,113 @@
+# Copyright 2016, 2017 Peter Dimov
+# Copyright 2017 - 2019 James E. King III
+# Copyright 2019 - 2021 Alexander Grund
+# 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)
+
+#
+# Generic Appveyor build script for boostorg repositories
+# See: https://github.com/boostorg/boost-ci/
+#
+# Instructions for customizing this script for your library:
+#
+# 1. Customize the compilers and language levels you want.
+# 2. If you have more than include/, src/, test/, example/, examples/,
+#    benchmark/ or tools/ directories, set the environment variable DEPINST.
+#    For example if your build uses code in "bench/" and "fog/" directories:
+#      - DEPINST: --include bench --include fog
+# 3. Enable pull request builds in your boostorg/<library> account.
+#
+# That's it - the script will do everything else for you.
+#
+
+version: 1.0.{build}-{branch}
+
+shallow_clone: true
+
+branches:
+  only:
+    - master
+    - develop
+    - /bugfix\/.*/
+    - /feature\/.*/
+    - /fix\/.*/
+    - /pr\/.*/
+
+matrix:
+  fast_finish: false
+  # Adding MAYFAIL to any matrix job allows it to fail but the build stays green:
+  allow_failures:
+    - MAYFAIL: true
+
+environment:
+  global:
+    B2_CI_VERSION: 1
+    GIT_FETCH_JOBS: 4
+    # see: http://www.boost.org/build/doc/html/bbv2/overview/invocation.html#bbv2.overview.invocation.properties
+    # to use the default for a given environment, comment it out; recommend you build debug and release however:
+    # on Windows it is important to exercise all the possibilities, especially shared vs static, however most
+    # libraries that care about this exercise it in their Jamfiles...
+    B2_ADDRESS_MODEL: 32,64
+    B2_LINK: shared,static
+    # B2_THREADING: threading=multi,single
+    B2_VARIANT: release
+
+  matrix:
+    - FLAVOR: Visual Studio 2017 C++2a Strict
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      B2_CXXFLAGS: -permissive-
+      B2_CXXSTD: 2a
+      B2_TOOLSET: msvc-14.1
+
+    - FLAVOR: Visual Studio 2017 C++14/17
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      B2_CXXSTD: 14,17
+      B2_TOOLSET: msvc-14.1
+
+    - FLAVOR: clang-cl
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      B2_ADDRESS_MODEL: 64
+      B2_CXXSTD: 11,14,17
+      B2_TOOLSET: clang-win
+
+    - FLAVOR: Visual Studio 2015, 2013
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      B2_TOOLSET: msvc-12.0,msvc-14.0
+
+    - FLAVOR: Visual Studio 2008, 2010, 2012
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      B2_TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0
+      B2_ADDRESS_MODEL: 32 # No 64bit support
+
+    - FLAVOR: cygwin (32-bit)
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      ADDPATH: C:\cygwin\bin;
+      B2_ADDRESS_MODEL: 32
+      B2_CXXSTD: 03,11,14,1z
+      B2_TOOLSET: gcc
+
+    - FLAVOR: cygwin (64-bit)
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      ADDPATH: C:\cygwin64\bin;
+      B2_ADDRESS_MODEL: 64
+      B2_CXXSTD: 03,11,14,1z
+      B2_TOOLSET: gcc
+
+    - FLAVOR: mingw64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      ADDPATH: C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin;
+      B2_ADDRESS_MODEL: 64
+      B2_CXXSTD: 03,11,14,17,2a
+      B2_TOOLSET: gcc
+
+install:
+  - git clone --depth 1 https://github.com/boostorg/boost-ci.git C:\boost-ci-cloned
+  # Copy ci folder if not testing Boost.CI
+  - if NOT "%APPVEYOR_PROJECT_NAME%" == "boost-ci" xcopy /s /e /q /i /y C:\boost-ci-cloned\ci .\ci
+  - rmdir /s /q C:\boost-ci-cloned
+  - ci\appveyor\install.bat
+
+build: off
+
+test_script: ci\build.bat
+

.codecov.yml

@@ -0,0 +1,31 @@
+# Copyright 2019 - 2021 Alexander Grund
+# 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)
+#
+# Sample codecov configuration file. Edit as required
+
+codecov:
+  max_report_age: off
+  require_ci_to_pass: yes
+  notify:
+    # Increase this if you have multiple coverage collection jobs
+    after_n_builds: 2
+    wait_for_ci: yes
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+# Change how pull request comments look
+comment:
+  layout: "reach,diff,flags,files,footer"
+
+# Ignore specific files or folders. Glob patterns are supported.
+# See https://docs.codecov.com/docs/ignoring-paths
+ignore:
+  - libs/dynamic_bitset/test/
+  - test/

