simplify push_back logic

Update CI to 2024.12 spec, update README
Support stateful allocators
2026-01-22 05:12:13 +00:00 · 2024-12-28 16:25:41 -05:00 · 2024-12-28 21:25:17 +00:00 · 2024-12-24 09:29:42 -05:00 · 2024-11-30 19:43:12 +00:00 · 2024-11-26 13:59:18 -05:00
20 changed files with 801 additions and 1057 deletions
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -0,0 +1,97 @@
+# 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\/.*/
+
+skip_commits:
+  files:
+    - LICENSE
+    - meta/*
+    - README.md
+
+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: cygwin (32-bit)
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      ADDPATH: C:\cygwin\bin;
+      B2_ADDRESS_MODEL: 32
+      B2_CXXSTD: 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: 11,14,1z
+      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
+
--- a/.codecov.yml
+++ b/.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/
--- a/.drone.star
+++ b/.drone.star
@@ -1,41 +0,0 @@
-# Use, modification, and distribution are
-# subject to the Boost Software License, Version 1.0. (See accompanying
-# file LICENSE.txt)
-#
-# Copyright Rene Rivera 2020.
-
-# For Drone CI we use the Starlark scripting language to reduce duplication.
-# As the yaml syntax for Drone CI is rather limited.
-#
-#
-globalenv={'B2_VARIANT': 'variant=release'}
-linuxglobalimage="cppalliance/droneubuntu1604:1"
-windowsglobalimage="cppalliance/dronevs2019"
-
-def main(ctx):
-  return [
-  linux_cxx("B2_TOOLSET=gcc-4.8 B2_CXXSTD=03,11 Job 0", "g++-4.8", packages="g++-4.8", buildtype="boost", buildscript="drone", image="cppalliance/droneubuntu1404:1", environment={'B2_TOOLSET': 'gcc-4.8', 'B2_CXXSTD': '03,11', 'DRONE_JOB_UUID': 'b6589fc6ab'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=gcc-4.9 B2_CXXSTD=03,11 Job 1", "g++-4.9", packages="g++-4.9", buildtype="boost", buildscript="drone", image="cppalliance/droneubuntu1404:1", environment={'B2_TOOLSET': 'gcc-4.9', 'B2_CXXSTD': '03,11', 'DRONE_JOB_UUID': '356a192b79'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=gcc-5 B2_CXXSTD=03,11 Job 2", "g++-5", packages="g++-5", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-5', 'B2_CXXSTD': '03,11', 'DRONE_JOB_UUID': 'da4b9237ba'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=gcc-6 B2_CXXSTD=11,14 Job 3", "g++-6", packages="g++-6", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-6', 'B2_CXXSTD': '11,14', 'DRONE_JOB_UUID': '77de68daec'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=gcc-7 B2_CXXSTD=14,17 Job 4", "g++-7", packages="g++-7", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-7', 'B2_CXXSTD': '14,17', 'DRONE_JOB_UUID': '1b64538924'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=gcc-8 B2_CXXSTD=17,2a Job 5", "g++-8", packages="g++-8", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-8', 'B2_CXXSTD': '17,2a', 'DRONE_JOB_UUID': 'ac3478d69a'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=gcc-9 B2_CXXSTD=17,2a Job 6", "g++-9", packages="g++-9", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-9', 'B2_CXXSTD': '17,2a', 'DRONE_JOB_UUID': 'c1dfd96eea'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=clang-3.8 B2_CXXSTD=03,11 Job 7", "clang++-3.8", packages="clang-3.8 libstdc++-6-dev", llvm_os="xenial", llvm_ver="3.8", buildtype="boost", buildscript="drone", image="cppalliance/droneubuntu1404:1", environment={'B2_TOOLSET': 'clang-3.8', 'B2_CXXSTD': '03,11', 'DRONE_JOB_UUID': '902ba3cda1'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=clang-4.0 B2_CXXSTD=11,14 Job 8", "clang++-4.0", packages="clang-4.0 libstdc++-6-dev", llvm_os="xenial", llvm_ver="4.0", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'clang-4.0', 'B2_CXXSTD': '11,14', 'DRONE_JOB_UUID': 'fe5dbbcea5'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=clang-5.0 B2_CXXSTD=11,14 Job 9", "clang++-5.0", packages="clang-5.0 libstdc++-7-dev", llvm_os="xenial", llvm_ver="5.0", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'clang-5.0', 'B2_CXXSTD': '11,14', 'DRONE_JOB_UUID': '0ade7c2cf9'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=clang-6.0 B2_CXXSTD=14,17 Job 10", "clang++-6.0", packages="clang-6.0 libc6-dbg libc++-dev libstdc++-8-dev", llvm_os="xenial", llvm_ver="6.0", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'clang-6.0', 'B2_CXXSTD': '14,17', 'DRONE_JOB_UUID': 'b1d5781111'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=clang-7 B2_CXXSTD=17,2a Job 11", "clang++-7", packages="clang-7 libc6-dbg libc++-dev libstdc++-8-dev", llvm_os="xenial", llvm_ver="7", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'clang-7', 'B2_CXXSTD': '17,2a', 'DRONE_JOB_UUID': '17ba079149'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=clang-8 B2_CXXSTD=17,2a Job 12", "clang++-8", packages="clang-8 libc6-dbg libc++-dev libstdc++-8-dev", llvm_os="xenial", llvm_ver="8", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'clang-8', 'B2_CXXSTD': '17,2a', 'DRONE_JOB_UUID': '7b52009b64'}, globalenv=globalenv),
-  linux_cxx("B2_TOOLSET=clang-6.0 B2_CXXSTD=03,11,14 Job 13", "clang++-6.0", packages="clang-6.0 libc6-dbg libc++-dev libstdc++-8-dev", llvm_os="xenial", llvm_ver="6.0", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'clang-6.0', 'B2_CXXSTD': '03,11,14', 'B2_CXXFLAGS': '-stdlib=libc++', 'DRONE_JOB_UUID': 'bd307a3ec3'}, globalenv=globalenv),
-  osx_cxx("B2_TOOLSET=clang B2_CXXSTD=03,11,17 Job 14", "g++", packages="", buildtype="boost", buildscript="drone", environment={'B2_TOOLSET': 'clang', 'B2_CXXSTD': '03,11,17', 'DRONE_JOB_UUID': 'fa35e19212'}, globalenv=globalenv),
