Attempt to work around C++20 operator rewriting causinginfinite recursion.

Fixes https://github.com/boostorg/utility/issues/65.
Use address-model=32 for msvc-9.0, 10.0, 11.0
2025-10-16 18:35:20 +02:00 · 2020-11-30 01:52:44 +03:00 · 2020-10-12 00:01:10 +03:00 · 2020-10-11 11:48:14 -04:00 · 2020-10-11 17:35:14 +02:00 · 2020-05-27 12:51:45 +03:00
36 changed files with 1539 additions and 337 deletions
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 # Copyright 2016, 2017 Peter Dimov
+# Copyright 2019 Andrey Semashev
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)

@@ -24,12 +25,32 @@ matrix:
    - env: BOGUS_JOB=true

  include:
+# gcc, Linux
    - os: linux
-      compiler: g++
-      env: TOOLSET=gcc COMPILER=g++ CXXSTD=03,11
+      dist: trusty
+      compiler: gcc-4.4
+      env: TOOLSET=gcc COMPILER=g++-4.4 CXXSTD=98,0x
+      addons:
+        apt:
+          packages:
+            - g++-4.4
+          sources:
+            - ubuntu-toolchain-r-test

    - os: linux
-      compiler: g++-4.7
+      dist: trusty
+      compiler: gcc-4.6
+      env: TOOLSET=gcc COMPILER=g++-4.6 CXXSTD=03,0x
+      addons:
+        apt:
+          packages:
+            - g++-4.6
+          sources:
+            - ubuntu-toolchain-r-test
+
+    - os: linux
+      dist: trusty
+      compiler: gcc-4.7
      env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=03,11
      addons:
        apt:
@@ -39,7 +60,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      compiler: g++-4.8
+      dist: xenial
+      compiler: gcc-4.8
      env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=03,11
      addons:
        apt:
@@ -47,8 +69,10 @@ matrix:
            - g++-4.8
          sources:
            - ubuntu-toolchain-r-test
+
    - os: linux
-      compiler: g++-4.9
+      dist: xenial
+      compiler: gcc-4.9
      env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=03,11
      addons:
        apt:
@@ -58,7 +82,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      compiler: g++-5
+      dist: xenial
+      compiler: gcc-5
      env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=03,11,14,1z
      addons:
        apt:
@@ -68,7 +93,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      compiler: g++-6
+      dist: xenial
+      compiler: gcc-6
      env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=03,11,14,1z
      addons:
        apt:
@@ -78,8 +104,8 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      dist: trusty
-      compiler: g++-7
+      dist: xenial
+      compiler: gcc-7
      env: TOOLSET=gcc COMPILER=g++-7 CXXSTD=03,11,14,17
      addons:
        apt:
@@ -89,22 +115,56 @@ matrix:
            - ubuntu-toolchain-r-test

    - os: linux
-      compiler: clang++
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11
+      dist: xenial
+      compiler: gcc-8
+      env: TOOLSET=gcc COMPILER=g++-8 CXXSTD=03,11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - g++-8
+          sources:
+            - ubuntu-toolchain-r-test

    - os: linux
-      compiler: clang++-3.5
+      dist: bionic
+      compiler: gcc-9
+      env: TOOLSET=gcc COMPILER=g++-9 CXXSTD=03,11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - g++-9
+          sources:
+            - sourceline: "ppa:ubuntu-toolchain-r/test"
+
+    - os: linux
+      dist: bionic
+      compiler: gcc-10
+      env: TOOLSET=gcc COMPILER=g++-10 CXXSTD=03,11,14,17,20
+      addons:
+        apt:
+          packages:
+            - g++-10
+          sources:
+            - sourceline: "ppa:ubuntu-toolchain-r/test"
+
+# clang, Linux
+    - os: linux
+      dist: trusty
+      compiler: clang-3.5
      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
-            - llvm-toolchain-precise-3.5
+            - sourceline: "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.5 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"

    - os: linux
-      compiler: clang++-3.6
+      dist: trusty
+      compiler: clang-3.6
      env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=03,11,14,1z
      addons:
        apt:
@@ -113,10 +173,12 @@ matrix:
            - libstdc++-5-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.6
+            - sourceline: "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.6 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"

    - os: linux
-      compiler: clang++-3.7
+      dist: trusty
+      compiler: clang-3.7
      env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=03,11,14,1z
      addons:
        apt:
@@ -125,73 +187,186 @@ matrix:
            - libstdc++-5-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.7
+            - sourceline: "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-3.7 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"

    - os: linux
-      compiler: clang++-3.8
+      dist: xenial
+      compiler: clang-3.8
      env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
            - clang-3.8
-            - libstdc++-5-dev
+            - libstdc++-6-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.8
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-3.8 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"

    - os: linux
-      compiler: clang++-3.9
+      dist: xenial
+      compiler: clang-3.9
      env: TOOLSET=clang COMPILER=clang++-3.9 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
            - clang-3.9
-            - libstdc++-5-dev
+            - libstdc++-6-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.9
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-3.9 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"

    - os: linux
-      compiler: clang++-4.0
+      dist: xenial
+      compiler: clang-4
      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
            - clang-4.0
-            - libstdc++-5-dev
+            - libstdc++-6-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-4.0
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-4.0 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"

    - os: linux
-      compiler: clang++-5.0
+      dist: xenial
+      compiler: clang-5
      env: TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=03,11,14,1z
      addons:
        apt:
          packages:
            - clang-5.0
-            - libstdc++-5-dev
+            - libstdc++-7-dev
          sources:
            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-5.0
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-5.0 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+
+    - os: linux
+      dist: xenial
+      compiler: clang-6
+      env: TOOLSET=clang COMPILER=clang++-6.0 CXXSTD=03,11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-6.0
+            - libstdc++-8-dev
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-6.0 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+
+    - os: linux
+      dist: xenial
+      compiler: clang-7
+      env: TOOLSET=clang COMPILER=clang++-7 CXXSTD=03,11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-7
+            - libstdc++-8-dev
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+
+    - os: linux
+      dist: xenial
+      compiler: clang-8
+      env: TOOLSET=clang COMPILER=clang++-8 CXXSTD=03,11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-8
+            - libstdc++-8-dev
+          sources:
+            - ubuntu-toolchain-r-test
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+
+    - os: linux
+      dist: xenial
+      compiler: clang-9
+      env: TOOLSET=clang COMPILER=clang++-9 CXXSTD=03,11,14,17,2a
+      addons:
+        apt:
+          packages:
+            - clang-9
+            - libstdc++-9-dev
+          sources:
+            - sourceline: "ppa:ubuntu-toolchain-r/test"
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+
+    - os: linux
+      dist: xenial
+      compiler: clang-10
+      env: TOOLSET=clang COMPILER=clang++-10 CXXSTD=03,11,14,17,20
+      addons:
+        apt:
+          packages:
+            - clang-10
+            - libstdc++-9-dev
+          sources:
+            - sourceline: "ppa:ubuntu-toolchain-r/test"
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+
+    - os: linux
+      dist: xenial
+      compiler: clang-libc++
+      env: TOOLSET=clang COMPILER=clang++-10 CXXSTD=03,11,14,17,20 CXXFLAGS="-stdlib=libc++" LINKFLAGS="-stdlib=libc++"
+      addons:
+        apt:
+          packages:
+            - clang-10
+            - libc++-10-dev
+            - libc++abi-10-dev
+          sources:
+            - sourceline: "ppa:ubuntu-toolchain-r/test"
+            - sourceline: "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main"
+              key_url: "https://apt.llvm.org/llvm-snapshot.gpg.key"
+
+# clang, OS X
+# OS X builds are slow on Travis CI
+#    - os: osx
+#      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+#      osx_image: xcode9.4
+#
+#    - os: osx
+#      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+#      osx_image: xcode10.3

