Add .github/workflows

libc++ disables std::uncaught_exceptions for Mac OS < 10.12 and
iOS < 10.0, even though it defines __cpp_lib_uncaught_exceptions.

Fixes https://github.com/boostorg/core/issues/80.

.github/workflows/posix.yml

@@ -0,0 +1,84 @@
+name: POSIX
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - feature/**
+
+env:
+  LIBRARY: core
+  UBSAN_OPTIONS: print_stacktrace=1
+
+jobs:
+  CI:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: gcc-4.7
+            cxxstd: "03,11"
+            os: ubuntu-16.04
+            install: g++-4.7
+          - toolset: gcc-4.8
+            cxxstd: "03,11"
+            os: ubuntu-16.04
+            install: g++-4.8
+          - toolset: gcc-4.9
+            cxxstd: "03,11"
+            os: ubuntu-16.04
+            install: g++-4.9
+          - toolset: gcc-5
+            cxxstd: "03,11,14,1z"
+            os: ubuntu-16.04
+          - toolset: gcc-6
+            cxxstd: "03,11,14,1z"
+            os: ubuntu-16.04
+            install: g++-6
+          - toolset: gcc-7
+            cxxstd: "03,11,14,17"
+            os: ubuntu-18.04
+          - toolset: gcc-8
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-18.04
+          - toolset: gcc-9
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-18.04
+          - toolset: gcc-10
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-18.04
+          - toolset: clang
+            cxxstd: "03,11,14,17,2a"
+            os: ubuntu-18.04
+          - toolset: clang
+            cxxstd: "03,11,14,17,2a"
+            os: macos-10.15
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install packages
+        if: matrix.install
+        run: sudo apt install ${{matrix.install}}
+
+      - name: Setup Boost
+        run: |
+          REF=${GITHUB_BASE_REF:-$GITHUB_REF}
+          BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true
+          cd ..
+          git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" $LIBRARY
+          ./bootstrap.sh
+          ./b2 -d0 headers
+
+      - name: Run tests
+        run: |
+          cd ../boost-root
+          ./b2 -j3 libs/$LIBRARY/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} variant=debug,release

.github/workflows/windows.yml

@@ -0,0 +1,51 @@
+name: Windows
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - feature/**
+
+env:
+  LIBRARY: core
+
+jobs:
+  CI:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: msvc-14.1
+            cxxstd: "14,17,latest"
+            os: windows-2016
+          - toolset: msvc-14.2
+            cxxstd: "14,17,latest"
+            os: windows-2019
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Boost
+        shell: cmd
+        run: |
+          if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
+          set BOOST_BRANCH=develop
+          if "%GITHUB_BASE_REF%" == "master" set BOOST_BRANCH=master
+          cd ..
+          git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          xcopy /s /e /q %GITHUB_WORKSPACE% libs\%LIBRARY%\
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" %LIBRARY%
+          cmd /c bootstrap
+          b2 -d0 headers
+
+      - name: Run tests
+        shell: cmd
+        run: |
+          cd ../boost-root
+          b2 -j3 libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} variant=debug,release address-model=32,64

.travis.yml

@@ -1,12 +1,10 @@
-# Copyright 2016-2018 Peter Dimov
+# Copyright 2016-2019 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
 
 language: cpp
 
-sudo: false
-
-python: "2.7"
+dist: xenial
 
 branches:
   only:
@@ -99,7 +97,6 @@ matrix:
             - ubuntu-toolchain-r-test
 
     - os: linux
-      dist: trusty
       compiler: g++-7
       env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=03,11,14,17
       addons:
@@ -120,27 +117,67 @@ matrix:
             - ubuntu-toolchain-r-test
 
     - os: linux
-      compiler: g++-8
-      env: UBSAN=1 TOOLSET=gcc COMPILER=g++-8 CXXSTD=03,11,14,17 UBSAN_OPTIONS=print_stacktrace=1 LINKFLAGS=-fuse-ld=gold
+      compiler: g++-9
+      env: TOOLSET=gcc COMPILER=g++-9 CXXSTD=03,11,14,17,2a
       addons:
         apt:
           packages:
-            - g++-8
+            - g++-9
           sources:
             - ubuntu-toolchain-r-test
 
+    - os: linux
+      dist: bionic
+      compiler: g++-10
+      env: TOOLSET=gcc COMPILER=g++-10 CXXSTD=03,11,14,17,20
+      addons:
+        apt:
+          packages:
+            - g++-10
+          sources:
+            - sourceline: "ppa:ubuntu-toolchain-r/test"
+
+    - os: linux
+      dist: bionic
+      compiler: g++-10
+      env: UBSAN=1 TOOLSET=gcc COMPILER=g++-10 CXXSTD=03,11,14,17,20 UBSAN_OPTIONS=print_stacktrace=1 LINKFLAGS=-fuse-ld=gold
+      addons:
+        apt:
+          packages:
+            - g++-10
+          sources:
+            - sourceline: "ppa:ubuntu-toolchain-r/test"
+
     - os: linux
       compiler: clang++
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11
 
     - os: linux
+      dist: trusty
+      compiler: /usr/bin/clang++
+      env: TOOLSET=clang COMPILER=/usr/bin/clang++ CXXSTD=03,11
+      addons:
+        apt:
+          packages:
+            - clang-3.3
+
+    - os: linux
+      dist: trusty
+      compiler: /usr/bin/clang++
+      env: TOOLSET=clang COMPILER=/usr/bin/clang++ CXXSTD=03,11
+      addons:
+        apt:
+          packages:
+            - clang-3.4
+
+    - os: linux
+      dist: trusty
       compiler: clang++-3.5
-      env: TOOLSET=clang COMPILER=clang++-3.5 CXXSTD=03,11,14,1z
+      env: TOOLSET=clang COMPILER=clang++-3.5 CXXSTD=03,11
       addons:
         apt:
           packages:
             - clang-3.5
-            - libstdc++-4.9-dev
           sources:
             - ubuntu-toolchain-r-test
 
@@ -151,7 +188,16 @@ matrix:
         apt:
           packages:
             - clang-3.6
-            - libstdc++-4.9-dev
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: clang++-3.7
+      env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=03,11,14,1z
+      addons:
+        apt:
+          packages:
+            - clang-3.7
           sources:
             - ubuntu-toolchain-r-test
 
@@ -162,7 +208,6 @@ matrix:
         apt:
           packages:
             - clang-3.8
-            - libstdc++-4.9-dev
           sources:
             - ubuntu-toolchain-r-test
 
@@ -173,7 +218,6 @@ matrix:
         apt:
           packages:
             - clang-3.9
-            - libstdc++-4.9-dev
           sources:
             - ubuntu-toolchain-r-test
 
@@ -186,7 +230,6 @@ matrix:
             - clang-4.0
           sources:
             - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-4.0
 
     - os: linux
       compiler: clang++-5.0
@@ -197,7 +240,6 @@ matrix:
             - clang-5.0
           sources:
             - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-5.0
 
     - os: linux
       compiler: clang++-6.0
@@ -208,7 +250,6 @@ matrix:
             - clang-6.0
           sources:
             - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-6.0
 
     - os: linux
       compiler: clang++-7
@@ -219,42 +260,129 @@ matrix:
             - clang-7
           sources:
             - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-7
+            - llvm-toolchain-xenial-7
 
     - os: linux
-      compiler: clang++-6.0
-      env: UBSAN=1 TOOLSET=clang COMPILER=clang++-6.0 CXXSTD=03,11,14,1z UBSAN_OPTIONS=print_stacktrace=1
+      compiler: clang++-8
+      env: TOOLSET=clang COMPILER=clang++-8 CXXSTD=03,11,14,17,2a
       addons:
         apt:
           packages:
-            - clang-6.0
-            - libstdc++-5-dev
+            - clang-8
           sources:
             - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-6.0
+            - llvm-toolchain-xenial-8
 
     - os: linux
+      compiler: clang++-9
+      env: TOOLSET=clang COMPILER=clang++-9 CXXSTD=03,11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-9
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'deb https://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main'
+              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+
+    - os: linux
+      compiler: clang++-10
+      env: TOOLSET=clang COMPILER=clang++-10 CXXSTD=03,11,14,17,20
+      addons:
+        apt:
+          packages:
+            - clang-10
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'deb https://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main'
+              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+
+    - os: linux
+      compiler: clang++-10
+      env: UBSAN=1 TOOLSET=clang COMPILER=clang++-10 CXXSTD=03,11,14,17,20 UBSAN_OPTIONS=print_stacktrace=1
+      addons:
+        apt:
+          packages:
+            - clang-10
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: 'deb https://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main'
+              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
+
+    - os: linux
+      dist: trusty
       compiler: clang++-libc++
       env: TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=03,11,14,1z
       addons:
         apt:
           packages:
             - libc++-dev
+            - libc++abi-dev
 
     - os: linux
+      dist: trusty
       compiler: clang++-libc++
       env: UBSAN=1 TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=03,11,14,1z UBSAN_OPTIONS=print_stacktrace=1
       addons:
         apt:
           packages:
             - libc++-dev
+            - libc++abi-dev
 
     - os: osx
       compiler: clang++
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+      osx_image: xcode7.3
+
+    - os: osx
+      compiler: clang++
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+      osx_image: xcode8.3
+
+    - os: osx
+      compiler: clang++
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+      osx_image: xcode9.4
+
+    - os: osx
+      compiler: clang++
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+      osx_image: xcode10.1
+
+    - os: linux
+      env: CMAKE_TEST=1
+      script:
+        - mkdir __build__ && cd __build__
+        - cmake -DBOOST_ENABLE_CMAKE=1 -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES=core ..
+        - ctest --output-on-failure -R boost_core
+
+    - os: linux
+      env: CMAKE_SUBDIR_TEST=1
+      install:
+        - BOOST_BRANCH=develop
+        - if [ "$TRAVIS_BRANCH" = "master" ]; then BOOST_BRANCH=master; fi
+        - git clone -b $BOOST_BRANCH https://github.com/boostorg/config.git ../config
+        - git clone -b $BOOST_BRANCH https://github.com/boostorg/assert.git ../assert
+      script:
+      - cd test/cmake_subdir_test && mkdir __build__ && cd __build__
+      - cmake ..
+      - cmake --build .
+      - cmake --build . --target check
+
+    - os: linux
+      env: CMAKE_INSTALL_TEST=1
+      script:
+        - mkdir __build__ && cd __build__
+        - cmake -DBOOST_ENABLE_CMAKE=1 -DBoost_VERBOSE=1 -DBOOST_INCLUDE_LIBRARIES="assert;config;core" -DCMAKE_INSTALL_PREFIX=~/.local ..
+        - cmake --build . --target install
+        - cd ../libs/core/test/cmake_install_test && mkdir __build__ && cd __build__
+        - cmake -DCMAKE_INSTALL_PREFIX=~/.local ..
+        - cmake --build .
+        - cmake --build . --target check
 
 install:
-  - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+  - BOOST_BRANCH=develop
+  - if [ "$TRAVIS_BRANCH" = "master" ]; then BOOST_BRANCH=master; fi
   - cd ..
   - git clone -b $BOOST_BRANCH https://github.com/boostorg/boost.git boost-root
   - cd boost-root
@@ -263,9 +391,11 @@ install:
   - git submodule init libs/config
   - git submodule init libs/predef
   - git submodule init libs/static_assert
+  - git submodule init libs/throw_exception
   - git submodule init libs/type_traits
   - git submodule init tools/build
   - git submodule init tools/boost_install
+  - git submodule init tools/cmake
   - git submodule update --jobs 4
   - cp -r $TRAVIS_BUILD_DIR/* libs/core
   - ./bootstrap.sh
@@ -274,7 +404,8 @@ install:
 script:
   - |-
     echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
-  - ./b2 -j 3 libs/core/test toolset=$TOOLSET cxxstd=$CXXSTD variant=debug,release ${UBSAN:+cxxflags=-fsanitize=undefined cxxflags=-fno-sanitize-recover=undefined linkflags=-fsanitize=undefined define=UBSAN=1 debug-symbols=on} ${LINKFLAGS:+linkflags=$LINKFLAGS}
+  - BUILD_JOBS=`(nproc || sysctl -n hw.ncpu) 2> /dev/null`
+  - ./b2 -j $BUILD_JOBS libs/core/test toolset=$TOOLSET cxxstd=$CXXSTD variant=debug,release ${UBSAN:+cxxflags=-fsanitize=undefined cxxflags=-fno-sanitize-recover=undefined linkflags=-fsanitize=undefined define=UBSAN=1 debug-symbols=on} ${LINKFLAGS:+linkflags=$LINKFLAGS}
 
 notifications:
   email:

CMakeLists.txt

@@ -1,13 +1,10 @@
-# Copyright 2018 Peter Dimov
+# Copyright 2018, 2019 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 # See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
 
-# Partial (add_subdirectory only) and experimental CMake support
-# Subject to change; please do not rely on the contents of this file yet
+cmake_minimum_required(VERSION 3.5...3.16)
 
-cmake_minimum_required(VERSION 3.5)
-
-project(BoostCore LANGUAGES CXX)
+project(boost_core VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 
 add_library(boost_core INTERFACE)
 add_library(Boost::core ALIAS boost_core)
@@ -15,7 +12,20 @@ add_library(Boost::core ALIAS boost_core)
 target_include_directories(boost_core INTERFACE include)
 
 target_link_libraries(boost_core
-    INTERFACE
-        Boost::assert
-        Boost::config
+  INTERFACE
+    Boost::assert
+    Boost::config
 )
+
+if(BOOST_SUPERPROJECT_VERSION)
+
+  include(BoostInstall)
+  boost_install(TARGETS boost_core HEADER_DIRECTORY include/)
+
+endif()
+
+if(BUILD_TESTING)
+
+  add_subdirectory(test)
+
+endif()

appveyor.yml

@@ -1,4 +1,4 @@
-# Copyright 2016, 2017 Peter Dimov
+# Copyright 2016-2019 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
 
@@ -14,37 +14,52 @@ branches:
 
 environment:
   matrix:
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0,msvc-12.0
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0
+      ADDRMD: 32
 
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      TOOLSET: msvc-14.0
+      TOOLSET: msvc-12.0,msvc-14.0
+      ADDRMD: 32,64
 
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: msvc-14.1
+      ADDRMD: 32,64
       CXXSTD: 14,17
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+    # clang-win 32 bit fails to link with "unable to load mspdbcore.dll (error code: 126)"
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      TOOLSET: clang-win
+      ADDRMD: 64
+      CXXSTD: 14,17
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      TOOLSET: msvc-14.2
+      ADDRMD: 32,64
+      CXXSTD: 14,17,latest
+
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       ADDPATH: C:\cygwin\bin;
       TOOLSET: gcc
       CXXSTD: 03,11,14,1z
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       ADDPATH: C:\cygwin64\bin;
       TOOLSET: gcc
       CXXSTD: 03,11,14,1z
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       ADDPATH: C:\mingw\bin;
       TOOLSET: gcc
       CXXSTD: 03,11,14,1z
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       ADDPATH: C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin;
       TOOLSET: gcc
       CXXSTD: 03,11,14,1z
 
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       ADDPATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;
       TOOLSET: gcc
       CXXSTD: 03,11,14,1z
@@ -60,11 +75,12 @@ install:
   - git submodule init libs/config
   - git submodule init libs/predef
   - git submodule init libs/static_assert
+  - git submodule init libs/throw_exception
   - git submodule init libs/type_traits
   - git submodule init tools/build
   - git submodule init tools/boost_install
   - git submodule update --jobs 4
-  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\core
+  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\core\
   - cmd /c bootstrap
   - b2 headers
 
@@ -73,4 +89,5 @@ build: off
 test_script:
   - PATH=%ADDPATH%%PATH%
   - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
-  - b2 -j 3 libs/core/test toolset=%TOOLSET% %CXXSTD%
+  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
+  - b2 -j %NUMBER_OF_PROCESSORS% libs/core/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release

doc/Jamfile.v2

@@ -49,7 +49,7 @@ boostbook standalone
     <xsl:param>boost.root=../../../..
     <xsl:param>generate.section.toc.level=1
     <xsl:param>toc.max.depth=1
-    <format>pdf:<xsl:param>boost.url.prefix=http://www.boost.org/doc/libs/release/libs/core/doc/html
+    <format>pdf:<xsl:param>boost.url.prefix="http://www.boost.org/doc/libs/release/libs/core/doc/html"
   ;
 
 ###############################################################################

doc/alloc_construct.qbk

@@ -0,0 +1,149 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:alloc_construct alloc_construct, alloc_destroy]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/alloc_construct.hpp> provides function templates
+`alloc_construct`, `alloc_construct_n`, `alloc_destroy`, and `alloc_destroy_n`
+for allocator aware and exception safe construction and destruction of objects
+and arrays.
+
+[endsect]
+
+[section Example]
+
+The following example allocates storage for an array of `n` elements of `T`
+using an allocator `a` and constructs `T` elements in that storage. If any
+exception was thrown during construction of an element, the constructed
+elements are destroyed in reverse order.
+
+```
+template<class A>
+auto create(A& a, std::size_t n)
+{
+    auto p = a.allocate(n);
+    try {
+        boost::alloc_construct_n(a, boost::to_address(p), n);
+    } catch (...) {
+        a.deallocate(p, n);
+        throw;
+    }
+    return p;
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class A, class T>
+void alloc_destroy(A& a, T* p);
+
+template<class A, class T>
+void alloc_destroy_n(A& a, T* p, std::size_t n);
+
+template<class A, class T, class Args>
+void alloc_construct(A& a, T* p, Args&&... args);
+
+template<class A, class T>
+void alloc_construct_n(A& a, T* p, std::size_t n);
+
+template<class A, class T>
+void alloc_construct_n(A& a, T* p, std::size_t n, const T* l, std::size_t m);
+
+template<class A, class T, class I>
+void alloc_construct_n(A& a, T* p, std::size_t n, I begin);
+
+} /* boost */
+```
+
+[section Functions]
+
+[variablelist
+[[`template<class A, class T> void alloc_destroy(A& a, T* p);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects][`std::allocator_traits<A>::destroy(a, p)`.]]]]]
+[[`template<class A, class T> void alloc_destroy_n(A& a, T* p,
+std::size_t n);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[Destroys each `i`-th element in reverse order by calling
+`std::allocator_traits<A>::destroy(a, &p[i])`.]]]]]
+[[`template<class A, class T, class Args> void alloc_construct(A& a, T* p,
+Args&&... args);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[`std::allocator_traits<A>::construct(a, p, std::forward<Args>(args)...)`.]]]]]
+[[`template<class A, class T> void alloc_construct_n(A& a, T* p,
+std::size_t n);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[Constructs each `i`-th element in order by calling
+`std::allocator_traits<A>::construct(a, &p[i])`.]]
+[[Remarks]
+[If an exception is thrown destroys each already constructed `j`-th element in
+reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]
+[[`template<class A, class T> void alloc_construct_n(A& a, T* p, std::size_t n,
+const T* l, std::size_t m);`]
+[[variablelist
+[[Requires][`A` is an /Allocator/]]
+[[Effects]
+[Constructs each `i`-th element in order by calling
+`std::allocator_traits<A>::construct(a, &p[i], l[i % m])`.]]
+[[Remarks]
+[If an exception is thrown destroys each already constructed `j`-th element in
+reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]
+[[`template<class A, class T, class I> void alloc_construct_n(A& a, T* p,
+std::size_t n, I begin);`]
+[[variablelist
+[[Requires]
+[[itemized_list
+[`A` is an /Allocator/][`I` is an /InputIterator/]]]]
+[[Effects]
+[Constructs each `i`-th element in order by calling
+`std::allocator_traits<A>::construct(a, &p[i], *begin++])`.]]
+[[Remarks]
+[If an exception is thrown destroys each already constructed `j`-th element in
+reverse order by calling `std::allocator_traits<A>::destroy(a, &p[j])`.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[section Compatibility]
+
+When `BOOST_NO_CXX11_ALLOCATOR` is defined, and the C++11 allocator model is
+not supported, these functions invoke constructors and destructors directly
+without going through the supplied allocator.
+
+[endsect]
+
+[section Acknowledgments]
+
+Glen Fernandes originally implemented this functionality in Boost.Smart_Ptr and
+later moved these functions to Boost.Core for use in other Boost libraries,
+such as Boost.Multi_Array and Boost.Histogram.
+
+[endsect]
+
+[endsect]