-  linux_cxx("COMMENT=codecov.io B2_CXXSTD=03,11 B2_TOOLSET Job 15", "g++-8", packages="g++-8", buildtype="b5847f804b-0fcaf592f9", buildscript="drone", image=linuxglobalimage, environment={'COMMENT': 'codecov.io', 'B2_CXXSTD': '03,11', 'B2_TOOLSET': 'gcc-8', 'B2_DEFINES': 'define=BOOST_NO_STRESS_TEST=1', 'DRONE_JOB_UUID': 'f1abd67035'}, globalenv=globalenv),
-  linux_cxx("COMMENT=asan B2_VARIANT=variant=debug B2_TOOL Job 16", "g++-8", packages="g++-8", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'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', 'DRONE_EXTRA_PRIVILEGED': 'True', 'DRONE_JOB_UUID': '1574bddb75'}, globalenv=globalenv, privileged=True),
-  linux_cxx("COMMENT=tsan B2_VARIANT=variant=debug B2_TOOL Job 17", "g++-8", packages="g++-8", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'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', 'DRONE_JOB_UUID': '0716d9708d'}, globalenv=globalenv),
-  linux_cxx("COMMENT=ubsan B2_VARIANT=variant=debug B2_TOO Job 18", "g++-8", packages="g++-8", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'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', 'B2_LINKFLAGS': 'linkflags=-fuse-ld=gold', 'UBSAN_OPTIONS': 'print_stacktrace=1', 'DRONE_JOB_UUID': '9e6a55b6b4'}, globalenv=globalenv),
-  linux_cxx("COMMENT=valgrind B2_TOOLSET=clang-6.0 B2_CXXS Job 19", "clang++-6.0", packages="clang-6.0 libc6-dbg libc++-dev libstdc++-8-dev", llvm_os="xenial", llvm_ver="6.0", buildtype="b5847f804b-db180b7bd2", buildscript="drone", image=linuxglobalimage, environment={'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', 'DRONE_JOB_UUID': 'b3f0c7f6bb'}, globalenv=globalenv),
-  linux_cxx("COMMENT=Coverity Scan B2_TOOLSET=clang Job 20", "g++", packages="binutils-gold gdb libc6-dbg", buildtype="b5847f804b-cce9827eb5", buildscript="drone", image=linuxglobalimage, environment={'COMMENT': 'Coverity Scan', 'B2_TOOLSET': 'clang', 'DRONE_JOB_UUID': '91032ad7bb'}, globalenv=globalenv),
-    ]
-
-# from https://github.com/boostorg/boost-ci
-load("@boost_ci//ci/drone/:functions.star", "linux_cxx","windows_cxx","osx_cxx","freebsd_cxx")
--- a/.drone/drone.sh
+++ b/.drone/drone.sh
@@ -1,106 +0,0 @@
-#!/bin/bash
-
-# Copyright 2020 Rene Rivera, Sam Darwin
-# Distributed under the Boost Software License, Version 1.0.
-# (See accompanying file LICENSE.txt or copy at http://boost.org/LICENSE_1_0.txt)
-
-set -e
-export TRAVIS_BUILD_DIR=$(pwd)
-export DRONE_BUILD_DIR=$(pwd)
-export TRAVIS_BRANCH=$DRONE_BRANCH
-export VCS_COMMIT_ID=$DRONE_COMMIT
-export GIT_COMMIT=$DRONE_COMMIT
-export REPO_NAME=$DRONE_REPO
-export PATH=~/.local/bin:/usr/local/bin:$PATH
-
-if [ "$DRONE_JOB_BUILDTYPE" == "boost" ]; then
-
-echo '==================================> INSTALL'
-
-git clone https://github.com/boostorg/boost-ci.git boost-ci
-cp -pr boost-ci/ci boost-ci/.codecov.yml .
-
-if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-    unset -f cd
-fi
-
-export SELF=`basename $REPO_NAME`
-export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-export BOOST_CI_SRC_FOLDER=$(pwd)
-
-. ./ci/common_install.sh
-
-echo '==================================> SCRIPT'
-
-cd $BOOST_ROOT/libs/$SELF
-ci/travis/build.sh
-
-elif [ "$DRONE_JOB_BUILDTYPE" == "b5847f804b-0fcaf592f9" ]; then
-
-echo '==================================> INSTALL'
-
-git clone https://github.com/boostorg/boost-ci.git boost-ci
-cp -pr boost-ci/ci boost-ci/.codecov.yml .
-
-if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-    unset -f cd
-fi
-
-export SELF=`basename $REPO_NAME`
-export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-export BOOST_CI_SRC_FOLDER=$(pwd)
-
-. ./ci/common_install.sh
-
-echo '==================================> SCRIPT'
-
-cd $BOOST_ROOT/libs/$SELF
-ci/travis/codecov.sh
-
-elif [ "$DRONE_JOB_BUILDTYPE" == "b5847f804b-db180b7bd2" ]; then
-
-echo '==================================> INSTALL'
-
-git clone https://github.com/boostorg/boost-ci.git boost-ci
-cp -pr boost-ci/ci boost-ci/.codecov.yml .
-
-if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-    unset -f cd
-fi
-
-export SELF=`basename $REPO_NAME`
-export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-export BOOST_CI_SRC_FOLDER=$(pwd)
-
-. ./ci/common_install.sh
-
-echo '==================================> SCRIPT'
-
-cd $BOOST_ROOT/libs/$SELF
-ci/travis/valgrind.sh
-
-elif [ "$DRONE_JOB_BUILDTYPE" == "b5847f804b-cce9827eb5" ]; then
-
-echo '==================================> INSTALL'
-
-git clone https://github.com/boostorg/boost-ci.git boost-ci
-cp -pr boost-ci/ci boost-ci/.codecov.yml .
-
-if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-    unset -f cd
-fi
-
-export SELF=`basename $REPO_NAME`
-export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-export BOOST_CI_SRC_FOLDER=$(pwd)
-
-. ./ci/common_install.sh
-
-echo '==================================> SCRIPT'
-
-if  [ -n "${COVERITY_SCAN_NOTIFICATION_EMAIL}" -a \( "$DRONE_BRANCH" = "develop" -o "$DRONE_BRANCH" = "master" \) -a "$DRONE_BUILD_EVENT" = "push" ] ; then
-cd $BOOST_ROOT/libs/$SELF
-ci/travis/coverity.sh
-fi
-
-fi
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,4 +1,12 @@
-name: GitHub Actions CI
+# Copyright 2020-2021 Peter Dimov
+# Copyright 2021 Andrey Semashev
+# Copyright 2021 Alexander Grund
+# Copyright 2022-2024 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:
@@ -6,520 +14,416 @@ on:
    branches:
      - master
      - develop
-      - githubactions*
+      - bugfix/**
      - feature/**
      - fix/**
      - pr/**
+    paths-ignore:
+      - LICENSE
+      - meta/**
+      - README.md
+
+concurrency:
+  group: ${{format('{0}:{1}', github.repository, github.ref)}}
+  cancel-in-progress: true