    - os: osx
-      compiler: clang++
-      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,17
+      osx_image: xcode11.2

 install:
-  - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+  - GIT_FETCH_JOBS=8
+  - BOOST_BRANCH=develop
+  - if [ "$TRAVIS_BRANCH" = "master" ]; then BOOST_BRANCH=master; fi
  - cd ..
  - git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
  - cd boost-root
-  - git submodule update --init tools/build
-  - git submodule update --init libs/assert
-  - git submodule update --init libs/config
-  - git submodule update --init libs/core
-  - git submodule update --init libs/preprocessor
-  - git submodule update --init libs/static_assert
-  - git submodule update --init libs/throw_exception
-  - git submodule update --init libs/type_traits
+  - git submodule init tools/build
+  - git submodule init tools/boost_install
+  - git submodule init libs/headers
+  - git submodule init libs/assert
+  - git submodule init libs/config
+  - git submodule init libs/core
+  - git submodule init libs/io
+  - git submodule init libs/preprocessor
+  - git submodule init libs/static_assert
+  - git submodule init libs/throw_exception
+  - git submodule init libs/type_traits
+  - git submodule init libs/container_hash
+  - git submodule init libs/integer
+  - git submodule init libs/detail
+  - git submodule update --jobs $GIT_FETCH_JOBS
  - cp -r $TRAVIS_BUILD_DIR/* libs/utility
  - ./bootstrap.sh
  - ./b2 headers
@@ -199,7 +374,8 @@ install:
 script:
  - |-
    echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
-  - ./b2 -j3 libs/utility/test toolset=$TOOLSET cxxstd=$CXXSTD
+  - BUILD_JOBS=`(nproc || sysctl -n hw.ncpu) 2> /dev/null`
+  - ./b2 -j $BUILD_JOBS libs/utility/test toolset=$TOOLSET cxxstd=$CXXSTD ${CXXFLAGS:+cxxflags="$CXXFLAGS"} ${LINKFLAGS:+linkflags="$LINKFLAGS"}

 notifications:
  email:
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -0,0 +1,28 @@
+# Copyright 2018 Peter Dimov
+# Copyright 2018 Andrey Semashev
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
+
+# Partial (add_subdirectory only) and experimental CMake support
+# Subject to change; please do not rely on the contents of this file yet.
+
+cmake_minimum_required(VERSION 3.5)
+
+project(BoostUtility LANGUAGES CXX)
+
+add_library(boost_utility INTERFACE)
+add_library(Boost::utility ALIAS boost_utility)
+
+target_include_directories(boost_utility INTERFACE include)
+
+target_link_libraries(boost_utility
+    INTERFACE
+        Boost::config
+        Boost::container_hash
+        Boost::core
+        Boost::io
+        Boost::preprocessor
+        Boost::static_assert
+        Boost::throw_exception
+        Boost::type_traits
+)
--- a/README.md
+++ b/README.md
@@ -0,0 +1,24 @@
+# ![Boost.Utility](doc/logo.png)
+
+Boost.Utility, part of collection of the [Boost C++ Libraries](https://github.com/boostorg), provides a number of smaller components, too small to be called libraries in their own right. See the documentation for the list of components.
+
+### Directories
+
+* **doc** - Documentation sources
+* **include** - Interface headers of Boost.Utility
+* **test** - Boost.Utility unit tests
+
+### More information
+
+* [Documentation](https://boost.org/libs/utility)
+* [Report bugs](https://github.com/boostorg/utility/issues/new). Be sure to mention Boost version, Boost.Utility component, platform and compiler you're using. A small compilable code sample to reproduce the problem is always good as well.
+* Submit your patches as pull requests against **develop** branch. Note that by submitting patches you agree to license your modifications under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).
+
+### Build status
+
+Master: [![Travis CI](https://travis-ci.org/boostorg/utility.svg?branch=master)](https://travis-ci.org/boostorg/utility)
+Develop: [![Travis CI](https://travis-ci.org/boostorg/utility.svg?branch=develop)](https://travis-ci.org/boostorg/utility)
+
+### License
+
+Distributed under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,5 @@
-# Copyright 2016, 2017 Peter Dimov
+# Copyright 2016-2019 Peter Dimov
+# Copyright 2019 Andrey Semashev
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)

@@ -14,29 +15,68 @@ 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-14.0
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      TOOLSET: msvc-14.1
+    - TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0
+      ADDRMD: 32
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: msvc-12.0,msvc-14.0
+      ADDRMD: 32,64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: msvc-14.1
      CXXSTD: 14,17
+      ADDRMD: 32,64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    - TOOLSET: msvc-14.2
+      ADDRMD: 32,64
+      CXXSTD: 14,17
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    - TOOLSET: clang-win
+      ADDRMD: 32,64
+      CXXSTD: 14,17
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    - TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+      ADDPATH: C:\cygwin\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+      ADDPATH: C:\cygwin64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+      ADDPATH: C:\mingw\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+      ADDPATH: C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 03,11,14,1z
+      ADDPATH: C:\mingw-w64\x86_64-7.3.0-posix-seh-rt_v5-rev0\mingw64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015

 install:
+  - set GIT_FETCH_JOBS=8
  - set BOOST_BRANCH=develop
  - if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
  - cd ..
  - git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
  - cd boost-root
-  - git submodule update --init tools/build
-  - git submodule update --init libs/assert
-  - git submodule update --init libs/config
-  - git submodule update --init libs/core
-  - git submodule update --init libs/preprocessor
-  - git submodule update --init libs/static_assert
-  - git submodule update --init libs/throw_exception
-  - git submodule update --init libs/type_traits
-  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\utility
+  - git submodule init tools/build
+  - git submodule init tools/boost_install
+  - git submodule init libs/headers
+  - git submodule init libs/assert
+  - git submodule init libs/config
+  - git submodule init libs/core
+  - git submodule init libs/io
+  - git submodule init libs/preprocessor
+  - git submodule init libs/static_assert
+  - git submodule init libs/throw_exception
+  - git submodule init libs/type_traits
+  - git submodule init libs/container_hash
+  - git submodule init libs/integer
+  - git submodule init libs/detail
+  - git submodule update --jobs %GIT_FETCH_JOBS%
+  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\utility\
  - cmd /c bootstrap
  - b2 -d0 headers

@@ -45,4 +85,5 @@ build: off
 test_script:
  - PATH=%ADDPATH%%PATH%
  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
-  - b2 -j3 libs/utility/test toolset=%TOOLSET% %CXXSTD%
+  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
+  - b2 -j %NUMBER_OF_PROCESSORS% libs/utility/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release
--- a/call_traits.htm
+++ b/call_traits.htm
@@ -493,7 +493,7 @@ call_traits can not be used with reference or array types.</p>
 <h4>Example 1:</h4>

 <p>The following class is a trivial class that stores some type T
-by value (see the <a href="call_traits_test.cpp">call_traits_test.cpp</a>
+by value (see the <a href="test/call_traits_test.cpp">call_traits_test.cpp</a>
 file), the aim is to illustrate how each of the available
 call_traits typedefs may be used:</p>

--- a/doc/base_from_member.qbk
+++ b/doc/base_from_member.qbk
@@ -356,7 +356,7 @@ templates that can be controlled and automated with macros. The
 implementation uses the [@../../../preprocessor/index.html Preprocessor library].

 * [@http://www.boost.org/people/daryle_walker.html">Daryle Walker] started the
-library. Contributed the test file [@../../base_from_member_test.cpp
+library. Contributed the test file [@../../test/base_from_member_test.cpp
 base_from_member_test.cpp].

 [endsect]
--- a/doc/declval.qbk
+++ b/doc/declval.qbk
@@ -1,6 +1,6 @@
 [/
 / Copyright (c) 2008 Howard Hinnant
- / Copyright (c) 2009-20012 Vicente J. Botet Escriba
+ / Copyright (c) 2009-2012 Vicente J. Botet Escriba
 /
 / 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)
--- a/doc/logo.png
+++ b/doc/logo.png
--- a/doc/logo.svg
+++ b/doc/logo.svg
@@ -0,0 +1,539 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
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+           x="112.74373"
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+       style="fill:#ffffff;fill-opacity:1;stroke:none"
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--- a/doc/string_ref.qbk
+++ b/doc/string_ref.qbk
@@ -156,6 +156,11 @@ String-like operations:
 [section History]
 [/===============]

+[heading boost 1.71]
+* Glen Fernandes updated the implementation of the stream insertion operator to
+write directly to the `basic_streambuf` and refactored that functionality into
+a common utility.
+
 [heading boost 1.53]
 * Introduced
    
--- a/include/boost/detail/call_traits.hpp
+++ b/include/boost/detail/call_traits.hpp
@@ -100,7 +100,7 @@ struct call_traits<T&>
   typedef T& param_type;  // hh removed const
 };

-#if BOOST_WORKAROUND( __BORLANDC__,  < 0x5A0 )
+#if BOOST_WORKAROUND( BOOST_BORLANDC,  < 0x5A0 )
 // these are illegal specialisations; cv-qualifies applied to
 // references have no effect according to [8.3.2p1],
 // C++ Builder requires them though as it treats cv-qualified
--- a/include/boost/detail/compressed_pair.hpp
+++ b/include/boost/detail/compressed_pair.hpp
@@ -24,6 +24,7 @@

 #include <boost/type_traits/remove_cv.hpp>
 #include <boost/type_traits/is_empty.hpp>
+#include <boost/type_traits/is_final.hpp>
 #include <boost/type_traits/is_same.hpp>
 #include <boost/call_traits.hpp>

