MinGW doesn't have _exit either

Merge branch 'develop' into feature/Exit
Use _exit instead of _Exit on MinGW
2018-09-05 08:39:35 +03:00 · 2018-09-05 07:24:23 +03:00 · 2018-09-05 07:17:58 +03:00 · 2018-09-05 00:16:17 -04:00 · 2018-09-05 07:01:29 +03:00 · 2018-09-05 06:56:59 +03:00
28 changed files with 1415 additions and 865 deletions
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,14 +6,13 @@ language: cpp

 sudo: false

-os:
-  - linux
-  - osx
+python: "2.7"

 branches:
  only:
    - master
    - develop
+    - /feature\/.*/

 env:
  matrix:
@@ -26,10 +25,32 @@ matrix:

  include:
    - os: linux
-      env: TOOLSET=gcc COMPILER=g++ CXXSTD=c++03
+      compiler: g++
+      env: TOOLSET=gcc COMPILER=g++ CXXSTD=03,11

    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=c++03
+      compiler: g++-4.4
+      env: TOOLSET=gcc COMPILER=g++-4.4 CXXSTD=98,0x
+      addons:
+        apt:
+          packages:
+            - g++-4.4
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-4.6
+      env: TOOLSET=gcc COMPILER=g++-4.6 CXXSTD=03,0x
+      addons:
+        apt:
+          packages:
+            - g++-4.6
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      compiler: g++-4.7
+      env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=03,11
      addons:
        apt:
          packages:
@@ -38,16 +59,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - g++-4.7
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=c++03
+      compiler: g++-4.8
+      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=03,11
      addons:
        apt:
          packages:
@@ -56,16 +69,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - g++-4.8
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=c++03
+      compiler: g++-4.9
+      env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=03,11
      addons:
        apt:
          packages:
@@ -74,16 +79,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - g++-4.9
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++03
+      compiler: g++-5
+      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
@@ -92,61 +89,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - g++-5
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++14
-      addons:
-        apt:
-          packages:
-            - g++-5
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++1z
-      addons:
-        apt:
-          packages:
-            - g++-5
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++03
-      addons:
-        apt:
-          packages:
-            - g++-6
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - g++-6
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++14
-      addons:
-        apt:
-          packages:
-            - g++-6
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++1z
+      compiler: g++-6
+      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
@@ -157,7 +101,7 @@ matrix:
    - os: linux
      dist: trusty
      compiler: g++-7
-      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=c++03
+      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=03,11,14,17
      addons:
        apt:
          packages:
@@ -166,106 +110,44 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      dist: trusty
-      compiler: g++-7
-      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=c++11
+      compiler: g++-8
+      env: TOOLSET=gcc COMPILER=g++-8 CXXSTD=03,11,14,17
      addons:
        apt:
          packages:
-            - g++-7
+            - g++-8
          sources:
            - ubuntu-toolchain-r-test

    - os: linux
-      dist: trusty
-      compiler: g++-7
-      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=c++14
+      compiler: clang++
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11
+
+    - os: linux
+      compiler: clang++-3.5
+      env: TOOLSET=clang COMPILER=clang++-3.5 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
-            - g++-7
+            - clang-3.5
+            - libstdc++-4.9-dev
          sources:
            - ubuntu-toolchain-r-test

    - os: linux
-      dist: trusty
-      compiler: g++-7
-      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=c++17
-      addons:
-        apt:
-          packages:
-            - g++-7
-          sources:
-            - ubuntu-toolchain-r-test
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++03
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++11
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=c++03
+      compiler: clang++-3.6
+      env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
            - clang-3.6
+            - libstdc++-4.9-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.6

    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - clang-3.6
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.6
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=c++03
-      addons:
-        apt:
-          packages:
-            - clang-3.7
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.7
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - clang-3.7
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.7
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++03
-      addons:
-        apt:
-          packages:
-            - clang-3.8
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.8
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - clang-3.8
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.8
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++14
+      compiler: clang++-3.8
+      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
@@ -273,44 +155,10 @@ matrix:
            - libstdc++-4.9-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.8
-
-    - os: linux
-      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++1z
-      addons:
-        apt:
-          packages:
-            - clang-3.8
-            - libstdc++-4.9-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.8

    - os: linux
      compiler: clang++-3.9
-      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=c++03
-      addons:
-        apt:
-          packages:
-            - clang-3.9
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.9
-
-    - os: linux
-      compiler: clang++-3.9
-      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=c++11
-      addons:
-        apt:
-          packages:
-            - clang-3.9
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.9
-
-    - os: linux
-      compiler: clang++-3.9
-      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=c++14
+      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
@@ -318,23 +166,10 @@ matrix:
            - libstdc++-4.9-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.9
-
-    - os: linux
-      compiler: clang++-3.9
-      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=c++1z
-      addons:
-        apt:
-          packages:
-            - clang-3.9
-            - libstdc++-4.9-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.9

    - os: linux
      compiler: clang++-4.0
-      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=c++03
+      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
@@ -344,53 +179,43 @@ matrix:
            - llvm-toolchain-trusty-4.0

    - os: linux
-      compiler: clang++-4.0
-      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=c++11
+      compiler: clang++-5.0
+      env: TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
-            - clang-4.0
+            - clang-5.0
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-4.0
+            - llvm-toolchain-trusty-5.0

    - os: linux
-      compiler: clang++-4.0
-      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=c++14
+      compiler: clang++-6.0
+      env: TOOLSET=clang COMPILER=clang++-6.0 CXXSTD=03,11,14,17
      addons:
        apt:
          packages:
-            - clang-4.0
+            - clang-6.0
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-4.0
+            - llvm-toolchain-trusty-6.0

    - os: linux
-      compiler: clang++-4.0
-      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=c++1z
+      compiler: clang++-libc++
+      env: TOOLSET=clang COMPILER=clang++-libc++ CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
-            - clang-4.0
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-4.0
+            - libc++-dev

    - os: osx
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++03
-
-    - os: osx
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++11
-
-    - os: osx
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++14
-
-    - os: osx
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++1z
+      compiler: clang++
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z

 install:
+  - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
  - cd ..
-  - git clone -b $TRAVIS_BRANCH https://github.com/boostorg/boost.git boost-root
+  - git clone -b $BOOST_BRANCH https://github.com/boostorg/boost.git boost-root
  - cd boost-root
  - git submodule init libs/assert
  - git submodule init libs/config
@@ -405,8 +230,8 @@ install:

 script:
  - |-
-    echo "using $TOOLSET : : $COMPILER : <cxxflags>-std=$CXXSTD ;" > ~/user-config.jam
-  - ./b2 libs/core/test toolset=$TOOLSET
+    echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
+  - ./b2 -j 3 libs/core/test toolset=$TOOLSET cxxstd=$CXXSTD

 notifications:
  email:
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,49 +10,40 @@ branches:
  only:
    - master
    - develop
+    - /feature\/.*/

 environment:
  matrix:
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      TOOLSET: msvc-9.0
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      TOOLSET: msvc-10.0
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      TOOLSET: msvc-11.0
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      TOOLSET: msvc-12.0
+      TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0,msvc-12.0
+
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\cygwin\bin;
      TOOLSET: gcc
-      CXXFLAGS: cxxflags=-std=c++03
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      ADDPATH: C:\cygwin\bin;
-      TOOLSET: gcc
-      CXXFLAGS: cxxflags=-std=c++11
+      CXXSTD: 03,11
+
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\mingw\bin;
      TOOLSET: gcc
-      CXXFLAGS: cxxflags=-std=c++03
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      ADDPATH: C:\mingw\bin;
-      TOOLSET: gcc
-      CXXFLAGS: cxxflags=-std=c++11
+      CXXSTD: 03,11
+
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
      ADDPATH: C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin;
      TOOLSET: gcc
-      CXXFLAGS: cxxflags=-std=c++03
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-      ADDPATH: C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin;
-      TOOLSET: gcc
-      CXXFLAGS: cxxflags=-std=c++11
+      CXXSTD: 03,11
+
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
      TOOLSET: msvc-14.0
+
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
      TOOLSET: msvc-14.1
+      CXXSTD: 14,17

 install:
+  - set BOOST_BRANCH=develop
+  - if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
  - cd ..
-  - git clone -b %APPVEYOR_REPO_BRANCH% https://github.com/boostorg/boost.git boost-root
+  - git clone -b %BOOST_BRANCH% https://github.com/boostorg/boost.git boost-root
  - cd boost-root
  - git submodule init libs/assert
  - git submodule init libs/config
@@ -69,4 +60,5 @@ build: off