 env:
-    B2_VARIANT: variant=release
+  GIT_FETCH_JOBS: 8
+  NET_RETRY_COUNT: 5
+  B2_CI_VERSION: 1
+  B2_VARIANT: debug,release
+  B2_LINK: shared,static
+  LCOV_BRANCH_COVERAGE: 0

 jobs:
  posix:
+    defaults:
+      run:
+        shell: bash
+
    strategy:
      fail-fast: false
      matrix:
        include:
-          - name: "B2_TOOLSET=gcc-4.8 B2_CXXSTD=03,11 Job 0"
-            buildtype: "boost"
-            packages: "g++-4.8"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            container: "ubuntu:14.04"
-            cxx: "g++-4.8"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            b2_toolset: "gcc-4.8"
-            b2_cxxstd: "03,11"
-          - name: "B2_TOOLSET=gcc-4.9 B2_CXXSTD=03,11 Job 1"
-            buildtype: "boost"
-            packages: "g++-4.9"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-4.9"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            b2_toolset: "gcc-4.9"
-            b2_cxxstd: "03,11"
-          - name: "B2_TOOLSET=gcc-5 B2_CXXSTD=03,11 Job 2"
-            buildtype: "boost"
-            packages: "g++-5"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-5"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            b2_toolset: "gcc-5"
-            b2_cxxstd: "03,11"
-          - name: "B2_TOOLSET=gcc-6 B2_CXXSTD=11,14 Job 3"
-            buildtype: "boost"
-            packages: "g++-6"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-6"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            b2_toolset: "gcc-6"
-            b2_cxxstd: "11,14"
-          - name: "B2_TOOLSET=gcc-7 B2_CXXSTD=14,17 Job 4"
-            buildtype: "boost"
-            packages: "g++-7"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-7"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            b2_toolset: "gcc-7"
-            b2_cxxstd: "14,17"
-          - name: "B2_TOOLSET=gcc-8 B2_CXXSTD=17,2a Job 5"
-            buildtype: "boost"
-            packages: "g++-8"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-8"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            b2_toolset: "gcc-8"
-            b2_cxxstd: "17,2a"
-          - name: "B2_TOOLSET=gcc-9 B2_CXXSTD=17,2a Job 6"
-            buildtype: "boost"
-            packages: "g++-9"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-9"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            b2_toolset: "gcc-9"
-            b2_cxxstd: "17,2a"
-          - name: "B2_TOOLSET=clang-3.8 B2_CXXSTD=03,11 Job 7"
-            buildtype: "boost"
-            packages: "clang-3.8 libstdc++-6-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            container: "ubuntu:14.04"
-            cxx: "clang++-3.8"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "3.8"
-            b2_toolset: "clang-3.8"
-            b2_cxxstd: "03,11"
-          - name: "B2_TOOLSET=clang-4.0 B2_CXXSTD=11,14 Job 8"
-            buildtype: "boost"
-            packages: "clang-4.0 libstdc++-6-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "clang++-4.0"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "4.0"
-            b2_toolset: "clang-4.0"
-            b2_cxxstd: "11,14"
-          - name: "B2_TOOLSET=clang-5.0 B2_CXXSTD=11,14 Job 9"
-            buildtype: "boost"
-            packages: "clang-5.0 libstdc++-7-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "clang++-5.0"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "5.0"
-            b2_toolset: "clang-5.0"
-            b2_cxxstd: "11,14"
-          - name: "B2_TOOLSET=clang-6.0 B2_CXXSTD=14,17 Job 10"
-            buildtype: "boost"
-            packages: "clang-6.0 libc6-dbg libc++-dev libstdc++-8-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "clang++-6.0"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "6.0"
-            b2_toolset: "clang-6.0"
-            b2_cxxstd: "14,17"
-          - name: "B2_TOOLSET=clang-7 B2_CXXSTD=17,2a Job 11"
-            buildtype: "boost"
-            packages: "clang-7 libc6-dbg libc++-dev libstdc++-8-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "clang++-7"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "7"
-            b2_toolset: "clang-7"
-            b2_cxxstd: "17,2a"
-          - name: "B2_TOOLSET=clang-8 B2_CXXSTD=17,2a Job 12"
-            buildtype: "boost"
-            packages: "clang-8 libc6-dbg libc++-dev libstdc++-8-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "clang++-8"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "8"
-            b2_toolset: "clang-8"
-            b2_cxxstd: "17,2a"
-          - name: "B2_TOOLSET=clang-6.0 B2_CXXSTD=03,11,14 Job 13"
-            buildtype: "boost"
-            packages: "clang-6.0 libc6-dbg libc++-dev libstdc++-8-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "clang++-6.0"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "6.0"
-            b2_toolset: "clang-6.0"
-            b2_cxxstd: "03,11,14"
-            b2_cxxflags: "-stdlib=libc++"
-          - name: "COMMENT=codecov.io B2_CXXSTD=03,11 B2_TOOLSET Job 15"
-            buildtype: "b5847f804b-0fcaf592f9"
-            packages: "g++-8"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-8"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            comment: "codecov.io"
-            b2_cxxstd: "03,11"
-            b2_toolset: "gcc-8"
-            b2_defines: "define=BOOST_NO_STRESS_TEST=1"
-          - name: "COMMENT=asan B2_VARIANT=variant=debug B2_TOOL Job 16"
-            buildtype: "boost"
-            packages: "g++-8"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-8"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            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"
-          - name: "COMMENT=tsan B2_VARIANT=variant=debug B2_TOOL Job 17"
-            buildtype: "boost"
-            packages: "g++-8"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-8"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            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"
-          - name: "COMMENT=ubsan B2_VARIANT=variant=debug B2_TOO Job 18"
-            buildtype: "boost"
-            packages: "g++-8"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++-8"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            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"
-            b2_linkflags: "linkflags=-fuse-ld=gold"
-            ubsan_options: "print_stacktrace=1"
-          - name: "COMMENT=valgrind B2_TOOLSET=clang-6.0 B2_CXXS Job 19"
-            buildtype: "b5847f804b-db180b7bd2"
-            packages: "clang-6.0 libc6-dbg libc++-dev libstdc++-8-dev"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "clang++-6.0"
-            sources: ""
-            llvm_os: "xenial"
-            llvm_ver: "6.0"
-            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"
-          - name: "COMMENT=Coverity Scan B2_TOOLSET=clang Job 20"
-            buildtype: "b5847f804b-cce9827eb5"
-            packages: "binutils-gold gdb libc6-dbg"
-            packages_to_remove: ""
-            os: "ubuntu-16.04"
-            cxx: "g++"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            comment: "Coverity Scan"
-            b2_toolset: "clang"
+          # linux, gcc
+          - { compiler: gcc-7,     cxxstd: '11,14,17',       os: ubuntu-20.04 }
+          - { compiler: gcc-8,     cxxstd: '11,14,17,2a',    os: ubuntu-20.04 }
+          - { compiler: gcc-9,     cxxstd: '11,14,17,2a',    os: ubuntu-20.04 }
+          - { compiler: gcc-10,    cxxstd: '11,14,17,20',    os: ubuntu-20.04 }
+          - { compiler: gcc-11,    cxxstd: '11,14,17,20',    os: ubuntu-20.04 }
+          - { compiler: gcc-12,    cxxstd: '11,14,17,20',    os: ubuntu-22.04 }
+          - { compiler: gcc-13,    cxxstd: '11,14,17,20,2b', os: ubuntu-22.04 }
+          - { compiler: gcc-14,    cxxstd: '11,14,17,20,2b', os: ubuntu-24.04 }
+          - { name: GCC w/ sanitizers, sanitize: yes,
+              compiler: gcc-13,    cxxstd: '11,14,17,20',    os: ubuntu-22.04 }
+          - { name: Collect coverage, coverage: yes,
+              compiler: gcc-12,    cxxstd: '11',             os: ubuntu-22.04, install: 'g++-12-multilib', address-model: '32,64' }

-    runs-on: ${{ matrix.os }}
-    container: ${{ matrix.container }}
+          # linux, clang
+          - { compiler: clang-9,   cxxstd: '11,14,17,2a',    os: ubuntu-20.04 }
+          - { compiler: clang-10,  cxxstd: '11,14,17,20',    os: ubuntu-20.04 }
+          - { compiler: clang-11,  cxxstd: '11,14,17,20',    os: ubuntu-20.04 }
+          - { compiler: clang-12,  cxxstd: '11,14,17,20',    os: ubuntu-20.04 }
+          # Clang isn't compatible with libstdc++-13, so use the slightly older one
+          - { compiler: clang-13,  cxxstd: '11,14,17,20',    os: ubuntu-22.04,  install: 'clang-13 g++-12', gcc_toolchain: 12 }
+          - { compiler: clang-14,  cxxstd: '11,14,17,20',    os: ubuntu-22.04,  install: 'clang-14 g++-12', gcc_toolchain: 12 }
+          - { compiler: clang-15,  cxxstd: '11,14,17,20',    os: ubuntu-22.04,  install: 'clang-15 g++-12', gcc_toolchain: 12 }
+          - { compiler: clang-16,  cxxstd: '11,14,17,20,2b', os: ubuntu-24.04 }
+          # https://github.com/llvm/llvm-project/issues/59827: disabled 2b/23 for clang-17 with libstdc++13 in 24.04
+          - { compiler: clang-17,  cxxstd: '11,14,17,20',    os: ubuntu-24.04 }
+          - { compiler: clang-18,  cxxstd: '11,17,20,23,2c', os: ubuntu-24.04 }
+
+          # linux, libc++
+          - { name: Clang w/ sanitizers, sanitize: yes,
+              compiler: clang-12,  cxxstd: '11,14,17,20',    os: ubuntu-20.04, stdlib: 'libc++', install: 'clang-12 libc++-12-dev libc++abi-12-dev' }
+
+          - { name: MacOS w/ clang and sanitizers,
+              compiler: clang,     cxxstd: '11,14,17,20,2b', os: macos-13, sanitize: yes }
+          - { compiler: clang,     cxxstd: '11,14,17,20,2b', os: macos-14 }
+          - { compiler: clang,     cxxstd: '11,14,17,20,2b', os: macos-15 }
+
+          # 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-12,  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-22.04, ccache: no, distro: fedora, edition: 34, arch: s390x }
+
+    timeout-minutes: 120
+    runs-on: ${{matrix.os}}
+    env: {B2_USE_CCACHE: 1}

    steps:
-      - name: Check if running in container
-        if: matrix.container != ''
-        run: echo "GHA_CONTAINER=${{ matrix.container }}" >> $GITHUB_ENV
-      - name: If running in container, upgrade packages
-        if: matrix.container != ''
+      - name: Setup environment
        run: |
-            sudo apt-get -o Acquire::Retries=3 update && DEBIAN_FRONTEND=noninteractive apt-get -y install tzdata && apt-get -o Acquire::Retries=3 install -y sudo software-properties-common wget curl apt-transport-https make apt-file sudo unzip libssl-dev build-essential autotools-dev autoconf automake g++ libc++-helpers python python-pip ruby cpio gcc-multilib g++-multilib pkgconf python3 python3-pip ccache libpython-dev
-            sudo apt-add-repository ppa:git-core/ppa
-            sudo apt-get -o Acquire::Retries=3 update && apt-get -o Acquire::Retries=3 -y install git
-            sudo python -m pip install --upgrade pip==20.3.4
-            sudo /usr/local/bin/pip install cmake
+            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 curl
+                # Need (newer) git, and the older Ubuntu container may require requesting the key manually using port 80
+                curl -sSL --retry ${NET_RETRY_COUNT:-5} 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0xE1DD270288B4E6030699E45FA1715D88E1DF1F24' | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/git-core_ubuntu_ppa.gpg
+                for i in {1..${NET_RETRY_COUNT:-3}}; do sudo -E add-apt-repository -y ppa:git-core/ppa && break || sleep 10; done
+                apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+                osver=$(lsb_release -sr | cut -f1 -d.)
+                pkgs="g++ git xz-utils"
+                # Ubuntu 22+ has only Python 3 in the repos
+                if [ -n "$osver" ] && [ "$osver" -ge "22" ]; then
+                  pkgs+=" python-is-python3 libpython3-dev"
+                else
+                  pkgs+=" python libpython-dev"
+                fi
+                apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y $pkgs
+            fi
+            # For jobs not compatible with ccache, use "ccache: no" in the matrix
+            if [[ "${{ matrix.ccache }}" == "no" ]]; then
+                echo "B2_USE_CCACHE=0" >> $GITHUB_ENV
+            fi
+            git config --global pack.threads 0
+            if [[ "${{matrix.container}}" == "ubuntu:1"* ]]; then
+              # Node 20 doesn't work with Ubuntu 16/18  glibc: https://github.com/actions/checkout/issues/1590
+              curl -sL https://archives.boost.io/misc/node/node-v20.9.0-linux-x64-glibc-217.tar.xz | tar -xJ --strip-components 1 -C /node20217
+            fi