@@ -42,6 +43,14 @@ class compressed_pair;

 namespace details
 {
+   template<class T, bool E = boost::is_final<T>::value>
+   struct compressed_pair_empty
+      : ::boost::false_type { };
+
+   template<class T>
+   struct compressed_pair_empty<T, false>
+      : ::boost::is_empty<T> { };
+
   // JM altered 26 Jan 2000:
   template <class T1, class T2, bool IsSame, bool FirstEmpty, bool SecondEmpty>
   struct compressed_pair_switch;
@@ -343,8 +352,8 @@ class compressed_pair
                    T1,
                    T2,
                    ::boost::is_same<typename remove_cv<T1>::type, typename remove_cv<T2>::type>::value,
-                    ::boost::is_empty<T1>::value,
-                    ::boost::is_empty<T2>::value>::value>
+                    ::boost::details::compressed_pair_empty<T1>::value,
+                    ::boost::details::compressed_pair_empty<T2>::value>::value>
 {
 private:
   typedef details::compressed_pair_imp<T1, T2,
@@ -352,8 +361,8 @@ private:
                    T1,
                    T2,
                    ::boost::is_same<typename remove_cv<T1>::type, typename remove_cv<T2>::type>::value,
-                    ::boost::is_empty<T1>::value,
-                    ::boost::is_empty<T2>::value>::value> base;
+                    ::boost::details::compressed_pair_empty<T1>::value,
+                    ::boost::details::compressed_pair_empty<T2>::value>::value> base;
 public:
   typedef T1                                                 first_type;
   typedef T2                                                 second_type;
@@ -388,8 +397,8 @@ class compressed_pair<T, T>
                    T,
                    T,
                    ::boost::is_same<typename remove_cv<T>::type, typename remove_cv<T>::type>::value,
-                    ::boost::is_empty<T>::value,
-                    ::boost::is_empty<T>::value>::value>
+                    ::boost::details::compressed_pair_empty<T>::value,
+                    ::boost::details::compressed_pair_empty<T>::value>::value>
 {
 private:
   typedef details::compressed_pair_imp<T, T,
@@ -397,8 +406,8 @@ private:
                    T,
                    T,
                    ::boost::is_same<typename remove_cv<T>::type, typename remove_cv<T>::type>::value,
-                    ::boost::is_empty<T>::value,
-                    ::boost::is_empty<T>::value>::value> base;
+                    ::boost::details::compressed_pair_empty<T>::value,
+                    ::boost::details::compressed_pair_empty<T>::value>::value> base;
 public:
   typedef T                                                  first_type;
   typedef T                                                  second_type;
--- a/include/boost/operators.hpp
+++ b/include/boost/operators.hpp
@@ -100,6 +100,11 @@
 #include <boost/config.hpp>
 #include <boost/detail/workaround.hpp>
 #include <boost/core/addressof.hpp>
+#if defined(__cpp_impl_three_way_comparison)
+#include <boost/core/enable_if.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/type_traits/declval.hpp>
+#endif

 #if defined(__sgi) && !defined(__GNUC__)
 #   pragma set woff 1234
@@ -109,6 +114,13 @@
 #   pragma warning( disable : 4284 ) // complaint about return type of
 #endif                               // operator-> not begin a UDT

+// Define BOOST_OPERATORS_CONSTEXPR to be like BOOST_CONSTEXPR but empty under MSVC < v19.22
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1922)
+#define BOOST_OPERATORS_CONSTEXPR
+#else
+#define BOOST_OPERATORS_CONSTEXPR BOOST_CONSTEXPR
+#endif
+
 // In this section we supply the xxxx1 and xxxx2 forms of the operator
 // templates, which are explicitly targeted at the 1-type-argument and
 // 2-type-argument operator forms, respectively.
@@ -132,34 +144,46 @@ template <typename T> class empty_base {};
 template <class T, class U, class B = operators_detail::empty_base<T> >
 struct less_than_comparable2 : B
 {
-     friend bool operator<=(const T& x, const U& y) { return !static_cast<bool>(x > y); }
-     friend bool operator>=(const T& x, const U& y) { return !static_cast<bool>(x < y); }
-     friend bool operator>(const U& x, const T& y)  { return y < x; }
-     friend bool operator<(const U& x, const T& y)  { return y > x; }
-     friend bool operator<=(const U& x, const T& y) { return !static_cast<bool>(y < x); }
-     friend bool operator>=(const U& x, const T& y) { return !static_cast<bool>(y > x); }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator<=(const T& x, const U& y) { return !static_cast<bool>(x > y); }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator>=(const T& x, const U& y) { return !static_cast<bool>(x < y); }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator>(const U& x, const T& y)  { return y < x; }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator<(const U& x, const T& y)  { return y > x; }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator<=(const U& x, const T& y) { return !static_cast<bool>(y < x); }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator>=(const U& x, const T& y) { return !static_cast<bool>(y > x); }
 };

 template <class T, class B = operators_detail::empty_base<T> >
 struct less_than_comparable1 : B
 {
-     friend bool operator>(const T& x, const T& y)  { return y < x; }
-     friend bool operator<=(const T& x, const T& y) { return !static_cast<bool>(y < x); }
-     friend bool operator>=(const T& x, const T& y) { return !static_cast<bool>(x < y); }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator>(const T& x, const T& y)  { return y < x; }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator<=(const T& x, const T& y) { return !static_cast<bool>(y < x); }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator>=(const T& x, const T& y) { return !static_cast<bool>(x < y); }
 };

 template <class T, class U, class B = operators_detail::empty_base<T> >
 struct equality_comparable2 : B
 {
-     friend bool operator==(const U& y, const T& x) { return x == y; }
-     friend bool operator!=(const U& y, const T& x) { return !static_cast<bool>(x == y); }
-     friend bool operator!=(const T& y, const U& x) { return !static_cast<bool>(y == x); }
+#if defined(__cpp_impl_three_way_comparison)
+     template< typename R = decltype(boost::declval< T const& >() == boost::declval< U const& >()) >
+     friend BOOST_OPERATORS_CONSTEXPR
+     typename boost::enable_if_c< !boost::is_same< R, bool >::value, bool >::type
+     operator==(const U& y, const T& x) { return x == y; }
+
+     template< typename R = decltype(boost::declval< T const& >() == boost::declval< U const& >()) >
+     friend BOOST_OPERATORS_CONSTEXPR
+     typename boost::enable_if_c< !boost::is_same< R, bool >::value, bool >::type
+     operator!=(const U& y, const T& x) { return !static_cast<bool>(x == y); }
+#else
+     friend BOOST_OPERATORS_CONSTEXPR bool operator==(const U& y, const T& x) { return x == y; }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator!=(const U& y, const T& x) { return !static_cast<bool>(x == y); }
+#endif
+     friend BOOST_OPERATORS_CONSTEXPR bool operator!=(const T& x, const U& y) { return !static_cast<bool>(x == y); }
 };

 template <class T, class B = operators_detail::empty_base<T> >
 struct equality_comparable1 : B
 {
-     friend bool operator!=(const T& x, const T& y) { return !static_cast<bool>(x == y); }
+     friend BOOST_OPERATORS_CONSTEXPR bool operator!=(const T& x, const T& y) { return !static_cast<bool>(x == y); }
 };

 // A macro which produces "name_2left" from "name".
@@ -362,7 +386,7 @@ BOOST_BINARY_OPERATOR( right_shiftable, >> )
 template <class T, class U, class B = operators_detail::empty_base<T> >
 struct equivalent2 : B
 {
-  friend bool operator==(const T& x, const U& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator==(const T& x, const U& y)
  {
    return !static_cast<bool>(x < y) && !static_cast<bool>(x > y);
  }
@@ -371,7 +395,7 @@ struct equivalent2 : B
 template <class T, class B = operators_detail::empty_base<T> >
 struct equivalent1 : B
 {
-  friend bool operator==(const T&x, const T&y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator==(const T&x, const T&y)
  {
    return !static_cast<bool>(x < y) && !static_cast<bool>(y < x);
  }
@@ -380,28 +404,28 @@ struct equivalent1 : B
 template <class T, class U, class B = operators_detail::empty_base<T> >
 struct partially_ordered2 : B
 {
-  friend bool operator<=(const T& x, const U& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator<=(const T& x, const U& y)
    { return static_cast<bool>(x < y) || static_cast<bool>(x == y); }
-  friend bool operator>=(const T& x, const U& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator>=(const T& x, const U& y)
    { return static_cast<bool>(x > y) || static_cast<bool>(x == y); }
-  friend bool operator>(const U& x, const T& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator>(const U& x, const T& y)
    { return y < x; }
-  friend bool operator<(const U& x, const T& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator<(const U& x, const T& y)
    { return y > x; }
-  friend bool operator<=(const U& x, const T& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator<=(const U& x, const T& y)
    { return static_cast<bool>(y > x) || static_cast<bool>(y == x); }
-  friend bool operator>=(const U& x, const T& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator>=(const U& x, const T& y)
    { return static_cast<bool>(y < x) || static_cast<bool>(y == x); }
 };

 template <class T, class B = operators_detail::empty_base<T> >
 struct partially_ordered1 : B
 {
-  friend bool operator>(const T& x, const T& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator>(const T& x, const T& y)
    { return y < x; }
-  friend bool operator<=(const T& x, const T& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator<=(const T& x, const T& y)
    { return static_cast<bool>(x < y) || static_cast<bool>(x == y); }
-  friend bool operator>=(const T& x, const T& y)
+  friend BOOST_OPERATORS_CONSTEXPR bool operator>=(const T& x, const T& y)
    { return static_cast<bool>(y < x) || static_cast<bool>(x == y); }
 };