 test_script:
  - PATH=%ADDPATH%%PATH%
-  - b2 libs/core/test toolset=%TOOLSET% %CXXFLAGS%
+  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
+  - b2 -j 3 libs/core/test toolset=%TOOLSET% %CXXSTD%
--- a/doc/core.qbk
+++ b/doc/core.qbk
@@ -41,7 +41,9 @@ criteria for inclusion is that the utility component be:
 [include addressof.qbk]
 [include checked_delete.qbk]
 [include demangle.qbk]
+[include empty_value.qbk]
 [include enable_if.qbk]
+[include exchange.qbk]
 [include explicit_operator_bool.qbk]
 [include ignore_unused.qbk]
 [include is_same.qbk]
--- a/doc/empty_value.qbk
+++ b/doc/empty_value.qbk
@@ -0,0 +1,129 @@
+[/
+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)
+]
+
+[section:empty_value empty_value]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+The header <boost/core/empty_value.hpp> provides the class template
+`boost::empty_value` for library authors to conveniently leverage the Empty
+Base Optimization to store objects of potentially empty types.
+
+[endsect]
+
+[section Examples]
+
+The following example shows `boost::empty_value` used to create a type that
+stores a pointer, comparer, and allocator, where the comparer and allocator
+could be empty types.
+
+```
+template<class Ptr, class Compare, class Allocator>
+class storage
+    : empty_value<Compare, 0>
+    , empty_value<Allocator, 1> {
+public:
+    storage()
+        : empty_value<Compare, 0>(empty_init_t())
+        , empty_value<Allocator, 1>(empty_init_t())
+        , ptr_() { }
+
+    storage(const Compare& c, const Allocator& a)
+        : empty_value<Compare, 0>(empty_init_t(), c)
+        , empty_value<Allocator, 1>(empty_init_t(), a)
+        , ptr_() { }
+
+    const Ptr& pointer() const {
+        return ptr_;
+    }
+
+    Ptr& pointer() {
+        return ptr_;
+    }
+
+    const Compare& compare() const {
+        return empty_value<Compare, 0>::get();
+    }
+
+    Compare& compare() {
+        return empty_value<Compare, 0>::get();
+    }
+
+    const Allocator& allocator() const {
+        return empty_value<Allocator, 1>::get();
+    }
+
+    Allocator& allocator() {
+        return empty_value<Allocator, 1>::get();
+    }
+
+private:
+    Ptr ptr_;
+};
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+
+struct empty_init_t { };
+
+template<class T, unsigned Index = 0, bool Empty = ``/see below/``>
+class empty_value {
+public:
+    empty_value() = default;
+
+    template<class... Args>
+    explicit empty_value(empty_init_t, Args&&... args);
+
+    const T& get() const;
+
+    T& get();
+};
+
+} /* boost */
+```
+
+[section Template parameters]
+
+[variablelist
+[[`T`][The type of value to store]]
+[[`Index`][Optional: Specify to create a distinct base type]]
+[[`Empty`][Optional: Specify to force inheritance from type]]]
+
+[endsect]
+
+[section Constructors]
+
+[variablelist
+[[`empty_value() = default;`][Default initialize the value]]
+[[`template<class... Args> empty_value(empty_init_t, Args&&... args);`]
+[Initialize the value with `std::forward<Args>(args)...`]]]
+
+[endsect]
+
+[section Member functions]
+
+[variablelist
+[[`const T& get() const;`][Returns the value]]
+[[`T& get();`][Returns the value]]]
+
+[endsect]
+
+[endsect]
+
+[endsect]
--- a/doc/exchange.qbk
+++ b/doc/exchange.qbk
@@ -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)
+]
+
+[section:exchange exchange]
+
+[simplesect Authors]
+
+* Glen Fernandes
+
+[endsimplesect]
+
+[section Overview]
+
+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.
+
+[endsect]
+
+[section Examples]
+
+The following example shows `boost::exchange` used to simplify the
+implementation of a move constructor.
+
+```
+Node(Node&& other)
+  : head_(boost::exchange(other.head_, nullptr))
+  , tail_(boost::exchange(other.tail_, nullptr)) { }
+```
+
+[endsect]
+
+[section Reference]
+
+```
+namespace boost {
+  template<class T, class U = T>
+  constexpr T exchange(T& t, U&& u);
+}
+```
+[section Functions]
+
+[*`template<class T, class U = T> constexpr T exchange(T& t, U&& u);`]
+
+Equivalent to:
+
+```
+T v = std::move(t);
+t = std::forward<U>(u);
+return v;
+```
+
+[endsect]
+
+[endsect]
+
+[endsect]
--- a/doc/pointer_traits.qbk
+++ b/doc/pointer_traits.qbk
@@ -1,5 +1,5 @@
 [/
-Copyright 2017 Glen Joseph Fernandes
+Copyright 2017-2018 Glen Joseph Fernandes
 (glenjofe@gmail.com)

 Distributed under the Boost Software License, Version 1.0.
@@ -20,8 +20,10 @@ The header <boost/core/pointer_traits.hpp> provides the class template
 `boost::pointer_traits` to facilitate use of pointer-like types. The C++11
 standard library introduced `std::pointer_traits` along with an allocator
 model which supported pointer-like types in addition to plain raw pointers.
-This implementation also supports C++98, and adds additional functionality
-for obtaining raw pointers from pointers.
+This implementation also supports C++98.
+
+It also provides the function template `boost::to_address` to obtain a raw
+pointer from an object of any pointer-like type.

 [endsect]

@@ -54,7 +56,6 @@ namespace boost {
    template<class U> using rebind = typename rebind_to<U>::type;

    static pointer pointer_to(``['see below]`` v);
-    static element_type* to_address(const pointer& v) noexcept;
  };

  template<class T> struct pointer_traits<T*> {
@@ -66,11 +67,13 @@ namespace boost {
    template<class U> using rebind = typename rebind_to<U>::type;

    static pointer pointer_to(``['see below]`` v) noexcept;
-    static element_type* to_address(pointer v) noexcept;
  };