.github/workflows/ci.yml

@@ -0,0 +1,334 @@
+# Copyright 2020-2021 Peter Dimov
+# Copyright 2021 Andrey Semashev
+# Copyright 2021 Alexander Grund
+# Copyright 2022 James E. King III
+#
+# 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
+      - bugfix/**
+      - feature/**
+      - fix/**
+      - pr/**
+
+concurrency:
+  group: ${{format('{0}:{1}', github.repository, github.ref)}}
+  cancel-in-progress: true
+
+env:
+  GIT_FETCH_JOBS: 8
+  NET_RETRY_COUNT: 5
+  B2_CI_VERSION: 1
+  B2_VARIANT: debug,release
+  B2_LINK: shared,static
+  LCOV_BRANCH_COVERAGE: 0
+  CODECOV_NAME: Github Actions
+
+jobs:
+  posix:
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Linux, gcc
+          - { compiler: gcc-4.8,   cxxstd: '03,11',          os: ubuntu-18.04 }
+          - { compiler: gcc-5,     cxxstd: '03,11,14,1z',    os: ubuntu-18.04 }
+          - { compiler: gcc-6,     cxxstd: '03,11,14,17',    os: ubuntu-18.04 }
+          - { compiler: gcc-7,     cxxstd: '03,11,14,17',    os: ubuntu-18.04 }
+          - { compiler: gcc-8,     cxxstd: '03,11,14,17,2a', os: ubuntu-18.04 }
+          - { compiler: gcc-9,     cxxstd: '03,11,14,17,2a', os: ubuntu-18.04 }
+          - { compiler: gcc-10,    cxxstd: '03,11,14,17,20', os: ubuntu-20.04 }
+          - { compiler: gcc-11,    cxxstd: '03,11,14,17,20', os: ubuntu-20.04 }
+          - { name: GCC w/ sanitizers, sanitize: yes,
+              compiler: gcc-11,    cxxstd: '03,11,14,17,20', os: ubuntu-20.04 }
+          - { name: Collect coverage, coverage: yes,
+              compiler: gcc-10,    cxxstd: '03,11',          os: ubuntu-20.04, install: 'g++-10-multilib', address-model: '32,64' }
+
+          # Linux, clang
+          - { compiler: clang-3.5, cxxstd: '03,11',          os: ubuntu-20.04, container: 'ubuntu:16.04' }
+          - { compiler: clang-3.6, cxxstd: '03,11,14',       os: ubuntu-20.04, container: 'ubuntu:16.04' }
+          - { compiler: clang-3.7, cxxstd: '03,11,14',       os: ubuntu-20.04, container: 'ubuntu:16.04' }
+          - { compiler: clang-3.8, cxxstd: '03,11,14',       os: ubuntu-20.04, container: 'ubuntu:16.04' }
+          - { compiler: clang-3.9, cxxstd: '03,11,14',       os: ubuntu-18.04 }
+          - { compiler: clang-4.0, cxxstd: '03,11,14',       os: ubuntu-18.04 }
+          - { compiler: clang-5.0, cxxstd: '03,11,14,1z',    os: ubuntu-18.04 }
+          - { compiler: clang-6.0, cxxstd: '03,11,14,17',    os: ubuntu-18.04 }
+          - { compiler: clang-7,   cxxstd: '03,11,14,17',    os: ubuntu-18.04 }
+          # Note: clang-8 does not fully support C++20, so it is not compatible with some libstdc++ versions in this mode
+          - { compiler: clang-8,   cxxstd: '03,11,14,17,2a', os: ubuntu-18.04, install: 'clang-8 g++-7', gcc_toolchain: 7 }
+          - { compiler: clang-9,   cxxstd: '03,11,14,17,2a', os: ubuntu-20.04 }
+          - { compiler: clang-10,  cxxstd: '03,11,14,17,20', os: ubuntu-20.04 }
+          - { compiler: clang-11,  cxxstd: '03,11,14,17,20', os: ubuntu-20.04 }
+          - { name: Clang w/ valgrind, valgrind: yes,
+              compiler: clang-12,  cxxstd: '03,11,14,17,20', os: ubuntu-20.04, install: 'valgrind' }
+
+          # libc++
+          - { compiler: clang-6.0, cxxstd: '03,11,14',       os: ubuntu-18.04, stdlib: libc++, install: 'clang-6.0 libc++-dev libc++abi-dev' }
+          - { compiler: clang-12,  cxxstd: '03,11,14,17,20', os: ubuntu-20.04, stdlib: libc++, install: 'clang-12 libc++-12-dev libc++abi-12-dev' }
+          - { name: Clang w/ sanitizers, sanitize: yes,
+              compiler: clang-12,  cxxstd: '03,11,14,17,20', os: ubuntu-20.04, stdlib: libc++, install: 'clang-12 libc++-12-dev libc++abi-12-dev' }
+
+          # OSX, clang
+          - { compiler: clang,     cxxstd: '03,11,14,17,2a', os: macos-10.15, sanitize: yes }
+
+          # Coverity Scan
+          # requires two github secrets in repo to activate; see ci/github/coverity.sh
+          # does not run on pull requests, only on pushes into develop and master
+          - { name: Coverity, coverity: yes,
+              compiler: clang-10,  cxxstd: '17',             os: ubuntu-20.04, ccache: no }
+
+          # multiarch (bigendian testing) - does not support coverage yet
+          - { name: Big-endian, multiarch: yes,
+              compiler: clang,     cxxstd: '17',             os: ubuntu-20.04, ccache: no, distro: fedora, edition: 34, arch: s390x }
+
+
+    timeout-minutes: 120
+    runs-on: ${{matrix.os}}
+    container: ${{matrix.container}}
+    env: {B2_USE_CCACHE: 1}
+
+    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}}" ] && [ -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
+                # Need (newer) git
+                for i in {1..${NET_RETRY_COUNT:-3}}; do sudo -E add-apt-repository -y ppa:git-core/ppa && break || sleep 10; done
+                apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+                apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y g++ python libpython-dev git
+            fi
+            # multiple job types are not compatible with ccache, they use "ccache: no" in the matrix
+            if [[ "${{ matrix.ccache }}" == "no" ]]; then
+                echo "B2_USE_CCACHE=0" >> $GITHUB_ENV
+            fi
+            if [[ "${{ matrix.valgrind }}" == "yes" ]]; then
+                echo "B2_DEFINES=BOOST_NO_STRESS_TEST=1" >> $GITHUB_ENV
+                echo "B2_TESTFLAGS=testing.launcher=valgrind" >> $GITHUB_ENV
+                echo "B2_FLAGS=define=BOOST_USE_VALGRIND=1" >> $GITHUB_ENV
+                echo "VALGRIND_OPTS=--error-exitcode=1" >> $GITHUB_ENV
+            fi
+            git config --global pack.threads 0
+
+      - uses: actions/checkout@v3
+        with:
+          # For coverage builds fetch the whole history, else only 1 commit using a 'fake ternary'
+          fetch-depth: ${{ matrix.coverage && '0' || '1' }}
+
+      - name: Cache ccache
+        uses: actions/cache@v3
+        if: env.B2_USE_CCACHE
+        with:
+          path: ~/.ccache
+          key: ${{matrix.os}}-${{matrix.container}}-${{matrix.compiler}}-${{github.sha}}
+          restore-keys: |
+            ${{matrix.os}}-${{matrix.container}}-${{matrix.compiler}}-
+            ${{matrix.os}}-${{matrix.container}}-${{matrix.compiler}}
+
+      - name: Fetch Boost.CI
+        uses: actions/checkout@v3
+        with:
+          repository: boostorg/boost-ci
+          ref: master
+          path: boost-ci-cloned
+
+      - name: Get CI scripts folder
+        run: |
+            # Copy ci folder if not testing Boost.CI
+            [[ "$GITHUB_REPOSITORY" =~ "boost-ci" ]] || cp -r boost-ci-cloned/ci .
+            rm -rf boost-ci-cloned
+
+      - name: Install packages
+        if: startsWith(matrix.os, 'ubuntu')
+        run: |
+            SOURCE_KEYS=(${{join(matrix.source_keys, ' ')}})
+            SOURCES=(${{join(matrix.sources, ' ')}})
+            # Add this by default
+            SOURCES+=(ppa:ubuntu-toolchain-r/test)
+            for key in "${SOURCE_KEYS[@]}"; do
+                for i in {1..$NET_RETRY_COUNT}; do
+                    wget -O - "$key" | sudo apt-key add - && break || sleep 10
+                done
+            done
+            for source in "${SOURCES[@]}"; do
+                for i in {1..$NET_RETRY_COUNT}; do
+                    sudo add-apt-repository $source && break || sleep 10
+                done
+            done
+            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+            if [[ -z "${{matrix.install}}" ]]; then
+                pkgs="${{matrix.compiler}}"
+                pkgs="${pkgs/gcc-/g++-}"
+            else
+                pkgs="${{matrix.install}}"
+            fi
+            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y $pkgs
+
+      - name: Setup GCC Toolchain
+        if: matrix.gcc_toolchain
+        run: |
+            GCC_TOOLCHAIN_ROOT="$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 multiarch
+        if: matrix.multiarch
+        run: |
+          sudo apt-get install --no-install-recommends -y binfmt-support qemu-user-static
+          sudo docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+          git clone https://github.com/jeking3/bdde.git
+          echo "$(pwd)/bdde/bin/linux" >> ${GITHUB_PATH}
+          echo "BDDE_DISTRO=${{ matrix.distro }}" >> ${GITHUB_ENV}
+          echo "BDDE_EDITION=${{ matrix.edition }}" >> ${GITHUB_ENV}
+          echo "BDDE_ARCH=${{ matrix.arch }}" >> ${GITHUB_ENV}
+          echo "B2_DEFINES=BOOST_NO_STRESS_TEST=1" >> ${GITHUB_ENV}
+          echo "B2_WRAPPER=bdde" >> ${GITHUB_ENV}
+
+      - name: Setup Boost
+        env:
+          B2_ADDRESS_MODEL: ${{matrix.address-model}}
+          B2_COMPILER: ${{matrix.compiler}}
+          B2_CXXSTD: ${{matrix.cxxstd}}
+          B2_SANITIZE: ${{matrix.sanitize}}
+          B2_STDLIB: ${{matrix.stdlib}}
+        run: source ci/github/install.sh
+
+      - name: Setup coverage collection
+        if: matrix.coverage
+        run: ci/github/codecov.sh "setup"
+
+      - name: Run tests
+        if: '!matrix.coverity'
+        run: ci/build.sh
+
+      - name: Upload coverage
+        if: matrix.coverage
+        run: ci/codecov.sh "upload"
+
+      - name: Run coverity
+        if: matrix.coverity && github.event_name == 'push' && (github.ref_name == 'develop' || github.ref_name == 'master')
+        run: ci/github/coverity.sh
+        env:
+          COVERITY_SCAN_NOTIFICATION_EMAIL: ${{ secrets.COVERITY_SCAN_NOTIFICATION_EMAIL }}
+          COVERITY_SCAN_TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
+
+  windows:
+    defaults:
+      run:
+        shell: cmd
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { toolset: msvc-14.2, cxxstd: '14,17,20',       addrmd: '32,64', os: windows-2019 }
+          - { name: Collect coverage, coverage: yes,
+              toolset: msvc-14.3, cxxstd: '14,17,20',       addrmd: '32,64', os: windows-2022 }
+          - { toolset: gcc,       cxxstd: '03,11,14,17,2a', addrmd: '64',    os: windows-2019 }
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Fetch Boost.CI
+        uses: actions/checkout@v2
+        with:
+          repository: boostorg/boost-ci
+          ref: master
+          path: boost-ci-cloned
+      - name: Get CI scripts folder
+        run: |
+            REM Copy ci folder if not testing Boost.CI
+            if "%GITHUB_REPOSITORY%" == "%GITHUB_REPOSITORY:boost-ci=%" xcopy /s /e /q /i /y boost-ci-cloned\ci .\ci
+            rmdir /s /q boost-ci-cloned
+
+      - name: Setup Boost
+        run: ci\github\install.bat
+
+      - name: Run tests
+        if: '!matrix.coverage'
+        run: ci\build.bat
+        env:
+          B2_TOOLSET: ${{matrix.toolset}}
+          B2_CXXSTD: ${{matrix.cxxstd}}
+          B2_ADDRESS_MODEL: ${{matrix.addrmd}}
+
+      - name: Collect coverage
+        shell: powershell
+        if: matrix.coverage
+        run: ci\opencppcoverage.ps1
+        env:
+          B2_TOOLSET: ${{matrix.toolset}}
+          B2_CXXSTD: ${{matrix.cxxstd}}
+          B2_ADDRESS_MODEL: ${{matrix.addrmd}}
+
+      - name: Upload coverage
+        if: matrix.coverage
+        uses: codecov/codecov-action@v2
+        with:
+          files: __out/cobertura.xml
+
+  CMake:
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { os: ubuntu-20.04, build_shared: ON,  build_type: Release, generator: 'Unix Makefiles' }
+          - { os: ubuntu-20.04, build_shared: OFF, build_type: Debug, generator: 'Unix Makefiles' }
+          - { os: windows-2019, build_shared: ON,  build_type: Release, generator: 'Visual Studio 16 2019' }
+          - { os: windows-2019, build_shared: OFF, build_type: Debug, generator: 'Visual Studio 16 2019' }
+
+    timeout-minutes: 120
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Fetch Boost.CI
+        uses: actions/checkout@v2
+        with:
+          repository: boostorg/boost-ci
+          ref: master
+          path: boost-ci-cloned
+
+      - name: Get CI scripts folder
+        run: |
+            # Copy ci folder if not testing Boost.CI
+            [[ "$GITHUB_REPOSITORY" =~ "boost-ci" ]] || cp -r boost-ci-cloned/ci .
+            rm -rf boost-ci-cloned
+
+      - name: Setup Boost
+        env: {B2_DONT_BOOTSTRAP: 1}
+        run: source ci/github/install.sh
+
+      - name: Run CMake
+        run: |
+            cd "$BOOST_ROOT"
+            mkdir __build_cmake_test__ && cd __build_cmake_test__
+            cmake -G "${{matrix.generator}}" -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBOOST_INCLUDE_LIBRARIES=$SELF -DBUILD_SHARED_LIBS=${{matrix.build_shared}} -DBUILD_TESTING=ON -DBoost_VERBOSE=ON ..
+            cmake --build . --config ${{matrix.build_type}}