--- a/include/boost/operators_v1.hpp
+++ b/include/boost/operators_v1.hpp
@@ -144,9 +144,11 @@ struct less_than_comparable1 : B
 template <class T, class U, class B = ::boost::detail::empty_base<T> >
 struct equality_comparable2 : B
 {
+#if !defined(__cpp_impl_three_way_comparison)
     friend bool operator==(const U& y, const T& x) { return x == y; }
     friend bool operator!=(const U& y, const T& x) { return !static_cast<bool>(x == y); }
-     friend bool operator!=(const T& y, const U& x) { return !static_cast<bool>(y == x); }
+#endif
+     friend bool operator!=(const T& x, const U& y) { return !static_cast<bool>(x == y); }
 };

 template <class T, class B = ::boost::detail::empty_base<T> >
--- a/include/boost/utility/detail/result_of_iterate.hpp
+++ b/include/boost/utility/detail/result_of_iterate.hpp
@@ -22,7 +22,7 @@
 # define BOOST_RESULT_OF_ARGS BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)
 #endif

-#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))
 template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
 struct tr1_result_of<F(BOOST_RESULT_OF_ARGS)>
    : conditional<
@@ -151,7 +151,7 @@ struct cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)),

 #else // defined(BOOST_RESULT_OF_USE_DECLTYPE) || defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)

-#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))
 template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
 struct result_of<F(BOOST_RESULT_OF_ARGS)>
    : tr1_result_of<F(BOOST_RESULT_OF_ARGS)> { };
@@ -177,7 +177,7 @@ struct tr1_result_of_impl<R (&)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), F
  typedef R type;
 };

-#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))
 template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
 struct tr1_result_of_impl<R (T0::*)
                     (BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T)),
--- a/include/boost/utility/string_ref.hpp
+++ b/include/boost/utility/string_ref.hpp
@@ -1,5 +1,6 @@
 /*
   Copyright (c) Marshall Clow 2012-2015.
+   Copyright (c) Glen Joseph Fernandes 2019 (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)
@@ -17,6 +18,7 @@

 #include <boost/config.hpp>
 #include <boost/detail/workaround.hpp>
+#include <boost/io/ostream_put.hpp>
 #include <boost/utility/string_ref_fwd.hpp>
 #include <boost/throw_exception.hpp>

@@ -181,6 +183,7 @@ namespace boost {
            }

        size_type find(basic_string_ref s) const {
+            if (s.empty()) return 0;
            const_iterator iter = std::search ( this->cbegin (), this->cend (),
                                                s.cbegin (), s.cend (), traits::eq );
            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
@@ -193,6 +196,7 @@ namespace boost {
            }

        size_type rfind(basic_string_ref s) const {
+            if (s.empty()) return 0;
            const_reverse_iterator iter = std::search ( this->crbegin (), this->crend (),
                                                s.crbegin (), s.crend (), traits::eq );
            return iter == this->crend () ? npos : (std::distance(iter, this->crend()) - s.size());
@@ -419,52 +423,11 @@ namespace boost {
        return basic_string_ref<charT, traits>(x) >= y;
        }

-    namespace detail {
-
-        template<class charT, class traits>
-        inline void sr_insert_fill_chars(std::basic_ostream<charT, traits>& os, std::size_t n) {
-            enum { chunk_size = 8 };
-            charT fill_chars[chunk_size];
-            std::fill_n(fill_chars, static_cast< std::size_t >(chunk_size), os.fill());
-            for (; n >= chunk_size && os.good(); n -= chunk_size)
-                os.write(fill_chars, static_cast< std::size_t >(chunk_size));
-            if (n > 0 && os.good())
-                os.write(fill_chars, n);
-            }
-
-        template<class charT, class traits>
-        void sr_insert_aligned(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
-            const std::size_t size = str.size();
-            const std::size_t alignment_size = static_cast< std::size_t >(os.width()) - size;
-            const bool align_left = (os.flags() & std::basic_ostream<charT, traits>::adjustfield) == std::basic_ostream<charT, traits>::left;
-            if (!align_left) {
-                detail::sr_insert_fill_chars(os, alignment_size);
-                if (os.good())
-                    os.write(str.data(), size);
-                }
-            else {
-                os.write(str.data(), size);
-                if (os.good())
-                    detail::sr_insert_fill_chars(os, alignment_size);
-                }
-            }
-
-        } // namespace detail
-
    // Inserter
    template<class charT, class traits>
    inline std::basic_ostream<charT, traits>&
    operator<<(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
-        if (os.good()) {
-            const std::size_t size = str.size();
-            const std::size_t w = static_cast< std::size_t >(os.width());
-            if (w <= size)
-                os.write(str.data(), size);
-            else
-                detail::sr_insert_aligned(os, str);
-            os.width(0);
-            }
-        return os;
+        return boost::io::ostream_put(os, str.data(), str.size());
        }

 #if 0
--- a/include/boost/utility/string_view.hpp
+++ b/include/boost/utility/string_view.hpp
@@ -1,6 +1,7 @@
 /*
   Copyright (c) Marshall Clow 2012-2015.
   Copyright (c) Beman Dawes 2015
+   Copyright (c) Glen Joseph Fernandes 2019 (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)
@@ -19,8 +20,10 @@

 #include <boost/config.hpp>
 #include <boost/detail/workaround.hpp>
+#include <boost/io/ostream_put.hpp>
 #include <boost/utility/string_view_fwd.hpp>
 #include <boost/throw_exception.hpp>
+#include <boost/container_hash/hash_fwd.hpp>

 #include <cstddef>
 #include <stdexcept>
@@ -183,7 +186,7 @@ namespace boost {
            if (pos > size())
                BOOST_THROW_EXCEPTION(std::out_of_range("string_view::copy" ));
            size_type rlen = (std::min)(n, len_ - pos);
-    		traits_type::copy(s, data() + pos, rlen);
+            traits_type::copy(s, data() + pos, rlen);
            return rlen;
            }

@@ -570,53 +573,12 @@ namespace boost {
        return basic_string_view<charT, traits>(x) >= y;
        }

-    namespace detail {
-
-        template<class charT, class traits>
-        inline void sv_insert_fill_chars(std::basic_ostream<charT, traits>& os, std::size_t n) {
-            enum { chunk_size = 8 };
-            charT fill_chars[chunk_size];
-            std::fill_n(fill_chars, static_cast< std::size_t >(chunk_size), os.fill());
-            for (; n >= chunk_size && os.good(); n -= chunk_size)
-                os.write(fill_chars, static_cast< std::size_t >(chunk_size));
-            if (n > 0 && os.good())
-                os.write(fill_chars, n);
-            }
-
-        template<class charT, class traits>
-        void sv_insert_aligned(std::basic_ostream<charT, traits>& os, const basic_string_view<charT,traits>& str) {
-            const std::size_t size = str.size();
-            const std::size_t alignment_size = static_cast< std::size_t >(os.width()) - size;
-            const bool align_left = (os.flags() & std::basic_ostream<charT, traits>::adjustfield) == std::basic_ostream<charT, traits>::left;
-            if (!align_left) {
-                detail::sv_insert_fill_chars(os, alignment_size);
-                if (os.good())
-                    os.write(str.data(), size);
-                }
-            else {
-                os.write(str.data(), size);
-                if (os.good())
-                    detail::sv_insert_fill_chars(os, alignment_size);
-                }
-            }
-
-        } // namespace detail
-
    // Inserter
    template<class charT, class traits>
    inline std::basic_ostream<charT, traits>&
    operator<<(std::basic_ostream<charT, traits>& os,
      const basic_string_view<charT,traits>& str) {
-        if (os.good()) {
-            const std::size_t size = str.size();
-            const std::size_t w = static_cast< std::size_t >(os.width());
-            if (w <= size)
-                os.write(str.data(), size);
-            else
-                detail::sv_insert_aligned(os, str);
-            os.width(0);
-            }
-        return os;
+        return boost::io::ostream_put(os, str.data(), str.size());
        }

 #if 0
@@ -690,6 +652,10 @@ namespace boost {
        }
 #endif

+    template <class charT, class traits>
+    std::size_t hash_value(basic_string_view<charT, traits> s) {
+        return boost::hash_range(s.begin(), s.end());
+        }
 }

 #if 0
--- a/include/boost/utility/value_init.hpp
+++ b/include/boost/utility/value_init.hpp
@@ -1,4 +1,5 @@
 // (C) Copyright 2002-2008, Fernando Luis Cacciola Carballal.
+// Copyright 2020 Peter Dimov
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
@@ -21,15 +22,10 @@
 // issues, by clearing the bytes of T, before constructing the T object it
 // contains. More details on these issues are at libs/utility/value_init.htm

-#include <boost/aligned_storage.hpp>
 #include <boost/config.hpp> // For BOOST_NO_COMPLETE_VALUE_INITIALIZATION.
-#include <boost/detail/workaround.hpp>
-#include <boost/static_assert.hpp>
-#include <boost/type_traits/cv_traits.hpp>
-#include <boost/type_traits/alignment_of.hpp>
 #include <boost/swap.hpp>
 #include <cstring>
-#include <new>
+#include <cstddef>