  template<class T>
-  typename pointer_traits<T>::element_type* to_address(const T& v) noexcept;
+  constexpr T* to_address(T* v) noexcept;
+
+  template<class T>
+  auto to_address(const T& v) noexcept;
 }
 ```

@@ -93,39 +96,45 @@ namespace boost {

 [section Member functions]

-[variablelist pointer_traits
-[[`static pointer pointer_to(`['see below] `v);`]
+[variablelist
+[[`static pointer pointer_traits::pointer_to(`['see below] `v);`]
 [[variablelist
 [[Remark]
 [If `element_type` is a void type, the type of `v` is unspecified; otherwise,
  it is `element_type&`.]]
 [[Returns]
 [A pointer to `v` obtained by calling `T::pointer_to(v)`.]]]]]
-[[`static element_type* to_address(const pointer& v) noexcept;`]
-[[variablelist
-[[Requires] [`v` is not a null pointer.]]
-[[Returns]
-[A pointer of type `element_type*` that references the same location
-  as the argument.]]]]]]
-
-[variablelist pointer_traits<T*>
-[[`static pointer pointer_to(`['see below] `v) noexcept;`]
+[[`static pointer pointer_traits<T*>::pointer_to(`['see below] `v) noexcept;`]
 [[variablelist
 [[Remark]
 [If `element_type` is a void type, the type of `v` is unspecified; otherwise,
  it is `element_type&`.]]
-[[Returns] [The result of `boost::addressof(v)`.]]]]]
+[[Returns] [`addressof(v)`.]]]]]]
+
+[endsect]
+
+[section Optional members]
+
+[variablelist
 [[`static element_type* to_address(pointer v) noexcept;`]
-[[variablelist [[Returns] [The value of `v`.]]]]]]
+[[variablelist
+[[Returns]
+[A pointer of type `element_type*` that references the same location as the
+  argument `p`.]]
+[[Note]
+[This function should be the inverse of `pointer_to`. If defined, it
+  customizes the behavior of the non-member function `to_address`.]]]]]]

 [endsect]

 [section Free functions]

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

 [endsect]

@@ -133,8 +142,8 @@ namespace boost {

 [section Acknowledgments]

-Glen Fernandes implemented `pointer_traits` with reviews and guidance from
-Peter Dimov.
+Glen Fernandes implemented `pointer_traits` and `to_address` with reviews and
+guidance from Peter Dimov.

 [endsect]

--- a/include/boost/core/addressof.hpp
+++ b/include/boost/core/addressof.hpp
@@ -49,20 +49,20 @@ namespace boost {
 namespace detail {

 template<class T>
-class addressof_ref {
+class addrof_ref {
 public:
-    BOOST_FORCEINLINE addressof_ref(T& o) BOOST_NOEXCEPT
+    BOOST_FORCEINLINE addrof_ref(T& o) BOOST_NOEXCEPT
        : o_(o) { }
    BOOST_FORCEINLINE operator T&() const BOOST_NOEXCEPT {
        return o_;
    }
 private:
-    addressof_ref& operator=(const addressof_ref&);
+    addrof_ref& operator=(const addrof_ref&);
    T& o_;
 };

 template<class T>
-struct address_of {
+struct addrof {
    static BOOST_FORCEINLINE T* get(T& o, long) BOOST_NOEXCEPT {
        return reinterpret_cast<T*>(&
            const_cast<char&>(reinterpret_cast<const volatile char&>(o)));
@@ -76,38 +76,38 @@ struct address_of {
 #if !defined(BOOST_NO_CXX11_DECLTYPE) && \
    (defined(__INTEL_COMPILER) || \
        (defined(__clang__) && !defined(_LIBCPP_VERSION)))
-typedef decltype(nullptr) addressof_null_t;
+typedef decltype(nullptr) addrof_null_t;
 #else
-typedef std::nullptr_t addressof_null_t;
+typedef std::nullptr_t addrof_null_t;
 #endif

 template<>
-struct address_of<addressof_null_t> {
-    typedef addressof_null_t type;
+struct addrof<addrof_null_t> {
+    typedef addrof_null_t type;
    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
        return &o;
    }
 };

 template<>
-struct address_of<const addressof_null_t> {
-    typedef const addressof_null_t type;
+struct addrof<const addrof_null_t> {
+    typedef const addrof_null_t type;
    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
        return &o;
    }
 };

 template<>
-struct address_of<volatile addressof_null_t> {
-    typedef volatile addressof_null_t type;
+struct addrof<volatile addrof_null_t> {
+    typedef volatile addrof_null_t type;
    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
        return &o;
    }
 };

 template<>
-struct address_of<const volatile addressof_null_t> {
-    typedef const volatile addressof_null_t type;
+struct addrof<const volatile addrof_null_t> {
+    typedef const volatile addrof_null_t type;
    static BOOST_FORCEINLINE type* get(type& o, int) BOOST_NOEXCEPT {
        return &o;
    }
@@ -127,9 +127,9 @@ addressof(T& o) BOOST_NOEXCEPT
 {
 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x610)) || \
    BOOST_WORKAROUND(__SUNPRO_CC, <= 0x5120)
-    return detail::address_of<T>::get(o, 0);
+    return boost::detail::addrof<T>::get(o, 0);
 #else
-    return detail::address_of<T>::get(detail::addressof_ref<T>(o), 0);
+    return boost::detail::addrof<T>::get(boost::detail::addrof_ref<T>(o), 0);
 #endif
 }

@@ -137,14 +137,14 @@ addressof(T& o) BOOST_NOEXCEPT
 namespace detail {

 template<class T>
-struct addressof_result {
+struct addrof_result {
    typedef T* type;
 };

 } /* detail */

 template<class T, std::size_t N>
-BOOST_FORCEINLINE typename detail::addressof_result<T[N]>::type
+BOOST_FORCEINLINE typename boost::detail::addrof_result<T[N]>::type
 addressof(T (&o)[N]) BOOST_NOEXCEPT
 {
    return &o;
@@ -170,79 +170,79 @@ const T (*addressof(const T (&o)[N]) BOOST_NOEXCEPT)[N]
 namespace detail {

 template<class T>
-T addressof_declval() BOOST_NOEXCEPT;
+T addrof_declval() BOOST_NOEXCEPT;

 template<class>
-struct addressof_void {
+struct addrof_void {
    typedef void type;
 };

 template<class T, class E = void>
-struct addressof_member_operator {
+struct addrof_member_operator {
    static constexpr bool value = false;
 };

 template<class T>
-struct addressof_member_operator<T, typename
-    addressof_void<decltype(addressof_declval<T&>().operator&())>::type> {
+struct addrof_member_operator<T, typename
+    addrof_void<decltype(addrof_declval<T&>().operator&())>::type> {
    static constexpr bool value = true;
 };

 #if BOOST_WORKAROUND(BOOST_INTEL, < 1600)
-struct addressof_addressable { };
+struct addrof_addressable { };

-addressof_addressable*
-operator&(addressof_addressable&) BOOST_NOEXCEPT;
+addrof_addressable*
+operator&(addrof_addressable&) BOOST_NOEXCEPT;
 #endif

 template<class T, class E = void>
-struct addressof_non_member_operator {
+struct addrof_non_member_operator {
    static constexpr bool value = false;
 };

 template<class T>
-struct addressof_non_member_operator<T, typename
-    addressof_void<decltype(operator&(addressof_declval<T&>()))>::type> {
+struct addrof_non_member_operator<T, typename
+    addrof_void<decltype(operator&(addrof_declval<T&>()))>::type> {
    static constexpr bool value = true;
 };

 template<class T, class E = void>
-struct addressof_expression {
+struct addrof_expression {
    static constexpr bool value = false;
 };

 template<class T>
-struct addressof_expression<T,
-    typename addressof_void<decltype(&addressof_declval<T&>())>::type> {
+struct addrof_expression<T,
+    typename addrof_void<decltype(&addrof_declval<T&>())>::type> {
    static constexpr bool value = true;
 };

 template<class T>
-struct addressof_is_constexpr {
-    static constexpr bool value = addressof_expression<T>::value &&
-        !addressof_member_operator<T>::value &&
-        !addressof_non_member_operator<T>::value;
+struct addrof_is_constexpr {
+    static constexpr bool value = addrof_expression<T>::value &&
+        !addrof_member_operator<T>::value &&
+        !addrof_non_member_operator<T>::value;
 };

 template<bool E, class T>
-struct addressof_if { };
+struct addrof_if { };

 template<class T>
-struct addressof_if<true, T> {
+struct addrof_if<true, T> {
    typedef T* type;
 };

 template<class T>
 BOOST_FORCEINLINE
-typename addressof_if<!addressof_is_constexpr<T>::value, T>::type
+typename addrof_if<!addrof_is_constexpr<T>::value, T>::type
 addressof(T& o) BOOST_NOEXCEPT
 {
-    return address_of<T>::get(addressof_ref<T>(o), 0);
+    return addrof<T>::get(addrof_ref<T>(o), 0);
 }

 template<class T>
 constexpr BOOST_FORCEINLINE
-typename addressof_if<addressof_is_constexpr<T>::value, T>::type
+typename addrof_if<addrof_is_constexpr<T>::value, T>::type
 addressof(T& o) BOOST_NOEXCEPT
 {
    return &o;
@@ -254,7 +254,7 @@ template<class T>
 constexpr BOOST_FORCEINLINE T*
 addressof(T& o) BOOST_NOEXCEPT
 {
-    return detail::addressof(o);
+    return boost::detail::addressof(o);
 }
 #endif

--- a/include/boost/core/empty_value.hpp
+++ b/include/boost/core/empty_value.hpp
@@ -0,0 +1,125 @@
+/*
+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)
+*/
+#ifndef BOOST_CORE_EMPTY_VALUE_HPP
+#define BOOST_CORE_EMPTY_VALUE_HPP
+
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#include <utility>
+#endif
+
+#if defined(BOOST_GCC_VERSION) && (BOOST_GCC_VERSION >= 40700)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#elif defined(BOOST_INTEL) && defined(_MSC_VER) && (_MSC_VER >= 1800)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#elif defined(BOOST_MSVC) && (BOOST_MSVC >= 1800)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#elif defined(BOOST_CLANG) && !defined(__CUDACC__)
+#if __has_feature(is_empty) && __has_feature(is_final)
+#define BOOST_DETAIL_EMPTY_VALUE_BASE
+#endif
+#endif
+
+namespace boost {
+
+template<class T>
+struct use_empty_value_base {
+    enum {
+#if defined(BOOST_DETAIL_EMPTY_VALUE_BASE)
+        value = __is_empty(T) && !__is_final(T)
+#else
+        value = false
+#endif
+    };
+};
+
+struct empty_init_t { };
+
+template<class T, unsigned N = 0, bool E = use_empty_value_base<T>::value>
+class empty_value {
+public:
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
+    empty_value() = default;
+#else
+    empty_value() { }
+#endif
+
+    empty_value(empty_init_t)
+        : value_() { }
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    template<class... Args>
+    explicit empty_value(empty_init_t, Args&&... args)
+        : value_(std::forward<Args>(args)...) { }
+#else
+    template<class U>
+    empty_value(empty_init_t, U&& value)
+        : value_(std::forward<U>(value)) { }
+#endif
+#else
+    template<class U>
+    empty_value(empty_init_t, const U& value)
+        : value_(value) { }
+#endif
+
+    const T& get() const BOOST_NOEXCEPT {
+        return value_;
+    }