doc/allocator_access.qbk

@@ -0,0 +1,243 @@
+[/
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section Allocator Access]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header `<boost/core/allocator_access.hpp>` provides the class and function
+templates to simplify allocator use. It provides the same functionality as the
+C++ standard library `std::allocator_traits` but with individual templates for
+each allocator feature.
+
+These facilities also simplify existing libraries by avoiding having to check
+for `BOOST_NO_CXX11_ALLOCATOR` and conditionally use `std::allocator_traits`.
+
+[endsect]
+
+[section Examples]
+
+The following example shows these utilities used in the definition of
+an allocator-aware container class:
+
+```
+template<class T, class A = boost::default_allocator<T> >
+class container
+    : boost::empty_value<typename boost::allocator_rebind<A, T>::type> {
+public:
+    typedef T value_type;
+    typedef A allocator_type;
+    typedef typename boost::allocator_size_type<A>::type size_type;
+    typedef typename boost::allocator_difference_type<A>::type difference_type;
+    typedef value_type& reference;
+    typedef const value_type& const_reference;
+    typedef typename boost::allocator_pointer<A>::type pointer;
+    typedef typename boost::allocator_const_pointer<A>::type const_pointer;
+    // ...
+};
+```
+
+In C++11 or above, aliases such as `boost::allocator_pointer_t<A>` can be used
+instead of `typename boost::allocator_pointer<A>::type`.
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class A>
+struct allocator_value_type;
+
+template<class A>
+using allocator_value_type_t = typename allocator_value_type<A>::type;
+
+template<class A>
+struct allocator_pointer;
+
+template<class A>
+using allocator_pointer_t = typename allocator_pointer<A>::type;
+
+template<class A>
+struct allocator_const_pointer;
+
+template<class A>
+using allocator_const_pointer_t = typename allocator_const_pointer<A>::type;
+
+template<class A>
+struct allocator_void_pointer;
+
+template<class A>
+using allocator_void_pointer_t = typename allocator_void_pointer<A>::type;
+
+template<class A>
+struct allocator_const_void_pointer;
+
+template<class A>
+using allocator_const_void_pointer_t =
+    typename allocator_const_void_pointer<A>::type;
+
+template<class A>
+struct allocator_difference_type;
+
+template<class A>
+using allocator_difference_type_t =
+    typename allocator_difference_type<A>::type;
+
+template<class A>
+struct allocator_size_type;
+
+template<class A>
+using allocator_size_type_t = typename allocator_size_type<A>::type;
+
+template<class A>
+struct allocator_propagate_on_container_copy_assignment;
+
+template<class A>
+using allocator_propagate_on_container_copy_assignment_t =
+    typename allocator_propagate_on_container_copy_assignment<A>::type;
+
+template<class A>
+struct allocator_propagate_on_container_move_assignment;
+
+template<class A>
+using allocator_propagate_on_container_move_assignment_t =
+    typename allocator_propagate_on_container_move_assignment<A>::type;
+
+template<class A>
+struct allocator_propagate_on_container_swap;
+
+template<class A>
+using allocator_propagate_on_container_swap_t =
+    typename allocator_propagate_on_container_swap<A>::type;
+
+template<class A>
+struct allocator_is_always_equal;
+
+template<class A>
+using allocator_is_always_equal_t =
+    typename allocator_is_always_equal<A>::type;
+
+template<class A, class T>
+struct allocator_rebind;
+
+template<class A, class T>
+using allocator_rebind_t = typename allocator_rebind<A, T>::type;
+
+template<class A>
+allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n);
+
+template<class A>
+allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n,
+    allocator_const_void_pointer_t<A> h);
+
+template<class A>
+void allocator_deallocate(A& a, allocator_pointer_t<A> p,
+    allocator_size_type_t<A> n);
+
+template<class A, class T, class... Args>
+void allocator_construct(A& a, T* p, Args&&... args);
+
+template<class A, class T>
+void allocator_destroy(A& a, T* p);
+
+template<class A>
+allocator_size_type_t<A> allocator_max_size(const A& a);
+
+template<class A>
+A allocator_select_on_container_copy_construction(const A& a);
+
+} // boost
+```
+
+[section Types]
+
+[variablelist
+[[`template<class A> struct allocator_value_type;`]
+[The member `type` is `A::value_type`.]]
+[[`template<class A> struct allocator_pointer;`]
+[The member `type` is `A::pointer` if valid, otherwise `A::value_type*`.]]
+[[`template<class A> struct allocator_const_pointer;`]
+[The member `type` is `A::const_pointer` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::rebind<const
+allocator_value_type_t<A> >`.]]
+[[`template<class A> struct allocator_void_pointer;`]
+[The member `type` is `A::void_pointer` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::rebind<void>`.]]
+[[`template<class A> struct allocator_const_void_pointer;`]
+[The member `type` is `A::const_void_pointer` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::rebind<const void>`.]]
+[[`template<class A> struct allocator_difference_type;`]
+[The member `type` is `A::difference_type` if valid, otherwise
+`pointer_traits<allocator_pointer_t<A> >::difference_type`.]]
+[[`template<class A> struct allocator_size_type;`]
+[The member `type` is `A::size_type` if valid, otherwise
+`std::make_unsigned_t<allocator_difference_type_t<A> >`.]]
+[[`template<class A> struct allocator_propagate_on_container_copy_assignment;`]
+[The member `type` is `A::propagate_on_container_copy_assignment` if valid,
+otherwise `std::false_type`.]]
+[[`template<class A> struct allocator_propagate_on_container_move_assignment;`]
+[The member `type` is `A::propagate_on_container_move_assignment` if valid,
+otherwise `std::false_type`.]]
+[[`template<class A> struct allocator_propagate_on_container_swap;`]
+[The member `type` is `A::propagate_on_container_swap` if valid, otherwise
+`std::false_type`.]]
+[[`template<class A> struct allocator_is_always_equal;`]
+[The member `type` is `A::is_always_equal` if valid, otherwise
+`std::is_empty<A>::type`.]]
+[[`template<class A, class T> struct allocator_rebind;`]
+[The member `type` is `A::rebind<T>::other` if valid, otherwise `A<T, Args>`
+if this `A` is `A<U, Args>`.]]]
+
+[endsect]
+
+[section Functions]
+
+[variablelist
+[[`template<class A>
+allocator_pointer_t<A> allocator_allocate(A& a, allocator_size_type_t<A> n);`]
+[Calls `a.allocate(n)`.]]
+[[`template<class A> allocator_pointer_t<A> allocator_allocate(A& a,
+allocator_size_type_t<A> n, allocator_const_void_pointer_t<A> hint);`]
+[Calls `a.allocate(n, hint)` if valid, otherwise calls `a.allocate(n)`.]]
+[[`template<class A> void allocator_deallocate(A& a, allocator_pointer_t<A> p,
+allocator_size_type_t<A> n);`]
+[Calls `a.deallocate(p, n)`.]]
+[[`template<class A, class T, class... Args>
+void allocator_construct(A& a, T*p, Args&&... args);`]
+[Calls `a.construct(p, std::forward<Args>(args)...)` if valid, otherwise calls
+`::new(static_cast<void*>(p)) T(std::forward<Args>(args)...)`.]]
+[[`template<class A, class T> void allocator_destroy(A& a, T* p);`]
+[Calls `a.destroy(p)` if valid, otherwise calls `p->~T()`.]]
+[[`template<class A> allocator_size_type_t<A> allocator_max_size(const A& a);`]
+[Returns `a.max_size()` if valid, otherwise returns
+`std::numeric_limits<allocator_size_type_t<A> >::max() /
+sizeof(A::value_type)`.]]
+[[`template<class A> A allocator_select_on_container_copy_construction(const
+A& a);`]
+[Returns `a.select_on_container_copy_construction()` if valid, otherwise
+returns `a`.]]]
+
+[endsect]
+
+[endsect]
+
+[section Acknowledgments]
+
+Glen Fernandes implemented the allocator access utilities.
+
+[endsect]
+
+[endsect]

doc/core.qbk

@@ -39,18 +39,24 @@ criteria for inclusion is that the utility component be:
 [endsect]
 
 [include addressof.qbk]
+[include allocator_access.qbk]
+[include alloc_construct.qbk]
 [include checked_delete.qbk]
+[include default_allocator.qbk]
 [include demangle.qbk]
 [include empty_value.qbk]
 [include enable_if.qbk]
 [include exchange.qbk]
 [include explicit_operator_bool.qbk]
+[include first_scalar.qbk]
 [include ignore_unused.qbk]
 [include is_same.qbk]
 [include lightweight_test.qbk]
 [include no_exceptions_support.qbk]
+[include noinit_adaptor.qbk]
 [include noncopyable.qbk]
 [include null_deleter.qbk]
+[include nvp.qbk]
 [include pointer_traits.qbk]
 [include quick_exit.qbk]
 [include ref.qbk]
@@ -58,3 +64,4 @@ criteria for inclusion is that the utility component be:
 [include swap.qbk]
 [include typeinfo.qbk]
 [include uncaught_exceptions.qbk]
+[include use_default.qbk]

doc/default_allocator.qbk

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

doc/empty_value.qbk

@@ -90,13 +90,15 @@ public:
     empty_value() = default;
 
     template<class... Args>
-    explicit empty_value(empty_init_t, Args&&... args);
+    empty_value(empty_init_t, Args&&... args);
 
     const T& get() const noexcept;
 
     T& get() noexcept;
 };
 