.travis.yml

@@ -1,216 +0,0 @@
-# Copyright 2016 Peter Dimov
-# Copyright 2017 - 2019 James E. King III
-# 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)
-
-#
-# Generic Travis CI build script for boostorg repositories
-# See: https://github.com/boostorg/boost-ci
-#
-# Instructions for customizing this script for your library:
-#
-# 1. Customize the compilers and language levels you want in the 'jobs'.
-# 2. If you have more than include/, src/, test/, example/, examples/, or
-#    tools/ directories, modify your Travis CI project and add the environment
-#    variable DEPINST.  For example if your build uses code in "bench/" and
-#    "fog/" directories, then set DEPINST to the following:
-#        --include bench --include fog
-# 3. If you want to enable Coverity Scan, you need to provide the environment
-#    variables COVERITY_SCAN_TOKEN and COVERITY_SCAN_NOTIFICATION_EMAIL in
-#    your github settings.
-# 4. Enable pull request builds in your boostorg/<library> account.
-#
-# That's it - the scripts will do everything else for you.
-
-dist: xenial
-language: cpp
-
-env:
-  global:
-  # see: http://www.boost.org/build/doc/html/bbv2/overview/invocation.html#bbv2.overview.invocation.properties
-  # - B2_ADDRESS_MODEL=address-model=64,32
-  # - B2_LINK=link=shared,static
-  # - B2_THREADING=threading=multi,single
-    - B2_VARIANT=variant=release
-
-install:
-  - git clone https://github.com/boostorg/boost-ci.git boost-ci
-  - cp -pr boost-ci/ci boost-ci/.codecov.yml .
-  - source ci/travis/install.sh
-
-addons:
-  apt:
-    packages:
-      - binutils-gold
-      - gdb
-      - libc6-dbg
-
-branches:
-  only:
-    - master
-    - develop
-    - /bugfix\/.*/
-    - /feature\/.*/
-    - /fix\/.*/
-    - /pr\/.*/
-
-script:
-  - cd $BOOST_ROOT/libs/$SELF
-  - ci/travis/build.sh
-
-#
-# Default toolsets in Ubuntu
-#
-#       trusty xenial bionic
-#        14.04  16.04  18.04
-#       ------ ------ ------
-# clang    3.4    3.8    6.0
-#   gcc  4.8.2  5.3.1  7.3.0
-#
-
-anchors:
-  clang-38: &clang-38 { apt: { packages: [ "clang-3.8",
-                                           "libstdc++-6-dev" ], sources: [ "llvm-toolchain-xenial-3.8",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-4:  &clang-4  { apt: { packages: [ "clang-4.0",
-                                           "libstdc++-6-dev" ], sources: [ "llvm-toolchain-xenial-4.0",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-5:  &clang-5  { apt: { packages: [ "clang-5.0",
-                                           "libstdc++-7-dev" ], sources: [ "llvm-toolchain-xenial-5.0",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-6:  &clang-6  { apt: { packages: [ "clang-6.0",
-                                           "libc6-dbg",
-                                           "libc++-dev",
-                                           "libstdc++-8-dev" ], sources: [ "llvm-toolchain-xenial-6.0",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-7:  &clang-7  { apt: { packages: [ "clang-7",
-                                           "libc6-dbg",
-                                           "libc++-dev",
-                                           "libstdc++-8-dev" ], sources: [ "llvm-toolchain-xenial-7",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-8:  &clang-8  { apt: { packages: [ "clang-8",
-                                           "libc6-dbg",
-                                           "libc++-dev",
-                                           "libstdc++-8-dev" ], sources: [ "llvm-toolchain-xenial-8",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  gcc-48:   &gcc-48   { apt: { packages: [ "g++-4.8"         ]                                           } }
-  gcc-49:   &gcc-49   { apt: { packages: [ "g++-4.9"         ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-5:    &gcc-5    { apt: { packages: [ "g++-5"           ]                                           } }
-  gcc-6:    &gcc-6    { apt: { packages: [ "g++-6"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-7:    &gcc-7    { apt: { packages: [ "g++-7"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-8:    &gcc-8    { apt: { packages: [ "g++-8"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-9:    &gcc-9    { apt: { packages: [ "g++-9"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-
-jobs:
-  allow_failures:
-    - env:
-      - COPY="all the environment settings from your job"
-
-  include:
-    # libstdc++
-    - { os: "linux", dist: "trusty",  # xenial has libstdc++ from gcc 5.4.0 with newer ABI
-                     env: [ "B2_TOOLSET=gcc-4.8",     "B2_CXXSTD=03,11"    ], addons: *gcc-48    }
-    - { os: "linux", dist: "trusty",  # xenial has libstdc++ from gcc 5.4.0 with newer ABI