+
+    T& get() BOOST_NOEXCEPT {
+        return value_;
+    }
+
+private:
+    T value_;
+};
+
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+template<class T, unsigned N>
+class empty_value<T, N, true>
+    : T {
+public:
+#if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)
+    empty_value() = default;
+#else
+    empty_value() { }
+#endif
+
+    empty_value(empty_init_t)
+        : T() { }
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+    template<class... Args>
+    explicit empty_value(empty_init_t, Args&&... args)
+        : T(std::forward<Args>(args)...) { }
+#else
+    template<class U>
+    empty_value(empty_init_t, U&& value)
+        : T(std::forward<U>(value)) { }
+#endif
+#else
+    template<class U>
+    empty_value(empty_init_t, const U& value)
+        : T(value) { }
+#endif
+
+    const T& get() const BOOST_NOEXCEPT {
+        return *this;
+    }
+
+    T& get() BOOST_NOEXCEPT {
+        return *this;
+    }
+};
+#endif
+
+} /* boost */
+
+#endif
--- a/include/boost/core/exchange.hpp
+++ b/include/boost/core/exchange.hpp
@@ -0,0 +1,49 @@
+/*
+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)
+*/
+#ifndef BOOST_CORE_EXCHANGE_HPP
+#define BOOST_CORE_EXCHANGE_HPP
+
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#include <boost/config/workaround.hpp>
+#include <utility>
+#endif
+
+namespace boost {
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+template<class T, class U>
+inline T exchange(T& t, const U& u)
+{
+    T v = t;
+    t = u;
+    return v;
+}
+#else
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1800)
+template<class T, class U>
+inline T exchange(T& t, U&& u)
+{
+    T v = std::move(t);
+    t = std::forward<U>(u);
+    return v;
+}
+#else
+template<class T, class U = T>
+BOOST_CXX14_CONSTEXPR inline T exchange(T& t, U&& u)
+{
+    T v = std::move(t);
+    t = std::forward<U>(u);
+    return v;
+}
+#endif
+#endif
+
+} /* boost */
+
+#endif
--- a/include/boost/core/explicit_operator_bool.hpp
+++ b/include/boost/core/explicit_operator_bool.hpp
@@ -19,6 +19,7 @@
 #define BOOST_CORE_EXPLICIT_OPERATOR_BOOL_HPP

 #include <boost/config.hpp>
+#include <boost/config/workaround.hpp>

 #ifdef BOOST_HAS_PRAGMA_ONCE
 #pragma once
@@ -52,6 +53,8 @@
        return !this->operator! ();\
    }

+#if !BOOST_WORKAROUND(BOOST_GCC, < 40700)
+
 /*!
 * \brief The macro defines a constexpr explicit operator of conversion to \c bool
 *
@@ -65,6 +68,12 @@
        return !this->operator! ();\
    }

+#else
+
+#define BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL() BOOST_EXPLICIT_OPERATOR_BOOL_NOEXCEPT()
+
+#endif
+
 #else // !defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS)

 #if (defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x530)) && !defined(BOOST_NO_COMPILER_CONFIG)
--- a/include/boost/core/lightweight_test.hpp
+++ b/include/boost/core/lightweight_test.hpp
@@ -14,16 +14,19 @@
 //  Copyright (2) Beman Dawes 2010, 2011
 //  Copyright (3) Ion Gaztanaga 2013
 //
+//  Copyright 2018 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/no_exceptions_support.hpp>
-#include <boost/assert.hpp>
 #include <boost/current_function.hpp>
 #include <iostream>
 #include <iterator>
+#include <cstdlib>
 #include <cstring>
 #include <cstddef>

@@ -39,29 +42,52 @@ namespace boost
 namespace detail
 {

-struct report_errors_reminder
-{
-    bool called_report_errors_function;
-
-    report_errors_reminder() : called_report_errors_function(false) {}
-
-    ~report_errors_reminder()
-    {
-        BOOST_ASSERT(called_report_errors_function);  // verify report_errors() was called  
+class test_result {
+public:
+    test_result()
+        : report_(false)
+        , errors_(0) {
+#if defined(_MSC_VER)
+        ::_set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
+#endif
    }
+
+    ~test_result() {
+        if (!report_) {
+            BOOST_LIGHTWEIGHT_TEST_OSTREAM << "main() should return report_errors()" << std::endl;
+
+#if defined(_MSC_VER)
+            ::_exit( 3 );
+#elif defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
+            std::abort();
+#else
+            ::_Exit( 3 );
+#endif
+        }
+    }
+
+    int& errors() {
+        return errors_;
+    }
+
+    void done() {
+        report_ = true;
+    }
+
+private:
+    bool report_;
+    int errors_;
 };

-inline report_errors_reminder& report_errors_remind()
+inline test_result& test_results()
 {
-    static report_errors_reminder r;
-    return r;
+    static test_result instance;
+    return instance;
 }

-inline int & test_errors()
+inline int& test_errors()
 {
-    static int x = 0;
-    report_errors_remind();
-    return x;
+    return test_results().errors();
 }

 inline void test_failed_impl(char const * expr, char const * file, int line, char const * function)
@@ -69,7 +95,7 @@ inline void test_failed_impl(char const * expr, char const * file, int line, cha
    BOOST_LIGHTWEIGHT_TEST_OSTREAM
      << file << "(" << line << "): test '" << expr << "' failed in function '"
      << function << "'" << std::endl;
-    ++test_errors();
+    ++test_results().errors();
 }

 inline void error_impl(char const * msg, char const * file, int line, char const * function)
@@ -77,7 +103,7 @@ inline void error_impl(char const * msg, char const * file, int line, char const
    BOOST_LIGHTWEIGHT_TEST_OSTREAM
      << file << "(" << line << "): " << msg << " in function '"
      << function << "'" << std::endl;
-    ++test_errors();
+    ++test_results().errors();
 }

 inline void throw_failed_impl(char const * excep, char const * file, int line, char const * function)
@@ -85,7 +111,7 @@ inline void throw_failed_impl(char const * excep, char const * file, int line, c
   BOOST_LIGHTWEIGHT_TEST_OSTREAM
    << file << "(" << line << "): Exception '" << excep << "' not thrown in function '"
    << function << "'" << std::endl;
-   ++test_errors();
+   ++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.
@@ -115,108 +141,61 @@ inline const void* test_output_impl(signed char* v) { return v; }
 template<class T> inline const void* test_output_impl(T volatile* v) { return const_cast<T*>(v); }

 #if !defined( BOOST_NO_CXX11_NULLPTR )
-inline const void* test_output_impl(std::nullptr_t v) { return v; }
+inline const void* test_output_impl(std::nullptr_t) { return nullptr; }
 #endif

-template<class T, class U> inline void test_eq_impl( char const * expr1, char const * expr2,
-  char const * file, int line, char const * function, T const & t, U const & u )
-{
-    if( t == u )
-    {
-        report_errors_remind();
-    }
-    else
-    {
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " == " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << test_output_impl(t) << "' != '" << test_output_impl(u) << "'" << std::endl;
-        ++test_errors();
-    }
-}
+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 "=="; }
+};

-template<class T, class U> inline void test_ne_impl( char const * expr1, char const * expr2,
-  char const * file, int line, char const * function, T const & t, U const & u )
-{
-    if( t != u )
-    {
-        report_errors_remind();
-    }
-    else
-    {
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " != " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << test_output_impl(t) << "' == '" << test_output_impl(u) << "'" << std::endl;
-        ++test_errors();
-    }
-}
+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 "!="; }
+};

-template<class T, class U> inline void test_lt_impl( char const * expr1, char const * expr2,
-  char const * file, int line, char const * function, T const & t, U const & u )
-{
-    if( t < u )
-    {
-        report_errors_remind();
-    }
-    else
-    {
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " < " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << test_output_impl(t) << "' >= '" << test_output_impl(u) << "'" << std::endl;
-        ++test_errors();
-    }
-}
+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 "<"; }
+};

-template<class T, class U> inline void test_le_impl( char const * expr1, char const * expr2,
-  char const * file, int line, char const * function, T const & t, U const & u )
-{
-    if( t <= u )
-    {
-        report_errors_remind();
-    }
-    else
-    {
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " <= " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << test_output_impl(t) << "' > '" << test_output_impl(u) << "'" << std::endl;
-        ++test_errors();
-    }
-}
+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 "<="; }
+};

-template<class T, class U> inline void test_gt_impl( char const * expr1, char const * expr2,
-  char const * file, int line, char const * function, T const & t, U const & u )
-{
-    if( t > u )
-    {
-        report_errors_remind();
-    }
-    else
-    {
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " > " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << test_output_impl(t) << "' <= '" << test_output_impl(u) << "'" << std::endl;
-        ++test_errors();
-    }
-}
+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 ">"; }
+};

-template<class T, class U> inline void test_ge_impl( char const * expr1, char const * expr2,
-  char const * file, int line, char const * function, T const & t, U const & u )
+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 ">="; }
+};
+
+template<class BinaryPredicate, class T, class U>
+inline void test_with_impl(BinaryPredicate pred, char const * expr1, char const * expr2,
+                           char const * file, int line, char const * function,
+                           T const & t, U const & u)
 {
-    if( t >= u )
+    if( pred(t, u) )
    {
-        report_errors_remind();
+        test_results();
    }
    else
    {
        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " >= " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << test_output_impl(t) << "' < '" << test_output_impl(u) << "'" << std::endl;
-        ++test_errors();
+            << file << "(" << line << "): test '" << expr1 << " " << pred.op() << " " << expr2
+            << "' ('" << test_output_impl(t) << "' " << pred.op() << " '" << test_output_impl(u)
+            << "') failed in function '" << function << "'" << std::endl;
+        ++test_results().errors();