+inline constexpr empty_init_t empty_init{ };
+
 } /* boost */
 ```
 
@@ -111,7 +113,8 @@ public:
 
 [section Member types]
 
-[variablelist [[`type`][The template parameter `T`]]]
+[variablelist
+[[`type`][The template parameter `T`]]]
 
 [endsect]
 

doc/exchange.qbk

@@ -18,7 +18,8 @@ Distributed under the Boost Software License, Version 1.0.
 
 The header <boost/core/exchange.hpp> provides the function template
 `boost::exchange` which is an implementation of the `std::exchange`
-function introduced in C++14.
+function introduced in C++14. `boost::exchange(o, v)` replaces the
+value of `o` with `v` and returns the old value of `o`.
 
 [endsect]
 

doc/first_scalar.qbk

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

doc/lightweight_test.qbk

@@ -1,7 +1,7 @@
 [/
   Copyright 2010, 2011 Beman Dawes
   Copyright 2013 Ion Gaztanaga
-  Copyright 2014, 2017 Peter Dimov
+  Copyright 2014-2019 Peter Dimov
   Copyright 2017 Kohei Takahashi
 
   Distributed under the Boost Software License, Version 1.0.
@@ -43,9 +43,11 @@ When using `lightweight_test.hpp`, *do not forget* to
 #define BOOST_TEST_GE(expr1, expr2) /*unspecified*/
 #define BOOST_TEST_CSTR_EQ(expr1, expr2) /*unspecified*/
 #define BOOST_TEST_CSTR_NE(expr1, expr2) /*unspecified*/
+#define BOOST_TEST_WITH(expr1, expr2, pred) /*unspecified*/
 #define BOOST_TEST_ALL_EQ(begin1, end1, begin2, end2) /* unspecified */
 #define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) /* unspecified */
 #define BOOST_TEST_THROWS(expr, excep) /*unspecified*/
+#define BOOST_TEST_NO_THROW(expr) /*unspecified*/
 
 namespace boost
 {
@@ -174,6 +176,17 @@ Specialization of `BOOST_TEST_NE` which interprets `expr1` and `expr2` as pointe
 
 [endsect]
 
+[section BOOST_TEST_WITH]
+
+``
+BOOST_TEST_WITH(expr1, expr2, pred)
+``
+
+If `pred(expr1, expr2)` is not true increases the error count and outputs a
+message containing both expressions.
+
+[endsect]
+
 [section BOOST_TEST_ALL_EQ]
 
 ``
@@ -209,6 +222,20 @@ nothing and `expr` is not evaluated.
 
 [endsect]
 
+[section BOOST_TEST_NO_THROW]
+
+``
+BOOST_TEST_NO_THROW(expr)
+``
+
+If `BOOST_NO_EXCEPTIONS` is *not* defined and if `expr` throws an exception,
+increases the error count and outputs a message containing the expression
+and (if possible) the exception message.
+
+If `BOOST_NO_EXCEPTIONS` is defined, `expr` is evaluated.
+
+[endsect]
+
 [section report_errors]
 
 ``
@@ -253,6 +280,7 @@ return a boolean value.
 ``
 #define BOOST_TEST_TRAIT_TRUE((Trait)) /*unspecified*/
 #define BOOST_TEST_TRAIT_FALSE((Trait)) /*unspecified*/
+#define BOOST_TEST_TRAIT_SAME(Type1, Type2) /*unspecified*/
 ``
 
 [endsect]
@@ -280,6 +308,20 @@ message containing `Trait`. Note the double set of parentheses.
 
 [endsect]
 
+[section BOOST_TEST_TRAIT_SAME]
+
+``
+BOOST_TEST_TRAIT_SAME(Type1, Type2)
+``
+
+If the two types are not the same, increases the error count and outputs a
+message containing them. This macro requires that the compiler supports
+variadic macros and `__VA_ARGS__`. (Note that unlike `BOOST_TEST_TRAIT_TRUE`
+and `BOOST_TEST_TRAIT_FALSE`, this macro only requires a single set of
+parentheses.)
+
+[endsect]
+
 [section Example]
 
 ``
@@ -297,6 +339,8 @@ int main()
 {
     BOOST_TEST_TRAIT_TRUE(( is_same<X<int, long>::type, int> ));
 
+    BOOST_TEST_TRAIT_SAME( X<int, long>::type, int );
+
     return boost::report_errors();
 }
 ``

doc/noinit_adaptor.qbk

@@ -0,0 +1,163 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:noinit_adaptor noinit_adaptor]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/noinit_adaptor.hpp> provides the class
+template `boost::noinit_adaptor` that converts any allocator into
+one whose `construct(ptr)` performs default initialization via placement new,
+and whose `destroy(ptr)` invokes `value_type` destructor directly.
+
+[endsect]
+
+[section Examples]
+
+The following example shows use of this allocator adaptor to achieve default
+initialization of elements of a trivial type, which are later assigned values.
+
+```
+#include <boost/core/noinit_adaptor.hpp>
+#include <numeric>
+#include <vector>
+
+int main()
+{
+    std::vector<int, boost::noinit_adaptor<std::allocator<int> > > v(5);
+    std::iota(v.begin(), v.end(), 1);
+}
+```
+
+The `allocate_shared_noinit` function templates are now implemented simply
+using `allocate_shared` with `noinit_adaptor`.
+
+```
+template<class T, class A>
+enable_if_t<is_unbounded_array_v<T>, shared_ptr<T> >
+allocate_shared_noinit(const A& a, size_t n)
+{
+    return allocate_shared<T>(boost::noinit_adapt(a), n);
+}
+
+template<class T, class A>
+enable_if_t<!is_unbounded_array_v<T>, shared_ptr<T> >
+allocate_shared_noinit(const A& a)
+{
+    return allocate_shared<T>(boost::noinit_adapt(a));
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class A>
+struct noinit_adaptor
+    : A {
+    template<class U>
+    struct rebind {
+        typedef noinit_adaptor<allocator_rebind_t<A, U> > other;
+    };
+
+    noinit_adaptor() noexcept;
+
+    template<class U>
+    noinit_adaptor(U&& u) noexcept;
+
+    template<class U>
+    noinit_adaptor(const noinit_adaptor<U>& u) noexcept;
+
+    template<class U>
+    void construct(U* p);
+
+    template<class U>
+    void destroy(U* p);
+};
+
+template<class T, class U>
+bool operator==(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) noexcept;
+
+template<class T, class U>
+bool operator!=(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) noexcept;
+
+template<class A>
+noinit_adaptor<A> noinit_adapt(const A& a) noexcept;
+
+} /* boost */
+```
+
+[section Constructors]
+
+[variablelist
+[[`noinit_adaptor() noexcept;`]
+[[variablelist
+[[Effects][Value initializes the A base class.]]]]]
+[[`template<class U> noinit_adaptor(U&& u) noexcept;`]
+[[variablelist
+[[Requires][`A` shall be constructible from `U`.]]
+[[Effects][Initializes the `A` base class with `std::forward<U>(u)`.]]]]]
+[[`template<class U> noinit_adaptor(const noinit_adaptor<U>& u) noexcept;`]
+[[variablelist
+[[Requires][`A` shall be constructible from `U`.]]
+[[Effects][Initializes the `A` base class with
+`static_cast<const A&>(u)`.]]]]]]
+
+[endsect]
+
+[section Member functions]
+
+[variablelist
+[[`template<class U> void construct(U* p);`]
+[[variablelist
+[[Effects][`::new((void*)p) U`.]]]]]
+[[`template<class U> void destroy(U* p);`]
+[[variablelist
+[[Effects][`p->~U()`.]]]]]]
+
+[endsect]
+
+[section Operators]
+
+[variablelist
+[[`template<class T, class U> constexpr bool
+operator==(const noinit_adaptor<T>& lhs,
+const noinit_adaptor<U>& rhs) noexcept;`]
+[[variablelist
+[[Returns][`static_cast<const T&>(lhs) == static_cast<const U&>(rhs)`.]]]]]
+[[`template<class T, class U> constexpr bool
+operator!=(const noinit_adaptor<T>& lhs,
+const noinit_adaptor<U>& rhs) noexcept;`]
+[[variablelist
+[[Returns][`!(lhs == rhs)`.]]]]]]
+
+[endsect]
+
+[section Free functions]
+
+[variablelist
+[[`template<class A> noinit_adaptor<A> noinit_adapt(const A& a) noexcept;`]
+[[variablelist
+[[Returns][`noinit_adaptor<A>(a)`.]]]]]]
+
+[endsect]
+
+[endsect]
+
+[endsect]

doc/nvp.qbk

@@ -0,0 +1,108 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:nvp nvp]
+
+[section Overview]
+
+The header <boost/core/nvp.hpp> provides the class template `boost::nvp` that
+pairs a name (`const char*`) with the address of a value (`T*`). It is the new
+implementation of the NVP type previously provided by the Boost Serialization
+library. This type now lives in the Core library so that other Boost libraries
+can support named value serialization without taking a dependency on the
+Serialization library.
+
+[endsect]
+
+[section Examples]
+
+The following snippet shows use in a member serialize function:
+
+```
+template<class A>
+void serialize(A& archive, unsigned)
+{
+    archive & boost::make_nvp("x", x_) & boost::make_nvp("y", y_);
+}
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+template<class T>
+class nvp {
+public:
+    nvp(const char* name, T& value) noexcept;
+
+    const char* name() const noexcept;
+
+    T& value() const noexcept;
+
+    const T& const_value() const noexcept;
+};
+
+template<class T>
+const nvp<T> make_nvp(const char* name, T& value) noexcept;
+
+} /* boost */
+
+#define BOOST_NVP(object) ``['see below]``
+```
+
+[section Constructors]
+
+[variablelist
+[[`nvp(const char* name, T& value) noexcept;`]
+[Initializes the stored name pointer with `name` and the value pointer with
+`addressof(value)`.]]]
+
+[endsect]
+
+[section Members]
+
+[variablelist
+[[`const char* name() const noexcept;`]
+[Returns a pointer to the name.]]
+[[`T& value() const noexcept;`]
+[Returns a reference to the value.]]
+[[`const T& const_value() const noexcept;`]
+[Returns a reference to the value.]]]
+
+[endsect]
+
+[section Functions]
+
+[variablelist
+[[`template<class T> const nvp<T> make_nvp(const char* name, T& value)
+noexcept;`]
+[Returns `nvp<T>(name, value)`.]]]
+
+[endsect]
+
+[section Macros]
+
+[variablelist
+[[`#define BOOST_NVP(object) see below`]
+[Expands to `boost::make_nvp(BOOST_STRINGIZE(object), object)`.]]]
+
+[endsect]
+
+[endsect]
+
+[section History]
+
+Robert Ramey originally implemented NVP in the Serialization library. Glen
+Fernandes implemented this new (but compatible) version in the Core library.
+
+[endsect]
+
+[endsect]

doc/pointer_traits.qbk

@@ -109,7 +109,7 @@ namespace boost {
 [[Remark]
 [If `element_type` is a void type, the type of `v` is unspecified; otherwise,
   it is `element_type&`.]]
-[[Returns] [`addressof(v)`.]]]]]]
+[[Returns][`addressof(v)`.]]]]]]
 
 [endsect]
 
@@ -131,9 +131,11 @@ namespace boost {
 
 [variablelist
 [[`template<class T> constexpr T* to_address(T* v) noexcept;`]
-[[variablelist [[Returns] [`v`.]]]]]
+[[variablelist
+[[Returns][`v`.]]]]]
 [[`template<class T> auto to_address(const T& v) noexcept;`]
-[[variablelist [[Returns] [`pointer_traits<T>::to_address(v)` if that
+[[variablelist
+[[Returns][`pointer_traits<T>::to_address(v)` if that
   expression is well-formed, otherwise `to_address(v.operator->())`.]]]]]]
 
 [endsect]

doc/scoped_enum.qbk

@@ -67,9 +67,9 @@ The enumeration can be forward declared:
 
     BOOST_SCOPED_ENUM_FORWARD_DECLARE(future_errc);
 
-There are however some limitations. First, the emulated scoped enum is not a C++ enum, so `is_enum< future_errc >` will be `false_type`.
+There are however some limitations. The emulated scoped enum is not a C++ enum, so `is_enum< future_errc >` will be `false_type`.
 
-Second, the emulated scoped enum can not be used in switch nor in template arguments. For these cases the user needs to use some helpers. Instead of
+The emulated scoped enum can not be used in switch nor in template arguments. For these cases the user needs to use some helpers. Instead of
 
     switch (ev)
     {
@@ -99,10 +99,29 @@ use
     {
     };
 
-Lastly, explicit conversion to the underlying type should be performed with `boost::underlying_cast` instead of `static_cast`:
+Explicit conversion to the underlying type should be performed with `boost::underlying_cast` instead of `static_cast`:
 
     unsigned int val = boost::underlying_cast< unsigned int >(ev);
 
+In C++03, scoped enums behave differently in case of calling an overloaded function when one overload takes a scoped enum as a parameter, and the other takes a parameter of an integral type. Consider the following code:
+
+    enum enum_regular { REGULAR_A, REGULAR_B };
+
+    BOOST_SCOPED_ENUM_DECLARE_BEGIN(enum_scoped)
+    {
+        a, b
+    }
+    BOOST_SCOPED_ENUM_DECLARE_END(enum_scoped)
+
+    void regular_or_int(enum_regular); // (1)
+    void regular_or_int(int);          // (2)
+    void scoped_or_int(enum_scoped);   // (3)
+    void scoped_or_int(int);           // (4)
+
+    regular_or_int(REGULAR_A);                  // calls (1) in C++03 and C++11
+    scoped_or_int(enum_scoped::a);              // calls (3) in C++11 but (4) in C++03!
+    scoped_or_int(enum_scoped(enum_scoped::a)); // calls (3) in C++03 and C++11
+
 Here is usage example:
 
     BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(algae, char)

doc/use_default.qbk

@@ -0,0 +1,47 @@
+[/
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+]
+
+[section:use_default use_default]
+
+[section Overview]
+
+The header <boost/core/use_default.hpp> provides the type `boost::use_default`
+which is used by other Boost libraries as a sentinel type in a templates to
+indicate defaults.
+
+[endsect]
+
+[section Example]
+
+```
+template<class Derived, class Base,
+   class Value = boost::use_default,
+   class CategoryOrTraversal = boost::use_default,
+   class Reference = boost::use_default,
+   class Difference = boost::use_default>
+class iterator_adaptor;
+
+template<class Value>
+class node_iterator
+    : public iterator_adaptor<node_iterator<Value>, Value*,
+        boost::use_default, boost::forward_traversal_tag>;
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+  struct use_default { };
+}
+```
+
+[endsect]
+
+[endsect]

include/boost/core/addressof.hpp

@@ -125,7 +125,7 @@ template<class T>
 BOOST_FORCEINLINE T*
 addressof(T& o) BOOST_NOEXCEPT
 {
-#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x610)) || \
+#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x610)) || \
     BOOST_WORKAROUND(__SUNPRO_CC, <= 0x5120)
     return boost::detail::addrof<T>::get(o, 0);
 #else
@@ -151,7 +151,7 @@ addressof(T (&o)[N]) BOOST_NOEXCEPT
 }
 #endif
 
-#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
 template<class T, std::size_t N>
 BOOST_FORCEINLINE
 T (*addressof(T (&o)[N]) BOOST_NOEXCEPT)[N]

include/boost/core/alloc_construct.hpp

@@ -0,0 +1,169 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_ALLOC_CONSTRUCT_HPP
+#define BOOST_CORE_ALLOC_CONSTRUCT_HPP
+
+#include <boost/core/noinit_adaptor.hpp>
+
+namespace boost {
+
+template<class A, class T>
+inline void
+alloc_destroy(A& a, T* p)
+{
+    boost::allocator_destroy(a, p);
+}
+
+template<class A, class T>
+inline void
+alloc_destroy_n(A& a, T* p, std::size_t n)
+{
+    while (n > 0) {
+        boost::allocator_destroy(a, p + --n);
+    }
+}
+
+template<class A, class T>
+inline void
+alloc_destroy(noinit_adaptor<A>&, T* p)
+{
+    p->~T();
+}
+
+template<class A, class T>
+inline void
+alloc_destroy_n(noinit_adaptor<A>&, T* p, std::size_t n)
+{
+    while (n > 0) {
+        p[--n].~T();
+    }
+}
+
+namespace detail {
+
+template<class A, class T>
+class alloc_destroyer {
+public:
+    alloc_destroyer(A& a, T* p) BOOST_NOEXCEPT
+        : a_(a),
+          p_(p),
+          n_(0) { }
+
+    ~alloc_destroyer() {
+        boost::alloc_destroy_n(a_, p_, n_);
+    }
+
+    std::size_t& size() BOOST_NOEXCEPT {
+        return n_;
+    }
+
+private:
+    alloc_destroyer(const alloc_destroyer&);
+    alloc_destroyer& operator=(const alloc_destroyer&);
+
+    A& a_;
+    T* p_;
+    std::size_t n_;
+};
+
+} /* detail */
+
+template<class A, class T>
+inline void
+alloc_construct(A& a, T* p)
+{
+    boost::allocator_construct(a, p);
+}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<class A, class T, class U, class... V>
+inline void
+alloc_construct(A& a, T* p, U&& u, V&&... v)
+{
+    boost::allocator_construct(a, p, std::forward<U>(u),
+        std::forward<V>(v)...);
+}
+#else
+template<class A, class T, class U>
+inline void
+alloc_construct(A& a, T* p, U&& u)
+{
+    boost::allocator_construct(a, p, std::forward<U>(u));
+}
+#endif
+#else
+template<class A, class T, class U>
+inline void
+alloc_construct(A& a, T* p, const U& u)
+{
+    boost::allocator_construct(a, p, u);
+}
+
+template<class A, class T, class U>
+inline void
+alloc_construct(A& a, T* p, U& u)
+{
+    boost::allocator_construct(a, p, u);
+}
+#endif
+
+template<class A, class T>
+inline void
+alloc_construct_n(A& a, T* p, std::size_t n)
+{
+    detail::alloc_destroyer<A, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; ++i) {
+        boost::allocator_construct(a, p + i);
+    }
+    hold.size() = 0;
+}
+
+template<class A, class T>
+inline void
+alloc_construct_n(A& a, T* p, std::size_t n, const T* l, std::size_t m)
+{
+    detail::alloc_destroyer<A, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; ++i) {
+        boost::allocator_construct(a, p + i, l[i % m]);
+    }
+    hold.size() = 0;
+}
+
+template<class A, class T, class I>
+inline void
+alloc_construct_n(A& a, T* p, std::size_t n, I b)
+{
+    detail::alloc_destroyer<A, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; void(++i), void(++b)) {
+        boost::allocator_construct(a, p + i, *b);
+    }
+    hold.size() = 0;
+}
+
+template<class A, class T>
+inline void
+alloc_construct(noinit_adaptor<A>&, T* p)
+{
+    ::new(static_cast<void*>(p)) T;
+}
+
+template<class A, class T>
+inline void
+alloc_construct_n(noinit_adaptor<A>& a, T* p, std::size_t n)
+{
+    detail::alloc_destroyer<noinit_adaptor<A>, T> hold(a, p);
+    for (std::size_t& i = hold.size(); i < n; ++i) {
+        ::new(static_cast<void*>(p + i)) T;
+    }
+    hold.size() = 0;
+}
+
+} /* boost */
+
+#endif

include/boost/core/allocator_access.hpp

@@ -0,0 +1,633 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_ALLOCATOR_ACCESS_HPP
+#define BOOST_CORE_ALLOCATOR_ACCESS_HPP
+
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+#include <boost/core/pointer_traits.hpp>
+#if !defined(BOOST_MSVC)
+#include <limits>
+#else
+#include <memory>
+#endif
+#include <type_traits>
+#endif
+#include <new>
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#include <utility>
+#endif
+
+namespace boost {
+namespace detail {
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+struct alloc_false {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+#else
+template<class>
+struct alloc_void {
+    typedef void type;
+};
+#endif
+
+} /* detail */
+
+template<class A>
+struct allocator_value_type {
+    typedef typename A::value_type type;
+};
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_pointer {
+    typedef typename A::pointer type;
+};
+#elif defined(BOOST_MSVC)
+template<class A>
+struct allocator_pointer {
+    typedef typename std::allocator_traits<A>::pointer type;
+};
+#else
+template<class A, class = void>
+struct allocator_pointer {
+    typedef typename A::value_type* type;
+};
+
+template<class A>
+struct allocator_pointer<A,
+    typename detail::alloc_void<typename A::pointer>::type> {
+    typedef typename A::pointer type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_const_pointer {
+    typedef typename A::const_pointer type;
+};
+#elif defined(BOOST_MSVC)
+template<class A>
+struct allocator_const_pointer {
+    typedef typename std::allocator_traits<A>::const_pointer type;
+};
+#else
+template<class A, class = void>
+struct allocator_const_pointer {
+    typedef typename pointer_traits<typename
+        allocator_pointer<A>::type>::template
+            rebind_to<const typename A::value_type>::type type;
+};
+
+template<class A>
+struct allocator_const_pointer<A,
+    typename detail::alloc_void<typename A::const_pointer>::type> {
+    typedef typename A::const_pointer type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_void_pointer {
+    typedef typename A::template rebind<void>::other::pointer type;
+};
+#else
+template<class A, class = void>
+struct allocator_void_pointer {
+     typedef typename pointer_traits<typename
+        allocator_pointer<A>::type>::template
+            rebind_to<void>::type type;
+};
+
+template<class A>
+struct allocator_void_pointer<A,
+    typename detail::alloc_void<typename A::void_pointer>::type> {
+    typedef typename A::void_pointer type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_const_void_pointer {
+    typedef typename A::template rebind<void>::other::const_pointer type;
+};
+#else
+template<class A, class = void>
+struct allocator_const_void_pointer {
+     typedef typename pointer_traits<typename