-                     env: [ "B2_TOOLSET=gcc-4.9",     "B2_CXXSTD=03,11"    ], addons: *gcc-49    }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-5",       "B2_CXXSTD=03,11"    ], addons: *gcc-5     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-6",       "B2_CXXSTD=11,14"    ], addons: *gcc-6     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-7",       "B2_CXXSTD=14,17"    ], addons: *gcc-7     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-8",       "B2_CXXSTD=17,2a"    ], addons: *gcc-8     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-9",       "B2_CXXSTD=17,2a"    ], addons: *gcc-9     }
-    - { os: "linux", dist: "trusty",  # xenial has libstdc++ from gcc 5.4.0 with newer ABI
-                     env: [ "B2_TOOLSET=clang-3.8",   "B2_CXXSTD=03,11"    ], addons: *clang-38  }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-4.0",   "B2_CXXSTD=11,14"    ], addons: *clang-4   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-5.0",   "B2_CXXSTD=11,14"    ], addons: *clang-5   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=14,17"    ], addons: *clang-6   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-7",     "B2_CXXSTD=17,2a"    ], addons: *clang-7   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-8",     "B2_CXXSTD=17,2a"    ], addons: *clang-8   }
-
-    # libc++
-    - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=03,11,14",
-                            "B2_CXXFLAGS=-stdlib=libc++"                   ], addons: *clang-6   }
-    - { os: "osx"  , env: [ "B2_TOOLSET=clang",       "B2_CXXSTD=03,11,17" ]                     }
-
-    # to enable Intel ICC define INTEL_ICC_SERIAL_NUMBER and the following:
-    # - { os: "linux", env: [ "B2_TOOLSET=intel-linux", "B2_CXXSTD=11,14,17" ], addons: *gcc-7,
-    #     script: cd $BOOST_ROOT/libs/$SELF && ci/travis/intelicc.sh                               }
-
-    - os: linux
-      env:
-        - COMMENT=codecov.io
-        - B2_CXXSTD=03,11
-        - B2_TOOLSET=gcc-8
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-      addons: *gcc-8
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/codecov.sh
-
-    - os: linux
-      env:
-        - COMMENT=asan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=03,11,14
-        - B2_CXXFLAGS="address-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=tsan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=03,11,14
-        - B2_CXXFLAGS="thread-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=ubsan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=03,11,14
-        - B2_CXXFLAGS="undefined-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        # https://github.com/boostorg/build/issues/451 using the gold linker to work around an issue
-        - B2_LINKFLAGS="linkflags=-fuse-ld=gold"
-        - UBSAN_OPTIONS=print_stacktrace=1
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=valgrind
-        - B2_TOOLSET=clang-6.0
-        - B2_CXXSTD=03,11,14
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        - B2_VARIANT=variant=debug
-        - B2_TESTFLAGS=testing.launcher=valgrind
-        - VALGRIND_OPTS=--error-exitcode=1
-      addons: *clang-6
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/valgrind.sh
-
-    # - os: linux
-    #   env:
-    #     - COMMENT=cppcheck
-    #   script:
-    #     - cd $BOOST_ROOT/libs/$SELF
-    #     - ci/travis/cppcheck.sh
-
-    #################### Jobs to run on pushes to master, develop ###################
-
-    # Coverity Scan
-    - os: linux
-      if: (env(COVERITY_SCAN_NOTIFICATION_EMAIL) IS present) AND (branch IN (develop, master)) AND (type IN (cron, push))
-      env:
-        - COMMENT="Coverity Scan"
-        - B2_TOOLSET=clang
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/coverity.sh
-
-notifications:
-  email:
-    false

CMakeLists.txt

@@ -1,12 +1,11 @@
-# Copyright 2019 Sam Day
+# Generated by `boostdep --cmake dynamic_bitset`
+# Copyright 2020 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
-#
-# NOTE: CMake support for Boost.dynamic_bitset is currently experimental at best
-#       and the interface is likely to change in the future
+# https://www.boost.org/LICENSE_1_0.txt
 
-cmake_minimum_required(VERSION 3.5)
-project(BoostDynamicBitset LANGUAGES CXX)
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(boost_dynamic_bitset VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 
 add_library(boost_dynamic_bitset INTERFACE)
 add_library(Boost::dynamic_bitset ALIAS boost_dynamic_bitset)
@@ -14,12 +13,20 @@ add_library(Boost::dynamic_bitset ALIAS boost_dynamic_bitset)
 target_include_directories(boost_dynamic_bitset INTERFACE include)
 
 target_link_libraries(boost_dynamic_bitset
-        INTERFACE
-        Boost::assert
-        Boost::config
-        Boost::core
-        Boost::integer
-        Boost::move
-        Boost::static_assert
-        Boost::throw_exception
-        )
+  INTERFACE
+    Boost::assert
+    Boost::config
+    Boost::container_hash
+    Boost::core
+    Boost::integer
+    Boost::move
+    Boost::static_assert
+    Boost::throw_exception
+)
+
+if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
+
+  add_subdirectory(test)
+
+endif()
+

README.md

@@ -11,10 +11,10 @@ Distributed under the [Boost Software License, Version 1.0](http://www.boost.org
 