    }
 }

@@ -225,15 +204,14 @@ inline void test_cstr_eq_impl( char const * expr1, char const * expr2,
 {
    if( std::strcmp(t, u) == 0 )
    {
-        report_errors_remind();
+        test_results();
    }
    else
    {
        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " == " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << t << "' != '" << u << "'" << std::endl;
-        ++test_errors();
+            << file << "(" << line << "): test '" << expr1 << " == " << expr2 << "' ('" << t
+            << "' == '" << u << "') failed in function '" << function << "'" << std::endl;
+        ++test_results().errors();
    }
 }

@@ -242,15 +220,14 @@ inline void test_cstr_ne_impl( char const * expr1, char const * expr2,
 {
    if( std::strcmp(t, u) != 0 )
    {
-        report_errors_remind();
+        test_results();
    }
    else
    {
        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-            << file << "(" << line << "): test '" << expr1 << " == " << expr2
-            << "' failed in function '" << function << "': "
-            << "'" << t << "' == '" << u << "'" << std::endl;
-        ++test_errors();
+            << file << "(" << line << "): test '" << expr1 << " != " << expr2 << "' ('" << t
+            << "' != '" << u << "') failed in function '" << function << "'" << std::endl;
+        ++test_results().errors();
    }
 }

@@ -313,12 +290,12 @@ void test_all_eq_impl(FormattedOutputFunction& output,

    if (error_count == 0)
    {
-        boost::detail::report_errors_remind();
+        test_results();
    }
    else
    {
        output << std::endl;
-        ++boost::detail::test_errors();
+        ++test_results().errors();
    }
 }

@@ -382,12 +359,12 @@ void test_all_with_impl(FormattedOutputFunction& output,

    if (error_count == 0)
    {
-        report_errors_remind();
+        test_results();
    }
    else
    {
        output << std::endl;
-        ++test_errors();
+        ++test_results().errors();
    }
 }

@@ -405,10 +382,10 @@ void test_all_with_impl(FormattedOutputFunction& output,

 inline int report_errors()
 {
-    boost::detail::report_errors_remind().called_report_errors_function = true;
-
-    int errors = boost::detail::test_errors();
+    boost::detail::test_result& result = boost::detail::test_results();
+    result.done();

+    int errors = result.errors();
    if( errors == 0 )
    {
        BOOST_LIGHTWEIGHT_TEST_OSTREAM
@@ -425,18 +402,18 @@ inline int report_errors()

 } // namespace boost

-#define BOOST_TEST(expr) ((expr)? (void)0: ::boost::detail::test_failed_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION))
+#define BOOST_TEST(expr) ((expr)? (void)::boost::detail::test_results(): ::boost::detail::test_failed_impl(#expr, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION))
 #define BOOST_TEST_NOT(expr) BOOST_TEST(!(expr))

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

-#define BOOST_TEST_EQ(expr1,expr2) ( ::boost::detail::test_eq_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
-#define BOOST_TEST_NE(expr1,expr2) ( ::boost::detail::test_ne_impl(#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) )

-#define BOOST_TEST_LT(expr1,expr2) ( ::boost::detail::test_lt_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
-#define BOOST_TEST_LE(expr1,expr2) ( ::boost::detail::test_le_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
-#define BOOST_TEST_GT(expr1,expr2) ( ::boost::detail::test_gt_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
-#define BOOST_TEST_GE(expr1,expr2) ( ::boost::detail::test_ge_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_LT(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_lt(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_LE(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_le(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_GT(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_gt(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
+#define BOOST_TEST_GE(expr1,expr2) ( ::boost::detail::test_with_impl(::boost::detail::lw_test_ge(), #expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )

 #define BOOST_TEST_CSTR_EQ(expr1,expr2) ( ::boost::detail::test_cstr_eq_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
 #define BOOST_TEST_CSTR_NE(expr1,expr2) ( ::boost::detail::test_cstr_ne_impl(#expr1, #expr2, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION, expr1, expr2) )
--- a/include/boost/core/lightweight_test_trait.hpp
+++ b/include/boost/core/lightweight_test_trait.hpp
@@ -31,7 +31,7 @@ template< class T > inline void test_trait_impl( char const * trait, void (*)( T
 {
    if( T::value == expected )
    {
-        report_errors_remind();
+        test_results();
    }
    else
    {
@@ -42,7 +42,7 @@ template< class T > inline void test_trait_impl( char const * trait, void (*)( T
            << "' (should have been " << ( expected? "true": "false" ) << ")"
            << std::endl;

-        ++test_errors();
+        ++test_results().errors();
    }
 }

--- a/include/boost/core/noncopyable.hpp
+++ b/include/boost/core/noncopyable.hpp
@@ -20,7 +20,22 @@ namespace boost {

 namespace noncopyable_  // protection from unintended ADL
 {
-  class noncopyable
+#ifndef BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
+#define BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
+
+// noncopyable derives from base_token to enable Type Traits to detect
+// whether a type derives from noncopyable without needing the definition
+// of noncopyable itself.
+//
+// The definition of base_token is macro-guarded so that Type Trais can
+// define it locally without including this header, to avoid a dependency
+// on Core.
+
+  struct base_token {};
+
+#endif // #ifndef BOOST_NONCOPYABLE_BASE_TOKEN_DEFINED
+
+  class noncopyable: base_token
  {
  protected:
 #if !defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) && !defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)
--- a/include/boost/core/pointer_traits.hpp
+++ b/include/boost/core/pointer_traits.hpp
@@ -1,5 +1,5 @@
 /*
-Copyright 2017 Glen Joseph Fernandes
+Copyright 2017-2018 Glen Joseph Fernandes
 (glenjofe@gmail.com)

 Distributed under the Boost Software License, Version 1.0.
@@ -17,20 +17,6 @@ Distributed under the Boost Software License, Version 1.0.

 namespace boost {

-template<class T>
-struct pointer_traits;
-
-namespace detail {
-
-template<class U>
-inline typename boost::pointer_traits<U>::element_type*
-ptr_traits_address(const U& v) BOOST_NOEXCEPT
-{
-    return boost::pointer_traits<U>::to_address(v);
-}
-
-} /* detail */
-
 #if !defined(BOOST_NO_CXX11_POINTER_TRAITS)
 template<class T>
 struct pointer_traits
@@ -39,10 +25,6 @@ struct pointer_traits
    struct rebind_to {
        typedef typename std::pointer_traits<T>::template rebind<U> type;
    };
-    static typename std::pointer_traits<T>::element_type*
-    to_address(const T& v) BOOST_NOEXCEPT {
-        return detail::ptr_traits_address(v.operator->());
-    }
 };

 template<class T>
@@ -52,143 +34,107 @@ struct pointer_traits<T*>
    struct rebind_to {
        typedef U* type;
    };
-    static T* to_address(T* v) BOOST_NOEXCEPT {
-        return v;
-    }
 };
 #else
 namespace detail {

-struct ptr_traits_none { char first, second; };
-
-template<class T>
-struct ptr_traits_has_element {
-private:
-    template<class U>
-    static ptr_traits_none call(...);
-    template<class U>
-    static char call(typename U::element_type* = 0);
-public:
-    static const bool value = sizeof(call<T>(0)) == 1;
+template<class>
+struct ptr_void {
+    typedef void type;
 };

 template<class T>
-struct ptr_traits_first;
+struct ptr_first;

 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 template<template<class, class...> class T, class U, class... Args>
-struct ptr_traits_first<T<U, Args...> > {
+struct ptr_first<T<U, Args...> > {
    typedef U type;
 };
 #else
 template<template<class> class T, class U>
-struct ptr_traits_first<T<U> > {
+struct ptr_first<T<U> > {
    typedef U type;
 };

 template<template<class, class> class T, class U1, class U2>
-struct ptr_traits_first<T<U1, U2> > {
+struct ptr_first<T<U1, U2> > {
    typedef U1 type;
 };

 template<template<class, class, class> class T, class U1, class U2, class U3>
-struct ptr_traits_first<T<U1, U2, U3> > {
+struct ptr_first<T<U1, U2, U3> > {
    typedef U1 type;
 };
 #endif

-template<class T, bool = ptr_traits_has_element<T>::value>
-struct ptr_traits_element {
+template<class T, class = void>
+struct ptr_element {
+    typedef typename ptr_first<T>::type type;
+};
+
+template<class T>
+struct ptr_element<T, typename ptr_void<typename T::element_type>::type> {
    typedef typename T::element_type type;
 };

-template<class T>
-struct ptr_traits_element<T, false> {
-    typedef typename ptr_traits_first<T>::type type;
-};
-
-template<class T>
-struct ptr_traits_has_difference {
-private:
-    template<class U>
-    static ptr_traits_none call(...);
-    template<class U>
-    static char call(typename U::difference_type* = 0);
-public:
-    static const bool value = sizeof(call<T>(0)) == 1;
-};
-
-template<class T, bool = ptr_traits_has_difference<T>::value>
-struct ptr_traits_difference {
-    typedef typename T::difference_type type;
-};
-
-template<class T>
-struct ptr_traits_difference<T, false> {
+template<class, class = void>
+struct ptr_difference {
    typedef std::ptrdiff_t type;
 };

-template<class T, class V>
-struct ptr_traits_has_rebind {
-private:
-    template<class U>
-    static ptr_traits_none call(...);
-    template<class U>
-    static char call(typename U::template rebind<V>* = 0);
-public:
-    static const bool value = sizeof(call<T>(0)) == 1;
+template<class T>
+struct ptr_difference<T,
+    typename ptr_void<typename T::difference_type>::type> {
+    typedef typename T::difference_type type;
 };

 template<class T, class V>
-struct ptr_traits_rebind_to;
+struct ptr_transform;

 #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 template<template<class, class...> class T, class U, class... Args, class V>
-struct ptr_traits_rebind_to<T<U, Args...>, V> {
+struct ptr_transform<T<U, Args...>, V> {
    typedef T<V, Args...> type;
 };
 #else