-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          # For coverage builds fetch the whole history, else only 1 commit using a 'fake ternary'
+          fetch-depth: ${{ matrix.coverage && '0' || '1' }}

-      - name: linux
-        shell: bash
+      - name: Cache ccache
+        uses: actions/cache@v4
+        if: env.B2_USE_CCACHE
+        with:
+          path: ~/.ccache
+          key: ${{matrix.os}}-${{matrix.container}}-${{matrix.compiler}}-${{github.sha}}
+          restore-keys: ${{matrix.os}}-${{matrix.container}}-${{matrix.compiler}}-
+
+      - name: Fetch Boost.CI
+        uses: actions/checkout@v4
+        with:
+          repository: boostorg/boost-ci
+          ref: master
+          path: boost-ci-cloned
+
+      - name: Get CI scripts folder
+        run: |
+            # Copy ci folder if not testing Boost.CI
+            [[ "$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
+            SOURCE_KEYS+=('http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x1E9377A2BA9EF27F')
+            SOURCES+=(ppa:ubuntu-toolchain-r/test)
+
+            ci/add-apt-keys.sh "${SOURCE_KEYS[@]}"
+            # Initial update before adding sources required to get e.g. keys
+            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+            ci/add-apt-repositories.sh "${SOURCES[@]}"
+
+            sudo apt-get -o Acquire::Retries=$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" >> $GITHUB_ENV
+            if ! command -v dpkg-architecture; then
+                apt-get install -y dpkg-dev
+            fi
+            MULTIARCH_TRIPLET="$(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
        env:
-          CXX: ${{ matrix.cxx }}
-          SOURCES: ${{ matrix.sources }}
-          LLVM_OS: ${{ matrix.llvm_os }}
-          LLVM_VER: ${{ matrix.llvm_ver }}
-          PACKAGES: ${{ matrix.packages }}
-          PACKAGES_TO_REMOVE: ${{ matrix.packages_to_remove }}
-          JOB_BUILDTYPE: ${{ matrix.buildtype }}
-          B2_TOOLSET: ${{ matrix.b2_toolset }}
-          B2_CXXSTD: ${{ matrix.b2_cxxstd }}
-          B2_CXXFLAGS: ${{ matrix.b2_cxxflags }}
-          COMMENT: ${{ matrix.comment }}
-          B2_DEFINES: ${{ matrix.b2_defines }}
-          B2_VARIANT: ${{ matrix.b2_variant }}
-          B2_LINKFLAGS: ${{ matrix.b2_linkflags }}
-          UBSAN_OPTIONS: ${{ matrix.ubsan_options }}
-          B2_TESTFLAGS: ${{ matrix.b2_testflags }}
-          VALGRIND_OPTS: ${{ matrix.valgrind_opts }}
-          TRAVIS_BRANCH: ${{ github.base_ref }}
-          TRAVIS_OS_NAME: "linux"
-        run: |
-          echo '==================================> SETUP'
-          echo '==================================> PACKAGES'
-          set -e
-          if [ -n "$PACKAGES_TO_REMOVE" ]; then sudo apt-get purge -y $PACKAGES_TO_REMOVE; fi
-          echo ">>>>> APT: REPO.."
-          for i in {1..3}; do sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test" && break || sleep 2; done
-          
-          if test -n "${LLVM_OS}" ; then
-              wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-              if test -n "${LLVM_VER}" ; then
-                  sudo -E apt-add-repository "deb http://apt.llvm.org/${LLVM_OS}/ llvm-toolchain-${LLVM_OS}-${LLVM_VER} main"
-              else
-                  # Snapshot (i.e. trunk) build of clang
-                  sudo -E apt-add-repository "deb http://apt.llvm.org/${LLVM_OS}/ llvm-toolchain-${LLVM_OS} main"
-              fi
-          fi
-          echo ">>>>> APT: UPDATE.."
-          sudo -E apt-get -o Acquire::Retries=3 update
-          if test -n "${SOURCES}" ; then
-              echo ">>>>> APT: INSTALL SOURCES.."
-              for SOURCE in $SOURCES; do
-                  sudo -E apt-add-repository ppa:$SOURCE
-              done
-          fi
-          echo ">>>>> APT: INSTALL ${PACKAGES}.."
-          sudo -E DEBIAN_FRONTEND=noninteractive apt-get -o Acquire::Retries=3 -y --no-install-suggests --no-install-recommends install ${PACKAGES}
+          BDDE_DISTRO: ${{matrix.distro}}
+          BDDE_EDITION: ${{matrix.edition}}
+          BDDE_ARCH: ${{matrix.arch}}
+        run: ci/github/setup_bdde.sh

-          echo '==================================> INSTALL AND COMPILE'
-          set -e
-          export TRAVIS_BUILD_DIR=$(pwd)
-          export TRAVIS_BRANCH=${TRAVIS_BRANCH:-$(echo $GITHUB_REF | awk 'BEGIN { FS = "/" } ; { print $3 }')}
-          export VCS_COMMIT_ID=$GITHUB_SHA
-          export GIT_COMMIT=$GITHUB_SHA
-          export REPO_NAME=$(basename $GITHUB_REPOSITORY)
-          export USER=$(whoami)
-          export CC=${CC:-gcc}
-          export PATH=~/.local/bin:/usr/local/bin:$PATH
+      - 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}}
+          # More entries can be added in the same way, see the B2_ARGS assignment in ci/enforce.sh for the possible keys.
+          # B2_DEFINES: ${{matrix.defines}}
+          # Variables set here (to non-empty) will override the top-level environment variables, e.g.
+          # B2_VARIANT: ${{matrix.variant}}
+          # Set the (B2) target(s) to build, defaults to the test folder of the current library
+          # Can alternatively be done like this in the build step or in the build command of the build step, e.g. `run: B2_TARGETS=libs/$SELF/doc ci/build.sh`
+          # B2_TARGETS: libs/foo/test//bar
+        run: source ci/github/install.sh

-          if [ "$JOB_BUILDTYPE" == "boost" ]; then
+      - name: Setup coverage collection
+        if: matrix.coverage
+        run: ci/github/codecov.sh "setup"

-          echo '==================================> INSTALL'
+      - name: Run tests
+        if: '!matrix.coverity'
+        run: ci/build.sh

-          git clone https://github.com/boostorg/boost-ci.git boost-ci
-          cp -pr boost-ci/ci boost-ci/.codecov.yml .
+      - name: Upload coverage
+        if: matrix.coverage
+        run: ci/codecov.sh "upload"
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

-          if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-              unset -f cd
-          fi
+      - 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 }}