 ### Build Status
 
-Branch          | Travis | Appveyor | Coverity Scan | codecov.io | Deps | Docs | Tests |
+Branch          | GHA CI | Appveyor | Coverity Scan | codecov.io | Deps | Docs | Tests |
 :-------------: | ------ | -------- | ------------- | ---------- | ---- | ---- | ----- |
-[`master`](https://github.com/boostorg/dynamic_bitset/tree/master) | [![Build Status](https://travis-ci.org/boostorg/dynamic_bitset.svg?branch=master)](https://travis-ci.org/boostorg/dynamic_bitset) | [![Build status](https://ci.appveyor.com/api/projects/status/keyn57y5d3sl1gw5/branch/master?svg=true)](https://ci.appveyor.com/project/jeking3/dynamic_bitset-jv17p/branch/master) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/16167/badge.svg)](https://scan.coverity.com/projects/boostorg-dynamic_bitset) | [![codecov](https://codecov.io/gh/boostorg/dynamic_bitset/branch/master/graph/badge.svg)](https://codecov.io/gh/boostorg/dynamic_bitset/branch/master)| [![Deps](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/dynamic_bitset.html) | [![Documentation](https://img.shields.io/badge/docs-master-brightgreen.svg)](http://www.boost.org/doc/libs/master/doc/html/dynamic_bitset.html) | [![Enter the Matrix](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/dynamic_bitset.html)
-[`develop`](https://github.com/boostorg/dynamic_bitset/tree/develop) | [![Build Status](https://travis-ci.org/boostorg/dynamic_bitset.svg?branch=develop)](https://travis-ci.org/boostorg/dynamic_bitset) | [![Build status](https://ci.appveyor.com/api/projects/status/keyn57y5d3sl1gw5/branch/develop?svg=true)](https://ci.appveyor.com/project/jeking3/dynamic_bitset-jv17p/branch/develop) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/16167/badge.svg)](https://scan.coverity.com/projects/boostorg-dynamic_bitset) | [![codecov](https://codecov.io/gh/boostorg/dynamic_bitset/branch/develop/graph/badge.svg)](https://codecov.io/gh/boostorg/dynamic_bitset/branch/develop) | [![Deps](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/dynamic_bitset.html) | [![Documentation](https://img.shields.io/badge/docs-develop-brightgreen.svg)](http://www.boost.org/doc/libs/develop/doc/html/dynamic_bitset.html) | [![Enter the Matrix](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/dynamic_bitset.html)
+[`master`](https://github.com/boostorg/dynamic_bitset/tree/master) | [![Build Status](https://github.com/boostorg/dynamic_bitset/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/dynamic_bitset/actions?query=branch:master) | [![Build status](https://ci.appveyor.com/api/projects/status/keyn57y5d3sl1gw5/branch/master?svg=true)](https://ci.appveyor.com/project/jeking3/dynamic_bitset-jv17p/branch/master) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/16167/badge.svg)](https://scan.coverity.com/projects/boostorg-dynamic_bitset) | [![codecov](https://codecov.io/gh/boostorg/dynamic_bitset/branch/master/graph/badge.svg)](https://codecov.io/gh/boostorg/dynamic_bitset/branch/master)| [![Deps](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/dynamic_bitset.html) | [![Documentation](https://img.shields.io/badge/docs-master-brightgreen.svg)](http://www.boost.org/doc/libs/master/doc/html/dynamic_bitset.html) | [![Enter the Matrix](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/dynamic_bitset.html)
+[`develop`](https://github.com/boostorg/dynamic_bitset/tree/develop) | [![Build Status](https://github.com/boostorg/dynamic_bitset/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/dynamic_bitset/actions?query=branch:develop) | [![Build status](https://ci.appveyor.com/api/projects/status/keyn57y5d3sl1gw5/branch/develop?svg=true)](https://ci.appveyor.com/project/jeking3/dynamic_bitset-jv17p/branch/develop) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/16167/badge.svg)](https://scan.coverity.com/projects/boostorg-dynamic_bitset) | [![codecov](https://codecov.io/gh/boostorg/dynamic_bitset/branch/develop/graph/badge.svg)](https://codecov.io/gh/boostorg/dynamic_bitset/branch/develop) | [![Deps](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/dynamic_bitset.html) | [![Documentation](https://img.shields.io/badge/docs-develop-brightgreen.svg)](http://www.boost.org/doc/libs/develop/doc/html/dynamic_bitset.html) | [![Enter the Matrix](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/dynamic_bitset.html)
 