 template<template<class> class T, class U, class V>
-struct ptr_traits_rebind_to<T<U>, V> {
+struct ptr_transform<T<U>, V> {
    typedef T<V> type;
 };

 template<template<class, class> class T, class U1, class U2, class V>
-struct ptr_traits_rebind_to<T<U1, U2>, V> {
+struct ptr_transform<T<U1, U2>, V> {
    typedef T<V, U2> type;
 };

 template<template<class, class, class> class T,
    class U1, class U2, class U3, class V>
-struct ptr_traits_rebind_to<T<U1, U2, U3>, V> {
+struct ptr_transform<T<U1, U2, U3>, V> {
    typedef T<V, U2, U3> type;
 };
 #endif

-#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
-template<class T, class U, bool = ptr_traits_has_rebind<T, U>::value>
-struct ptr_traits_rebind {
-    typedef typename T::template rebind<U> type;
+template<class T, class U, class = void>
+struct ptr_rebind {
+    typedef typename ptr_transform<T, U>::type type;
 };

+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
 template<class T, class U>
-struct ptr_traits_rebind<T, U, false> {
-    typedef typename ptr_traits_rebind_to<T, U>::type type;
-};
-#else
-template<class T, class U>
-struct ptr_traits_rebind {
-    typedef typename ptr_traits_rebind_to<T, U>::type type;
+struct ptr_rebind<T, U,
+    typename ptr_void<typename T::template rebind<U> >::type> {
+    typedef typename T::template rebind<U> type;
 };
 #endif

 template<class T>
-struct ptr_traits_value {
+struct ptr_value {
    typedef T type;
 };

 template<>
-struct ptr_traits_value<void> {
+struct ptr_value<void> {
    typedef struct { } type;
 };

@@ -197,23 +143,20 @@ struct ptr_traits_value<void> {
 template<class T>
 struct pointer_traits {
    typedef T pointer;
-    typedef typename detail::ptr_traits_element<T>::type element_type;
-    typedef typename detail::ptr_traits_difference<T>::type difference_type;
+    typedef typename detail::ptr_element<T>::type element_type;
+    typedef typename detail::ptr_difference<T>::type difference_type;
    template<class U>
    struct rebind_to {
-        typedef typename detail::ptr_traits_rebind<T, U>::type type;
+        typedef typename detail::ptr_rebind<T, U>::type type;
    };
 #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
    template<class U>
-    using rebind = typename detail::ptr_traits_rebind<T, U>::type;
+    using rebind = typename detail::ptr_rebind<T, U>::type;
 #endif
    static pointer
-    pointer_to(typename detail::ptr_traits_value<element_type>::type& v) {
+    pointer_to(typename detail::ptr_value<element_type>::type& v) {
        return pointer::pointer_to(v);
    }
-    static element_type* to_address(const pointer& v) BOOST_NOEXCEPT {
-        return detail::ptr_traits_address(v.operator->());
-    }
 };

 template<class T>
@@ -230,29 +173,61 @@ struct pointer_traits<T*> {
    using rebind = U*;
 #endif
    static T*
-    pointer_to(typename detail::ptr_traits_value<T>::type& v) BOOST_NOEXCEPT {
-        return addressof(v);
-    }
-    static T* to_address(T* v) BOOST_NOEXCEPT {
-        return v;
+    pointer_to(typename detail::ptr_value<T>::type& v) BOOST_NOEXCEPT {
+        return boost::addressof(v);
    }
 };
 #endif

 template<class T>
-inline typename pointer_traits<T>::element_type*
-to_address(const T& v) BOOST_NOEXCEPT
-{
-    return pointer_traits<T>::to_address(v);
-}
-
-template<class T>
-inline T*
+BOOST_CONSTEXPR inline T*
 to_address(T* v) BOOST_NOEXCEPT
 {
    return v;
 }

+#if !defined(BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION)
+namespace detail {
+
+template<class T>
+inline T*
+ptr_address(T* v, int) BOOST_NOEXCEPT
+{
+    return v;
+}
+
+template<class T>
+inline auto
+ptr_address(const T& v, int) BOOST_NOEXCEPT
+-> decltype(boost::pointer_traits<T>::to_address(v))
+{
+    return boost::pointer_traits<T>::to_address(v);
+}
+
+template<class T>
+inline auto
+ptr_address(const T& v, long) BOOST_NOEXCEPT
+{
+    return boost::detail::ptr_address(v.operator->(), 0);
+}
+
+} /* detail */
+
+template<class T>
+inline auto
+to_address(const T& v) BOOST_NOEXCEPT
+{
+    return boost::detail::ptr_address(v, 0);
+}
+#else
+template<class T>
+inline typename pointer_traits<T>::element_type*
+to_address(const T& v) BOOST_NOEXCEPT
+{
+    return boost::to_address(v.operator->());
+}
+#endif
+
 } /* boost */

 #endif
--- a/include/boost/utility/empty_deleter.hpp
+++ b/include/boost/utility/empty_deleter.hpp
@@ -1,43 +0,0 @@
-/*
- *          Copyright Andrey Semashev 2007 - 2013.
- * 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)
- */
-
-/*!
- * \file   empty_deleter.hpp
- * \author Andrey Semashev
- * \date   22.04.2007
- *
- * This header contains an \c empty_deleter implementation. This is an empty
- * function object that receives a pointer and does nothing with it.
- * Such empty deletion strategy may be convenient, for example, when
- * constructing <tt>shared_ptr</tt>s that point to some object that should not be
- * deleted (i.e. a variable on the stack or some global singleton, like <tt>std::cout</tt>).
- */
-
-#ifndef BOOST_UTILITY_EMPTY_DELETER_HPP
-#define BOOST_UTILITY_EMPTY_DELETER_HPP
-
-#include <boost/config.hpp>
-#include <boost/core/null_deleter.hpp>
-
-#ifdef BOOST_HAS_PRAGMA_ONCE
-#pragma once
-#endif
-
-#if defined(__GNUC__)
-#pragma message "This header is deprecated, use boost/core/null_deleter.hpp instead."
-#elif defined(_MSC_VER)
-#pragma message("This header is deprecated, use boost/core/null_deleter.hpp instead.")
-#endif
-
-namespace boost {
-
-//! A deprecated name for \c null_deleter
-typedef null_deleter empty_deleter;
-
-} // namespace boost
-
-#endif // BOOST_UTILITY_EMPTY_DELETER_HPP
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -1,6 +1,6 @@
 #  Boost.Core Library test Jamfile
 #
-#  Copyright (c) 2014 Peter Dimov
+#  Copyright (c) 2014, 2017 Peter Dimov
 #
 #  Distributed under the Boost Software License, Version 1.0.
 #  See accompanying file LICENSE_1_0.txt or copy at
@@ -9,6 +9,10 @@
 import modules ;
 import testing ;

+# quick test (for CI)
+run quick.cpp ;
+
+# full test suite
 run addressof_test.cpp ;
 run addressof_test2.cpp ;
 run addressof_np_test.cpp ;
@@ -64,15 +68,14 @@ 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 ;

 run-fail lightweight_test_fail.cpp ;
 run-fail lightweight_test_fail2.cpp ;
@@ -86,6 +89,7 @@ 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_lt_fail.cpp ;
 run-fail lightweight_test_le_fail.cpp ;
 run-fail lightweight_test_gt_fail.cpp ;
@@ -110,7 +114,6 @@ compile-fail scoped_enum_compile_fail_conv_to_int.cpp ;

 run underlying_type.cpp ;

-run pointer_traits_to_address_test.cpp ;
 run pointer_traits_pointer_test.cpp ;
 run pointer_traits_element_type_test.cpp ;
 run pointer_traits_difference_type_test.cpp ;
@@ -118,5 +121,11 @@ run pointer_traits_rebind_test.cpp ;
 run pointer_traits_pointer_to_test.cpp ;
 run to_address_test.cpp ;

+run exchange_test.cpp ;
+run exchange_move_test.cpp ;
+
+run empty_value_test.cpp ;
+run empty_value_size_test.cpp ;
+
 use-project /boost/core/swap : ./swap ;
 build-project ./swap ;
--- a/test/empty_value_size_test.cpp
+++ b/test/empty_value_size_test.cpp
@@ -0,0 +1,60 @@
+/*
+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/config.hpp>
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+#include <boost/core/empty_value.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+struct T1 { };
+
+struct S1
+    : boost::empty_value<T1, 0, true> { };
+
+struct T2 {
+    int value;
+};
+
+struct S2
+    : boost::empty_value<T1, 0, true>
+    , boost::empty_value<T2, 1, true> { };
+
+struct S3
+    : boost::empty_value<T1, 0, false>
+    , boost::empty_value<T2, 1, true> { };
+
+struct T3 { };
+
+struct S4
+    : boost::empty_value<T1, 0, true>
+    , boost::empty_value<T3, 1, true> { };
+
+struct S5
+    : boost::empty_value<T1, 0, false>
+    , boost::empty_value<T3, 1, false> { };
+
+struct S6
+    : boost::empty_value<T1, 0, true>
+    , boost::empty_value<T2, 1, true>
+    , boost::empty_value<T3, 2, true> { };
+
+int main()
+{
+    BOOST_TEST(sizeof(S1) == sizeof(T1));
+    BOOST_TEST(sizeof(S2) == sizeof(T2));
+    BOOST_TEST(sizeof(S3) > sizeof(T2));
+    BOOST_TEST(sizeof(S4) == sizeof(T1));
+    BOOST_TEST(sizeof(S5) > sizeof(T1));
+    BOOST_TEST(sizeof(S6) == sizeof(T2));
+    return boost::report_errors();
+}
+#else
+int main()
+{
+    return 0;
+}
+#endif
--- a/test/empty_value_test.cpp
+++ b/test/empty_value_test.cpp
@@ -0,0 +1,76 @@
+/*
+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>
+
+struct empty {
+    operator bool() const {
+        return false;
+    }
+    operator bool() {
+        return true;
+    }
+};
+
+class type {
+public:
+    type()
+        : value_(false) { }
+    explicit type(bool value)
+        : value_(value) { }
+    operator bool() const {
+        return value_;
+    }
+private:
+    bool value_;
+};
+
+void test_bool()
+{
+    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());
+    v2 = v1;
+    BOOST_TEST(v2.get());
+    v2.get() = false;
+    BOOST_TEST(!v2.get());
+}
+
+void test_empty()
+{
+    empty e;
+    const boost::empty_value<empty> v1(boost::empty_init_t(), e);
+    BOOST_TEST(!v1.get());
+    boost::empty_value<empty> v2;
+    BOOST_TEST(v2.get());
+    v2 = v1;
+    BOOST_TEST(v2.get());
+    v2.get() = empty();
+    BOOST_TEST(v2.get());
+}
+
+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());
+    v2 = v1;
+    BOOST_TEST(v2.get());
+    v2.get() = type();
+    BOOST_TEST(!v2.get());
+}
+
+int main()
+{
+    test_bool();
+    test_empty();
+    test_type();
+    return boost::report_errors();
+}
--- a/test/exchange_move_test.cpp
+++ b/test/exchange_move_test.cpp
@@ -0,0 +1,100 @@
+/*
+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/config.hpp>
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+#include <boost/core/exchange.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+class C1 {
+public:
+    explicit C1(int i)
+        : i_(i) { }
+    C1(C1&& c)
+        : i_(c.i_) { }
+    C1& operator=(C1&& c) {
+        i_ = c.i_;
+        return *this;
+    }
+    int i() const {
+        return i_;
+    }
+private:
+    C1(const C1&);
+    C1& operator=(const C1&);
+    int i_;
+};
+
+void test1()
+{
+    C1 x(1);
+    BOOST_TEST(boost::exchange(x, C1(2)).i() == 1);
+    BOOST_TEST(x.i() == 2);