 #ifdef BOOST_MSVC
 #pragma warning(push)
@@ -60,92 +56,58 @@

 namespace boost {

+namespace detail {
+
+  struct zero_init
+  {
+    zero_init()
+    {
+    }
+
+    zero_init( void * p, std::size_t n )
+    {
+      std::memset( p, 0, n );
+    }
+  };
+
+} // namespace detail
+
 template<class T>
 class initialized
+#if BOOST_DETAIL_VALUE_INIT_WORKAROUND
+  : detail::zero_init
+#endif
 {
-  private :
-    struct wrapper
-    {
-#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x592))
-      typename
-#endif 
-      remove_const<T>::type data;
+  private:

-      BOOST_GPU_ENABLED
-      wrapper()
-      :
-      data()
-      {
-      }
-
-      BOOST_GPU_ENABLED
-      wrapper(T const & arg)
-      :
-      data(arg)
-      {
-      }
-    };
-
-    mutable
-#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x592))
-      typename
-#endif 
-      aligned_storage<sizeof(wrapper), alignment_of<wrapper>::value>::type x;
-
-    BOOST_GPU_ENABLED
-    wrapper * wrapper_address() const
-    {
-      return static_cast<wrapper *>( static_cast<void*>(&x));
-    }
+    T data_;

  public :

    BOOST_GPU_ENABLED
-    initialized()
-    {
+    initialized():
 #if BOOST_DETAIL_VALUE_INIT_WORKAROUND
-      std::memset(&x, 0, sizeof(x));
+      zero_init( &const_cast< char& >( reinterpret_cast<char const volatile&>( data_ ) ), sizeof( data_ ) ),
 #endif
-      new (wrapper_address()) wrapper();
+      data_()
+    {
    }

    BOOST_GPU_ENABLED
-    initialized(initialized const & arg)
+    explicit initialized(T const & arg): data_( arg )
    {
-      new (wrapper_address()) wrapper( static_cast<wrapper const &>(*(arg.wrapper_address())));
-    }
-
-    BOOST_GPU_ENABLED
-    explicit initialized(T const & arg)
-    {
-      new (wrapper_address()) wrapper(arg);
-    }
-
-    BOOST_GPU_ENABLED
-    initialized & operator=(initialized const & arg)
-    {
-      // Assignment is only allowed when T is non-const.
-      BOOST_STATIC_ASSERT( ! is_const<T>::value );
-      *wrapper_address() = static_cast<wrapper const &>(*(arg.wrapper_address()));
-      return *this;
-    }
-
-    BOOST_GPU_ENABLED
-    ~initialized()
-    {
-      wrapper_address()->wrapper::~wrapper();
    }

    BOOST_GPU_ENABLED
    T const & data() const
    {
-      return wrapper_address()->data;
+      return data_;
    }

    BOOST_GPU_ENABLED
    T& data()
    {
-      return wrapper_address()->data;
+      return data_;
    }

    BOOST_GPU_ENABLED
@@ -157,13 +119,13 @@ class initialized
    BOOST_GPU_ENABLED
    operator T const &() const
    {
-      return wrapper_address()->data;
+      return data_;
    }

    BOOST_GPU_ENABLED
    operator T&()
    {
-      return wrapper_address()->data;
+      return data_;
    }

 } ;
--- a/index.html
+++ b/index.html
@@ -12,29 +12,31 @@
 		<p>The Boost Utility Library isn't really a single library at all. It is just a 
 			collection for components too small to be called libraries in their own right.</p>
 		<p>But that doesn't mean there isn't useful stuff here. Take a look:</p>
-		<blockquote>
-			<p>
-				<a href="../core/doc/html/core/addressof.html">addressof</a> (moved to the Boost.Core library)<br>
-				<a href="doc/html/base_from_member.html">base_from_member</a><br>
-				<a href="utility.htm#BOOST_BINARY">BOOST_BINARY</a><br>
-				<a href="call_traits.htm">call_traits</a><br>
-				<a href="../core/doc/html/core/checked_delete.html">checked_delete</a> (moved to the Boost.Core library)<br>
-				<a href="doc/html/compressed_pair.html">compressed_pair</a><br>
-				<a href="../type_traits/doc/html/boost_typetraits/reference/declval.html">declval</a> (moved to the Boost.TypeTraits library)<br>
-				<a href="../core/doc/html/core/enable_if.html">enable_if</a> (moved to the Boost.Core library)<br>
-				<a href="in_place_factories.html">in_place_factory</a><br>
-				<a href="iterator_adaptors.htm">iterator_adaptors</a><br>
-				<a href="../iterator/doc/generator_iterator.htm">generator iterator adaptors</a> (moved to the Boost.Iterator library)<br>
-				<a href="../iterator/doc/html/iterator/algorithms/next_prior.html">next/prior</a> (moved to the Boost.Iterator library)<br>
-				<a href="../core/doc/html/core/noncopyable.html">noncopyable</a> (moved to the Boost.Core library)<br>
-				<a href="operators.htm">operators</a><br>
-				<a href="utility.htm#result_of">result_of</a><br>
-				<a href="throw_exception.html">throw_exception</a><br>
-				<a href="utility.htm">utility</a><br>
-            <a href="doc/html/string_ref.html">string_ref</a><br>
-            <a href="value_init.htm">value_init</a><br>
-         </p>
-		</blockquote>
+        <ul>
+        <li><a href="doc/html/base_from_member.html">base_from_member</a></li>
+        <li><a href="utility.htm#BOOST_BINARY">BOOST_BINARY</a></li>
+        <li><a href="call_traits.htm">call_traits</a></li>
+        <li><a href="doc/html/compressed_pair.html">compressed_pair</a></li>
+        <li><a href="in_place_factories.html">in_place_factory</a></li>
+        <li><a href="iterator_adaptors.htm">iterator_adaptors</a></li>
+        <li><a href="operators.htm">operators</a></li>
+        <li><a href="utility.htm#result_of">result_of</a></li>
+        <li><a href="throw_exception.html">throw_exception</a></li>
+        <li><a href="utility.htm">utility</a></li>
+        <li><a href="doc/html/string_ref.html">string_ref</a></li>
+        <li><a href="value_init.htm">value_init</a></li>
+        </ul>
+        <p>Over time useful stuff here has moved to more appropriate Boost libraries:</p>
+        <ul>
+        <li><a href="../core/doc/html/core/addressof.html">addressof</a> (moved to Boost.Core)</li>
+        <li><a href="../core/doc/html/core/checked_delete.html">checked_delete</a> (moved to Boost.Core)</li>
+        <li><a href="../type_traits/doc/html/boost_typetraits/reference/declval.html">declval</a> (moved to Boost.TypeTraits)</li>
+        <li><a href="../core/doc/html/core/enable_if.html">enable_if</a> (moved to Boost.Core)</li>
+        <li><a href="../iterator/doc/generator_iterator.htm">generator iterator adaptors</a> (moved to Boost.Iterator)</li>
+        <li><a href="../iterator/doc/html/iterator/algorithms/next_prior.html">next/prior</a> (moved to Boost.Iterator)</li>
+        <li><a href="../core/doc/html/core/noncopyable.html">noncopyable</a> (moved to Boost.Core)</li>
+        <li><a href="../io/doc/html/io.html">ostream_string</a> (moved to Boost.IO)</li>
+        </ul>
 		<hr>
 		<p>&copy; Copyright Beman Dawes, 2001</p>
        <p>Distributed under the Boost Software License, Version 1.0. (See 
--- a/meta/libraries.json
+++ b/meta/libraries.json
@@ -98,6 +98,19 @@
            "Daniel Walker <daniel.j.walker -at- gmail.com>"
        ]
    },
+    {
+        "key": "utility/string_ref",
+        "name": "string_ref",
+        "description": "String view templates.",
+        "documentation": "doc/html/string_ref.html",
+        "category": [
+            "Containers"
+        ],
+        "authors": "Marshall Clow",
+        "maintainers": [
+            "Marshall Clow <marshall -at- idio.com>"
+        ]
+    },
    {
        "key": "utility/value_initialized",
        "name": "Value Initialized",
--- a/operators.htm
+++ b/operators.htm
@@ -119,8 +119,8 @@
    also want <code>x &gt; y, x &gt;= y,</code> and <code>x &lt;= y</code>.
    Moreover, unless your class has really surprising behavior, some of these
    related operators can be defined in terms of others (e.g. <code>x &gt;= y
-    &lt;=&gt; !(x &lt; y)</code>). Replicating this boilerplate for multiple
-    classes is both tedious and error-prone. The <cite><a href=
+    is equivalent to !(x &lt; y)</code>). Replicating this boilerplate for
+    multiple classes is both tedious and error-prone. The <cite><a href=
    "../../boost/operators.hpp">boost/operators.hpp</a></cite> templates help
    by generating operators for you at namespace scope based on other
    operators you've defined in your class.</p>
@@ -454,7 +454,7 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
      </caption>

      <tr>
-        <td colspan="3">
+        <td colspan="4">
          <table align="center" border="1">
            <caption>
              <em>Key</em>
@@ -482,6 +482,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <th>Supplied Operations</th>