+        allocator_pointer<A>::type>::template
+            rebind_to<const void>::type type;
+};
+
+template<class A>
+struct allocator_const_void_pointer<A,
+    typename detail::alloc_void<typename A::const_void_pointer>::type> {
+    typedef typename A::const_void_pointer type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_difference_type {
+    typedef typename A::difference_type type;
+};
+#elif defined(BOOST_MSVC)
+template<class A>
+struct allocator_difference_type {
+    typedef typename std::allocator_traits<A>::difference_type type;
+};
+#else
+template<class A, class = void>
+struct allocator_difference_type {
+    typedef typename pointer_traits<typename
+        allocator_pointer<A>::type>::difference_type type;
+};
+
+template<class A>
+struct allocator_difference_type<A,
+    typename detail::alloc_void<typename A::difference_type>::type> {
+    typedef typename A::difference_type type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_size_type {
+    typedef typename A::size_type type;
+};
+#elif defined(BOOST_MSVC)
+template<class A>
+struct allocator_size_type {
+    typedef typename std::allocator_traits<A>::size_type type;
+};
+#else
+template<class A, class = void>
+struct allocator_size_type {
+    typedef typename std::make_unsigned<typename
+        allocator_difference_type<A>::type>::type type;
+};
+
+template<class A>
+struct allocator_size_type<A,
+    typename detail::alloc_void<typename A::size_type>::type> {
+    typedef typename A::size_type type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_propagate_on_container_copy_assignment {
+    typedef detail::alloc_false type;
+};
+#else
+template<class A, class = void>
+struct allocator_propagate_on_container_copy_assignment {
+    typedef std::false_type type;
+};
+
+template<class A>
+struct allocator_propagate_on_container_copy_assignment<A,
+    typename detail::alloc_void<typename
+        A::propagate_on_container_copy_assignment>::type> {
+    typedef typename A::propagate_on_container_copy_assignment type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_propagate_on_container_move_assignment {
+    typedef detail::alloc_false type;
+};
+#else
+template<class A, class = void>
+struct allocator_propagate_on_container_move_assignment {
+    typedef std::false_type type;
+};
+
+template<class A>
+struct allocator_propagate_on_container_move_assignment<A,
+    typename detail::alloc_void<typename
+        A::propagate_on_container_move_assignment>::type> {
+    typedef typename A::propagate_on_container_move_assignment type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_propagate_on_container_swap {
+    typedef detail::alloc_false type;
+};
+#else
+template<class A, class = void>
+struct allocator_propagate_on_container_swap {
+    typedef std::false_type type;
+};
+
+template<class A>
+struct allocator_propagate_on_container_swap<A,
+    typename detail::alloc_void<typename
+        A::propagate_on_container_swap>::type> {
+    typedef typename A::propagate_on_container_swap type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+struct allocator_is_always_equal {
+    typedef detail::alloc_false type;
+};
+#else
+template<class A, class = void>
+struct allocator_is_always_equal {
+    typedef typename std::is_empty<A>::type type;
+};
+
+template<class A>
+struct allocator_is_always_equal<A,
+    typename detail::alloc_void<typename A::is_always_equal>::type> {
+    typedef typename A::is_always_equal type;
+};
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A, class T>
+struct allocator_rebind {
+    typedef typename A::template rebind<T>::other type;
+};
+#elif defined(BOOST_MSVC)
+template<class A, class T>
+struct allocator_rebind {
+    typedef typename std::allocator_traits<A>::template rebind_alloc<T> type;
+};
+#else
+namespace detail {
+
+template<class, class>
+struct alloc_to { };
+
+template<template<class, class...> class A, class T, class U, class... V>
+struct alloc_to<A<U, V...>, T> {
+    typedef A<T, V...> type;
+};
+
+} /* detail */
+
+template<class A, class T, class = void>
+struct allocator_rebind {
+    typedef typename detail::alloc_to<A, T>::type type;
+};
+
+template<class A, class T>
+struct allocator_rebind<A, T,
+    typename detail::alloc_void<typename A::template rebind<T>::other>::type> {
+    typedef typename A::template rebind<T>::other type;
+};
+#endif
+
+template<class A>
+inline typename allocator_pointer<A>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n)
+{
+    return a.allocate(n);
+}
+
+template<class A>
+inline void
+allocator_deallocate(A& a, typename allocator_pointer<A>::type p,
+    typename allocator_size_type<A>::type n)
+{
+    a.deallocate(p, n);
+}
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+inline typename allocator_pointer<A>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n,
+    typename allocator_const_void_pointer<A>::type h)
+{
+    return a.allocate(n, h);
+}
+#elif defined(BOOST_MSVC)
+template<class A>
+inline typename allocator_pointer<A>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n,
+    typename allocator_const_void_pointer<A>::type h)
+{
+    return std::allocator_traits<A>::allocate(a, n, h);
+}
+#else
+namespace detail {
+
+template<class, class, class, class = void>
+struct alloc_has_allocate {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class A, class N, class H>
+struct alloc_has_allocate<A, N, H,
+    typename alloc_void<decltype(std::declval<A&>().allocate(std::declval<N>(),
+        std::declval<H>()))>::type> {
+    BOOST_STATIC_CONSTEXPR bool value = true;
+};
+
+} /* detail */
+
+template<class A>
+inline typename std::enable_if<detail::alloc_has_allocate<A,
+    typename allocator_size_type<A>::type,
+        typename allocator_const_void_pointer<A>::type>::value,
+            typename allocator_pointer<A>::type>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n,
+    typename allocator_const_void_pointer<A>::type h)
+{
+    return a.allocate(n, h);
+}
+
+template<class A>
+inline typename std::enable_if<!detail::alloc_has_allocate<A,
+    typename allocator_size_type<A>::type,
+        typename allocator_const_void_pointer<A>::type>::value,
+            typename allocator_pointer<A>::type>::type
+allocator_allocate(A& a, typename allocator_size_type<A>::type n,
+    typename allocator_const_void_pointer<A>::type)
+{
+    return a.allocate(n);
+}
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A, class T>
+inline void
+allocator_construct(A&, T* p)
+{
+    ::new((void*)p) T();
+}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<class A, class T, class V, class... Args>
+inline void
+allocator_construct(A&, T* p, V&& v, Args&&... args)
+{
+    ::new((void*)p) T(std::forward<V>(v), std::forward<Args>(args)...);
+}
+#else
+template<class A, class T, class V>
+inline void
+allocator_construct(A&, T* p, V&& v)
+{
+    ::new((void*)p) T(std::forward<V>(v));
+}
+#endif
+#else
+template<class A, class T, class V>
+inline void
+allocator_construct(A&, T* p, const V& v)
+{
+    ::new((void*)p) T(v);
+}
+
+template<class A, class T, class V>
+inline void
+allocator_construct(A&, T* p, V& v)
+{
+    ::new((void*)p) T(v);
+}
+#endif
+#elif defined(BOOST_MSVC)
+template<class A, class T, class... Args>
+inline void
+allocator_construct(A& a, T* p, Args&&... args)
+{
+    std::allocator_traits<A>::construct(a, p, std::forward<Args>(args)...);
+}
+#else
+namespace detail {
+
+template<class, class, class, class...>
+struct alloc_has_construct {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class A, class T, class... Args>
+struct alloc_has_construct<typename alloc_void<decltype(std::declval<A
+    &>().construct(std::declval<T*>(), std::declval<Args&&>()...))>::type,
+        A, T, Args...> {
+    BOOST_STATIC_CONSTEXPR bool value = true;
+};
+
+} /* detail */
+
+template<class A, class T, class... Args>
+inline typename std::enable_if<detail::alloc_has_construct<void, A, T,
+    Args...>::value>::type
+allocator_construct(A& a, T* p, Args&&... args)
+{
+    a.construct(p, std::forward<Args>(args)...);
+}
+
+template<class A, class T, class... Args>
+inline typename std::enable_if<!detail::alloc_has_construct<void, A, T,
+    Args...>::value>::type
+allocator_construct(A&, T* p, Args&&... args)
+{
+    ::new((void*)p) T(std::forward<Args>(args)...);
+}
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A, class T>
+inline void
+allocator_destroy(A&, T* p)
+{
+    p->~T();
+    (void)p;
+}
+#elif defined(BOOST_MSVC)
+template<class A, class T>
+inline void
+allocator_destroy(A& a, T* p)
+{
+    std::allocator_traits<A>::destroy(a, p);
+}
+#else
+namespace detail {
+
+template<class, class, class = void>
+struct alloc_has_destroy {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class A, class T>
+struct alloc_has_destroy<A, T,
+    typename alloc_void<decltype(std::declval<A
+        &>().destroy(std::declval<T*>()))>::type> {
+    BOOST_STATIC_CONSTEXPR bool value = true;
+};
+
+} /* detail */
+
+template<class A, class T>
+inline typename std::enable_if<detail::alloc_has_destroy<A, T>::value>::type
+allocator_destroy(A& a, T* p)
+{
+    a.destroy(p);
+}
+
+template<class A, class T>
+inline typename std::enable_if<!detail::alloc_has_destroy<A, T>::value>::type
+allocator_destroy(A&, T* p)
+{
+    p->~T();
+    (void)p;
+}
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+inline typename allocator_size_type<A>::type
+allocator_max_size(const A& a)
+{
+    return a.max_size();
+}
+#elif defined(BOOST_MSVC)
+template<class A>
+inline typename allocator_size_type<A>::type
+allocator_max_size(const A& a)
+{
+    return std::allocator_traits<A>::max_size(a);
+}
+#else
+namespace detail {
+
+template<class, class = void>
+struct alloc_has_max_size {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class A>
+struct alloc_has_max_size<A,
+    typename alloc_void<decltype(std::declval<const
+        A&>().max_size())>::type> {
+    BOOST_STATIC_CONSTEXPR bool value = true;
+};
+
+} /* detail */
+
+template<class A>
+inline typename std::enable_if<detail::alloc_has_max_size<A>::value,
+    typename allocator_size_type<A>::type>::type
+allocator_max_size(const A& a)
+{
+    return a.max_size();
+}
+
+template<class A>
+inline typename std::enable_if<!detail::alloc_has_max_size<A>::value,
+    typename allocator_size_type<A>::type>::type
+allocator_max_size(const A&)
+{
+    return (std::numeric_limits<typename
+        allocator_size_type<A>::type>::max)() / sizeof(typename A::value_type);
+}
+#endif
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class A>
+inline A
+allocator_select_on_container_copy_construction(const A& a)
+{
+    return a;
+}
+#elif defined(BOOST_MSVC)
+template<class A>
+inline A
+allocator_select_on_container_copy_construction(const A& a)
+{
+    return std::allocator_traits<A>::select_on_container_copy_construction(a);
+}
+#else
+namespace detail {
+
+template<class, class = void>
+struct alloc_has_soccc {
+    BOOST_STATIC_CONSTEXPR bool value = false;
+};
+
+template<class A>
+struct alloc_has_soccc<A,
+    typename alloc_void<decltype(std::declval<const
+        A&>().select_on_container_copy_construction())>::type> {
+    BOOST_STATIC_CONSTEXPR bool value = true;
+};
+
+} /* detail */
+
+template<class A>
+inline typename std::enable_if<detail::alloc_has_soccc<A>::value, A>::type
+allocator_select_on_container_copy_construction(const A& a)
+{
+    return a.select_on_container_copy_construction();
+}
+
+template<class A>
+inline typename std::enable_if<!detail::alloc_has_soccc<A>::value, A>::type
+allocator_select_on_container_copy_construction(const A& a)
+{
+    return a;
+}
+#endif
+
+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+template<class A>
+using allocator_value_type_t = typename allocator_value_type<A>::type;
+
+template<class A>
+using allocator_pointer_t = typename allocator_pointer<A>::type;
+
+template<class A>
+using allocator_const_pointer_t = typename allocator_const_pointer<A>::type;
+
+template<class A>
+using allocator_void_pointer_t = typename allocator_void_pointer<A>::type;
+
+template<class A>
+using allocator_const_void_pointer_t =
+    typename allocator_const_void_pointer<A>::type;
+
+template<class A>
+using allocator_difference_type_t =
+    typename allocator_difference_type<A>::type;
+
+template<class A>
+using allocator_size_type_t = typename allocator_size_type<A>::type;
+
+template<class A>
+using allocator_propagate_on_container_copy_assignment_t =
+    typename allocator_propagate_on_container_copy_assignment<A>::type;
+
+template<class A>
+using allocator_propagate_on_container_move_assignment_t =
+    typename allocator_propagate_on_container_move_assignment<A>::type;
+
+template<class A>
+using allocator_propagate_on_container_swap_t =
+    typename allocator_propagate_on_container_swap<A>::type;
+
+template<class A>
+using allocator_is_always_equal_t =
+    typename allocator_is_always_equal<A>::type;
+
+template<class A, class T>
+using allocator_rebind_t = typename allocator_rebind<A, T>::type;
+#endif
+
+} /* boost */
+
+#endif

include/boost/core/checked_delete.hpp

@@ -7,6 +7,8 @@
 # pragma once
 #endif
 
+#include <boost/config.hpp>
+
 //
 //  boost/checked_delete.hpp
 //
@@ -26,7 +28,7 @@ namespace boost
 
 // verify that types are complete for increased safety
 
-template<class T> inline void checked_delete(T * x)
+template<class T> inline void checked_delete(T * x) BOOST_NOEXCEPT
 {
     // intentionally complex - simplification causes regressions
     typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
@@ -34,7 +36,7 @@ template<class T> inline void checked_delete(T * x)
     delete x;
 }
 
-template<class T> inline void checked_array_delete(T * x)
+template<class T> inline void checked_array_delete(T * x) BOOST_NOEXCEPT
 {
     typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
     (void) sizeof(type_must_be_complete);
@@ -46,7 +48,7 @@ template<class T> struct checked_deleter
     typedef void result_type;
     typedef T * argument_type;
 
-    void operator()(T * x) const
+    void operator()(T * x) const BOOST_NOEXCEPT
     {
         // boost:: disables ADL
         boost::checked_delete(x);
@@ -58,7 +60,7 @@ template<class T> struct checked_array_deleter
     typedef void result_type;
     typedef T * argument_type;
 
-    void operator()(T * x) const
+    void operator()(T * x) const BOOST_NOEXCEPT
     {
         boost::checked_array_delete(x);
     }

include/boost/core/default_allocator.hpp

@@ -0,0 +1,148 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_DEFAULT_ALLOCATOR_HPP
+#define BOOST_CORE_DEFAULT_ALLOCATOR_HPP
+
+#include <boost/config.hpp>
+#include <new>
+
+namespace boost {
+
+#if defined(BOOST_NO_EXCEPTIONS)
+BOOST_NORETURN void throw_exception(const std::exception&);
+#endif
+
+namespace default_ {
+
+struct true_type {
+    typedef bool value_type;
+    typedef true_type type;
+
+    BOOST_STATIC_CONSTANT(bool, value = true);
+
+    BOOST_CONSTEXPR operator bool() const BOOST_NOEXCEPT {
+        return true;
+    }
+
+    BOOST_CONSTEXPR bool operator()() const BOOST_NOEXCEPT {
+        return true;
+    }
+};
+
+template<class T>
+struct add_reference {
+    typedef T& type;
+};
+
+template<>
+struct add_reference<void> {
+    typedef void type;
+};
+
+template<>
+struct add_reference<const void> {
+    typedef const void type;
+};
+
+template<class T>
+struct default_allocator {
+    typedef T value_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef typename add_reference<T>::type reference;
+    typedef typename add_reference<const T>::type const_reference;
+    typedef std::size_t size_type;
+    typedef std::ptrdiff_t difference_type;
+    typedef true_type propagate_on_container_move_assignment;
+    typedef true_type is_always_equal;
+
+    template<class U>
+    struct rebind {
+        typedef default_allocator<U> other;
+    };
+
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
+    default_allocator() = default;
+#else
+    BOOST_CONSTEXPR default_allocator() BOOST_NOEXCEPT { }
+#endif
+
+    template<class U>
+    BOOST_CONSTEXPR default_allocator(const default_allocator<U>&)
+        BOOST_NOEXCEPT { }
+
+    BOOST_CONSTEXPR std::size_t max_size() const BOOST_NOEXCEPT {
+        return static_cast<std::size_t>(-1) / (2 < sizeof(T) ? sizeof(T) : 2);
+    }
+
+#if !defined(BOOST_NO_EXCEPTIONS)
+    T* allocate(std::size_t n) {
+        if (n > max_size()) {
+            throw std::bad_alloc();
+        }
+        return static_cast<T*>(::operator new(sizeof(T) * n));
+    }
+
+    void deallocate(T* p, std::size_t) {
+        ::operator delete(p);
+    }
+#else
+    T* allocate(std::size_t n) {
+        if (n > max_size()) {
+            boost::throw_exception(std::bad_alloc());
+        }
+        void* p = ::operator new(sizeof(T) * n, std::nothrow);
+        if (!p) {
+            boost::throw_exception(std::bad_alloc());
+        }
+        return static_cast<T*>(p);
+    }
+
+    void deallocate(T* p, std::size_t) {
+        ::operator delete(p, std::nothrow);
+    }
+#endif
+
+#if (defined(BOOST_LIBSTDCXX_VERSION) && BOOST_LIBSTDCXX_VERSION < 60000) || \
+    defined(BOOST_NO_CXX11_ALLOCATOR)
+    template<class U, class V>
+    void construct(U* p, const V& v) {
+        ::new(p) U(v);
+    }
+
+    template<class U>
+    void destroy(U* p) {
+        p->~U();
+        (void)p;
+    }
+#endif
+};
+
+template<class T, class U>
+BOOST_CONSTEXPR inline bool
+operator==(const default_allocator<T>&,
+    const default_allocator<U>&) BOOST_NOEXCEPT
+{
+    return true;
+}
+
+template<class T, class U>
+BOOST_CONSTEXPR inline bool
+operator!=(const default_allocator<T>&,
+    const default_allocator<U>&) BOOST_NOEXCEPT
+{
+    return false;
+}
+
+} /* default_ */
+
+using default_::default_allocator;
+
+} /* boost */
+
+#endif

include/boost/core/empty_value.hpp

@@ -59,9 +59,9 @@ public:
 
 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-    template<class... Args>
-    explicit empty_value(boost::empty_init_t, Args&&... args)
-        : value_(std::forward<Args>(args)...) { }
+    template<class U, class... Args>
+    empty_value(boost::empty_init_t, U&& value, Args&&... args)
+        : value_(std::forward<U>(value), std::forward<Args>(args)...) { }
 #else
     template<class U>
     empty_value(boost::empty_init_t, U&& value)
@@ -71,6 +71,10 @@ public:
     template<class U>
     empty_value(boost::empty_init_t, const U& value)
         : value_(value) { }
+
+    template<class U>
+    empty_value(boost::empty_init_t, U& value)
+        : value_(value) { }
 #endif
 
     const T& get() const BOOST_NOEXCEPT {
@@ -103,9 +107,9 @@ public:
 
 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-    template<class... Args>
-    explicit empty_value(boost::empty_init_t, Args&&... args)
-        : T(std::forward<Args>(args)...) { }
+    template<class U, class... Args>
+    empty_value(boost::empty_init_t, U&& value, Args&&... args)
+        : T(std::forward<U>(value), std::forward<Args>(args)...) { }
 #else
     template<class U>
     empty_value(boost::empty_init_t, U&& value)
@@ -115,6 +119,10 @@ public:
     template<class U>
     empty_value(boost::empty_init_t, const U& value)
         : T(value) { }
+
+    template<class U>
+    empty_value(boost::empty_init_t, U& value)
+        : T(value) { }
 #endif
 
     const T& get() const BOOST_NOEXCEPT {
@@ -131,6 +139,8 @@ public:
 
 using empty_::empty_value;
 
+BOOST_INLINE_CONSTEXPR empty_init_t empty_init = empty_init_t();
+
 } /* boost */
 
 #endif

include/boost/core/first_scalar.hpp

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

include/boost/core/lightweight_test.hpp

@@ -22,14 +22,19 @@
 //  http://www.boost.org/LICENSE_1_0.txt
 //
 
-#include <boost/core/no_exceptions_support.hpp>