+}
+
+class C2 {
+public:
+    explicit C2(int i)
+        : i_(i) { }
+    operator C1() const {
+        return C1(i_);
+    }
+    int i() const {
+        return i_;
+    }
+private:
+    C2(const C2&);
+    C2& operator=(const C2&);
+    int i_;
+};
+
+void test2()
+{
+    C1 x(1);
+    BOOST_TEST(boost::exchange(x, C2(2)).i() == 1);
+    BOOST_TEST(x.i() == 2);
+}
+
+class C3 {
+public:
+    explicit C3(int i)
+        : i_(i) { }
+    C3(C3&& c)
+        : i_(c.i_) { }
+    C3& operator=(C1&& c) {
+        i_ = c.i();
+        return *this;
+    }
+    int i() const {
+        return i_;
+    }
+private:
+    C3(const C3&);
+    C3& operator=(const C3&);
+    int i_;
+};
+
+void test3()
+{
+    C3 x(1);
+    BOOST_TEST(boost::exchange(x, C1(2)).i() == 1);
+    BOOST_TEST(x.i() == 2);
+}
+
+int main()
+{
+    test1();
+    test2();
+    test3();
+    return boost::report_errors();
+}
+#else
+int main()
+{
+    return 0;
+}
+#endif
--- a/test/exchange_test.cpp
+++ b/test/exchange_test.cpp
@@ -0,0 +1,89 @@
+/*
+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/exchange.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+void test1()
+{
+    int i = 1;
+    BOOST_TEST(boost::exchange(i, 2) == 1);
+    BOOST_TEST(i == 2);
+}
+
+class C1 {
+public:
+    explicit C1(int i)
+        : i_(i) { }
+    int i() const {
+        return i_;
+    }
+private:
+    int i_;
+};
+
+void test2()
+{
+    C1 x(1);
+    BOOST_TEST(boost::exchange(x, C1(2)).i() == 1);
+    BOOST_TEST(x.i() == 2);
+}
+
+class C2 {
+public:
+    explicit C2(int i)
+        : i_(i) { }
+    operator C1() const {
+        return C1(i_);
+    }
+    int i() const {
+        return i_;
+    }
+private:
+    int i_;
+};
+
+void test3()
+{
+    C1 x(1);
+    BOOST_TEST(boost::exchange(x, C2(2)).i() == 1);
+    BOOST_TEST(x.i() == 2);
+}
+
+class C3 {
+public:
+    explicit C3(int i)
+        : i_(i) { }
+    C3(const C3& c)
+        : i_(c.i_) { }
+    C3& operator=(const C1& c) {
+        i_ = c.i();
+        return *this;
+    }
+    int i() const {
+        return i_;
+    }
+private:
+    C3& operator=(const C3&);
+    int i_;
+};
+
+void test4()
+{
+    C3 x(1);
+    BOOST_TEST(boost::exchange(x, C1(2)).i() == 1);
+    BOOST_TEST(x.i() == 2);
+}
+
+int main()
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    return boost::report_errors();
+}
--- a/test/lightweight_test_all_eq_test.cpp
+++ b/test/lightweight_test_all_eq_test.cpp
@@ -120,7 +120,5 @@ int main()
        ++test_cases;
    }

-    boost::report_errors();
-
-    return boost::detail::test_errors() != test_cases;
+    return !boost::report_errors();
 }
--- a/test/lightweight_test_all_with_fail.cpp
+++ b/test/lightweight_test_all_with_fail.cpp
@@ -101,7 +101,5 @@ int main()
    test_cases += fail_vector();
    test_cases += fail_tolerance_predicate();

-    boost::report_errors();
-
-    return boost::detail::test_errors() != test_cases;
+    return !boost::report_errors();
 }
--- a/test/lightweight_test_eq_nullptr.cpp
+++ b/test/lightweight_test_eq_nullptr.cpp
@@ -22,6 +22,9 @@ int main()
    BOOST_TEST_EQ( p1, nullptr );
    BOOST_TEST_NE( p2, nullptr );

+    BOOST_TEST_EQ( nullptr, p1 );
+    BOOST_TEST_NE( nullptr, p2 );
+
 #endif

    return boost::report_errors();
--- a/test/lightweight_test_fail11.cpp
+++ b/test/lightweight_test_fail11.cpp
@@ -0,0 +1,14 @@
+/*
+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/lightweight_test.hpp>
+
+int main()
+{
+    BOOST_TEST(true);
+    return 0;
+}
--- a/test/lightweight_test_test3.cpp
+++ b/test/lightweight_test_test3.cpp
@@ -0,0 +1,147 @@
+//
+// Test for lightweight_test.hpp
+//
+// Copyright (c) 2014, 2018 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/core/lightweight_test.hpp>
+#include <boost/core/noncopyable.hpp>
+#include <ostream>
+
+// EQ
+
+struct eq1: private boost::noncopyable {};
+struct eq2: private boost::noncopyable {};
+
+std::ostream& operator<<( std::ostream& os, eq1 const& )
+{
+    return os << "eq1()";
+}
+
+std::ostream& operator<<( std::ostream& os, eq2 const& )
+{
+    return os << "eq2()";
+}
+
+bool operator==( eq1 const&, eq2 const& )
+{
+    return true;
+}
+
+// NE
+
+struct ne1: private boost::noncopyable {};
+struct ne2: private boost::noncopyable {};
+
+std::ostream& operator<<( std::ostream& os, ne1 const& )
+{
+    return os << "ne1()";
+}
+
+std::ostream& operator<<( std::ostream& os, ne2 const& )
+{
+    return os << "ne2()";
+}
+
+bool operator!=( ne1 const&, ne2 const& )
+{
+    return true;
+}
+
+// LT
+
+struct lt1: private boost::noncopyable {};
+struct lt2: private boost::noncopyable {};
+
+std::ostream& operator<<( std::ostream& os, lt1 const& )
+{
+    return os << "lt1()";
+}
+
+std::ostream& operator<<( std::ostream& os, lt2 const& )
+{
+    return os << "lt2()";
+}
+
+bool operator<( lt1 const&, lt2 const& )
+{
+    return true;
+}
+
+// LE
+
+struct le1: private boost::noncopyable {};
+struct le2: private boost::noncopyable {};
+
+std::ostream& operator<<( std::ostream& os, le1 const& )
+{
+    return os << "le1()";
+}
+
+std::ostream& operator<<( std::ostream& os, le2 const& )
+{
+    return os << "le2()";
+}
+
+bool operator<=( le1 const&, le2 const& )
+{
+    return true;
+}
+
+// GT
+
+struct gt1: private boost::noncopyable {};
+struct gt2: private boost::noncopyable {};
+
+std::ostream& operator<<( std::ostream& os, gt1 const& )
+{
+    return os << "gt1()";
+}
+
+std::ostream& operator<<( std::ostream& os, gt2 const& )
+{
+    return os << "gt2()";
+}
+
+bool operator>( gt1 const&, gt2 const& )
+{
+    return true;
+}
+
+// GE
+
+struct ge1: private boost::noncopyable {};
+struct ge2: private boost::noncopyable {};
+
+std::ostream& operator<<( std::ostream& os, ge1 const& )
+{
+    return os << "ge1()";
+}
+
+std::ostream& operator<<( std::ostream& os, ge2 const& )
+{
+    return os << "ge2()";
+}
+
+bool operator>=( ge1 const&, ge2 const& )
+{
+    return true;
+}
+
+//
+
+int main()
+{
+    BOOST_TEST_EQ( eq1(), eq2() );
+    BOOST_TEST_NE( ne1(), ne2() );
+    BOOST_TEST_LT( lt1(), lt2() );
+    BOOST_TEST_LE( le1(), le2() );
+    BOOST_TEST_GT( gt1(), gt2() );
+    BOOST_TEST_GE( ge1(), ge2() );
+
+    return boost::report_errors();
+}
--- a/test/pointer_traits_to_address_test.cpp
+++ b/test/pointer_traits_to_address_test.cpp
@@ -1,131 +0,0 @@
-/*
-Copyright 2017 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/pointer_traits.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template<class T>
-class pointer {
-public:
-    typedef typename boost::pointer_traits<T>::element_type element_type;
-    pointer(T value)
-        : value_(value) { }
-    T operator->() const BOOST_NOEXCEPT {
-        return value_;
-    }
-private:
-    T value_;
-};
-
-template<class T>
-class special {
-public:
-    special(T* value)
-        : value_(value) { }
-    T* get() const BOOST_NOEXCEPT {
-        return value_;
-    }
-private:
-    T* value_;
-};
-
-namespace boost {
-
-template<class T>
-struct pointer_traits<special<T> > {
-    typedef special<T> pointer;
-    typedef T element_type;
-    typedef std::ptrdiff_t difference_type;
-    template<class U>
-    struct rebind_to {
-        typedef special<U> type;
-    };
-#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
-    template<class U>
-    using rebind = typename rebind_to<U>::type;
-#endif
-    template<class U>
-    static pointer pointer_to(U& v) BOOST_NOEXCEPT {
-        return pointer(&v);
-    }
-    static element_type* to_address(const pointer& v) BOOST_NOEXCEPT {
-        return v.get();
-    }
-};
-
-} /* boost */
-
-int main()
-{
-    int i = 0;
-    {
-        typedef int* type;
-        type p = &i;
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef pointer<int*> type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef pointer<pointer<int*> > type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef void* type;
-        type p = &i;
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef pointer<void*> type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef const int* type;
-        type p = &i;
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef pointer<const int*> type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef special<int> type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef special<void> type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef special<const int> type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef pointer<special<int> > type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef pointer<special<void> > type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    {
-        typedef pointer<special<const int> > type;
-        type p(&i);
-        BOOST_TEST(boost::pointer_traits<type>::to_address(p) == &i);
-    }
-    return boost::report_errors();
-}
--- a/test/quick.cpp
+++ b/test/quick.cpp
@@ -0,0 +1,34 @@
+//
+// quick.cpp - a quick (CI) test for Boost.Core
+//
+// Copyright 2017 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/addressof.hpp>
+#include <boost/core/checked_delete.hpp>
+#include <boost/core/demangle.hpp>
+#include <boost/detail/iterator.hpp>
+#include <boost/core/enable_if.hpp>
+#include <boost/core/explicit_operator_bool.hpp>
+#include <boost/get_pointer.hpp>
+#include <boost/core/ignore_unused.hpp>
+#include <boost/core/is_same.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/core/null_deleter.hpp>
+#include <boost/core/pointer_traits.hpp>
+#include <boost/ref.hpp>
+#include <boost/core/scoped_enum.hpp>
+#include <boost/detail/sp_typeinfo.hpp>
+#include <boost/core/typeinfo.hpp>
+#include <boost/core/underlying_type.hpp>
+#include <boost/visit_each.hpp>
+
+int main()
+{
+}
--- a/test/to_address_test.cpp
+++ b/test/to_address_test.cpp
@@ -1,5 +1,5 @@
 /*
-Copyright 2017 Glen Joseph Fernandes
+Copyright 2017-2018 Glen Joseph Fernandes
 (glenjofe@gmail.com)

 Distributed under the Boost Software License, Version 1.0.
@@ -9,123 +9,150 @@ Distributed under the Boost Software License, Version 1.0.
 #include <boost/core/lightweight_test.hpp>

 template<class T>
-class pointer {
+class P1 {
 public:
-    typedef typename boost::pointer_traits<T>::element_type element_type;
-    pointer(T value)
-        : value_(value) { }