        <th>Requirements</th>
+
+        <th>Propagates <code>constexpr</code>?</th>
      </tr>

      <tr>
@@ -496,6 +498,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>t &lt; t1</code>.<br>
         Return convertible to <code>bool</code>. See the <a href=
        "#ordering">Ordering Note</a>.</td>
+
+        <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>

      <tr>
@@ -513,6 +518,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>t &lt; u</code>. <code>t &gt; u</code>.<br>
         Returns convertible to <code>bool</code>. See the <a href=
        "#ordering">Ordering Note</a>.</td>
+
+        <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>

      <tr>
@@ -524,6 +532,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);

        <td><code>t == t1</code>.<br>
         Return convertible to <code>bool</code>.</td>
+
+        <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>

      <tr>
@@ -537,6 +548,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);

        <td><code>t == u</code>.<br>
         Return convertible to <code>bool</code>.</td>
+
+         <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>

      <tr>
@@ -548,6 +562,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp += t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -560,6 +576,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp += u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -572,6 +590,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp -= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -584,6 +604,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp -= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -594,6 +616,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);

        <td><code>T temp(u); temp -= t</code>.<br>
         Return convertible to <code>T</code>.</td>
+
+         <td>No</td>
      </tr>

      <tr>
@@ -606,6 +630,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp *= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -619,6 +645,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp *= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -630,6 +658,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp /= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -641,6 +671,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp /= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -651,6 +683,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);

        <td><code>T temp(u); temp /= t</code>.<br>
         Return convertible to <code>T</code>.</td>
+
+         <td>No</td>
      </tr>

      <tr>
@@ -662,6 +696,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp %= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -673,6 +709,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp %= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -683,6 +721,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);

        <td><code>T temp(u); temp %= t</code>.<br>
         Return convertible to <code>T</code>.</td>
+
+         <td>No</td>
      </tr>

      <tr>
@@ -694,6 +734,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp |= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -706,6 +748,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp |= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -717,6 +761,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp &amp;= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -729,6 +775,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp &amp;= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -740,6 +788,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp ^= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -752,6 +802,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp ^= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -762,6 +814,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);

        <td><code>T temp(t); ++t</code><br>
         Return convertible to <code>T</code>.</td>
+
+         <td>No</td>
      </tr>

      <tr>
@@ -772,6 +826,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);

        <td><code>T temp(t); --t;</code><br>
         Return convertible to <code>T</code>.</td>
+
+         <td>No</td>
      </tr>

      <tr>
@@ -784,6 +840,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp &lt;&lt;= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -796,6 +854,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp &lt;&lt;= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -808,6 +868,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp &gt;&gt;= t1</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -820,6 +882,8 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>T temp(t); temp &gt;&gt;= u</code>.<br>
         Return convertible to <code>T</code>. See the <a href=
        "#symmetry">Symmetry Note</a>.</td>
+
+        <td>No</td>
      </tr>

      <tr>
@@ -831,6 +895,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>t &lt; t1</code>.<br>
         Return convertible to <code>bool</code>. See the <a href=
        "#ordering">Ordering Note</a>.</td>
+
+        <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>

      <tr>
@@ -842,6 +909,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>t &lt; u</code>. <code>t &gt; u</code>.<br>
         Returns convertible to <code>bool</code>. See the <a href=
        "#ordering">Ordering Note</a>.</td>
+
+        <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>

      <tr>
@@ -856,6 +926,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        <td><code>t &lt; t1</code>. <code>t == t1</code>.<br>
         Returns convertible to <code>bool</code>. See the <a href=
        "#ordering">Ordering Note</a>.</td>
+
+        <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>

      <tr>
@@ -874,6 +947,9 @@ const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);
        u</code>.<br>
         Returns convertible to <code>bool</code>. See the <a href=
        "#ordering">Ordering Note</a>.</td>
+
+        <td>Since <code>C++11</code><br>
+        <span style="font-size:small;">(except <a href="https://developercommunity.visualstudio.com/content/problem/414193/rejects-valid-constexpr-marked-friend-function-def.html">MSVC &lt; v19.22</a>)</span></td>
      </tr>
    </table>

@@ -1586,7 +1662,7 @@ T operator+( T lhs, const T&amp; rhs )
    <h3><a name="a_demo">Arithmetic Operators Demonstration</a> and Test
    Program</h3>

-    <p>The <cite><a href="operators_test.cpp">operators_test.cpp</a></cite>
+    <p>The <cite><a href="test/operators_test.cpp">operators_test.cpp</a></cite>
    program demonstrates the use of the arithmetic operator templates, and
    can also be used to verify correct operation. Check the compiler status
    report for the test results with selected platforms.</p>
@@ -1998,7 +2074,7 @@ struct function_output_iterator

    <h3><a name="i_demo">Iterator Demonstration</a> and Test Program</h3>

-    <p>The <cite><a href="iterators_test.cpp">iterators_test.cpp</a></cite>
+    <p>The <cite><a href="test/iterators_test.cpp">iterators_test.cpp</a></cite>
    program demonstrates the use of the iterator templates, and can also be
    used to verify correct operation. The following is the custom iterator
    defined in the test program. It demonstrates a correct (though trivial)
@@ -2064,7 +2140,7 @@ public:
      <dt><a href="http://www.boost.org/people/beman_dawes.html">Beman Dawes</a></dt>

      <dd>Contributed <cite><a href=
-      "operators_test.cpp">operators_test.cpp</a></cite>.</dd>
+      "test/operators_test.cpp">operators_test.cpp</a></cite>.</dd>

      <dt><a href="http://www.boost.org/people/daryle_walker.html">Daryle Walker</a></dt>

--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -16,10 +16,12 @@ run binary_test.cpp ;
 run call_traits_test.cpp : -u ;

 run compressed_pair_test.cpp ;
+run compressed_pair_final_test.cpp ;

 run iterators_test.cpp ;

 run operators_test.cpp ;
+compile operators_constexpr_test.cpp ;

 compile result_of_test.cpp ;

@@ -34,6 +36,8 @@ run string_view_test2.cpp ;
 run string_view_test_io.cpp ;

 run value_init_test.cpp ;
+run value_init_test2.cpp ;
+run value_init_test3.cpp ;
 run value_init_workaround_test.cpp ;
 run initialized_test.cpp ;
 compile-fail value_init_test_fail1.cpp ;
--- a/test/call_traits_test.cpp
+++ b/test/call_traits_test.cpp
@@ -376,7 +376,7 @@ void call_traits_test<T, true>::assert_construct(typename boost::call_traits<T>:
   reference r = t;
   const_reference cr = t;
   reference r2 = r;
-   #ifndef __BORLANDC__
+   #ifndef BOOST_BORLANDC
   // C++ Builder buglet:
   const_reference cr2 = r;
   #endif
@@ -393,7 +393,7 @@ void call_traits_test<T, true>::assert_construct(typename boost::call_traits<T>:
   unused_variable(v3);
   unused_variable(v4);
   unused_variable(v5);
-#ifndef __BORLANDC__
+#ifndef BOOST_BORLANDC
   unused_variable(r2);
   unused_variable(cr2);
 #endif
--- a/test/compressed_pair_final_test.cpp
+++ b/test/compressed_pair_final_test.cpp
@@ -0,0 +1,55 @@
+/*
+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_FINAL)
+#include <boost/compressed_pair.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+struct type1 {
+    operator bool() const {
+        return false;
+    }
+};
+
+struct type2 final {
+    operator bool() const {
+        return false;
+    }
+};
+
+#if !defined(BOOST_IS_FINAL)
+namespace boost {
+
+template<>
+struct is_final<type2>
+    : true_type { };
+
+} /* boost*/
+#endif
+
+template<class T1, class T2>
+void test()
+{
+    boost::compressed_pair<T1, T2> p;
+    BOOST_TEST(!p.first());
+    BOOST_TEST(!p.second());
+}
+
+int main()
+{
+    test<type1, type2>();
+    test<type2, type1>();
+    test<type2, type2>();
+    return boost::report_errors();
+}
+#else
+int main()
+{
+    return 0;
+}
+#endif
--- a/test/operators_constexpr_test.cpp
+++ b/test/operators_constexpr_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/config.hpp>
+#if !defined(BOOST_NO_CXX11_CONSTEXPR) && \
+    (!defined(BOOST_MSVC) || (BOOST_MSVC >= 1922))
+#include <boost/operators.hpp>
+#include <boost/static_assert.hpp>
+
+namespace {
+
+class Value
+    : boost::operators<Value> {
+public:
+    BOOST_OPERATORS_CONSTEXPR explicit Value(int v)
+        : v_(v) { }
+
+    BOOST_OPERATORS_CONSTEXPR bool
+    operator<(const Value& x) const {
+        return v_ < x.v_;
+    }
+
+    BOOST_OPERATORS_CONSTEXPR bool
+    operator==(const Value& x) const {
+        return v_ == x.v_;
+    }
+
+private:
+    int v_;
+};
+
+} // namespace
+
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) == Value(2)));
+BOOST_STATIC_ASSERT(Value(1) != Value(2));
+BOOST_STATIC_ASSERT(Value(1) < Value(2));
+BOOST_STATIC_ASSERT(Value(1) <= Value(2));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) > Value(2)));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) >= Value(2)));
+
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) == Value(1)));
+BOOST_STATIC_ASSERT(Value(2) != Value(1));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) < Value(1)));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) <= Value(1)));
+BOOST_STATIC_ASSERT(Value(2) >  Value(1));
+BOOST_STATIC_ASSERT(Value(2) >= Value(1));
+
+BOOST_STATIC_ASSERT(Value(1) == Value(1));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) != Value(1)));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) < Value(1)));
+BOOST_STATIC_ASSERT(Value(1) <= Value(1));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) > Value(1)));
+BOOST_STATIC_ASSERT(Value(1) >= Value(1));
+#endif
--- a/test/operators_test.cpp
+++ b/test/operators_test.cpp
@@ -50,9 +50,9 @@ namespace
        void operator!() const;

    public:
-        convertible_to_bool( const bool value ) : _value( value ) {}
+         convertible_to_bool( const bool value ) : _value( value ) {}