-          export SELF=`basename $REPO_NAME`
-          export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-          export BOOST_CI_SRC_FOLDER=$(pwd)
-
-          . ./ci/common_install.sh
-
-          echo '==================================> SCRIPT'
-
-          cd $BOOST_ROOT/libs/$SELF
-          ci/travis/build.sh
-
-          elif [ "$JOB_BUILDTYPE" == "b5847f804b-0fcaf592f9" ]; then
-
-          echo '==================================> INSTALL'
-
-          git clone https://github.com/boostorg/boost-ci.git boost-ci
-          cp -pr boost-ci/ci boost-ci/.codecov.yml .
-
-          if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-              unset -f cd
-          fi
-
-          export SELF=`basename $REPO_NAME`
-          export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-          export BOOST_CI_SRC_FOLDER=$(pwd)
-
-          . ./ci/common_install.sh
-
-          echo '==================================> SCRIPT'
-
-          cd $BOOST_ROOT/libs/$SELF
-          ci/travis/codecov.sh
-
-          elif [ "$JOB_BUILDTYPE" == "b5847f804b-db180b7bd2" ]; then
-
-          echo '==================================> INSTALL'
-
-          git clone https://github.com/boostorg/boost-ci.git boost-ci
-          cp -pr boost-ci/ci boost-ci/.codecov.yml .
-
-          if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-              unset -f cd
-          fi
-
-          export SELF=`basename $REPO_NAME`
-          export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-          export BOOST_CI_SRC_FOLDER=$(pwd)
-
-          . ./ci/common_install.sh
-
-          echo '==================================> SCRIPT'
-
-          cd $BOOST_ROOT/libs/$SELF
-          ci/travis/valgrind.sh
-
-          elif [ "$JOB_BUILDTYPE" == "b5847f804b-cce9827eb5" ]; then
-
-          echo '==================================> INSTALL'
-
-          git clone https://github.com/boostorg/boost-ci.git boost-ci
-          cp -pr boost-ci/ci boost-ci/.codecov.yml .
-
-          if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-              unset -f cd
-          fi
-
-          export SELF=`basename $REPO_NAME`
-          export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-          export BOOST_CI_SRC_FOLDER=$(pwd)
-
-          . ./ci/common_install.sh
-
-          echo '==================================> SCRIPT'
-
-          if  [ -n "${COVERITY_SCAN_NOTIFICATION_EMAIL}" -a \( "$TRAVIS_BRANCH" = "develop" -o "$TRAVIS_BRANCH" = "master" \) -a \("$GITHUB_EVENT_NAME" = "push" -o "$GITHUB_EVENT_NAME" = "cron" \) ] ; then
-          cd $BOOST_ROOT/libs/$SELF
-          ci/travis/coverity.sh
-          fi
-
-          fi
-  osx:
+  windows:
+    defaults:
+      run:
+        shell: cmd
    strategy:
      fail-fast: false
      matrix:
        include:
-          - name: "B2_TOOLSET=clang B2_CXXSTD=03,11,17 Job 14"
-            buildtype: "boost"
-            packages: ""
-            os: "macos-10.15"
-            cxx: "g++"
-            sources: ""
-            llvm_os: ""
-            llvm_ver: ""
-            xcode_version: 11.7
-            b2_toolset: "clang"
-            b2_cxxstd: "03,11,17"
+          - { toolset: msvc-14.0, cxxstd: '14,latest',      addrmd: '32,64', os: windows-2019 }
+          - { toolset: msvc-14.2, cxxstd: '14,17,20',       addrmd: '32,64', os: windows-2019 }
+          - { toolset: msvc-14.3, cxxstd: '14,17,20,latest',addrmd: '32,64', os: windows-2022 }
+          - { name: Collect coverage, coverage: yes,
+              toolset: msvc-14.3, cxxstd: 'latest',         addrmd: '64',    os: windows-2022 }
+          - { toolset: clang-win, cxxstd: '14,17,latest',   addrmd: '32,64', os: windows-2022 }
+          - { toolset: gcc,       cxxstd: '11,14,17,2a',    addrmd: '64',    os: windows-2019 }

-    runs-on: ${{ matrix.os }}
+    runs-on: ${{matrix.os}}

    steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4

-      - name: Set DEVELOPER_DIR
-        if: matrix.xcode_version != ''
-        run: echo "DEVELOPER_DIR=/Applications/Xcode_${{ matrix.xcode_version }}.app/Contents/Developer" >> $GITHUB_ENV
-      - name: Test DEVELOPER_DIR
-        run: echo $DEVELOPER_DIR
-
-      - name: "osx"
-        shell: bash
-        env:
-          CXX: ${{ matrix.cxx }}
-          SOURCES: ${{ matrix.sources }}
-          LLVM_OS: ${{ matrix.llvm_os }}
-          LLVM_VER: ${{ matrix.llvm_ver }}
-          PACKAGES: ${{ matrix.packages }}
-          JOB_BUILDTYPE: ${{ matrix.buildtype }}
-          B2_TOOLSET: ${{ matrix.b2_toolset }}
-          B2_CXXSTD: ${{ matrix.b2_cxxstd }}
-          B2_CXXFLAGS: ${{ matrix.b2_cxxflags }}
-          COMMENT: ${{ matrix.comment }}
-          B2_DEFINES: ${{ matrix.b2_defines }}
-          B2_VARIANT: ${{ matrix.b2_variant }}
-          B2_LINKFLAGS: ${{ matrix.b2_linkflags }}
-          UBSAN_OPTIONS: ${{ matrix.ubsan_options }}
-          B2_TESTFLAGS: ${{ matrix.b2_testflags }}
-          VALGRIND_OPTS: ${{ matrix.valgrind_opts }}
-          TRAVIS_BRANCH: ${{ github.base_ref }}
-          TRAVIS_OS_NAME: "osx"
+      - name: Fetch Boost.CI
+        uses: actions/checkout@v4
+        with:
+          repository: boostorg/boost-ci
+          ref: master
+          path: boost-ci-cloned
+      - name: Get CI scripts folder
        run: |
-          echo '==================================> SETUP'
-          set -e
-          sudo mv /Library/Developer/CommandLineTools /Library/Developer/CommandLineTools.bck
-          echo '==================================> PACKAGES'
-          echo '==================================> INSTALL AND COMPILE'
-          set -e
-          export TRAVIS_BUILD_DIR=$(pwd)
-          export TRAVIS_BRANCH=${TRAVIS_BRANCH:-$(echo $GITHUB_REF | awk 'BEGIN { FS = "/" } ; { print $3 }')}
-          export VCS_COMMIT_ID=$GITHUB_SHA
-          export GIT_COMMIT=$GITHUB_SHA
-          export REPO_NAME=$(basename $GITHUB_REPOSITORY)
-          export USER=$(whoami)
-          export CC=${CC:-gcc}
-          export PATH=~/.local/bin:/usr/local/bin:$PATH
+            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

-          if [ "$JOB_BUILDTYPE" == "boost" ]; then
+      - name: Setup Boost
+        run: ci\github\install.bat

-          echo '==================================> INSTALL'
+      - name: Run tests
+        if: '!matrix.coverage'
+        run: ci\build.bat
+        env:
+          B2_TOOLSET: ${{matrix.toolset}}
+          B2_CXXSTD: ${{matrix.cxxstd}}
+          B2_ADDRESS_MODEL: ${{matrix.addrmd}}

-          git clone https://github.com/boostorg/boost-ci.git boost-ci
-          cp -pr boost-ci/ci boost-ci/.codecov.yml .
+      - 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}}

-          if [ "$TRAVIS_OS_NAME" == "osx" ]; then
-              unset -f cd
-          fi
+      - name: Upload coverage
+        if: matrix.coverage
+        uses: codecov/codecov-action@v5
+        with:
+          disable_search: true
+          fail_ci_if_error: true
+          files: __out/cobertura.xml
+          name: github-actions
+          token: ${{secrets.CODECOV_TOKEN}}
+          verbose: true

-          export SELF=`basename $REPO_NAME`
-          export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
-          export BOOST_CI_SRC_FOLDER=$(pwd)
+  MSYS2:
+    defaults:
+      run:
+        shell: msys2 {0}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { sys: MINGW32, compiler: gcc, cxxstd: '11,17,20' }
+          - { sys: MINGW64, compiler: gcc, cxxstd: '11,17,20' }

-          . ./ci/common_install.sh
+    runs-on: windows-latest

-          echo '==================================> SCRIPT'
+    steps:
+      - uses: actions/checkout@v4