 #include <boost/current_function.hpp>
+#include <boost/config.hpp>
+#include <exception>
 #include <iostream>
 #include <iterator>
 #include <cstdlib>
 #include <cstring>
 #include <cstddef>
 
+#if defined(_MSC_VER) && defined(_CPPLIB_VER) && defined(_DEBUG)
+# include <crtdbg.h>
+#endif
+
 //  IDE's like Visual Studio perform better if output goes to std::cout or
 //  some other stream, so allow user to configure output stream:
 #ifndef BOOST_LIGHTWEIGHT_TEST_OSTREAM
@@ -48,7 +53,13 @@ public:
         : report_(false)
         , errors_(0) {
 #if defined(_MSC_VER) && (_MSC_VER > 1310)
+        // disable message boxes on assert(), abort()
         ::_set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
+#endif
+#if defined(_MSC_VER) && defined(_CPPLIB_VER) && defined(_DEBUG)
+        // disable message boxes on iterator debugging violations
+        _CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
+        _CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
 #endif
     }
 
@@ -83,12 +94,21 @@ inline int& test_errors()
     return test_results().errors();
 }
 
-inline void test_failed_impl(char const * expr, char const * file, int line, char const * function)
+inline bool test_impl(char const * expr, char const * file, int line, char const * function, bool v)
 {
-    BOOST_LIGHTWEIGHT_TEST_OSTREAM
-      << file << "(" << line << "): test '" << expr << "' failed in function '"
-      << function << "'" << std::endl;
-    ++test_results().errors();
+    if( v )
+    {
+        test_results();
+        return true;
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+          << file << "(" << line << "): test '" << expr << "' failed in function '"
+          << function << "'" << std::endl;
+        ++test_results().errors();
+        return false;
+    }
 }
 
 inline void error_impl(char const * msg, char const * file, int line, char const * function)
@@ -99,25 +119,41 @@ inline void error_impl(char const * msg, char const * file, int line, char const
     ++test_results().errors();
 }
 
-inline void throw_failed_impl(char const * excep, char const * file, int line, char const * function)
+inline void throw_failed_impl(const char* expr, char const * excep, char const * file, int line, char const * function)
 {
    BOOST_LIGHTWEIGHT_TEST_OSTREAM
-    << file << "(" << line << "): Exception '" << excep << "' not thrown in function '"
+    << file << "(" << line << "): expression '" << expr << "' did not throw exception '" << excep << "' in function '"
     << function << "'" << std::endl;
    ++test_results().errors();
 }
 
+inline void no_throw_failed_impl(const char* expr, const char* file, int line, const char* function)
+{
+    BOOST_LIGHTWEIGHT_TEST_OSTREAM
+        << file << "(" << line << "): expression '" << expr << "' threw an exception in function '"
+        << function << "'" << std::endl;
+   ++test_results().errors();
+}
+
+inline void no_throw_failed_impl(const char* expr, const char* what, const char* file, int line, const char* function)
+{
+    BOOST_LIGHTWEIGHT_TEST_OSTREAM
+        << file << "(" << line << "): expression '" << expr << "' threw an exception in function '"
+        << function << "': " << what << std::endl;
+   ++test_results().errors();
+}
+
 // In the comparisons below, it is possible that T and U are signed and unsigned integer types, which generates warnings in some compilers.
 // A cleaner fix would require common_type trait or some meta-programming, which would introduce a dependency on Boost.TypeTraits. To avoid
 // the dependency we just disable the warnings.
-#if defined(_MSC_VER)
-# pragma warning(push)
-# pragma warning(disable: 4389)
-#elif defined(__clang__) && defined(__has_warning)
+#if defined(__clang__) && defined(__has_warning)
 # if __has_warning("-Wsign-compare")
 #  pragma clang diagnostic push
 #  pragma clang diagnostic ignored "-Wsign-compare"
 # endif
+#elif defined(_MSC_VER)
+# pragma warning(push)
+# pragma warning(disable: 4389)
 #elif defined(__GNUC__) && !(defined(__INTEL_COMPILER) || defined(__ICL) || defined(__ICC) || defined(__ECC)) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 406
 # pragma GCC diagnostic push
 # pragma GCC diagnostic ignored "-Wsign-compare"
@@ -137,67 +173,111 @@ template<class T> inline const void* test_output_impl(T volatile* v) { return co
 inline const void* test_output_impl(std::nullptr_t) { return nullptr; }
 #endif
 
-struct lw_test_eq {
+// predicates
+
+struct lw_test_eq
+{
     template <typename T, typename U>
     bool operator()(const T& t, const U& u) const { return t == u; }
-    static const char* op() { return "=="; }
 };
 
-struct lw_test_ne {
+struct lw_test_ne
+{
     template <typename T, typename U>
     bool operator()(const T& t, const U& u) const { return t != u; }
-    static const char* op() { return "!="; }
 };
 
-struct lw_test_lt {
+struct lw_test_lt
+{
     template <typename T, typename U>
     bool operator()(const T& t, const U& u) const { return t < u; }
-    static const char* op() { return "<"; }
 };
 
-struct lw_test_le {
+struct lw_test_le
+{
     template <typename T, typename U>
     bool operator()(const T& t, const U& u) const { return t <= u; }
-    static const char* op() { return "<="; }
 };
 
-struct lw_test_gt {
+struct lw_test_gt
+{
     template <typename T, typename U>
     bool operator()(const T& t, const U& u) const { return t > u; }
-    static const char* op() { return ">"; }
 };
 
-struct lw_test_ge {
+struct lw_test_ge
+{
     template <typename T, typename U>
     bool operator()(const T& t, const U& u) const { return t >= u; }
-    static const char* op() { return ">="; }
 };
 
+// lwt_predicate_name
+
+template<class T> char const * lwt_predicate_name( T const& )
+{
+    return "~=";
+}
+
+inline char const * lwt_predicate_name( lw_test_eq const& )
+{
+    return "==";
+}
+
+inline char const * lwt_predicate_name( lw_test_ne const& )
+{
+    return "!=";
+}
+
+inline char const * lwt_predicate_name( lw_test_lt const& )
+{
+    return "<";
+}
+
+inline char const * lwt_predicate_name( lw_test_le const& )
+{
+    return "<=";
+}
+
+inline char const * lwt_predicate_name( lw_test_gt const& )
+{
+    return ">";
+}
+
+inline char const * lwt_predicate_name( lw_test_ge const& )
+{
+    return ">=";
+}
+
+//
+
 template<class BinaryPredicate, class T, class U>
-inline void test_with_impl(BinaryPredicate pred, char const * expr1, char const * expr2,
+inline bool test_with_impl(BinaryPredicate pred, char const * expr1, char const * expr2,
                            char const * file, int line, char const * function,
                            T const & t, U const & u)
 {
     if( pred(t, u) )
     {
         test_results();
+        return true;
     }
     else
     {
         BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " " << pred.op() << " " << expr2
-            << "' ('" << test_output_impl(t) << "' " << pred.op() << " '" << test_output_impl(u)
+            << file << "(" << line << "): test '" << expr1 << " " << lwt_predicate_name(pred) << " " << expr2
+            << "' ('" << test_output_impl(t) << "' " << lwt_predicate_name(pred) << " '" << test_output_impl(u)
             << "') failed in function '" << function << "'" << std::endl;
         ++test_results().errors();
+        return false;
     }
 }
 
-inline void test_cstr_eq_impl( char const * expr1, char const * expr2,
+inline bool test_cstr_eq_impl( char const * expr1, char const * expr2,
   char const * file, int line, char const * function, char const * const t, char const * const u )
 {
     if( std::strcmp(t, u) == 0 )
     {
         test_results();
+        return true;
     }
     else
     {
@@ -205,15 +285,17 @@ inline void test_cstr_eq_impl( char const * expr1, char const * expr2,
             << file << "(" << line << "): test '" << expr1 << " == " << expr2 << "' ('" << t
             << "' == '" << u << "') failed in function '" << function << "'" << std::endl;
         ++test_results().errors();
+        return false;
     }
 }
 
-inline void test_cstr_ne_impl( char const * expr1, char const * expr2,
+inline bool test_cstr_ne_impl( char const * expr1, char const * expr2,
   char const * file, int line, char const * function, char const * const t, char const * const u )
 {
     if( std::strcmp(t, u) != 0 )
     {
         test_results();
+        return true;
     }
     else
     {
@@ -221,11 +303,12 @@ inline void test_cstr_ne_impl( char const * expr1, char const * expr2,
             << file << "(" << line << "): test '" << expr1 << " != " << expr2 << "' ('" << t
             << "' != '" << u << "') failed in function '" << function << "'" << std::endl;
         ++test_results().errors();
+        return false;
     }
 }
 
 template<class FormattedOutputFunction, class InputIterator1, class InputIterator2>
-void test_all_eq_impl(FormattedOutputFunction& output,
+bool test_all_eq_impl(FormattedOutputFunction& output,
                       char const * file, int line, char const * function,
                       InputIterator1 first_begin, InputIterator1 first_end,
                       InputIterator2 second_begin, InputIterator2 second_end)
@@ -284,16 +367,18 @@ void test_all_eq_impl(FormattedOutputFunction& output,
     if (error_count == 0)
     {
         test_results();
+        return true;
     }
     else
     {
         output << std::endl;
         ++test_results().errors();
+        return false;
     }
 }
 
 template<class FormattedOutputFunction, class InputIterator1, class InputIterator2, typename BinaryPredicate>
-void test_all_with_impl(FormattedOutputFunction& output,
+bool test_all_with_impl(FormattedOutputFunction& output,
                         char const * file, int line, char const * function,
                         InputIterator1 first_begin, InputIterator1 first_end,
                         InputIterator2 second_begin, InputIterator2 second_end,
@@ -353,20 +438,22 @@ void test_all_with_impl(FormattedOutputFunction& output,
     if (error_count == 0)
     {
         test_results();
+        return true;
     }
     else
     {
         output << std::endl;
         ++test_results().errors();
+        return false;
     }
 }
 
-#if defined(_MSC_VER)
-# pragma warning(pop)
-#elif defined(__clang__) && defined(__has_warning)
+#if defined(__clang__) && defined(__has_warning)
 # if __has_warning("-Wsign-compare")
 #  pragma clang diagnostic pop
 # endif
+#elif defined(_MSC_VER)
+# pragma warning(pop)
 #elif defined(__GNUC__) && !(defined(__INTEL_COMPILER) || defined(__ICL) || defined(__ICC) || defined(__ECC)) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 406
 # pragma GCC diagnostic pop
 #endif
@@ -379,27 +466,31 @@ inline int report_errors()
     result.done();
 
     int errors = result.errors();
+
     if( errors == 0 )
     {
         BOOST_LIGHTWEIGHT_TEST_OSTREAM
           << "No errors detected." << std::endl;
-        return 0;
     }
     else
     {
         BOOST_LIGHTWEIGHT_TEST_OSTREAM
           << errors << " error" << (errors == 1? "": "s") << " detected." << std::endl;
-        return 1;
     }
+
+    // `return report_errors();` from main only supports 8 bit exit codes
+    return errors < 256? errors: 255;
 }
 
 } // namespace boost
 
-#define BOOST_TEST(expr) ((expr)? (void)::boost::detail::test_results(): ::boost::detail::test_failed_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION))
+#define BOOST_TEST(expr) ( ::boost::detail::test_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, (expr)? true: false) )
 #define BOOST_TEST_NOT(expr) BOOST_TEST(!(expr))
 
 #define BOOST_ERROR(msg) ( ::boost::detail::error_impl(msg, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
 
+#define BOOST_TEST_WITH(expr1,expr2,predicate) ( ::boost::detail::test_with_impl(predicate, #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+
 #define BOOST_TEST_EQ(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_eq(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
 #define BOOST_TEST_NE(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_ne(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
 
@@ -415,22 +506,38 @@ inline int report_errors()
 #define BOOST_TEST_ALL_WITH(begin1, end1, begin2, end2, predicate) ( ::boost::detail::test_all_with_impl(BOOST_LIGHTWEIGHT_TEST_OSTREAM, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, begin1, end1, begin2, end2, predicate) )
 
 #ifndef BOOST_NO_EXCEPTIONS
-   #define BOOST_TEST_THROWS( EXPR, EXCEP )                    \
-      try {                                                    \
-         EXPR;                                                 \
-         ::boost::detail::throw_failed_impl                    \
-         (#EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
-      }                                                        \
-      catch(EXCEP const&) {                                    \
-         ::boost::detail::test_results();                      \
-      }                                                        \
-      catch(...) {                                             \
-         ::boost::detail::throw_failed_impl                    \
-         (#EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
-      }                                                        \
+   #define BOOST_TEST_THROWS( EXPR, EXCEP )                           \
+      try {                                                           \
+         EXPR;                                                        \
+         ::boost::detail::throw_failed_impl                           \
+         (#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+      }                                                               \
+      catch(EXCEP const&) {                                           \
+         ::boost::detail::test_results();                             \
+      }                                                               \
+      catch(...) {                                                    \
+         ::boost::detail::throw_failed_impl                           \
+         (#EXPR, #EXCEP, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+      }                                                               \
    //
 #else
    #define BOOST_TEST_THROWS( EXPR, EXCEP )
 #endif
 
+#ifndef BOOST_NO_EXCEPTIONS
+#  define BOOST_TEST_NO_THROW(EXPR)                                    \
+    try {                                                              \
+        EXPR;                                                          \
+    } catch (const std::exception& e) {                                \
+        ::boost::detail::no_throw_failed_impl                          \
+        (#EXPR, e.what(), __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); \
+    } catch (...) {                                                    \
+        ::boost::detail::no_throw_failed_impl                          \
+        (#EXPR, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION);           \
+    }
+    //
+#else
+#  define BOOST_TEST_NO_THROW(EXPR) { EXPR; }
+#endif
+
 #endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_HPP

include/boost/core/lightweight_test_trait.hpp

@@ -9,16 +9,21 @@
 
 // boost/core/lightweight_test_trait.hpp
 //
-// BOOST_TEST_TRAIT_TRUE, BOOST_TEST_TRAIT_FALSE
+// BOOST_TEST_TRAIT_TRUE, BOOST_TEST_TRAIT_FALSE, BOOST_TEST_TRAIT_SAME
 //
 // Copyright 2014 Peter Dimov
 //
+// Copyright 2019 Glen Joseph Fernandes
+// (glenjofe@gmail.com)
+//
 // Distributed under the Boost Software License, Version 1.0.
 // See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt
 
 #include <boost/core/lightweight_test.hpp>
 #include <boost/core/typeinfo.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -26,6 +31,50 @@ namespace boost
 namespace detail
 {
 
+template<class, int = 0> struct test_print { };
+
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T, 2>)
+{
+    return o << boost::core::demangled_name(BOOST_CORE_TYPEID(T));
+}
+
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T, 1>)
+{
+    return o << test_print<T, 2>();
+}
+
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<const T, 1>)
+{
+    return o << test_print<T, 2>() << " const";
+}
+
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<volatile T, 1>)
+{
+    return o << test_print<T, 2>() << " volatile";
+}
+
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<const volatile T, 1>)
+{
+    return o << test_print<T, 2>() << " const volatile";
+}
+
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T>)
+{
+    return o << test_print<T, 1>();
+}
+
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T&>)
+{
+    return o << test_print<T, 1>() << " &";
+}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+template<class T> inline std::ostream& operator<<(std::ostream& o, test_print<T&&>)
+{
+    return o << test_print<T, 1>() << " &&";
+}
+#endif
+
 template< class T > inline void test_trait_impl( char const * trait, void (*)( T ),
   bool expected, char const * file, int line, char const * function )
 {
@@ -46,6 +95,31 @@ template< class T > inline void test_trait_impl( char const * trait, void (*)( T
     }
 }
 
+template<class T> inline bool test_trait_same_impl_( T )
+{
+    return T::value;
+}
+
+template<class T1, class T2> inline void test_trait_same_impl( char const * types,
+  boost::core::is_same<T1, T2> same, char const * file, int line, char const * function )
+{
+    if( test_trait_same_impl_( same ) )
+    {
+        test_results();
+    }
+    else
+    {
+        BOOST_LIGHTWEIGHT_TEST_OSTREAM
+            << file << "(" << line << "): test 'is_same<" << types << ">'"
+            << " failed in function '" << function
+            << "' ('" << test_print<T1>()
+            << "' != '" << test_print<T2>() << "')"
+            << std::endl;
+
+        ++test_results().errors();
+    }
+}
+
 } // namespace detail
 
 } // namespace boost
@@ -53,4 +127,11 @@ template< class T > inline void test_trait_impl( char const * trait, void (*)( T
 #define BOOST_TEST_TRAIT_TRUE(type) ( ::boost::detail::test_trait_impl(#type, (void(*)type)0, true, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
 #define BOOST_TEST_TRAIT_FALSE(type) ( ::boost::detail::test_trait_impl(#type, (void(*)type)0, false, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
 
+#if defined(__GNUC__)
+// ignoring -Wvariadic-macros with #pragma doesn't work under GCC
+# pragma GCC system_header
+#endif
+
+#define BOOST_TEST_TRAIT_SAME(...) ( ::boost::detail::test_trait_same_impl(#__VA_ARGS__, ::boost::core::is_same<__VA_ARGS__>(), __FILE__, __LINE__, BOOST_CURRENT_FUNCTION) )
+
 #endif // #ifndef BOOST_CORE_LIGHTWEIGHT_TEST_TRAIT_HPP

include/boost/core/no_exceptions_support.hpp

@@ -29,12 +29,24 @@
 #    define BOOST_RETHROW throw;
 #    define BOOST_CATCH_END }
 #else
-#    if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+#    if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
 #        define BOOST_TRY { if ("")
 #        define BOOST_CATCH(x) else if (!"")
-#    else
+#    elif !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
 #        define BOOST_TRY { if (true)
 #        define BOOST_CATCH(x) else if (false)
+#    else
+         // warning C4127: conditional expression is constant
+#        define BOOST_TRY { \
+             __pragma(warning(push)) \
+             __pragma(warning(disable: 4127)) \
+             if (true) \
+             __pragma(warning(pop))
+#        define BOOST_CATCH(x) else \
+             __pragma(warning(push)) \
+             __pragma(warning(disable: 4127)) \
+             if (false) \
+             __pragma(warning(pop))
 #    endif
 #    define BOOST_RETHROW
 #    define BOOST_CATCH_END }

include/boost/core/noinit_adaptor.hpp

@@ -0,0 +1,87 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_NOINIT_ADAPTOR_HPP