-        operator unspecified_bool_type() const
+         operator unspecified_bool_type() const
          { return _value ? &convertible_to_bool::_value : 0; }
    };

@@ -64,12 +64,12 @@ namespace
        , boost::shiftable<Wrapped1<T> >
    {
    public:
-        explicit Wrapped1( T v = T() ) : _value(v) {}
-        T value() const { return _value; }
+         explicit Wrapped1( T v = T() ) : _value(v) {}
+         T value() const { return _value; }

-        convertible_to_bool operator<(const Wrapped1& x) const
+         convertible_to_bool operator<(const Wrapped1& x) const
          { return _value < x._value; }
-        convertible_to_bool operator==(const Wrapped1& x) const
+         convertible_to_bool operator==(const Wrapped1& x) const
          { return _value == x._value; }
        
        Wrapped1& operator+=(const Wrapped1& x)
@@ -92,8 +92,8 @@ namespace
          { _value <<= x._value; return *this; }
        Wrapped1& operator>>=(const Wrapped1& x)
          { _value >>= x._value; return *this; }
-        Wrapped1& operator++()               { ++_value; return *this; }
-        Wrapped1& operator--()               { --_value; return *this; }
+        Wrapped1& operator++() { ++_value; return *this; }
+        Wrapped1& operator--() { --_value; return *this; }
        
    private:
        T _value;
@@ -568,6 +568,25 @@ namespace
        int v;
    };

+    // Test type designed specifically to test C++20 operator rewriting support
+    struct my_int :
+        public boost::equality_comparable2< my_int, int >
+    {
+        explicit my_int(int n) : m_n(n) {}
+
+        operator int () const
+        {
+            return m_n;
+        }
+
+        bool operator== (my_int that)
+        {
+            return that.m_n == m_n;
+        }
+
+        int m_n;
+    };
+
 } // unnamed namespace


@@ -932,5 +951,11 @@ main()

    cout << "Performed tests on MyLongInt objects.\n";

+    my_int my_n = my_int(10);
+
+    // Test if C++20 operator rewriting causes infinite recursion (https://github.com/boostorg/utility/issues/65)
+    BOOST_TEST(my_n == 10);
+    BOOST_TEST(my_n != 20);
+
    return boost::report_errors();
 }
--- a/test/string_ref_test2.cpp
+++ b/test/string_ref_test2.cpp
@@ -93,6 +93,10 @@ void find ( const char *arg ) {
    string_ref sr2;
    const char *p;

+//	When we search for the empty string, we find it at position 0
+    BOOST_TEST ( sr1.find (sr2) == 0 );
+    BOOST_TEST ( sr1.rfind(sr2) == 0 );
+
 //  Look for each character in the string(searching from the start)
    p = arg;
    sr1 = arg;
--- a/test/string_view_constexpr_test1.cpp
+++ b/test/string_view_constexpr_test1.cpp
@@ -12,6 +12,7 @@
 #include <cstddef>    // for NULL, std::size_t, std::ptrdiff_t
 #include <cstring>    // for std::strchr and std::strcmp
 #include <cstdlib>    // for std::malloc and std::free
+#include <cstdio>     // for EOF

 #include <boost/config.hpp>
 #include <boost/utility/string_view.hpp>
@@ -19,11 +20,11 @@
 #if __cplusplus >= 201402L
 struct constexpr_char_traits
 {
-    typedef char		    char_type;
-    typedef int   			int_type;
-    typedef std::streamoff	off_type;
-    typedef std::streampos	pos_type;
-    typedef std::mbstate_t	state_type;
+    typedef char            char_type;
+    typedef int             int_type;
+    typedef std::streamoff  off_type;
+    typedef std::streampos  pos_type;
+    typedef std::mbstate_t  state_type;

    static void assign(char_type& c1, const char_type& c2) noexcept { c1 = c2; }
    static constexpr bool eq(char_type c1, char_type c2) noexcept   { return c1 == c2; }
@@ -43,11 +44,11 @@ struct constexpr_char_traits
    static constexpr int_type  eof() noexcept                                 { return EOF; }
 };

-//	yields:
-//		0 if for each i in [0,n), X::eq(s1[i],s2[i]) is true; 
-//		else, a negative value if, for some j in [0,n), X::lt(s1[j],s2[j]) is true and
-//			for each i in [0,j) X::eq(s2[i],s2[i]) is true;
-//		else a positive value.
+//  yields:
+//      0 if for each i in [0,n), X::eq(s1[i],s2[i]) is true;
+//      else, a negative value if, for some j in [0,n), X::lt(s1[j],s2[j]) is true and
+//          for each i in [0,j) X::eq(s2[i],s2[i]) is true;
+//      else a positive value.
 constexpr int constexpr_char_traits::compare(const char_type* s1, const char_type* s2, size_t n) noexcept
 {
    for (; n != 0; --n, ++s1, ++s2)
@@ -77,38 +78,38 @@ int main()
    constexpr string_view sv2{"abc", 3}; // ptr, len
    constexpr string_view sv3{"def"}; 	 // ptr

-	constexpr const char *s1 = "";
-	constexpr const char *s2 = "abc";
-	
-	static_assert( (sv1 == sv1), "" );
-	
-	static_assert(!(sv1 == sv2), "" );    
-	static_assert( (sv1 != sv2), "" );    
-	static_assert( (sv1 <  sv2), "" );    
-	static_assert( (sv1 <= sv2), "" );    
-	static_assert(!(sv1 >  sv2), "" );    
-	static_assert(!(sv1 >= sv2), "" );    
+    constexpr const char *s1 = "";
+    constexpr const char *s2 = "abc";

-	static_assert(!(s1 == sv2), "" );    
-	static_assert( (s1 != sv2), "" );    
-	static_assert( (s1 <  sv2), "" );    
-	static_assert( (s1 <= sv2), "" );    
-	static_assert(!(s1 >  sv2), "" );    
-	static_assert(!(s1 >= sv2), "" );    
+    static_assert( (sv1 == sv1), "" );

-	static_assert(!(sv1 == s2), "" );    
-	static_assert( (sv1 != s2), "" );    
-	static_assert( (sv1 <  s2), "" );    
-	static_assert( (sv1 <= s2), "" );    
-	static_assert(!(sv1 >  s2), "" );    
-	static_assert(!(sv1 >= s2), "" );    
+    static_assert(!(sv1 == sv2), "" );
+    static_assert( (sv1 != sv2), "" );
+    static_assert( (sv1 <  sv2), "" );
+    static_assert( (sv1 <= sv2), "" );
+    static_assert(!(sv1 >  sv2), "" );
+    static_assert(!(sv1 >= sv2), "" );

-	static_assert( sv1.compare(sv2)  < 0, "" );    
-	static_assert( sv1.compare(sv1) == 0, "" );    
-	static_assert( sv3.compare(sv1)  > 0, "" );    
+    static_assert(!(s1 == sv2), "" );
+    static_assert( (s1 != sv2), "" );
+    static_assert( (s1 <  sv2), "" );
+    static_assert( (s1 <= sv2), "" );
+    static_assert(!(s1 >  sv2), "" );
+    static_assert(!(s1 >= sv2), "" );

-	static_assert( sv1.compare(s2)  < 0, "" );    
-	static_assert( sv1.compare(s1) == 0, "" );    
-	static_assert( sv3.compare(s1)  > 0, "" );    
+    static_assert(!(sv1 == s2), "" );
+    static_assert( (sv1 != s2), "" );
+    static_assert( (sv1 <  s2), "" );
+    static_assert( (sv1 <= s2), "" );
+    static_assert(!(sv1 >  s2), "" );
+    static_assert(!(sv1 >= s2), "" );
+
+    static_assert( sv1.compare(sv2)  < 0, "" );
+    static_assert( sv1.compare(sv1) == 0, "" );
+    static_assert( sv3.compare(sv1)  > 0, "" );
+
+    static_assert( sv1.compare(s2)  < 0, "" );
+    static_assert( sv1.compare(s1) == 0, "" );
+    static_assert( sv3.compare(s1)  > 0, "" );
 }
 #endif
--- a/test/string_view_test1.cpp
+++ b/test/string_view_test1.cpp
@@ -12,6 +12,7 @@
 #include <string>