-          cd $BOOST_ROOT/libs/$SELF
-          ci/travis/build.sh
+      - name: Setup MSYS2 environment
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: ${{matrix.sys}}
+          update: true
+          install: git python
+          pacboy: gcc:p cmake:p ninja:p
+
+      - name: Fetch Boost.CI
+        uses: actions/checkout@v4
+        with:
+          repository: boostorg/boost-ci
+          ref: master
+          path: boost-ci-cloned
+      - name: Get CI scripts folder
+        run: |
+            # Copy ci folder if not testing Boost.CI
+            [[ "$GITHUB_REPOSITORY" =~ "boost-ci" ]] || cp -r boost-ci-cloned/ci .
+            rm -rf boost-ci-cloned
+
+      - name: Setup Boost
+        env:
+          B2_COMPILER: ${{matrix.compiler}}
+          B2_CXXSTD: ${{matrix.cxxstd}}
+          B2_SANITIZE: ${{matrix.sanitize}}
+          B2_STDLIB: ${{matrix.stdlib}}
+        run: ci/github/install.sh
+
+      - name: Run tests
+        run: ci/build.sh
+
+      # Run also the CMake tests to avoid having to setup another matrix for CMake on MSYS
+      - name: Run CMake tests
+        run: |
+            cd "$BOOST_ROOT"
+            mkdir __build_cmake_test__ && cd __build_cmake_test__
+            cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug -DBOOST_INCLUDE_LIBRARIES=$SELF -DBUILD_SHARED_LIBS=ON -DBUILD_TESTING=ON -DBoost_VERBOSE=ON ..
+            cmake --build . --target tests --config Debug -j$B2_JOBS
+            ctest --output-on-failure --build-config Debug
+
+  CMake:
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - { os: ubuntu-20.04, build_shared: ON,  build_type: Debug, generator: 'Unix Makefiles' }
+          - { os: ubuntu-20.04, build_shared: OFF, build_type: Debug, generator: 'Unix Makefiles' }
+          - { os: windows-2019, build_shared: ON,  build_type: Debug, generator: 'Visual Studio 16 2019' }
+          - { os: windows-2019, build_shared: OFF, build_type: Debug, generator: 'Visual Studio 16 2019' }
+
+    timeout-minutes: 120
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Fetch Boost.CI
+        uses: actions/checkout@v4
+        with:
+          repository: boostorg/boost-ci
+          ref: master
+          path: boost-ci-cloned
+      - name: Get CI scripts folder
+        run: |
+            # Copy ci folder if not testing Boost.CI
+            [[ "$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 tests
+        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 . --target tests --config ${{matrix.build_type}} -j$B2_JOBS
+            ctest --output-on-failure --build-config ${{matrix.build_type}}
+
+      - name: Run CMake subdir tests
+        run: |
+            cmake_test_folder="$BOOST_ROOT/libs/$SELF/test/cmake_test" # New unified folder
+            [ -d "$cmake_test_folder" ] || cmake_test_folder="$BOOST_ROOT/libs/$SELF/test/cmake_subdir_test"
+            cd "$cmake_test_folder"
+            mkdir __build_cmake_subdir_test__ && cd __build_cmake_subdir_test__
+            cmake -G "${{matrix.generator}}" -DBOOST_CI_INSTALL_TEST=OFF -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBUILD_SHARED_LIBS=${{matrix.build_shared}} ..
+            cmake --build . --config ${{matrix.build_type}} -j$B2_JOBS
+            ctest --output-on-failure --build-config ${{matrix.build_type}}
+
+      - name: Install Library
+        run: |
+            cd "$BOOST_ROOT"
+            mkdir __build_cmake_install_test__ && cd __build_cmake_install_test__
+            cmake -G "${{matrix.generator}}" -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBOOST_INCLUDE_LIBRARIES=$SELF -DBUILD_SHARED_LIBS=${{matrix.build_shared}} -DCMAKE_INSTALL_PREFIX=~/.local -DBoost_VERBOSE=ON -DBoost_DEBUG=ON ..
+            cmake --build . --target install --config ${{matrix.build_type}} -j$B2_JOBS
+      - name: Run CMake install tests
+        run: |
+            cmake_test_folder="$BOOST_ROOT/libs/$SELF/test/cmake_test" # New unified folder
+            [ -d "$cmake_test_folder" ] || cmake_test_folder="$BOOST_ROOT/libs/$SELF/test/cmake_install_test"
+            cd "$cmake_test_folder"
+            mkdir __build_cmake_install_test__ && cd __build_cmake_install_test__
+            cmake -G "${{matrix.generator}}" -DBOOST_CI_INSTALL_TEST=ON -DCMAKE_BUILD_TYPE=${{matrix.build_type}} -DBUILD_SHARED_LIBS=${{matrix.build_shared}} -DCMAKE_PREFIX_PATH=~/.local ..
+            cmake --build . --config ${{matrix.build_type}} -j$B2_JOBS
+            ctest --output-on-failure --build-config ${{matrix.build_type}}

-          fi
--- a/.travis.yml
+++ b/.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
--- a/11
+++ b/11
@@ -1,11 +0,0 @@
-#  Boost.DynamicBitset Library Jamfile
-#
-#  Copyright (c) 2018 James E. King III
-#
-#  Use, modification, and distribution are subject to 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)
-
-# please order by name to ease maintenance
-build-project example ;
-build-project test ;
--- a/README.md
+++ b/README.md
@@ -1,20 +1,21 @@
-DynamicBitset, part of collection of the [Boost C++ Libraries](http://github.com/boostorg), is similar to std::bitset however the size is specified at run-time instead of at compile-time.
+DynamicBitset, part of collection of the [Boost C++ Libraries](https://github.com/boostorg), is similar to std::bitset however the size is specified at run-time instead of at compile-time.

 ### License

-Distributed under the [Boost Software License, Version 1.0](http://www.boost.org/LICENSE_1_0.txt).
+Distributed under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).

 ### Properties

-* C++03
+* C++11
 * Header-only

 ### Build Status

-Branch          | Travis | 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)
+<!-- boost-ci/tools/makebadges.sh --project dynamic_bitset --appveyor n7bki5ka3v918r5r --codecov PVG5jth1ez --coverity 16167 -->
+| Branch          | GHA CI | Appveyor | Coverity Scan | codecov.io | Deps | Docs | Tests |
+| :-------------: | ------ | -------- | ------------- | ---------- | ---- | ---- | ----- |
+| [`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/n7bki5ka3v918r5r/branch/master?svg=true)](https://ci.appveyor.com/project/cppalliance/dynamic-bitset/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?token=PVG5jth1ez)](https://codecov.io/gh/boostorg/dynamic_bitset/tree/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)](https://www.boost.org/doc/libs/master/libs/dynamic_bitset) | [![Enter the Matrix](https://img.shields.io/badge/matrix-master-brightgreen.svg)](https://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/n7bki5ka3v918r5r/branch/develop?svg=true)](https://ci.appveyor.com/project/cppalliance/dynamic-bitset/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?token=PVG5jth1ez)](https://codecov.io/gh/boostorg/dynamic_bitset/tree/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)](https://www.boost.org/doc/libs/develop/libs/dynamic_bitset) | [![Enter the Matrix](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](https://www.boost.org/development/tests/develop/developer/dynamic_bitset.html)

 ### Directories

@@ -27,8 +28,7 @@ Branch          | Travis | Appveyor | Coverity Scan | codecov.io | Deps | Docs |

 ### More information

-* [Ask questions](http://stackoverflow.com/questions/ask?tags=c%2B%2B,boost,boost-dynamic_bitset)
+* [Ask questions](https://stackoverflow.com/questions/ask?tags=c%2B%2B,boost,boost-dynamic_bitset)
 * [Report bugs](https://github.com/boostorg/dynamic_bitset/issues): Be sure to mention Boost version, platform and compiler you're using. A small compilable code sample to reproduce the problem is always good as well.
-* Submit your patches as pull requests against **develop** branch. Note that by submitting patches you agree to license your modifications under the [Boost Software License, Version 1.0](http://www.boost.org/LICENSE_1_0.txt).
-* Discussions about the library are held on the [Boost developers mailing list](http://www.boost.org/community/groups.html#main). Be sure to read the [discussion policy](http://www.boost.org/community/policy.html) before posting and add the `[dynamic_bitset]` tag at the beginning of the subject line.
-
+* Submit your patches as pull requests against **develop** branch. Note that by submitting patches you agree to license your modifications under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).
+* Discussions about the library are held on the [Boost developers mailing list](https://www.boost.org/community/groups.html#main). Be sure to read the [discussion policy](https://www.boost.org/community/policy.html) before posting and add the `[dynamic_bitset]` tag at the beginning of the subject line.
--- a/appveyor.yml
+++ b/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)
--- a/build.jam
+++ b/build.jam
@@ -0,0 +1,30 @@
+# 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/assert//boost_assert
+    /boost/config//boost_config
+    /boost/container_hash//boost_container_hash
+    /boost/core//boost_core
+    /boost/integer//boost_integer
+    /boost/move//boost_move
+    /boost/static_assert//boost_static_assert
+    /boost/throw_exception//boost_throw_exception ;
+
+project /boost/dynamic_bitset
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_dynamic_bitset : : : : <library>$(boost_dependencies) ]
+    [ alias all : boost_dynamic_bitset example test ]
+    ;
+
+call-if : boost-library dynamic_bitset
+    ;
+
--- a/dynamic_bitset.html
+++ b/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;
@@ -236,6 +238,7 @@ public:
    bool <a href="#intersects">intersects</a>(const dynamic_bitset&amp; a) const;

    size_type <a href="#find_first">find_first</a>() const;
+    size_type <a href="#find_first_off">find_first</a>(size_type pos) const;
    size_type <a href="#find_next">find_next</a>(size_type pos) const;

 };
@@ -1250,6 +1253,24 @@ 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
@@ -1353,6 +1374,15 @@ size_type <a id = "find_first">find_first</a>() const;
 <b>Returns:</b> the lowest index <tt>i</tt> such as bit <tt>i</tt>
 is set, or <tt>npos</tt> if <tt>*this</tt> has no on bits.