 ### Directories
 

appveyor.yml

@@ -1,147 +0,0 @@
-# Copyright 2016, 2017 Peter Dimov
-# Copyright (C) 2017 - 2019 James E. King III
-# 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)
-
-#
-# Generic Appveyor build script for boostorg repositories
-# See: https://github.com/boostorg/boost-ci/
-#
-# Instructions for customizing this script for your library:
-#
-# 1. Customize the compilers and language levels you want.
-# 2. If you have more than include/, src/, test/, example/, examples/,
-#    benchmark/ or tools/ directories, set the environment variable DEPINST.
-#    For example if your build uses code in "bench/" and "fog/" directories:
-#      - DEPINST: --include bench --include fog
-# 3. Enable pull request builds in your boostorg/<library> account.
-#
-# That's it - the script will do everything else for you.
-#
-
-version: 1.0.{build}-{branch}
-
-shallow_clone: true
-
-branches:
-  only:
-    - master
-    - develop
-    - /bugfix\/.*/
-    - /feature\/.*/
-    - /fix\/.*/
-    - /pr\/.*/
-
-matrix:
-  # Adding MAYFAIL to any matrix job allows it to fail but the build stays green:
-  allow_failures:
-    - MAYFAIL: true
-
-environment:
-  global:
-    # see: http://www.boost.org/build/doc/html/bbv2/overview/invocation.html#bbv2.overview.invocation.properties
-    # to use the default for a given environment, comment it out; recommend you build debug and release however:
-    # on Windows it is important to exercise all the possibilities, especially shared vs static, however most
-    # libraries that care about this exercise it in their Jamfiles...
-    # B2_ADDRESS_MODEL: address-model=64,32
-    # B2_LINK: link=shared,static
-    # B2_THREADING: threading=multi,single
-    B2_VARIANT: variant=release
-
-  matrix:
-    - FLAVOR: Visual Studio 2019
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXFLAGS: cxxflags=-permissive-
-      B2_CXXSTD: latest # 2a
-      B2_TOOLSET: msvc-14.2
-
-    - FLAVOR: Visual Studio 2017 C++2a Strict
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXFLAGS: cxxflags=-permissive-
-      B2_CXXSTD: latest # 2a
-      B2_TOOLSET: msvc-14.1
-
-    - FLAVOR: Visual Studio 2017 C++17
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 17
-      B2_TOOLSET: msvc-14.1
-      B2_VARIANT: variant=debug
-
-    - FLAVOR: Visual Studio 2017 C++14 (Default)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64,32
-      B2_TOOLSET: msvc-14.1
-
-    - FLAVOR: clang-cl
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 11
-      B2_TOOLSET: clang-win
-
-    - FLAVOR: Visual Studio 2015 C++14 (Default)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      B2_ADDRESS_MODEL: address-model=64,32
-      B2_TOOLSET: msvc-14.0
-      B2_VARIANT: variant=debug
-
-    - FLAVOR: Visual Studio 2010, 2012, 2013
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      B2_TOOLSET: msvc-10.0,msvc-11.0,msvc-12.0
-
-    - FLAVOR: cygwin (32-bit)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ADDPATH: C:\cygwin\bin;
-      B2_ADDRESS_MODEL: address-model=32
-      B2_CXXSTD: 03,11
-      # https://github.com/boostorg/test/issues/144
-      B2_DEFINES: define=_POSIX_C_SOURCE=200112L
-      B2_THREADING: threadapi=pthread
-      B2_TOOLSET: gcc
-      B2_VARIANT: variant=debug
-
-    - FLAVOR: cygwin (64-bit)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ADDPATH: C:\cygwin64\bin;
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 11,17
-      # https://github.com/boostorg/test/issues/144
-      B2_DEFINES: define=_POSIX_C_SOURCE=200112L define=__USE_ISOC99
-      B2_THREADING: threadapi=pthread
-      B2_TOOLSET: gcc
-
-    - FLAVOR: mingw32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ARCH: i686
-      B2_ADDRESS_MODEL: address-model=32
-      B2_CXXSTD: 03,11
-      SCRIPT: ci\appveyor\mingw.bat
-      B2_VARIANT: variant=debug
-
-    - FLAVOR: mingw64
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ARCH: x86_64
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 11,17
-      B2_DEFINES: define=__USE_ISOC99
-      SCRIPT: ci\appveyor\mingw.bat
-
-install:
-  - set SELF=%APPVEYOR_PROJECT_NAME:-=_%
-  - git clone https://github.com/boostorg/boost-ci.git C:\boost-ci
-  - xcopy /s /e /q /i C:\boost-ci\ci .\ci
-  - ci\appveyor\install.bat
-
-build: off
-
-test_script:
-  - set SELF=%APPVEYOR_PROJECT_NAME:-=_%
-  - PATH=%ADDPATH%%PATH%
-  # The definition of B2_TOOLCXX omits B2_CXXSTD= if it was not defined above
-  - IF NOT DEFINED B2_CXXSTD (SET B2_TOOLCXX=toolset=%B2_TOOLSET%) ELSE (SET B2_TOOLCXX=toolset=%B2_TOOLSET% cxxstd=%B2_CXXSTD%)
-  # Echo the complete build command to the build log
-  - IF NOT DEFINED SCRIPT                         (ECHO b2 libs/%SELF:\=/% %B2_TOOLCXX% %B2_CXXFLAGS% %B2_DEFINES% %B2_THREADING% %B2_ADDRESS_MODEL% %B2_LINK% %B2_THREADING% %B2_VARIANT% -j3)
-  # Now go build...
-  - IF DEFINED SCRIPT (call libs\%SELF%\%SCRIPT%) ELSE (b2 libs/%SELF:\=/% %B2_TOOLCXX% %B2_CXXFLAGS% %B2_DEFINES% %B2_THREADING% %B2_ADDRESS_MODEL% %B2_LINK% %B2_THREADING% %B2_VARIANT% -j3)

dynamic_bitset.html

@@ -210,6 +210,8 @@ public:
     dynamic_bitset&amp; <a href="#flip3">flip</a>(size_type n, size_type len);
     dynamic_bitset&amp; <a href="#flip2">flip</a>(size_type n);
     dynamic_bitset&amp; <a href="#flip1">flip</a>();
+    reference <a href="#at">at</a>(size_type n);
+    bool <a href="#const-at">at</a>(size_type n) const;
     bool <a href="#test">test</a>(size_type n) const;
     bool <a href="#test">test_set</a>(size_type n, bool val = true);
     bool <a href="#all">all</a>() const;
@@ -1250,6 +1252,24 @@ bool <a id="none">none</a>() const
 returns <tt>false</tt>.<br />
 <b>Throws:</b> nothing.
 