-    T operator->() const BOOST_NOEXCEPT {
-        return value_;
+    explicit P1(T* p)
+        : p_(p) { }
+    T* operator->() const BOOST_NOEXCEPT {
+        return p_;
    }
 private:
-    T value_;
+    T* p_;
 };

 template<class T>
-class special {
+class P2 {
 public:
-    special(T* value)
-        : value_(value) { }
-    T* get() const BOOST_NOEXCEPT {
-        return value_;
+    explicit P2(T* p)
+        : p_(p) { }
+    P1<T> operator->() const BOOST_NOEXCEPT {
+        return p_;
    }
 private:
-    T* value_;
+    P1<T> p_;
+};
+
+#if !defined(BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION)
+template<class T>
+class P3 {
+public:
+    explicit P3(T* p)
+        : p_(p) { }
+    T* get() const BOOST_NOEXCEPT {
+        return p_;
+    }
+private:
+    T* p_;
 };

 namespace boost {
-
 template<class T>
-struct pointer_traits<special<T> > {
-    typedef special<T> pointer;
-    typedef T element_type;
-    typedef std::ptrdiff_t difference_type;
-    template<class U>
-    struct rebind_to {
-        typedef special<U> type;
-    };
-#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
-    template<class U>
-    using rebind = typename rebind_to<U>::type;
-#endif
-    template<class U>
-    static pointer pointer_to(U& v) BOOST_NOEXCEPT {
-        return pointer(&v);
-    }
-    static element_type* to_address(const pointer& v) BOOST_NOEXCEPT {
-        return v.get();
+struct pointer_traits<P3<T> > {
+    static T* to_address(const P3<T>& p) BOOST_NOEXCEPT {
+        return p.get();
    }
 };
-
 } /* boost */

+template<class T>
+class P4 {
+public:
+    explicit P4(T* p)
+        : p_(p) { }
+    T* operator->() const BOOST_NOEXCEPT {
+        return 0;
+    }
+    T* get() const BOOST_NOEXCEPT {
+        return p_;
+    }
+private:
+    int* p_;
+};
+
+namespace boost {
+template<class T>
+struct pointer_traits<P4<T> > {
+    static T* to_address(const P4<T>& p) BOOST_NOEXCEPT {
+        return p.get();
+    }
+};
+} /* boost */
+
+#if !defined(BOOST_NO_CXX11_POINTER_TRAITS)
+template<class T>
+class P5 {
+public:
+    explicit P5(T* p)
+        : p_(p) { }
+    T* get() const BOOST_NOEXCEPT {
+        return p_;
+    }
+private:
+    T* p_;
+};
+
+namespace std {
+template<class T>
+struct pointer_traits<P5<T> > {
+    static T* to_address(const P5<T>& p) BOOST_NOEXCEPT {
+        return p.get();
+    }
+};
+} /* std */
+
+template<class T>
+class P6 {
+public:
+    explicit P6(T* p)
+        : p_(p) { }
+    T* get() const BOOST_NOEXCEPT {
+        return p_;
+    }
+private:
+    T* p_;
+};
+
+namespace boost {
+template<class T>
+struct pointer_traits<P6<T> > {
+    static T* to_address(const P6<T>& p) BOOST_NOEXCEPT {
+        return p.get();
+    }
+};
+} /* boost */
+
+namespace std {
+template<class T>
+struct pointer_traits<P6<T> > {
+    static T* to_address(const P6<T>& p) BOOST_NOEXCEPT {
+        return 0;
+    }
+};
+} /* std */
+#endif
+#endif
+
 int main()
 {
    int i = 0;
-    {
-        typedef int* type;
-        type p = &i;
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef pointer<int*> type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef pointer<pointer<int*> > type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef void* type;
-        type p = &i;
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef pointer<void*> type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef const int* type;
-        type p = &i;
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef pointer<const int*> type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef special<int> type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef special<void> type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef special<const int> type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef pointer<special<int> > type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef pointer<special<void> > type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
-    {
-        typedef pointer<special<const int> > type;
-        type p(&i);
-        BOOST_TEST(boost::to_address(p) == &i);
-    }
+    BOOST_TEST(boost::to_address(&i) == &i);
+    int* p = &i;
+    BOOST_TEST(boost::to_address(p) == &i);
+    P1<int> p1(&i);
+    BOOST_TEST(boost::to_address(p1) == &i);
+    P2<int> p2(&i);
+    BOOST_TEST(boost::to_address(p2) == &i);
+#if !defined(BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION)
+    P3<int> p3(&i);
+    BOOST_TEST(boost::to_address(p3) == &i);
+    P4<int> p4(&i);
+    BOOST_TEST(boost::to_address(p4) == &i);
+#if !defined(BOOST_NO_CXX11_POINTER_TRAITS)
+    P5<int> p5(&i);
+    BOOST_TEST(boost::to_address(p5) == &i);
+    P6<int> p6(&i);
+    BOOST_TEST(boost::to_address(p6) == &i);
+#endif
+#endif
    return boost::report_errors();
 }
Author	SHA1	Message	Date
Peter Dimov	cf66842419	MinGW doesn't have _exit either	2018-09-05 08:39:35 +03:00
Peter Dimov	861eb5cf4c	Merge branch 'develop' into feature/Exit	2018-09-05 07:24:23 +03:00
Peter Dimov	205b319b57	Use _exit instead of _Exit on MinGW	2018-09-05 07:17:58 +03:00
Glen Fernandes	6f1d88d153	Provide detail::test_errors() as others are using it	2018-09-05 00:16:17 -04:00
Peter Dimov	7f7c4c5b83	Call _set_abort_behavior on all compilers impersonating MSVC	2018-09-05 07:01:29 +03:00
Peter Dimov	dfd5a0b8db	Remove dead #else branch	2018-09-05 06:56:59 +03:00
Peter Dimov	d8c0768788	Use _Exit(3) instead of abort() to avoid core dump	2018-09-05 06:26:40 +03:00
Peter Dimov	d0a9206d6a	Call _set_abort_behavior on clang-win too	2018-09-05 06:04:53 +03:00
Glen Fernandes	76c3538315	Suppress MSVC error dialogs and add test for report_errors()	2018-09-04 21:16:36 -04:00
Glen Fernandes	f2638b6d64	Merge pull request #40 from glenfe/develop Abort instead of assert if report_errors() not called	2018-09-04 20:25:11 -04:00
Glen Fernandes	30c006ac82	Call test_results() in BOOST_TEST()	2018-09-04 20:22:56 -04:00
Glen Fernandes	c71eb0e479	Abort instead of assert if report_errors() not called	2018-09-04 17:00:50 -04:00
Glen Fernandes	3f7d36445d	Reduce statics in Lightweight_test	2018-09-04 16:53:25 -04:00
Peter Dimov	a08dda22b2	Remove clang-3.7 from Travis, as it's not in trusty-updates and the -precise sources no longer work	2018-08-31 01:52:04 +03:00
Glen Fernandes	2d99acd7ec	Name the empty_value template parameters	2018-08-27 22:48:06 -04:00
Glen Fernandes	65b98db868	Update formatting in documentation	2018-08-27 00:57:45 -04:00
Glen Fernandes	edcd9e2cf5	Add documentation for empty_value	2018-08-26 20:16:26 -04:00
Glen Fernandes	2eaba7d6d1	Make empty_value<T> trivial if T is trivial	2018-08-26 02:10:02 -04:00
Peter Dimov	a05906fd44	Add comment describing noncopyable_::base_token	2018-08-25 15:15:53 +03:00
Peter Dimov	f3782a946f	Derive noncopyable from a base_token class to allow it to be detected by Type Traits without an #include	2018-08-25 01:47:47 +03:00
Glen Fernandes	f504872d89	Implement empty_value	2018-08-24 16:24:34 -04:00
Glen Fernandes	e1f070b7b4	Remove anti_op and change the error output The new output is no less useful, and not potentially misleading (for example in the case of BOOST_TEST_LT(1, nan) failing, it was not right to say that 1 >= nan).	2018-08-09 08:04:09 -04:00
Hans Dembinski	740f2142c5	new test backend based on predicates (#39 ) * Work in progress, some tests fail * adding tests * missing header * moved close_to to detail, added constness, replaced predicates from <functional> with custom ones, new code does not rely on partial template specialization * renamed predicates and removed close_to predicate * removing now superfluous headers * unpatching the fix to put in a separate PR * move predicate to first argument * call op and anti_op as normal methods	2018-08-08 15:37:51 +03:00
Peter Dimov	5c10ee4517	explicit_operator_bool: fix g++ 4.6 workaround	2018-08-08 00:27:59 +03:00
Peter Dimov	b7ad896707	explicit_operator_bool: under g++ 4.6 the operator can't be constexpr	2018-08-07 22:59:25 +03:00
Peter Dimov	70413b0568	Add more Travis configurations	2018-08-07 18:50:14 +03:00
Peter Dimov	b8a9b2c234	Add lightweight_test_test3	2018-08-07 17:58:23 +03:00
Peter Dimov	e11fa9ac03	In lightweight_test_eq_nullptr, test with nullptr as first argument as well	2018-08-07 17:43:38 +03:00
Peter Dimov	e1d50a1de2	Fix typo in lightweight_test.hpp	2018-08-07 17:40:47 +03:00
Glen Fernandes	e128f4e1b8	Add documentation for exchange	2018-07-20 08:25:48 -04:00
Glen Fernandes	cc119253b4	Simplify test case; type does not need to be noncopyable	2018-07-12 21:48:05 -04:00
Glen Fernandes	19ec659a91	Simplify exchange implementation for pre-C++11	2018-07-09 08:48:50 -04:00
Glen Fernandes	75ae238d0c	Use #else instead of #elif BOOST_WORKAROUND	2018-07-08 12:04:09 -04:00
Glen Fernandes	630ab2aae4	Workaround MSVC10 and MSVC11 for exchange	2018-07-08 11:18:17 -04:00
Glen Fernandes	2cd4753a02	Implement boost::exchange	2018-07-08 09:25:07 -04:00
Glen Fernandes	9445d08ea7	Rename detail identifiers in addressof	2018-01-27 12:44:50 -05:00
Glen Fernandes	dbb3305050	Only checking BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION is sufficient	2018-01-27 09:42:02 -05:00
Glen Fernandes	23f10ab4bf	Update pointer_traits and to_address to reflect the design adopted for C++20	2018-01-27 05:15:05 -05:00
Glen Fernandes	e5281335e0	Simplify pointer_traits detail traits	2018-01-27 01:37:42 -05:00
jzmaddock	b5dcd204e5	address_of.hpp: VC12 namespace ambiguity I'm seeing compiler errors with vc12, when testing serialization of Boost.Multiprecision types - there is ambiguity between boost::detail and boost::multiprecision::detail. I assume the error occurs for serialization of any type that has it's own detail namespace. The fix is trivially to qualify the use of "detail::".	2017-12-25 20:34:11 -05:00
Peter Dimov	081ca76d6c	Update Travis and Appveyor	2017-11-06 15:10:55 +02:00
Peter Dimov	2a3387451f	Avoid 'unused variable v' warning on msvc-10.0, msvc-11.0	2017-11-01 15:38:54 +02:00
Peter Dimov	69bd3e73bf	Fix .travis.yml to support branches	2017-10-27 15:33:19 +03:00
Peter Dimov	0296f44b2b	Update .travis.yml	2017-10-25 17:34:21 +03:00
Andrey Semashev	2738af9b52	Removed the deprecated empty_deleter header.	2017-09-18 02:02:38 +03:00
Peter Dimov	6a1c3a82a1	Add quick test target	2017-09-04 15:32:13 +03:00