+<hr />
+<pre>
+size_type <a id = "find_first_off">find_first</a>(size_type pos) const;
+</pre>
+
+<b>Returns:</b> the lowest index <tt>i</tt> greater or equal to
+<tt>offset</tt> such as bit <tt>i</tt> is set, or <tt>npos</tt> if
+no such index exists.
+
 <hr />
 <pre>
 size_type <a id="find_next">find_next</a>(size_type pos) const;
--- a/example/Jamfile
+++ b/example/Jamfile
@@ -7,9 +7,12 @@
 #
 # -----------------------------------------------------------

-exe timing_tests 
-    : timing_tests.cpp 
-      ../../timer/build//boost_timer
+project : requirements <library>/boost/dynamic_bitset//boost_dynamic_bitset ;
+
+exe timing_tests
+    : timing_tests.cpp
+      /boost/timer//boost_timer
+      /boost/detail//boost_detail
    ;

 exe example1
--- a/include/boost/dynamic_bitset/dynamic_bitset.hpp
+++ b/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;
@@ -323,6 +325,7 @@ public:

    // lookup
    size_type find_first() const;
+    size_type find_first(size_type pos) const;
    size_type find_next(size_type pos) const;


@@ -727,7 +730,7 @@ dynamic_bitset(dynamic_bitset<Block, Allocator>&& b)
  : m_bits(boost::move(b.m_bits)), m_num_bits(boost::move(b.m_num_bits))
 {
    // Required so that assert(m_check_invariants()); works.
-    assert((b.m_bits = buffer_type()).empty());
+    assert((b.m_bits = buffer_type(get_allocator())).empty());
    b.m_num_bits = 0;
 }

@@ -740,7 +743,7 @@ operator=(dynamic_bitset<Block, Allocator>&& b)
    m_bits = boost::move(b.m_bits);
    m_num_bits = boost::move(b.m_num_bits);
    // Required so that assert(m_check_invariants()); works.
-    assert((b.m_bits = buffer_type()).empty());
+    assert((b.m_bits = buffer_type(get_allocator())).empty());
    b.m_num_bits = 0;
    return *this;
 }
@@ -813,8 +816,7 @@ void dynamic_bitset<Block, Allocator>::
 push_back(bool bit)
 {
  const size_type sz = size();
-  resize(sz + 1);
-  set(sz, bit);
+  resize(sz + 1, bit);
 }

 template <typename Block, typename Allocator>
@@ -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
 {
@@ -1305,7 +1326,7 @@ to_ulong() const

  // Check for overflows. This may be a performance burden on very
  // large bitsets but is required by the specification, sorry
-  if (find_next(ulong_width - 1) != npos)
+  if (find_first(ulong_width) != npos)
    BOOST_THROW_EXCEPTION(std::overflow_error("boost::dynamic_bitset::to_ulong overflow"));


@@ -1465,17 +1486,12 @@ dynamic_bitset<Block, Allocator>::find_first() const
    return m_do_find_from(0);
 }

-
 template <typename Block, typename Allocator>
 typename dynamic_bitset<Block, Allocator>::size_type
-dynamic_bitset<Block, Allocator>::find_next(size_type pos) const
+dynamic_bitset<Block, Allocator>::find_first(size_type pos) const
 {
-
    const size_type sz = size();
-    if (pos >= (sz-1) || sz == 0)
-        return npos;
-
-    ++pos;
+    if (pos >= sz) return npos;

    const size_type blk = block_index(pos);
    const block_width_type ind = bit_index(pos);
@@ -1487,7 +1503,15 @@ dynamic_bitset<Block, Allocator>::find_next(size_type pos) const
        pos + static_cast<size_type>(detail::lowest_bit(fore))
        :
        m_do_find_from(blk + 1);
+}

+
+template <typename Block, typename Allocator>
+typename dynamic_bitset<Block, Allocator>::size_type
+dynamic_bitset<Block, Allocator>::find_next(size_type pos) const
+{
+    if (pos == npos) return npos;
+    return find_first(pos + 1);
 }


--- a/meta/libraries.json
+++ b/meta/libraries.json
@@ -13,5 +13,5 @@
    "maintainers": [
        "Jeremy Siek <jeremy.siek -at- gmail.com>"
    ],
-    "cxxstd": "03"
+    "cxxstd": "11"
 }
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -7,22 +7,29 @@
 #

 import os ;
+import testing ;

 # import rules for testing conditional on config file variables
-import ../../config/checks/config : requires ;
+import-search /boost/config/checks ;
+import config : requires ;
+
+project : requirements <library>/boost/dynamic_bitset//boost_dynamic_bitset ;

 test-suite dynamic_bitset :

-    [ run dyn_bitset_unit_tests1.cpp : : : <library>/boost/system//boost_system ]
-    [ run dyn_bitset_unit_tests2.cpp : : : <library>/boost/system//boost_system ]
-    [ run dyn_bitset_unit_tests3.cpp : : : <library>/boost/system//boost_system ]
+    [ run dyn_bitset_unit_tests1.cpp : : : <library>/boost/filesystem//boost_filesystem
+                                           <library>/boost/system//boost_system ]
+    [ run dyn_bitset_unit_tests2.cpp : : : <library>/boost/filesystem//boost_filesystem
+                                           <library>/boost/system//boost_system ]
+    [ run dyn_bitset_unit_tests3.cpp : : : <library>/boost/filesystem//boost_filesystem
+                                           <library>/boost/system//boost_system ]
    [ run dyn_bitset_unit_tests4.cpp : : : <library>/boost/filesystem//boost_filesystem
                                           <library>/boost/system//boost_system ]
    [ run test_ambiguous_set.cpp ]
    [ run test_lowest_bit.cpp ]

    [ run test_boost_hash.cpp ]
-    [ run test_std_hash.cpp          : : : [ requires cxx11_hdr_unordered_set ] ] 
+    [ run test_std_hash.cpp          : : : [ requires cxx11_hdr_unordered_set ] ]

    [ compile-fail test_std_hash.cpp : [ requires cxx11_hdr_unordered_set ]
                                       <define>BOOST_DYNAMIC_BITSET_NO_STD_HASH
@@ -36,6 +43,7 @@ if ! [ os.environ UBSAN_OPTIONS ]

    [ run dyn_bitset_unit_tests5.cpp
       : : : <define>_SCL_SECURE_NO_WARNINGS=1
+             <library>/boost/filesystem//boost_filesystem
             <library>/boost/serialization//boost_serialization
             <library>/boost/system//boost_system ]
    ;
--- a/test/bitset_test.hpp
+++ b/test/bitset_test.hpp
@@ -967,25 +967,25 @@ struct bitset_test {
    BOOST_TEST(b.intersects(a) == have_intersection);
  }

-  static void find_first(const Bitset& b)
+  static void find_first(const Bitset& b, typename Bitset::size_type offset = 0)
  {
-      // find first non-null bit, if any
-      typename Bitset::size_type i = 0;
-      while (i < b.size() && b[i] == 0)
-          ++i;
-
-      if (i == b.size())
-        BOOST_TEST(b.find_first() == Bitset::npos); // not found;
-      else {
-        BOOST_TEST(b.find_first() == i);
-        BOOST_TEST(b.test(i) == true);
-      }
+    // find first non-null bit from offset onwards, if any
+    typename Bitset::size_type i = offset;
+    while (i < b.size() && b[i] == 0)
+        ++i;

+    if (i >= b.size())
+      BOOST_TEST(b.find_first(offset) == Bitset::npos); // not found;
+    else {
+      BOOST_TEST(b.find_first(offset) == i);
+      BOOST_TEST(b.test(i) == true);
+    }
  }