+#define BOOST_CORE_NOINIT_ADAPTOR_HPP
+
+#include <boost/core/allocator_access.hpp>
+
+namespace boost {
+
+template<class A>
+struct noinit_adaptor
+    : A {
+    template<class U>
+    struct rebind {
+        typedef noinit_adaptor<typename allocator_rebind<A, U>::type> other;
+    };
+
+    noinit_adaptor()
+        : A() { }
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    template<class U>
+    noinit_adaptor(U&& u) BOOST_NOEXCEPT
+        : A(std::forward<U>(u)) { }
+#else
+    template<class U>
+    noinit_adaptor(const U& u) BOOST_NOEXCEPT
+        : A(u) { }
+
+    template<class U>
+    noinit_adaptor(U& u) BOOST_NOEXCEPT
+        : A(u) { }
+#endif
+
+    template<class U>
+    noinit_adaptor(const noinit_adaptor<U>& u) BOOST_NOEXCEPT
+        : A(static_cast<const A&>(u)) { }
+
+    template<class U>
+    void construct(U* p) {
+        ::new((void*)p) U;
+    }
+
+#if defined(BOOST_NO_CXX11_ALLOCATOR)
+    template<class U, class V>
+    void construct(U* p, const V& v) {
+        ::new((void*)p) U(v);
+    }
+#endif
+
+    template<class U>
+    void destroy(U* p) {
+        p->~U();
+    }
+};
+
+template<class T, class U>
+inline bool
+operator==(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) BOOST_NOEXCEPT
+{
+    return static_cast<const T&>(lhs) == static_cast<const U&>(rhs);
+}
+
+template<class T, class U>
+inline bool
+operator!=(const noinit_adaptor<T>& lhs,
+    const noinit_adaptor<U>& rhs) BOOST_NOEXCEPT
+{
+    return !(lhs == rhs);
+}
+
+template<class A>
+inline noinit_adaptor<A>
+noinit_adapt(const A& a) BOOST_NOEXCEPT
+{
+    return noinit_adaptor<A>(a);
+}
+
+} /* boost */
+
+#endif

include/boost/core/noncopyable.hpp

@@ -38,8 +38,7 @@ namespace noncopyable_  // protection from unintended ADL
   class noncopyable: base_token
   {
   protected:
-#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)\
-      && !BOOST_WORKAROUND(__ICC, <= 1600)
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)
       BOOST_CONSTEXPR noncopyable() = default;
       ~noncopyable() = default;
 #else

include/boost/core/nvp.hpp

@@ -0,0 +1,57 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_NVP_HPP
+#define BOOST_CORE_NVP_HPP
+
+#include <boost/core/addressof.hpp>
+#include <boost/config.hpp>
+
+namespace boost {
+namespace serialization {
+
+template<class T>
+class nvp {
+public:
+    nvp(const char* n, T& v) BOOST_NOEXCEPT
+        : n_(n)
+        , v_(boost::addressof(v)) { }
+
+    const char* name() const BOOST_NOEXCEPT {
+        return n_;
+    }
+
+    T& value() const BOOST_NOEXCEPT {
+        return *v_;
+    }
+
+    const T& const_value() const BOOST_NOEXCEPT {
+        return *v_;
+    }
+
+private:
+    const char* n_;
+    T* v_;
+};
+
+template<class T>
+inline const nvp<T>
+make_nvp(const char* n, T& v) BOOST_NOEXCEPT
+{
+    return nvp<T>(n, v);
+}
+
+} /* serialization */
+
+using serialization::nvp;
+using serialization::make_nvp;
+
+} /* boost */
+
+#define BOOST_NVP(v) boost::make_nvp(BOOST_STRINGIZE(v), v)
+
+#endif

include/boost/core/pointer_traits.hpp

@@ -13,6 +13,7 @@ Distributed under the Boost Software License, Version 1.0.
 #include <memory>
 #else
 #include <boost/core/addressof.hpp>
+#include <cstddef>
 #endif
 
 namespace boost {

include/boost/core/quick_exit.hpp

@@ -16,7 +16,7 @@
 //  http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/config.hpp>
-#include <cstdlib>
+#include <stdlib.h>
 
 #if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
 

include/boost/core/ref.hpp

@@ -10,6 +10,7 @@
 #include <boost/config.hpp>
 #include <boost/config/workaround.hpp>
 #include <boost/core/addressof.hpp>
+#include <boost/core/enable_if.hpp>
 
 //
 //  ref.hpp - ref/cref, useful helper functions
@@ -46,6 +47,26 @@ namespace boost
 
 #endif
 
+namespace detail
+{
+
+template< class Y, class T > struct ref_convertible
+{
+    typedef char (&yes) [1];
+    typedef char (&no)  [2];
+
+    static yes f( T* );
+    static no  f( ... );
+
+    enum _vt { value = sizeof( (f)( static_cast<Y*>(0) ) ) == sizeof(yes) };
+};
+
+struct ref_empty
+{
+};
+
+} // namespace detail
+
 // reference_wrapper
 
 /**
@@ -87,6 +108,14 @@ public:
 public:
 #endif
 
+    template<class Y> friend class reference_wrapper;
+
+    template<class Y> reference_wrapper( reference_wrapper<Y> r,
+        typename enable_if_c<boost::detail::ref_convertible<Y, T>::value,
+            boost::detail::ref_empty>::type = boost::detail::ref_empty() ): t_( r.t_ )
+    {
+    }
+
     /**
      @return The stored reference.
      @remark Does not throw.
@@ -116,7 +145,7 @@ private:
 /**
  @cond
 */
-#if defined( __BORLANDC__ ) && BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT(0x581) )
+#if defined( BOOST_BORLANDC ) && BOOST_WORKAROUND( BOOST_BORLANDC, BOOST_TESTED_AT(0x581) )
 #  define BOOST_REF_CONST
 #else
 #  define BOOST_REF_CONST const

include/boost/core/swap.hpp

@@ -23,9 +23,12 @@
 
 #include <boost/core/enable_if.hpp>
 #include <boost/config.hpp>
-#include <utility> //for std::swap (C++11)
-#include <algorithm> //for std::swap (C++98)
-#include <cstddef> //for std::size_t
+#if __cplusplus >= 201103L || defined(BOOST_DINKUMWARE_STDLIB)
+#include <utility> // for std::swap (C++11)
+#else
+#include <algorithm> // for std::swap (C++98)
+#endif
+#include <cstddef> // for std::size_t
 
 namespace boost_swap_impl
 {

include/boost/core/typeinfo.hpp

@@ -47,7 +47,7 @@ public:
 
     bool operator==( typeinfo const& rhs ) const
     {
-#if ( defined(_WIN32) || defined(__CYGWIN__) ) && defined(__GNUC__) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
+#if ( defined(_WIN32) || defined(__CYGWIN__) ) && ( defined(__GNUC__) || defined(__clang__) ) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
 
         return lib_id_ == rhs.lib_id_? this == &rhs: std::strcmp( name_, rhs.name_ ) == 0;
 
@@ -65,7 +65,7 @@ public:
 
     bool before( typeinfo const& rhs ) const
     {
-#if ( defined(_WIN32) || defined(__CYGWIN__) ) && defined(__GNUC__) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
+#if ( defined(_WIN32) || defined(__CYGWIN__) ) && ( defined(__GNUC__) || defined(__clang__) ) && !defined(BOOST_DISABLE_CURRENT_FUNCTION)
 
         return lib_id_ == rhs.lib_id_? std::less< typeinfo const* >()( this, &rhs ): std::strcmp( name_, rhs.name_ ) < 0;
 

include/boost/core/uncaught_exceptions.hpp

@@ -1,5 +1,5 @@
 /*
- *             Copyright Andrey Semashev 2018.
+ *          Copyright Andrey Semashev 2018 - 2020.
  * Distributed under the Boost Software License, Version 1.0.
  *    (See accompanying file LICENSE_1_0.txt or copy at
  *          https://www.boost.org/LICENSE_1_0.txt)
@@ -9,7 +9,7 @@
  * \author Andrey Semashev
  * \date   2018-11-10
  *
- * \brief  This header provides an `uncaught_exception` function implementation, which was introduced in C++17.
+ * \brief  This header provides an `uncaught_exceptions` function implementation, which was introduced in C++17.
  *
  * The code in this file is based on the implementation by Evgeny Panasyuk:
  *
@@ -26,8 +26,23 @@
 #pragma once
 #endif
 
-// Visual Studio 14 supports N4152 std::uncaught_exceptions()
-#if (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411) || \
+#if defined(__APPLE__)
+#include <Availability.h>
+// Apple systems only support std::uncaught_exceptions starting with specific versions:
+// - Mac OS >= 10.12
+// - iOS >= 10.0
+// - tvOS >= 10.0
+// - watchOS >= 3.0
+// https://github.com/boostorg/core/issues/80
+#if (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411) && \
+    ( \
+        (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200) || \
+        (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000) \
+    )
+#define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
+#endif
+// Visual Studio 14.0 supports N4152 std::uncaught_exceptions() but doesn't define __cpp_lib_uncaught_exceptions
+#elif (defined(__cpp_lib_uncaught_exceptions) && __cpp_lib_uncaught_exceptions >= 201411) || \
     (defined(_MSC_VER) && _MSC_VER >= 1900)
 #define BOOST_CORE_HAS_UNCAUGHT_EXCEPTIONS
 #endif
@@ -46,20 +61,45 @@
 #if defined(BOOST_CORE_HAS_CXXABI_H)
 // MinGW GCC 4.4 seem to not work the same way the newer GCC versions do. As a result, __cxa_get_globals based implementation will always return 0.
 // Just disable it for now and fall back to std::uncaught_exception().
-#if !defined(__MINGW32__) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)))
-#define BOOST_CORE_HAS_CXA_GET_GLOBALS
+// On AIX, xlclang++ does have cxxabi.h but doesn't have __cxa_get_globals (https://github.com/boostorg/core/issues/78).
+#if !( \
+        (defined(__MINGW32__) && (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 405)) || \
+        defined(__ibmxl__) \
+    )
 #include <cxxabi.h>
-// Only GCC 4.7 declares __cxa_get_globals() in cxxabi.h, older compilers do not expose this function but it's there
-#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407
+#include <cstring>
+#define BOOST_CORE_HAS_CXA_GET_GLOBALS
+// At least on MinGW and Linux, only GCC since 4.7 declares __cxa_get_globals() in cxxabi.h. Older versions of GCC do not expose this function but it's there.
+// On OpenBSD, it seems, the declaration is also missing.
+// Note that at least on FreeBSD 11, cxxabi.h declares __cxa_get_globals with a different exception specification, so we can't declare the function unconditionally.
+// On Linux with clang and libc++ and on OS X, there is a version of cxxabi.h from libc++abi that doesn't declare __cxa_get_globals, but provides __cxa_uncaught_exceptions.
+// The function only appeared in version _LIBCPPABI_VERSION >= 1002 of the library. Unfortunately, there are linking errors about undefined reference to __cxa_uncaught_exceptions
+// on Ubuntu Trusty and OS X, so we avoid using it and forward-declare __cxa_get_globals instead.
+// On QNX SDP 7.0 (QCC 5.4.0), there are multiple cxxabi.h, one from glibcxx from gcc and another from libc++abi from LLVM. Which one is included will be determined by the qcc
+// command line arguments (-V and/or -Y; http://www.qnx.com/developers/docs/7.0.0/#com.qnx.doc.neutrino.utilities/topic/q/qcc.html). The LLVM libc++abi is missing the declaration
+// of __cxa_get_globals but it is also patched by QNX developers to not define _LIBCPPABI_VERSION. Older QNX SDP versions, up to and including 6.6, don't provide LLVM and libc++abi.
+// See https://github.com/boostorg/core/issues/59.
+#if !defined(__FreeBSD__) && \
+    ( \
+        (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407) || \
+        defined(__OpenBSD__) || \
+        (defined(__QNXNTO__) && !defined(__GLIBCXX__) && !defined(__GLIBCPP__)) || \
+        defined(_LIBCPPABI_VERSION) \
+    )
 namespace __cxxabiv1 {
 struct __cxa_eh_globals;
+#if defined(__OpenBSD__)
+extern "C" __cxa_eh_globals* __cxa_get_globals();
+#else
 extern "C" __cxa_eh_globals* __cxa_get_globals() BOOST_NOEXCEPT_OR_NOTHROW __attribute__((__const__));
+#endif
 } // namespace __cxxabiv1
-#endif // defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407
+#endif
 #endif
 #endif // defined(BOOST_CORE_HAS_CXXABI_H)
 
 #if defined(_MSC_VER) && _MSC_VER >= 1400
+#include <cstring>
 #define BOOST_CORE_HAS_GETPTD
 namespace boost {
 namespace core {
@@ -89,10 +129,14 @@ inline unsigned int uncaught_exceptions() BOOST_NOEXCEPT
     return static_cast< unsigned int >(std::uncaught_exceptions());
 #elif defined(BOOST_CORE_HAS_CXA_GET_GLOBALS)
     // Tested on {clang 3.2,GCC 3.5.6,GCC 4.1.2,GCC 4.4.6,GCC 4.4.7}x{x32,x64}
-    return *(reinterpret_cast< const unsigned int* >(reinterpret_cast< const char* >(::abi::__cxa_get_globals()) + sizeof(void*))); // __cxa_eh_globals::uncaughtExceptions, x32 offset - 0x4, x64 - 0x8
+    unsigned int count;
+    std::memcpy(&count, reinterpret_cast< const unsigned char* >(::abi::__cxa_get_globals()) + sizeof(void*), sizeof(count)); // __cxa_eh_globals::uncaughtExceptions, x32 offset - 0x4, x64 - 0x8
+    return count;
 #elif defined(BOOST_CORE_HAS_GETPTD)
     // MSVC specific. Tested on {MSVC2005SP1,MSVC2008SP1,MSVC2010SP1,MSVC2012}x{x32,x64}.
-    return *(reinterpret_cast< const unsigned int* >(static_cast< const char* >(boost::core::detail::_getptd()) + (sizeof(void*) == 8 ? 0x100 : 0x90))); // _tiddata::_ProcessingThrow, x32 offset - 0x90, x64 - 0x100
+    unsigned int count;
+    std::memcpy(&count, static_cast< const unsigned char* >(boost::core::detail::_getptd()) + (sizeof(void*) == 8u ? 0x100 : 0x90), sizeof(count)); // _tiddata::_ProcessingThrow, x32 offset - 0x90, x64 - 0x100
+    return count;
 #else
     // Portable C++03 implementation. Does not allow to detect multiple nested exceptions.
     return static_cast< unsigned int >(std::uncaught_exception());

include/boost/core/use_default.hpp

@@ -0,0 +1,17 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_CORE_USE_DEFAULT_HPP
+#define BOOST_CORE_USE_DEFAULT_HPP
+
+namespace boost {
+
+struct use_default { };
+
+} /* boost */
+
+#endif

include/boost/detail/iterator.hpp

@@ -6,7 +6,11 @@
 #ifndef ITERATOR_DWA122600_HPP_
 #define ITERATOR_DWA122600_HPP_
 
-// This header is obsolete and will be deprecated.
+// This header is obsolete and deprecated.
+
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED("<iterator>")
 
 #include <iterator>
 #if defined(__SUNPRO_CC) && (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION))

include/boost/detail/no_exceptions_support.hpp

@@ -12,6 +12,10 @@
 // The header file at this path is deprecated;
 // use boost/core/no_exceptions_support.hpp instead.
 
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED("<boost/core/no_exceptions_support.hpp>")
+
 #include <boost/core/no_exceptions_support.hpp>
 
 #endif

include/boost/detail/scoped_enum_emulation.hpp

@@ -12,6 +12,10 @@
 // The header file at this path is deprecated;
 // use boost/core/scoped_enum.hpp instead.
 
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED("<boost/core/scoped_enum.hpp>")
+
 #include <boost/core/scoped_enum.hpp>
 
 #endif

include/boost/detail/sp_typeinfo.hpp

@@ -18,6 +18,9 @@
 //  http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/core/typeinfo.hpp>
+#include <boost/config/header_deprecated.hpp>
+
+BOOST_HEADER_DEPRECATED( "<boost/core/typeinfo.hpp>" )
 
 namespace boost
 {

test/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright 2018, 2019 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
+
+include(BoostTestJamfile OPTIONAL RESULT_VARIABLE HAVE_BOOST_TEST)
+
+if(HAVE_BOOST_TEST)
+
+boost_test_jamfile(FILE Jamfile.v2 LINK_LIBRARIES Boost::core Boost::static_assert Boost::type_traits Boost::throw_exception)
+
+endif()
+
+add_subdirectory(swap)

test/Jamfile.v2

@@ -35,7 +35,10 @@ compile-fail ref_rv_fail4.cpp ;
 compile-fail ref_rv_fail5.cpp ;
 compile-fail ref_implicit_fail.cpp ;
 compile-fail ref_implicit_fail2.cpp ;
+compile-fail ref_implicit_fail3.cpp ;
+compile-fail ref_implicit_fail4.cpp ;
 run ref_cv_test.cpp ;
+run ref_conversion_test.cpp ;
 
 run eif_constructors.cpp ;
 run eif_dummy_arg_disambiguation.cpp ;
@@ -55,10 +58,12 @@ compile-fail explicit_operator_bool_compile_fail_conv_pvoid.cpp ;
 compile-fail explicit_operator_bool_compile_fail_delete.cpp ;
 compile-fail explicit_operator_bool_compile_fail_shift.cpp ;
 
-compile ignore_unused_test.cpp : <toolset>gcc-4.8:<cxxflags>"-Wunused-variable -Wunused-local-typedefs -Werror"
-                                   <toolset>gcc:<cxxflags>"-Wunused-variable -Werror"
-                                   <toolset>clang:<cxxflags>"-Wunused-variable -Werror"
-                                   <toolset>msvc:<cxxflags>"/we4100 /we4101" ;
+compile ignore_unused_test.cpp
+  : <warnings>extra
+    <toolset>gcc:<warnings-as-errors>on
+    <toolset>clang:<warnings-as-errors>on
+    <toolset>msvc:<warnings-as-errors>on ;
+
 run sp_typeinfo_test.cpp ;
 run sp_typeinfo_test.cpp : : : <rtti>off : sp_typeinfo_test_no_rtti ;
 
@@ -66,16 +71,35 @@ run visit_each_test.cpp ;
 
 run get_pointer_test.cpp ;
 
-run lightweight_test_test.cpp ;
-run lightweight_test_test.cpp : : : <exception-handling>off : lightweight_test_test_no_except ;
-run lightweight_test_test2.cpp ;
-run lightweight_test_all_eq_test.cpp ;
-run lightweight_test_all_with_test.cpp ;
-run lightweight_test_all_with_fail.cpp ;
-run lightweight_test_lt_le_test.cpp ;
-run lightweight_test_gt_ge_test.cpp ;
-run lightweight_test_eq_nullptr.cpp ;
-run lightweight_test_test3.cpp ;
+local pedantic-errors = <warnings>pedantic
+    <toolset>msvc:<warnings-as-errors>on
+    <toolset>gcc:<warnings-as-errors>on
+    <toolset>clang:<warnings-as-errors>on ;
+
+run lightweight_test_test.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_test.cpp : : :
+  <exception-handling>off $(pedantic-errors) : lightweight_test_test_no_except ;
+run lightweight_test_test2.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_all_with_test.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_lt_le_test.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_gt_ge_test.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_eq_nullptr.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_test3.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_test4.cpp
+  : : : $(pedantic-errors) ;
+run lightweight_test_test5.cpp
+  : : : $(pedantic-errors)
+    <toolset>gcc-4.4.7:<cxxflags>-Wno-sign-compare ;
+
+run-fail lightweight_test_all_eq_test.cpp ;
+run-fail lightweight_test_all_with_fail.cpp ;
 
 run-fail lightweight_test_fail.cpp ;
 run-fail lightweight_test_fail2.cpp ;
@@ -89,12 +113,22 @@ run-fail lightweight_test_fail8.cpp ;
 run-fail lightweight_test_fail8.cpp : : : <rtti>off : lightweight_test_fail8_no_rtti ;
 run-fail lightweight_test_fail9.cpp ;
 run-fail lightweight_test_fail10.cpp ;
-run-fail lightweight_test_fail11.cpp ;
+run-fail lightweight_test_fail11.cpp : ;
+run-fail lightweight_test_fail12.cpp ;
+run-fail lightweight_test_fail13.cpp ;
+run-fail lightweight_test_fail14.cpp ;
 run-fail lightweight_test_lt_fail.cpp ;
 run-fail lightweight_test_le_fail.cpp ;
 run-fail lightweight_test_gt_fail.cpp ;
 run-fail lightweight_test_ge_fail.cpp ;
 
+run lightweight_test_bool.cpp
+  : : : $(pedantic-errors) ;
+
+run lightweight_test_with_test.cpp
+  : : : $(pedantic-errors) ;
+run-fail lightweight_test_with_fail.cpp ;
+
 run is_same_test.cpp ;
 
 run typeinfo_test.cpp ;
@@ -103,9 +137,12 @@ run typeinfo_test.cpp : : : <rtti>off : typeinfo_test_no_rtti ;
 run iterator_test.cpp ;
 run detail_iterator_test.cpp ;
 
-run demangle_test.cpp  : : : <test-info>always_show_run_output ;
+run demangle_test.cpp
+  : : : <test-info>always_show_run_output ;
+
+run demangled_name_test.cpp
+  : : : <test-info>always_show_run_output ;
 
-run demangled_name_test.cpp  : : : <test-info>always_show_run_output ;
 run demangled_name_test.cpp  : : : <rtti>off <test-info>always_show_run_output : demangled_name_test_no_rtti ;
 
 run scoped_enum.cpp ;
@@ -124,22 +161,64 @@ run to_address_test.cpp ;
 run exchange_test.cpp ;
 run exchange_move_test.cpp ;
 
+run first_scalar_test.cpp ;
+compile first_scalar_constexpr_test.cpp ;
+
 run empty_value_test.cpp ;
 run empty_value_size_test.cpp ;
+run empty_value_final_test.cpp ;
 
 run quick_exit_test.cpp ;
 run-fail quick_exit_fail.cpp ;
 
+compile use_default_test.cpp ;
+
+run default_allocator_test.cpp
+  : : : <warnings>pedantic
+        <toolset>msvc:<warnings-as-errors>on
+        <toolset>gcc:<warnings-as-errors>on
+        <toolset>clang:<warnings-as-errors>on ;
+
+run noinit_adaptor_test.cpp ;
+run alloc_construct_test.cpp ;
+run alloc_construct_throws_test.cpp ;
+run alloc_construct_cxx11_test.cpp ;
+
+run nvp_test.cpp ;
+
+run allocator_value_type_test.cpp ;
+run allocator_pointer_test.cpp ;
+run allocator_const_pointer_test.cpp ;
+run allocator_void_pointer_test.cpp ;