+<hr />
+<pre>
+reference <a id="at">at</a>(size_type n)
+</pre>
+
+<b>Precondition:</b> <tt>n &lt; this-&gt;size()</tt>.<br />
+<b>Returns:</b> The same as <tt>operator[](n)</tt>.<br />
+<b>Throws:</b> <tt>std::out_of_range</tt> if that <tt>n</tt> is not within the range of the bitset.
+
+<hr />
+<pre>
+bool <a id="const-at">at</a>(size_type n) const
+</pre>
+
+<b>Precondition:</b> <tt>n &lt; this-&gt;size()</tt>.<br />
+<b>Returns:</b> The same as <tt>operator[](n)</tt>.<br />
+<b>Throws:</b> <tt>std::out_of_range</tt> if that <tt>n</tt> is not within the range of the bitset.
+
 <hr />
 <pre>
 bool <a id="test">test</a>(size_type n) const

include/boost/dynamic_bitset/dynamic_bitset.hpp

@@ -293,6 +293,8 @@ public:
     dynamic_bitset& flip(size_type n, size_type len);
     dynamic_bitset& flip(size_type n);
     dynamic_bitset& flip();
+    reference at(size_type n);
+    bool at(size_type n) const;
     bool test(size_type n) const;
     bool test_set(size_type n, bool val = true);
     bool all() const;
@@ -1114,6 +1116,25 @@ bool dynamic_bitset<Block, Allocator>::m_unchecked_test(size_type pos) const
     return (m_bits[block_index(pos)] & bit_mask(pos)) != 0;
 }
 
+template <typename Block, typename Allocator>
+typename dynamic_bitset<Block, Allocator>::reference
+dynamic_bitset<Block, Allocator>::at(size_type pos)
+{
+    if (pos >= m_num_bits)
+        BOOST_THROW_EXCEPTION(std::out_of_range("boost::dynamic_bitset::at out_of_range"));
+
+    return (*this)[pos];
+}
+
+template <typename Block, typename Allocator>
+bool dynamic_bitset<Block, Allocator>::at(size_type pos) const
+{
+    if (pos >= m_num_bits)
+        BOOST_THROW_EXCEPTION(std::out_of_range("boost::dynamic_bitset::at out_of_range"));
+
+    return (*this)[pos];
+}
+
 template <typename Block, typename Allocator>
 bool dynamic_bitset<Block, Allocator>::test(size_type pos) const
 {

meta/libraries.json

@@ -12,5 +12,6 @@
     ],
     "maintainers": [
         "Jeremy Siek <jeremy.siek -at- gmail.com>"
-    ]
+    ],
+    "cxxstd": "03"
 }

test/bitset_test.hpp

@@ -1158,6 +1158,94 @@ struct bitset_test {
     BOOST_TEST((lhs >> pos) == (x >>= pos));
   }
 
+  static void at(const Bitset& lhs, const std::vector<bool>& bit_vec)
+  {
+      Bitset b(lhs);
+      std::size_t i, j, k;
+
+      // x = b.at(i)
+      // x = ~b.at(i)
+      for (i = 0; i < b.size(); ++i)
+      {
+          bool x = b.at(i);
+          BOOST_TEST(x == bit_vec.at(i));
+          x = ~b.at(i);
+          BOOST_TEST(x == !bit_vec.at(i));
+      }
+      Bitset prev(b);
+
+      // b.at(i) = x
+      for (j = 0; j < b.size(); ++j)
+      {
+          bool x = !prev.at(j);
+          b.at(j) = x;
+          for (k = 0; k < b.size(); ++k)
+              if (j == k)
+                  BOOST_TEST(b.at(k) == x);
+              else
+                  BOOST_TEST(b.at(k) == prev.at(k));
+          b.at(j) = prev.at(j);
+      }
+      b.flip();
+
+      // b.at(i) = b.at(j)
+      for (i = 0; i < b.size(); ++i)
+      {
+          b.at(i) = prev.at(i);
+          for (j = 0; j < b.size(); ++j)
+          {
+              if (i == j)
+                  BOOST_TEST(b.at(j) == prev.at(j));
+              else
+                  BOOST_TEST(b.at(j) == !prev.at(j));
+          }
+          b.at(i) = !prev.at(i);
+      }
+
+      // b.at(i).flip()
+      for (i = 0; i < b.size(); ++i)
+      {
+          b.at(i).flip();
+          for (j = 0; j < b.size(); ++j)
+          {
+              if (i == j)
+                  BOOST_TEST(b.at(j) == prev.at(j));
+              else
+                  BOOST_TEST(b.at(j) == !prev.at(j));
+          }
+          b.at(i).flip();
+      }
+
+      // b.at(b.size())
+      bool will_out_of_range = false;
+      for (i = 0; i <= b.size(); ++i)
+      {
+          if (i == b.size())
+          {
+              will_out_of_range = true;
+              break;
+          }
+          b.at(i);
+      }
+      if (will_out_of_range)
+      {
+          try
+          {
+              b.at(b.size());
+              BOOST_TEST(false); // It should have thrown an exception
+          }
+          catch (const std::out_of_range& ex)
+          {
+              // Good!
+              BOOST_TEST(!!ex.what());
+          }
+          catch (...)
+          {
+              BOOST_TEST(false); // threw the wrong exception
+          }
+      }
+  }
+
   // operator|
   static
   void operator_or(const Bitset& lhs, const Bitset& rhs)

test/dyn_bitset_unit_tests1.cpp

@@ -509,6 +509,26 @@ void run_test_cases( BOOST_EXPLICIT_TEMPLATE_TYPE(Block) )
       bit_vec[i] = long_string[n - 1 - i] == '0' ? 0 : 1;
     Tests::operator_bracket(b, bit_vec);
   }
+  //=====================================================================
+  // Test at
+  {
+      boost::dynamic_bitset<Block> b1;
+      std::vector<bool> bitvec1;
+      Tests::at(b1, bitvec1);
+  }
+  {
+      boost::dynamic_bitset<Block> b(std::string("1"));
+      std::vector<bool> bit_vec(1, true);
+      Tests::at(b, bit_vec);
+  }
+  {
+      boost::dynamic_bitset<Block> b(long_string);
+      std::size_t n = long_string.size();
+      std::vector<bool> bit_vec(n);
+      for (std::size_t i = 0; i < n; ++i)
+          bit_vec[i] = long_string[n - 1 - i] == '0' ? 0 : 1;
+      Tests::at(b, bit_vec);
+  }
 #if !defined(BOOST_NO_CXX11_ALLOCATOR)
   {
      typedef boost::dynamic_bitset<Block,