-  static void find_next(const Bitset& b, typename Bitset::size_type prev)
+  static void find_pos(const Bitset& b, typename Bitset::size_type pos)
  {
-    BOOST_TEST(next_bit_on(b, prev) == b.find_next(prev));
+    find_first(b, pos);
+    BOOST_TEST(next_bit_on(b, pos) == b.find_next(pos));
  }

  static void operator_equal(const Bitset& a, const Bitset& b)
@@ -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)
--- a/test/cmake_test/CMakeLists.txt
+++ b/test/cmake_test/CMakeLists.txt
@@ -0,0 +1,22 @@
+# Copyright 2021-2024 Alexander Grund
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
+
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(cmake_subdir_test LANGUAGES CXX)
+
+# Those 2 should work the same
+# while using find_package for the installed Boost avoids the need to manually specify dependencies
+if(BOOST_CI_INSTALL_TEST)
+    find_package(boost_dynamic_bitset REQUIRED)
+else()
+    set(BOOST_INCLUDE_LIBRARIES dynamic_bitset)
+    add_subdirectory(../../../.. deps/boost EXCLUDE_FROM_ALL)
+endif()
+
+add_executable(main main.cpp)
+target_link_libraries(main Boost::dynamic_bitset)
+
+enable_testing()
+add_test(NAME main COMMAND main)
--- a/test/cmake_test/main.cpp
+++ b/test/cmake_test/main.cpp
@@ -0,0 +1,8 @@
+#include <boost/dynamic_bitset.hpp>
+
+int main()
+{
+    const boost::dynamic_bitset<> db{3, 4};
+
+    return db[2] ? 0 : 1;
+}
--- a/test/dyn_bitset_unit_tests1.cpp
+++ b/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,
--- a/test/dyn_bitset_unit_tests3.cpp
+++ b/test/dyn_bitset_unit_tests3.cpp
@@ -329,26 +329,26 @@ void run_test_cases( BOOST_EXPLICIT_TEMPLATE_TYPE(Block) )
      Tests::find_first(b);
  }
  //=====================================================================
-  // Test find_next
+  // Test find_next and offset find_first
  {
      // empty bitset
      bitset_type b;

      // check
-      Tests::find_next(b, 0);
-      Tests::find_next(b, 1);
-      Tests::find_next(b, 200);
-      Tests::find_next(b, b.npos);
+      Tests::find_pos(b, 0);
+      Tests::find_pos(b, 1);
+      Tests::find_pos(b, 200);
+      Tests::find_pos(b, b.npos);
  }
  {
      // bitset of size 1 (find_next can never find)
      bitset_type b(1, 1ul);

      // check
-      Tests::find_next(b, 0);
-      Tests::find_next(b, 1);
-      Tests::find_next(b, 200);
-      Tests::find_next(b, b.npos);
+      Tests::find_pos(b, 0);
+      Tests::find_pos(b, 1);
+      Tests::find_pos(b, 200);
+      Tests::find_pos(b, b.npos);
  }
  {
      // all-1s bitset
@@ -358,9 +358,9 @@ void run_test_cases( BOOST_EXPLICIT_TEMPLATE_TYPE(Block) )
      // check
      const typename bitset_type::size_type larger_than_size = 5 + b.size();
      for(typename bitset_type::size_type i = 0; i <= larger_than_size; ++i) {
-          Tests::find_next(b, i);
+          Tests::find_pos(b, i);
      }
-      Tests::find_next(b, b.npos);
+      Tests::find_pos(b, b.npos);
  }
  {
      // a bitset with 1s at block boundary only
@@ -379,9 +379,9 @@ void run_test_cases( BOOST_EXPLICIT_TEMPLATE_TYPE(Block) )
      // check
      const typename bitset_type::size_type larger_than_size = 5 + b.size();
      for (i = 0; i <= larger_than_size; ++i) {
-          Tests::find_next(b, i);
+          Tests::find_pos(b, i);
      }
-      Tests::find_next(b, b.npos);
+      Tests::find_pos(b, b.npos);

  }
  {
@@ -397,9 +397,9 @@ void run_test_cases( BOOST_EXPLICIT_TEMPLATE_TYPE(Block) )
      // check
      const typename bitset_type::size_type larger_than_size = 5 + b.size();
      for (i = 0; i <= larger_than_size; ++i) {
-          Tests::find_next(b, i);
+          Tests::find_pos(b, i);
      }
-      Tests::find_next(b, b.npos);
+      Tests::find_pos(b, b.npos);

  }
  //=====================================================================
Author	SHA1	Message	Date
Unix&Me	b96250c3c6	simplify push_back logic	2024-12-28 16:25:41 -05:00
James E. King III	d6eb91388f	Update CI to 2024.12 spec, update README	2024-12-28 21:25:17 +00:00
Anthony Eden	41d08970cd	Support stateful allocators	2024-12-24 09:29:42 -05:00
James E. King III	cd59d325d3	Enable branch coverage.	2024-11-30 19:43:12 +00:00
twomice	34f55c74b1	Implement find_first(pos).	2024-11-26 13:59:18 -05:00
James E. King III	b33c19e05c	Given GHA busted ubuntu-18.04 containers, those build jobs have been removed. Others have been updated to move forward.	2024-11-26 18:56:51 +00:00
Alexander Grund	b3c78809c0	GHA: Reenable CMake jobs	2024-11-26 12:14:09 -05:00
Alexander Grund	3347ea317c	GHA: Add CMake subdir test	2024-11-26 12:14:09 -05:00
James E. King III	8ad7522ca0	Fix documentation links in the README	2024-11-25 22:27:27 +00:00
James E. King III	4eada1889f	Appveyor: move to cppalliance account - Removed MINGW64 run from Appveyor, as it is done in GHA. - Updated README to use badges from cppalliance org.	2024-11-25 22:21:52 +00:00
James E. King III	9f5a992ffa	Remove GHA macos-12 as it is not offered any more.	2024-11-25 20:07:45 +00:00
James E. King III	0b9a081d97	Refresh GitHub Actions and Appveyor CI Moved baseline to C++11 due to our dependencies. - Remove C++98 and C++03 from CI and mark C++11 baseline - Remove duplicate jobs between Appveyor and GHA - Disable CMake GHA jobs for now; broken	2024-11-25 18:59:55 +00:00
Rene Rivera	053fadace9	Update build deps.	2024-11-24 06:48:02 -05:00
Rene Rivera	2cbf3ad7d8	Move inter-lib dependencies to a project variable and into the build targets.	2024-11-24 06:48:02 -05:00
Rene Rivera	3bb682db62	Update copyright dates.	2024-11-24 06:48:02 -05:00
Rene Rivera	76b4bba9c2	Bump B2 require to 5.2	2024-11-24 06:48:02 -05:00
Rene Rivera	11d94f6794	Add requires-b2 check to top-level build file.	2024-11-24 06:48:02 -05:00
Rene Rivera	0231a500ed	Add missing import-search for cconfig/predef checks.	2024-11-24 06:48:02 -05:00
Rene Rivera	7939bf7ae6	Add missing b2 testing module import.	2024-11-24 06:48:02 -05:00
Rene Rivera	1eed20166e	Switch to library requirements instead of source. As source puts extra source in install targets.	2024-11-24 06:48:02 -05:00
Rene Rivera	1e9aa506d0	Make the library modular usable.	2024-11-24 06:48:02 -05:00
Alexander Grund	8e20aa1462	Fix ccache saving on cache hit (#70 ) See boostorg/boost-ci#166	2022-06-24 08:58:29 -07:00
akr	d4be7a4fcb	Changed the order of at()	2022-05-02 20:38:40 -04:00
akr	29e1d40e88	Added std::out_of_range tests	2022-05-02 20:38:40 -04:00
akr	ccca25537a	Updated docs	2022-05-02 20:38:40 -04:00
akr	12be4b4464	Added tests	2022-05-02 20:38:40 -04:00
akr	b15fd0075f	Added at(size_type)	2022-05-02 20:38:40 -04:00
James E. King III	abd6417090	re-add mingw to ci	2022-04-24 21:16:37 -04:00
James E. King III	eb3f18086e	Fix badges in readme for develop	2022-04-15 16:21:30 -04:00
James E. King III	c811f468cd	align CI to boost-ci standard and update README	2022-04-15 12:40:54 -04:00
Sam Darwin	709a03b9e2	Update GitHub Actions CI file (#61 )	2021-08-04 07:07:10 -07:00