+run allocator_const_void_pointer_test.cpp ;
+run allocator_difference_type_test.cpp ;
+run allocator_size_type_test.cpp ;
+run allocator_pocca_test.cpp ;
+run allocator_pocma_test.cpp ;
+run allocator_pocs_test.cpp ;
+run allocator_is_always_equal_test.cpp ;
+run allocator_rebind_test.cpp ;
+run allocator_allocate_test.cpp ;
+run allocator_allocate_hint_test.cpp ;
+run allocator_deallocate_test.cpp ;
+run allocator_max_size_test.cpp ;
+run allocator_soccc_test.cpp ;
+
 lib lib_typeid : lib_typeid.cpp : <link>shared:<define>LIB_TYPEID_DYN_LINK=1 ;
 
 run test_lib_typeid.cpp lib_typeid : : : <link>shared : test_lib_typeid_shared ;
 run test_lib_typeid.cpp lib_typeid : : : <link>static : test_lib_typeid_static ;
 
 run test_lib_typeid.cpp lib_typeid : : : <link>shared <rtti>off : test_lib_typeid_shared_no_rtti ;
-run test_lib_typeid.cpp lib_typeid : : : <link>static <rtti>off  : test_lib_typeid_static_no_rtti ;
+run test_lib_typeid.cpp lib_typeid : : : <link>static <rtti>off : test_lib_typeid_static_no_rtti ;
 
-run uncaught_exceptions.cpp : : : <exception-handling>on ;
-run uncaught_exceptions_np.cpp : : : <exception-handling>on ;
+run uncaught_exceptions.cpp
+  : : : <exception-handling>on ;
+run uncaught_exceptions_np.cpp
+  : : : <exception-handling>on ;
+
+run no_exceptions_support_test.cpp ;
+run no_exceptions_support_test.cpp : : : <exception-handling>off : no_exceptions_support_test_nx ;
 
 use-project /boost/core/swap : ./swap ;
 build-project ./swap ;

test/addressof_fn_test.cpp

@@ -16,7 +16,7 @@
 //  http://www.boost.org/LICENSE_1_0.txt
 
 #include <boost/utility/addressof.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 
 void f0()

test/addressof_np_test.cpp

@@ -7,7 +7,7 @@
 //
 
 #include <boost/utility/addressof.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 #include <cstddef>
 
 #if defined( BOOST_NO_CXX11_NULLPTR )

test/addressof_test.cpp

@@ -20,7 +20,7 @@
 #pragma warning(pop)
 #endif
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 template<class T> void scalar_test( T * = 0 )
 {

test/addressof_test2.cpp

@@ -22,7 +22,7 @@
 #pragma warning(pop)
 #endif
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 template<class T> void scalar_test( T * = 0 )
 {

test/alloc_construct_cxx11_test.cpp

@@ -0,0 +1,78 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+#include <boost/core/alloc_construct.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+class type {
+public:
+    explicit type(int x)
+        : value_(x) { }
+
+    int value() const {
+        return value_;
+    }
+
+    static int count;
+
+private:
+    type(const type&);
+    type& operator=(const type&);
+
+    int value_;
+};
+
+int type::count = 0;
+
+template<class T>
+struct creator {
+    typedef T value_type;
+
+    creator() { }
+
+    template<class U>
+    creator(const creator<U>&) { }
+
+    T* allocate(std::size_t size) {
+        return static_cast<T*>(::operator new(sizeof(T) * size));
+    }
+
+    void deallocate(T* ptr, std::size_t) {
+        ::operator delete(ptr);
+    }
+
+    template<class V>
+    void construct(type* ptr, const V& value) {
+        ::new(static_cast<void*>(ptr)) type(value + 1);
+        ++type::count;
+    }
+
+    void destroy(type* ptr) {
+        ptr->~type();
+        --type::count;
+    }
+};
+
+int main()
+{
+    creator<type> a;
+    type* p = a.allocate(1);
+    boost::alloc_construct(a, p, 1);
+    BOOST_TEST_EQ(type::count, 1);
+    BOOST_TEST_EQ(p->value(), 2);
+    boost::alloc_destroy(a, p);
+    BOOST_TEST_EQ(type::count, 0);
+    return boost::report_errors();
+}
+#else
+int main()
+{
+    return 0;
+}
+#endif

test/alloc_construct_test.cpp

@@ -0,0 +1,135 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/alloc_construct.hpp>
+#include <boost/core/default_allocator.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+class type {
+public:
+    explicit type(int x = 0, int y = 0)
+        : value_(x + y) {
+        ++count;
+    }
+
+    type(const type& other)
+        : value_(other.value_) {
+        ++count;
+    }
+
+    ~type() {
+        --count;
+    }
+
+    int value() const {
+        return value_;
+    }
+
+    static int count;
+
+private:
+    int value_;
+};
+
+int type::count = 0;
+
+void test_construct()
+{
+    boost::default_allocator<type> a;
+    type* p = a.allocate(1);
+    boost::alloc_construct(a, p);
+    BOOST_TEST_EQ(type::count, 1);
+    BOOST_TEST_EQ(p->value(), 0);
+    boost::alloc_destroy(a, p);
+    BOOST_TEST_EQ(type::count, 0);
+    a.deallocate(p, 1);
+}
+
+void test_construct_value()
+{
+    boost::default_allocator<type> a;
+    type* p = a.allocate(1);
+    boost::alloc_construct(a, p, 1);
+    BOOST_TEST_EQ(type::count, 1);
+    BOOST_TEST_EQ(p->value(), 1);
+    boost::alloc_destroy(a, p);
+    BOOST_TEST_EQ(type::count, 0);
+    a.deallocate(p, 1);
+}
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
+    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+void test_construct_args()
+{
+    boost::default_allocator<type> a;
+    type* p = a.allocate(1);
+    boost::alloc_construct(a, p, 1, 2);
+    BOOST_TEST_EQ(type::count, 1);
+    BOOST_TEST_EQ(p->value(), 3);
+    boost::alloc_destroy(a, p);
+    BOOST_TEST_EQ(type::count, 0);
+    a.deallocate(p, 1);
+}
+#endif
+
+void test_construct_n()
+{
+    boost::default_allocator<type> a;
+    type* p = a.allocate(3);
+    boost::alloc_construct_n(a, p, 3);
+    BOOST_TEST_EQ(type::count, 3);
+    BOOST_TEST_EQ(p[0].value(), 0);
+    BOOST_TEST_EQ(p[1].value(), 0);
+    BOOST_TEST_EQ(p[2].value(), 0);
+    boost::alloc_destroy_n(a, p, 3);
+    BOOST_TEST_EQ(type::count, 0);
+    a.deallocate(p, 3);
+}
+
+void test_construct_n_list()
+{
+    boost::default_allocator<type> a;
+    type* p = a.allocate(3);
+    type q(1);
+    boost::alloc_construct_n(a, p, 3, &q, 1);
+    BOOST_TEST_EQ(type::count, 4);
+    BOOST_TEST_EQ(p[0].value(), 1);
+    BOOST_TEST_EQ(p[1].value(), 1);
+    BOOST_TEST_EQ(p[2].value(), 1);
+    boost::alloc_destroy_n(a, p, 3);
+    BOOST_TEST_EQ(type::count, 1);
+    a.deallocate(p, 3);
+}
+
+void test_construct_n_iterator()
+{
+    boost::default_allocator<type> a;
+    type* p = a.allocate(3);
+    type l[] = { type(1), type(2), type(3) };
+    boost::alloc_construct_n(a, p, 3, &l[0]);
+    BOOST_TEST_EQ(type::count, 6);
+    BOOST_TEST_EQ(p[0].value(), 1);
+    BOOST_TEST_EQ(p[1].value(), 2);
+    BOOST_TEST_EQ(p[2].value(), 3);
+    boost::alloc_destroy_n(a, p, 3);
+    BOOST_TEST_EQ(type::count, 3);
+    a.deallocate(p, 3);
+}
+
+int main()
+{
+    test_construct();
+    test_construct_value();
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
+    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    test_construct_args();
+#endif
+    test_construct_n();
+    test_construct_n_list();
+    test_construct_n_iterator();
+    return boost::report_errors();
+}

test/alloc_construct_throws_test.cpp

@@ -0,0 +1,46 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/alloc_construct.hpp>
+#include <boost/core/default_allocator.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+class type {
+public:
+    type() {
+        if (count == 4) {
+            throw true;
+        }
+        ++count;
+    }
+
+    ~type() {
+        --count;
+    }
+
+    static int count;
+
+private:
+    type(const type&);
+    type& operator=(const type&);
+};
+
+int type::count = 0;
+
+int main()
+{
+    boost::default_allocator<type> a;
+    type* p = a.allocate(5);
+    try {
+        boost::alloc_construct_n(a, p, 5);
+        BOOST_ERROR("construct_n did not throw");
+    } catch (...) {
+        BOOST_TEST_EQ(type::count, 0);
+    }
+    a.deallocate(p, 5);
+    return boost::report_errors();
+}

test/allocator_allocate_hint_test.cpp

@@ -0,0 +1,59 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef std::size_t size_type;
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    template<class U>
+    struct rebind {
+        typedef A1<U> other;
+    };
+    A1()
+        : value() { }
+    T* allocate(std::size_t n, const void*) {
+        value = n;
+        return 0;
+    }
+    std::size_t value;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    A2()
+        : value() { }
+    T* allocate(std::size_t n) {
+        value = n;
+        return 0;
+    }
+    std::size_t value;
+};
+#endif
+
+int main()
+{
+    {
+        A1<int> a;
+        BOOST_TEST_NOT(boost::allocator_allocate(a, 5, 0));
+        BOOST_TEST_EQ(a.value, 5);
+    }
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    {
+        A2<int> a;
+        BOOST_TEST_NOT(boost::allocator_allocate(a, 5, 0));
+        BOOST_TEST_EQ(a.value, 5);
+    }
+#endif
+    return boost::report_errors();
+}

test/allocator_allocate_test.cpp

@@ -0,0 +1,31 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+template<class T>
+struct A {
+    typedef T value_type;
+    typedef T* pointer;
+    typedef std::size_t size_type;
+    A()
+        : value() { }
+    T* allocate(std::size_t n) {
+        value = n;
+        return 0;
+    }
+    std::size_t value;
+};
+
+int main()
+{
+    A<int> a;
+    BOOST_TEST_NOT(boost::allocator_allocate(a, 5));
+    BOOST_TEST_EQ(a.value, 5);
+    return boost::report_errors();
+}

test/allocator_const_pointer_test.cpp

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef int* const_pointer;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
+        boost::allocator_const_pointer<A1<char> >::type>));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<const int*,
+        boost::allocator_const_pointer<A2<int> >::type>));
+#endif
+    return boost::report_errors();
+}

test/allocator_const_void_pointer_test.cpp

@@ -0,0 +1,39 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef int* const_pointer;
+    typedef int* const_void_pointer;
+    template<class U>
+    struct rebind {
+        typedef A1<U> other;
+    };
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
+        boost::allocator_const_void_pointer<A1<char> >::type>));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<const void*,
+        boost::allocator_const_void_pointer<A2<int> >::type>));
+#endif
+    return boost::report_errors();
+}

test/allocator_construct_test.cpp

@@ -0,0 +1,46 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    A1() { }
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    A2() { }
+    template<class U, class V>
+    void construct(U* p, const V& v) {
+        ::new((void*)p) U(v + 1);
+    }
+};
+#endif
+
+int main()
+{
+    {
+        A1<int> a;
+        int i = 0;
+        boost::allocator_construct(a, &i, 5);
+        BOOST_TEST_EQ(i, 5);
+    }
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    {
+        A1<int> a;
+        int i = 0;
+        boost::allocator_construct(a, &i, 5);
+        BOOST_TEST_EQ(i, 6);
+    }
+#endif
+    return boost::report_errors();
+}

test/allocator_deallocate_test.cpp

@@ -0,0 +1,30 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+template<class T>
+struct A {
+    typedef T value_type;
+    typedef T* pointer;
+    typedef std::size_t size_type;
+    A()
+        : value() { }
+    void deallocate(T*, std::size_t n) {
+        value = n;
+    }
+    std::size_t value;
+};
+
+int main()
+{
+    A<int> a;
+    boost::allocator_deallocate(a, 0, 5);
+    BOOST_TEST_EQ(a.value, 5);
+    return boost::report_errors();
+}

test/allocator_destroy_test.cpp

@@ -0,0 +1,62 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+struct S {
+    static int count;
+    S() {
+        ++count;
+    }
+    S(const S&) {
+        ++count;
+    }
+    ~S() {
+        --count;
+    }
+};
+
+int S::count = 0;
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    A1() { }
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    A2() { }
+    template<class U>
+    void destroy(U* p) {
+        *p = U();
+    }
+};
+#endif
+
+int main()
+{
+    {
+        A1<int> a;
+        S s;
+        boost::allocator_destroy(a, &s);
+        BOOST_TEST_EQ(S::count, 0);
+        ::new((void*)&s) S();
+    }
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    {
+        A1<int> a;
+        int i = 5;
+        boost::allocator_destroy(a, &i);
+        BOOST_TEST_EQ(i, 0);
+    }
+#endif
+    return boost::report_errors();
+}

test/allocator_difference_type_test.cpp

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef short difference_type;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<short,
+        boost::allocator_difference_type<A1<char> >::type>));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<std::ptrdiff_t,
+        boost::allocator_difference_type<A2<int> >::type>));
+#endif
+    return boost::report_errors();
+}

test/allocator_is_always_equal_test.cpp

@@ -0,0 +1,47 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    int value;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+
+template<class T>
+struct A3 {
+    typedef T value_type;
+    typedef std::false_type is_always_equal;
+};
+
+template<class T>
+struct A4 {
+    typedef T value_type;
+    typedef std::true_type is_always_equal;
+    int value;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_FALSE((boost::allocator_is_always_equal<A1<int> >::type));
+ #if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::allocator_is_always_equal<A2<int> >::type));
+    BOOST_TEST_TRAIT_FALSE((boost::allocator_is_always_equal<A3<int> >::type));
+    BOOST_TEST_TRAIT_TRUE((boost::allocator_is_always_equal<A4<int> >::type));
+ #endif
+    return boost::report_errors();
+}

test/allocator_max_size_test.cpp

@@ -0,0 +1,39 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <limits>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef short size_type;
+    A1() { }
+    short max_size() const {
+        return 1;
+    }
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    typedef short size_type;
+    A2() { }
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_EQ(boost::allocator_max_size(A1<int>()), 1);
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_LE(boost::allocator_max_size(A2<int>()),
+        (std::numeric_limits<short>::max)());
+#endif
+    return boost::report_errors();
+}

test/allocator_pocca_test.cpp

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    typedef std::true_type propagate_on_container_copy_assignment;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_FALSE((boost::
+        allocator_propagate_on_container_copy_assignment<A1<int> >::type));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::
+        allocator_propagate_on_container_copy_assignment<A2<int> >::type));
+#endif
+    return boost::report_errors();
+}

test/allocator_pocma_test.cpp

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    typedef std::true_type propagate_on_container_move_assignment;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_FALSE((boost::
+        allocator_propagate_on_container_move_assignment<A1<int> >::type));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::
+        allocator_propagate_on_container_move_assignment<A2<int> >::type));
+#endif
+    return boost::report_errors();
+}

test/allocator_pocs_test.cpp

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    typedef std::true_type propagate_on_container_swap;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_FALSE((boost::
+        allocator_propagate_on_container_swap<A1<int> >::type));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::
+        allocator_propagate_on_container_swap<A2<int> >::type));
+#endif
+    return boost::report_errors();
+}

test/allocator_pointer_test.cpp

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef int* pointer;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
+        boost::allocator_pointer<A1<char> >::type>));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
+        boost::allocator_pointer<A2<int> >::type>));
+#endif
+    return boost::report_errors();
+}

test/allocator_rebind_test.cpp

@@ -0,0 +1,37 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    template<class>
+    struct rebind {
+        typedef A1<int> other;
+    };
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<A1<int>,
+        boost::allocator_rebind<A1<char>, bool>::type>));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<A2<int>,
+        boost::allocator_rebind<A2<char>, int>::type>));
+#endif
+    return boost::report_errors();
+}

test/allocator_size_type_test.cpp

@@ -0,0 +1,34 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef int size_type;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int,
+        boost::allocator_size_type<A1<char> >::type>));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<std::size_t,
+        boost::allocator_size_type<A2<int> >::type>));
+#endif
+    return boost::report_errors();
+}

test/allocator_soccc_test.cpp

@@ -0,0 +1,41 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    A1(int n)
+        : value(n) { }
+    int value;
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+    A2(int n)
+        : value(n) { }
+    A2 select_on_container_copy_construction() const {
+        return A2(value + 1);
+    }
+    int value;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_EQ(1, boost::
+        allocator_select_on_container_copy_construction(A1<int>(1)).value);
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_EQ(2, boost::
+        allocator_select_on_container_copy_construction(A2<int>(1)).value);
+#endif
+    return boost::report_errors();
+}

test/allocator_value_type_test.cpp

@@ -0,0 +1,22 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A {
+    typedef T value_type;
+};
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int,
+        boost::allocator_value_type<A<int> >::type>));
+    return boost::report_errors();
+}

test/allocator_void_pointer_test.cpp

@@ -0,0 +1,39 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/allocator_access.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+template<class T>
+struct A1 {
+    typedef T value_type;
+    typedef int* pointer;
+    typedef int* void_pointer;
+    template<class U>
+    struct rebind {
+        typedef A1<U> other;
+    };
+};
+
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+template<class T>
+struct A2 {
+    typedef T value_type;
+};
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<int*,
+        boost::allocator_void_pointer<A1<char> >::type>));
+#if !defined(BOOST_NO_CXX11_ALLOCATOR)
+    BOOST_TEST_TRAIT_TRUE((boost::core::is_same<void*,
+        boost::allocator_void_pointer<A2<int> >::type>));
+#endif
+    return boost::report_errors();
+}

test/cmake_install_test/CMakeLists.txt

@@ -0,0 +1,17 @@
+# Copyright 2018, 2019 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
+
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(cmake_install_test LANGUAGES CXX)
+
+find_package(boost_core REQUIRED)
+
+add_executable(quick ../quick.cpp)
+target_link_libraries(quick Boost::core)
+
+enable_testing()
+add_test(quick quick)
+
+add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)

test/cmake_subdir_test/CMakeLists.txt

@@ -0,0 +1,19 @@
+# Copyright 2018, 2019 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
+
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(cmake_subdir_test LANGUAGES CXX)
+
+add_subdirectory(../.. boostorg/core)
+add_subdirectory(../../../assert boostorg/assert)
+add_subdirectory(../../../config boostorg/config)
+
+add_executable(quick ../quick.cpp)
+target_link_libraries(quick Boost::core)
+
+enable_testing()
+add_test(quick quick)
+
+add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)

test/default_allocator_test.cpp

@@ -0,0 +1,268 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/default_allocator.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+#include <vector>
+#include <list>
+
+class type {
+public:
+    explicit type(double value)
+        : value_(value) { }
+
+private:
+    type(const type&);
+    type& operator=(const type&);
+
+    double value_;
+};
+
+void test_value_type()
+{
+    BOOST_TEST_TRAIT_SAME(int,
+        boost::default_allocator<int>::value_type);
+    BOOST_TEST_TRAIT_SAME(type,
+        boost::default_allocator<type>::value_type);
+    BOOST_TEST_TRAIT_SAME(int[5],
+        boost::default_allocator<int[5]>::value_type);
+    BOOST_TEST_TRAIT_SAME(void,
+        boost::default_allocator<void>::value_type);
+}
+
+void test_pointer()
+{
+    BOOST_TEST_TRAIT_SAME(int*,
+        boost::default_allocator<int>::pointer);
+    BOOST_TEST_TRAIT_SAME(type*,
+        boost::default_allocator<type>::pointer);
+    BOOST_TEST_TRAIT_SAME(int(*)[5],
+        boost::default_allocator<int[5]>::pointer);
+    BOOST_TEST_TRAIT_SAME(void*,
+        boost::default_allocator<void>::pointer);
+}
+
+void test_const_pointer()
+{
+    BOOST_TEST_TRAIT_SAME(const int*,
+        boost::default_allocator<int>::const_pointer);
+    BOOST_TEST_TRAIT_SAME(const type*,
+        boost::default_allocator<type>::const_pointer);
+    BOOST_TEST_TRAIT_SAME(const int(*)[5],
+        boost::default_allocator<int[5]>::const_pointer);
+    BOOST_TEST_TRAIT_SAME(const void*,
+        boost::default_allocator<void>::const_pointer);
+}
+
+void test_reference()
+{
+    BOOST_TEST_TRAIT_SAME(int&,
+        boost::default_allocator<int>::reference);
+    BOOST_TEST_TRAIT_SAME(type&,
+        boost::default_allocator<type>::reference);
+    BOOST_TEST_TRAIT_SAME(int(&)[5],
+        boost::default_allocator<int[5]>::reference);
+    BOOST_TEST_TRAIT_SAME(void,
+        boost::default_allocator<void>::reference);
+}
+
+void test_const_reference()
+{
+    BOOST_TEST_TRAIT_SAME(const int&,
+        boost::default_allocator<int>::const_reference);
+    BOOST_TEST_TRAIT_SAME(const type&,
+        boost::default_allocator<type>::const_reference);
+    BOOST_TEST_TRAIT_SAME(const int(&)[5],
+        boost::default_allocator<int[5]>::const_reference);
+    BOOST_TEST_TRAIT_SAME(const void,
+        boost::default_allocator<void>::const_reference);
+}
+
+void test_size_type()
+{
+    BOOST_TEST_TRAIT_SAME(std::size_t,
+        boost::default_allocator<int>::size_type);
+    BOOST_TEST_TRAIT_SAME(std::size_t,
+        boost::default_allocator<type>::size_type);
+    BOOST_TEST_TRAIT_SAME(std::size_t,
+        boost::default_allocator<int[5]>::size_type);
+    BOOST_TEST_TRAIT_SAME(std::size_t,
+        boost::default_allocator<void>::size_type);
+}
+
+void test_difference_type()
+{
+    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
+        boost::default_allocator<int>::difference_type);
+    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
+        boost::default_allocator<type>::difference_type);
+    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
+        boost::default_allocator<int[5]>::difference_type);
+    BOOST_TEST_TRAIT_SAME(std::ptrdiff_t,
+        boost::default_allocator<void>::difference_type);
+}
+
+void test_propagate_on_container_move_assignment()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int>::
+        propagate_on_container_move_assignment));
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<type>::
+        propagate_on_container_move_assignment));
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int[5]>::
+        propagate_on_container_move_assignment));
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<void>::
+        propagate_on_container_move_assignment));
+}
+
+void test_is_always_equal()
+{
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int>::is_always_equal));
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<type>::is_always_equal));
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<int[5]>::is_always_equal));
+    BOOST_TEST_TRAIT_TRUE((boost::default_allocator<void>::is_always_equal));
+}
+
+void test_rebind()
+{
+    BOOST_TEST_TRAIT_SAME(boost::default_allocator<type>,
+        boost::default_allocator<int>::rebind<type>::other);
+    BOOST_TEST_TRAIT_SAME(boost::default_allocator<int[5]>,
+        boost::default_allocator<type>::rebind<int[5]>::other);
+    BOOST_TEST_TRAIT_SAME(boost::default_allocator<void>,
+        boost::default_allocator<int[5]>::rebind<void>::other);
+    BOOST_TEST_TRAIT_SAME(boost::default_allocator<int>,
+        boost::default_allocator<void>::rebind<int>::other);
+}
+
+void test_default_construct()
+{
+    boost::default_allocator<int> a1;
+    (void)a1;
+    boost::default_allocator<type> a2;
+    (void)a2;
+    boost::default_allocator<int[5]> a3;
+    (void)a3;
+    boost::default_allocator<void> a4;
+    (void)a4;
+}
+
+void test_copy()
+{
+    boost::default_allocator<int> a1;
+    boost::default_allocator<int> a2(a1);
+    (void)a2;
+    boost::default_allocator<int[5]> a3;
+    boost::default_allocator<int[5]> a4(a3);
+    (void)a4;
+    boost::default_allocator<void> a5;
+    boost::default_allocator<void> a6(a5);
+    (void)a6;
+}
+
+void test_construct_other()
+{
+    boost::default_allocator<int> a1;
+    boost::default_allocator<type> a2(a1);
+    boost::default_allocator<int[5]> a3(a2);
+    boost::default_allocator<void> a4(a3);
+    boost::default_allocator<int> a5(a4);
+    (void)a5;
+}
+
+template<class T>
+std::size_t max_size()
+{
+    return static_cast<std::size_t>(-1) / (2 < sizeof(T) ? sizeof(T) : 2);
+}
+
+void test_max_size()
+{
+    BOOST_TEST_EQ(max_size<int>(),
+        boost::default_allocator<int>().max_size());
+    BOOST_TEST_EQ(max_size<type>(),
+        boost::default_allocator<type>().max_size());
+    BOOST_TEST_EQ(max_size<int[5]>(),
+        boost::default_allocator<int[5]>().max_size());
+}
+
+template<class T>
+void test_allocate()
+{
+    boost::default_allocator<T> a;
+    T* p = a.allocate(1);
+    BOOST_TEST(p != 0);
+    a.deallocate(p, 1);
+    p = a.allocate(0);
+    a.deallocate(p, 0);
+    BOOST_TEST_THROWS(a.allocate(a.max_size() + 1), std::bad_alloc);
+}
+
+void test_allocate_deallocate()
+{
+    test_allocate<int>();
+    test_allocate<type>();
+    test_allocate<int[5]>();
+}
+
+void test_equals()
+{
+    BOOST_TEST(boost::default_allocator<int>() ==
+        boost::default_allocator<type>());
+    BOOST_TEST(boost::default_allocator<type>() ==
+        boost::default_allocator<int[5]>());
+    BOOST_TEST(boost::default_allocator<int[5]>() ==
+        boost::default_allocator<void>());
+    BOOST_TEST(boost::default_allocator<void>() ==
+        boost::default_allocator<int>());
+}
+
+void test_not_equals()
+{
+    BOOST_TEST(!(boost::default_allocator<int>() !=
+        boost::default_allocator<type>()));
+    BOOST_TEST(!(boost::default_allocator<type>() !=
+        boost::default_allocator<int[5]>()));
+    BOOST_TEST(!(boost::default_allocator<int[5]>() !=
+        boost::default_allocator<void>()));
+    BOOST_TEST(!(boost::default_allocator<void>() !=
+        boost::default_allocator<int>()));
+}
+
+void test_container()
+{
+    std::vector<int, boost::default_allocator<int> > v;
+    v.push_back(1);
+    BOOST_TEST(v.size() == 1);
+    BOOST_TEST(v.front() == 1);
+    std::list<int, boost::default_allocator<int> > l;
+    l.push_back(1);
+    BOOST_TEST(l.size() == 1);
+    BOOST_TEST(l.front() == 1);
+}
+
+int main()
+{
+    test_value_type();
+    test_pointer();
+    test_const_pointer();
+    test_reference();
+    test_const_reference();
+    test_size_type();
+    test_difference_type();
+    test_propagate_on_container_move_assignment();
+    test_is_always_equal();
+    test_rebind();
+    test_default_construct();
+    test_copy();
+    test_construct_other();
+    test_max_size();
+    test_allocate_deallocate();
+    test_equals();
+    test_not_equals();
+    test_container();
+    return boost::report_errors();
+}

test/detail_iterator_test.cpp

@@ -8,6 +8,7 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
+#define BOOST_ALLOW_DEPRECATED_HEADERS
 #include <boost/detail/iterator.hpp>
 #include <boost/core/is_same.hpp>
 #include <boost/core/lightweight_test_trait.hpp>

test/eif_constructors.cpp

@@ -12,7 +12,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::enable_if;
 using boost::disable_if;

test/eif_dummy_arg_disambiguation.cpp

@@ -12,7 +12,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::enable_if;
 using boost::disable_if;

test/eif_lazy.cpp

@@ -12,7 +12,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_same.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::enable_if_c;
 using boost::lazy_enable_if_c;

test/eif_lazy_test.cpp

@@ -14,7 +14,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_same.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::lazy_enable_if;
 using boost::lazy_disable_if;

test/eif_member_templates.cpp

@@ -12,7 +12,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::enable_if;
 using boost::disable_if;

test/eif_namespace_disambiguation.cpp

@@ -13,7 +13,7 @@
 #include <boost/config.hpp>
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::enable_if;
 using boost::is_arithmetic;

test/eif_no_disambiguation.cpp

@@ -13,7 +13,7 @@
 #include <boost/config.hpp>
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::enable_if;
 using boost::is_arithmetic;

test/eif_partial_specializations.cpp

@@ -12,7 +12,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_arithmetic.hpp>
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 using boost::enable_if_has_type;
 using boost::enable_if_c;

test/empty_value_final_test.cpp

@@ -0,0 +1,62 @@
+/*
+Copyright 2018 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/empty_value.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+#if !defined(BOOST_NO_CXX11_FINAL)
+class type final {
+public:
+    explicit type(int count)
+        : value_(count) { }
+    int value() const {
+        return value_ + 1;
+    }
+    int value() {
+        return value_ + 2;
+    }
+private:
+    int value_;
+};
+
+struct empty final {
+    int value() const {
+        return 1;
+    }
+    int value() {
+        return 2;
+    }
+};
+
+void test_type()
+{
+    const boost::empty_value<type> v1(boost::empty_init_t(), 3);
+    BOOST_TEST(v1.get().value() == 4);
+    boost::empty_value<type> v2(boost::empty_init_t(), 3);
+    BOOST_TEST(v2.get().value() == 5);
+}
+
+void test_empty()
+{
+    const boost::empty_value<empty> v1 = boost::empty_init_t();
+    BOOST_TEST(v1.get().value() == 1);
+    boost::empty_value<empty> v2;
+    BOOST_TEST(v2.get().value() == 2);
+}
+
+int main()
+{
+    test_type();
+    test_empty();
+    return boost::report_errors();
+}
+#else
+int main()
+{
+    return 0;
+}
+#endif

test/empty_value_test.cpp

@@ -9,67 +9,63 @@ Distributed under the Boost Software License, Version 1.0.
 #include <boost/core/lightweight_test.hpp>
 
 struct empty {
-    operator bool() const {
-        return false;
+    int value() const {
+        return 1;
     }
-    operator bool() {
-        return true;
+    int value() {
+        return 2;
     }
 };
 
 class type {
 public:
-    type()
-        : value_(false) { }
-    explicit type(bool value)
-        : value_(value) { }
-    operator bool() const {
-        return value_;
+    explicit type(int count)
+        : value_(count) { }
+    int value() const {
+        return value_ + 1;
+    }
+    int value() {
+        return value_ + 2;
     }
 private:
-    bool value_;
+    int value_;
 };
 
-void test_bool()
+void test_int()
 {
-    const boost::empty_value<bool> v1(boost::empty_init_t(), true);
-    BOOST_TEST(v1.get());
-    boost::empty_value<bool> v2 = boost::empty_init_t();
-    BOOST_TEST(!v2.get());
+    const boost::empty_value<int> v1(boost::empty_init_t(), 7);
+    BOOST_TEST(v1.get() == 7);
+    boost::empty_value<int> v2 = boost::empty_init_t();
+    BOOST_TEST(v2.get() == 0);
     v2 = v1;
-    BOOST_TEST(v2.get());
-    v2.get() = false;
-    BOOST_TEST(!v2.get());
+    BOOST_TEST(v2.get() == 7);
+    v2.get() = 8;
+    BOOST_TEST(v2.get() == 8);
 }
 
 void test_empty()
 {
-    empty e;
-    const boost::empty_value<empty> v1(boost::empty_init_t(), e);
-    BOOST_TEST(!v1.get());
+    const boost::empty_value<empty> v1 = boost::empty_init_t();
+    BOOST_TEST(v1.get().value() == 1);
     boost::empty_value<empty> v2;
-    BOOST_TEST(v2.get());
-    v2 = v1;
-    BOOST_TEST(v2.get());
-    v2.get() = empty();
-    BOOST_TEST(v2.get());
+    BOOST_TEST(v2.get().value() == 2);
 }
 
 void test_type()
 {
-    const boost::empty_value<type> v1(boost::empty_init_t(), true);
-    BOOST_TEST(v1.get());
-    boost::empty_value<type> v2;
-    BOOST_TEST(!v2.get());
+    const boost::empty_value<type> v1(boost::empty_init_t(), 2);
+    BOOST_TEST(v1.get().value() == 3);
+    boost::empty_value<type> v2(boost::empty_init_t(), 3);
+    BOOST_TEST(v2.get().value() == 5);
     v2 = v1;
-    BOOST_TEST(v2.get());
-    v2.get() = type();
-    BOOST_TEST(!v2.get());
+    BOOST_TEST(v2.get().value() == 4);
+    v2.get() = type(4);
+    BOOST_TEST(v2.get().value() == 6);
 }
 
 int main()
 {
-    test_bool();
+    test_int();
     test_empty();
     test_type();
     return boost::report_errors();

test/explicit_operator_bool_noexcept.cpp

@@ -18,7 +18,7 @@
 
 #if !defined(BOOST_NO_CXX11_NOEXCEPT)
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 #include <boost/utility/explicit_operator_bool.hpp>
 
 namespace {

test/first_scalar_constexpr_test.cpp

@@ -0,0 +1,19 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX14_CONSTEXPR)
+#include <boost/core/first_scalar.hpp>
+#include <boost/static_assert.hpp>
+
+static int i1 = 0;
+BOOST_STATIC_ASSERT(boost::first_scalar(&i1) == &i1);
+static int i2[4] = { };
+BOOST_STATIC_ASSERT(boost::first_scalar(i2) == &i2[0]);
+static int i3[2][4][6] = { };
+BOOST_STATIC_ASSERT(boost::first_scalar(i3) == &i3[0][0][0]);
+#endif

test/first_scalar_test.cpp

@@ -0,0 +1,20 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/first_scalar.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+int main()
+{
+    int i1 = 0;
+    BOOST_TEST_EQ(boost::first_scalar(&i1), &i1);
+    int i2[4] = { };
+    BOOST_TEST_EQ(boost::first_scalar(i2), &i2[0]);
+    int i3[2][4][6] = { };
+    BOOST_TEST_EQ(boost::first_scalar(i3), &i3[0][0][0]);
+    return boost::report_errors();
+}

test/lightweight_test_all_eq_test.cpp

@@ -120,5 +120,5 @@ int main()
         ++test_cases;
     }
 
-    return !boost::report_errors();
+    return boost::report_errors() == test_cases;
 }

test/lightweight_test_all_with_fail.cpp

@@ -101,5 +101,5 @@ int main()
     test_cases += fail_vector();
     test_cases += fail_tolerance_predicate();
 
-    return !boost::report_errors();
+    return boost::report_errors() == test_cases;
 }

test/lightweight_test_bool.cpp

@@ -0,0 +1,63 @@
+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/core/lightweight_test.hpp>
+#include <vector>
+
+int main()
+{
+    BOOST_TEST( BOOST_TEST( true ) );
+    BOOST_TEST_NOT( BOOST_TEST( false ) );
+
+    BOOST_TEST( BOOST_TEST_NOT( false ) );
+    BOOST_TEST_NOT( BOOST_TEST_NOT( true ) );
+
+    BOOST_TEST( BOOST_TEST_EQ( 1, 1 ) );
+    BOOST_TEST_NOT( BOOST_TEST_EQ( 1, 2 ) );
+
+    BOOST_TEST( BOOST_TEST_NE( 1, 2 ) );
+    BOOST_TEST_NOT( BOOST_TEST_NE( 1, 1 ) );
+
+    BOOST_TEST( BOOST_TEST_LT( 1, 2 ) );
+    BOOST_TEST_NOT( BOOST_TEST_LT( 1, 1 ) );
+
+    BOOST_TEST( BOOST_TEST_LE( 1, 1 ) );
+    BOOST_TEST_NOT( BOOST_TEST_LE( 2, 1 ) );
+
+    BOOST_TEST( BOOST_TEST_GT( 2, 1 ) );
+    BOOST_TEST_NOT( BOOST_TEST_GT( 1, 1 ) );
+
+    BOOST_TEST( BOOST_TEST_GE( 1, 1 ) );
+    BOOST_TEST_NOT( BOOST_TEST_GE( 1, 2 ) );
+
+    BOOST_TEST( BOOST_TEST_CSTR_EQ( "1", "1" ) );
+    BOOST_TEST_NOT( BOOST_TEST_CSTR_EQ( "1", "2" ) );
+
+    BOOST_TEST( BOOST_TEST_CSTR_NE( "1", "2" ) );
+    BOOST_TEST_NOT( BOOST_TEST_CSTR_NE( "1", "1" ) );
+
+    std::vector<int> v1;
+    v1.push_back( 1 );
+
+    std::vector<int> v2;
+
+    BOOST_TEST( BOOST_TEST_ALL_EQ(v1.begin(), v1.end(), v1.begin(), v1.end()) );
+    BOOST_TEST_NOT( BOOST_TEST_ALL_EQ(v1.begin(), v1.end(), v2.begin(), v2.end()) );
+
+    BOOST_TEST( BOOST_TEST_ALL_WITH(v1.begin(), v1.end(), v1.begin(), v1.end(), boost::detail::lw_test_eq()) );
+    BOOST_TEST_NOT( BOOST_TEST_ALL_WITH(v1.begin(), v1.end(), v2.begin(), v2.end(), boost::detail::lw_test_eq()) );
+
+    int const * p = 0;
+
+    BOOST_TEST( p == 0 ) || BOOST_TEST_EQ( *p, 0 );
+    BOOST_TEST( p != 0 ) && BOOST_TEST_EQ( *p, 0 );
+
+    int x = 0;
+    p = &x;
+
+    BOOST_TEST( p == 0 ) || BOOST_TEST_EQ( *p, 0 );
+    BOOST_TEST( p != 0 ) && BOOST_TEST_EQ( *p, 0 );
+
+    return boost::report_errors() == 14? 0: 1;
+}

test/lightweight_test_eq_nullptr.cpp

@@ -8,8 +8,12 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
-#include <boost/config.hpp>
+#if defined(_MSC_VER)
+# pragma warning( disable: 4100 ) // nullptr_t parameter unrereferenced
+#endif
+
 #include <boost/core/lightweight_test.hpp>
+#include <boost/config.hpp>
 
 int main()
 {

test/lightweight_test_fail.cpp

@@ -8,7 +8,7 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 int main()
 {

test/lightweight_test_fail12.cpp

@@ -0,0 +1,68 @@
+//
+// Negative test for BOOST_TEST_TRAIT_SAME
+//
+// Copyright 2014, 2019 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/core/lightweight_test_trait.hpp>
+#include <boost/config.hpp>
+
+struct X
+{
+    typedef int type;
+};
+
+template<class T1, class T2> struct Y
+{
+    typedef T1 type;
+};
+
+typedef int I1;
+typedef const int I2;
+typedef volatile int I3;
+typedef const volatile int I4;
+typedef int& I5;
+typedef const int& I6;
+typedef volatile int& I7;
+typedef const volatile int& I8;
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+typedef int&& I9;
+typedef const int&& I10;
+typedef volatile int&& I11;
+typedef const volatile int&& I12;
+#endif
+
+int main()
+{
+    BOOST_TEST_TRAIT_SAME(char[1], char[2]);
+    BOOST_TEST_TRAIT_SAME(char[1], char[]);
+    BOOST_TEST_TRAIT_SAME(char[1], char*);
+    BOOST_TEST_TRAIT_SAME(void(), void(int));
+    BOOST_TEST_TRAIT_SAME(void(), void(*)());
+    BOOST_TEST_TRAIT_SAME(X, void);
+    BOOST_TEST_TRAIT_SAME(X::type, void);
+    BOOST_TEST_TRAIT_SAME(X, Y<void, void>);
+    BOOST_TEST_TRAIT_SAME(X::type, Y<float, int>::type);
+    BOOST_TEST_TRAIT_SAME(Y<int, float>, Y<int, double>);
+    BOOST_TEST_TRAIT_SAME(I1, I2);
+    BOOST_TEST_TRAIT_SAME(I3, I4);
+    BOOST_TEST_TRAIT_SAME(I5, I6);
+    BOOST_TEST_TRAIT_SAME(I7, I8);
+
+    int expected = 14;
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
+    BOOST_TEST_TRAIT_SAME(I9, I10);
+    BOOST_TEST_TRAIT_SAME(I11, I12);
+
+    expected += 2;
+
+#endif
+
+    return boost::report_errors() == expected;
+}

test/lightweight_test_fail13.cpp

@@ -0,0 +1,19 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/lightweight_test.hpp>
+
+void f()
+{
+    throw 5;
+}
+
+int main()
+{
+    BOOST_TEST_NO_THROW(f());
+    return boost::report_errors();
+}

test/lightweight_test_fail14.cpp

@@ -0,0 +1,26 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/core/lightweight_test.hpp>
+
+struct error
+    : std::exception {
+    const char* what() const BOOST_NOEXCEPT_OR_NOTHROW BOOST_OVERRIDE {
+        return "message";
+    }
+};
+
+void f()
+{
+    throw error();
+}
+
+int main()
+{
+    BOOST_TEST_NO_THROW(f());
+    return boost::report_errors();
+}

test/lightweight_test_fail2.cpp

@@ -8,7 +8,7 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 int main()
 {

test/lightweight_test_fail3.cpp

@@ -8,7 +8,7 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 int main()
 {

test/lightweight_test_fail4.cpp

@@ -8,7 +8,7 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 int main()
 {

test/lightweight_test_fail5.cpp

@@ -8,7 +8,7 @@
 // http://www.boost.org/LICENSE_1_0.txt
 //
 
-#include <boost/detail/lightweight_test.hpp>
+#include <boost/core/lightweight_test.hpp>
 
 struct X
 {