 #include <boost/utility/string_view.hpp>
+#include <boost/container_hash/hash.hpp>

 #include <boost/core/lightweight_test.hpp>

@@ -85,6 +86,14 @@ void test_remove ( const std::string &str ) {
      }
    }

+void test_hash(const std::string& str) {
+    string_view ref = str;
+    BOOST_TEST(boost::hash_value(ref) == boost::hash_value(str));
+    boost::hash<std::string> hstr;
+    boost::hash<string_view> hsv;
+    BOOST_TEST(hsv(ref) == hstr(str));
+    }
+
 const char *test_strings [] = {
    "",
    "1",
@@ -102,6 +111,7 @@ int main()
        test_substr ( *p );
        test_remove ( *p );
        null_tests ( *p );
+        test_hash( *p );

        p++;
        }
--- a/test/string_view_test2.cpp
+++ b/test/string_view_test2.cpp
@@ -97,6 +97,10 @@ void find ( const char *arg ) {
    string_view sr2;
    const char *p;

+//	When we search for the empty string, we find it at position 0
+    BOOST_TEST ( sr1.find (sr2) == 0 );
+    BOOST_TEST ( sr1.rfind(sr2) == 0 );
+
 //  Look for each character in the string(searching from the start)
    p = arg;
    sr1 = arg;
--- a/test/value_init_test.cpp
+++ b/test/value_init_test.cpp
@@ -17,11 +17,12 @@

 #include "boost/utility/value_init.hpp"

-#ifdef __BORLANDC__
+#ifdef BOOST_BORLANDC
 #pragma hdrstop
 #endif

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

 //
 // Sample POD type
@@ -217,8 +218,8 @@ void check_initialized_value ( T const& y )
  BOOST_TEST ( y == initializedValue ) ;
 }

-#ifdef  __BORLANDC__
-#if __BORLANDC__ == 0x582
+#ifdef  BOOST_BORLANDC
+#if BOOST_BORLANDC == 0x582
 void check_initialized_value( NonPOD const& )
 {
  // The initialized_value check is skipped for Borland 5.82
--- a/test/value_init_test2.cpp
+++ b/test/value_init_test2.cpp
@@ -0,0 +1,169 @@
+// Copyright 2010, Niels Dekker.
+//
+// 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)
+//
+// Test program for the boost::value_initialized<T> workaround.
+//
+// 17 June 2010 (Created) Niels Dekker
+
+#include <boost/utility/value_init.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/config/workaround.hpp>
+#include <iostream>
+
+namespace
+{
+  struct empty_struct
+  {
+  };
+
+  // A POD aggregate struct derived from an empty struct.
+  // Similar to struct Foo1 from Microsoft Visual C++ bug report 484295,
+  // "VC++ does not value-initialize members of derived classes without 
+  // user-declared constructor", reported in 2009 by Sylvester Hesp:
+  // https://connect.microsoft.com/VisualStudio/feedback/details/484295
+  struct derived_struct: empty_struct
+  {
+    int data;
+  };
+
+  bool is_value_initialized(const derived_struct& arg)
+  {
+    return arg.data == 0;
+  }
+
+
+  class virtual_destructor_holder
+  {
+  public:
+    int i;
+    virtual ~virtual_destructor_holder()
+    {
+    }
+  };
+
+  bool is_value_initialized(const virtual_destructor_holder& arg)
+  {
+    return arg.i == 0;
+  }
+
+  // Equivalent to the Stats class from GCC Bug 33916,
+  // "Default constructor fails to initialize array members", reported in 2007 by
+  // Michael Elizabeth Chastain: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33916
+  // and fixed for GCC 4.2.4.
+  class private_int_array_pair
+  {
+    friend bool is_value_initialized(const private_int_array_pair& arg);
+  private:
+    int first[12];
+    int second[12];
+  };
+
+  bool is_value_initialized(const private_int_array_pair& arg)
+  {
+    for ( unsigned i = 0; i < 12; ++i)
+    {
+      if ( (arg.first[i] != 0) || (arg.second[i] != 0) )
+      {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  struct int_pair_struct
+  {
+    int first;
+    int second;
+  };
+
+  typedef int int_pair_struct::*ptr_to_member_type;
+
+  struct ptr_to_member_struct
+  {
+    ptr_to_member_type data;
+  };
+
+  bool is_value_initialized(const ptr_to_member_struct& arg)
+  {
+    return arg.data == 0;
+  }
+
+  template <typename T>
+  bool is_value_initialized(const T(& arg)[2])
+  {
+    return
+      is_value_initialized(arg[0]) &&
+      is_value_initialized(arg[1]);
+  }
+
+  template <typename T>
+  bool is_value_initialized(const boost::value_initialized<T>& arg)
+  {
+    return is_value_initialized(arg.data());
+  }
+
+  // Returns zero when the specified object is value-initializated, and one otherwise.
+  // Prints a message to standard output if the value-initialization has failed.
+  template <class T>
+  unsigned failed_to_value_initialized(const T& object, const char *const object_name)
+  {
+    if ( is_value_initialized(object) )
+    {
+      return 0u;
+    }
+    else
+    {
+      std::cout << "Note: Failed to value-initialize " << object_name << '.' << std::endl;
+      return 1u;
+    }
+  }
+
+// A macro that passed both the name and the value of the specified object to
+// the function above here.
+#define FAILED_TO_VALUE_INITIALIZE(value) failed_to_value_initialized(value, #value)
+
+  // Equivalent to the dirty_stack() function from GCC Bug 33916,
+  // "Default constructor fails to initialize array members", reported in 2007 by
+  // Michael Elizabeth Chastain: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33916
+  void dirty_stack()
+  {
+    unsigned char array_on_stack[4096];
+    for (unsigned i = 0; i < sizeof(array_on_stack); ++i)
+    {
+      array_on_stack[i] = 0x11;
+    }
+  }
+
+}
+
+
+int main()
+{
+#ifdef BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED
+
+  std::cout << "BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED is defined.\n\n";
+
+#endif
+
+  dirty_stack();
+
+  BOOST_TEST( is_value_initialized( boost::value_initialized<derived_struct>() ) );
+  BOOST_TEST( is_value_initialized( boost::value_initialized<virtual_destructor_holder[2]>() ) );
+  BOOST_TEST( is_value_initialized( boost::value_initialized<private_int_array_pair>() ) );
+
+#if !BOOST_WORKAROUND( BOOST_MSVC, BOOST_TESTED_AT(1925) )
+
+  // Null pointers to data members are represented as -1 in MSVC, but
+  // value initialization sets them to all zero. The workaround employed
+  // by value_initialized<> is to memset the storage to all zero, which
+  // doesn't help.
+
+  BOOST_TEST( is_value_initialized( boost::value_initialized<ptr_to_member_struct>() ) );
+
+#endif
+
+  return boost::report_errors();
+}
--- a/test/value_init_test3.cpp
+++ b/test/value_init_test3.cpp
@@ -0,0 +1,40 @@
+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/utility/value_init.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/config.hpp>
+#include <boost/config/pragma_message.hpp>
+
+#if __cplusplus >= 201103L || ( defined(BOOST_MSVC) && BOOST_MSVC >= 1900 )
+
+struct X
+{
+    int a;
+    char b;
+};
+
+struct Y: boost::value_initialized<X>
+{
+    char c = 42;
+};
+
+int main()
+{
+    Y y;
+
+    BOOST_TEST_EQ( y.data().a, 0 );
+    BOOST_TEST_EQ( y.data().b, 0 );
+    BOOST_TEST_EQ( y.c, 42 );
+
+    return boost::report_errors();
+}
+
+#else
+
+BOOST_PRAGMA_MESSAGE( "Skipping test because compiler doesn't support in-class member initializers" )
+
+int main() {}
+
+#endif
--- a/test/value_init_test_fail1.cpp
+++ b/test/value_init_test_fail1.cpp
@@ -13,7 +13,7 @@

 #include "boost/utility/value_init.hpp"

-#ifdef __BORLANDC__
+#ifdef BOOST_BORLANDC
 #pragma hdrstop
 #endif

--- a/test/value_init_test_fail2.cpp
+++ b/test/value_init_test_fail2.cpp
@@ -13,7 +13,7 @@

 #include "boost/utility/value_init.hpp"

-#ifdef __BORLANDC__
+#ifdef BOOST_BORLANDC
 #pragma hdrstop
 #endif

--- a/test/value_init_test_fail3.cpp
+++ b/test/value_init_test_fail3.cpp
@@ -13,7 +13,7 @@

 #include "boost/utility/value_init.hpp"

-#ifdef __BORLANDC__
+#ifdef BOOST_BORLANDC
 #pragma hdrstop
 #endif
Author	SHA1	Message	Date
Andrey Semashev	f3963f5375	Attempt to work around C++20 operator rewriting causinginfinite recursion. Fixes https://github.com/boostorg/utility/issues/65.	2020-11-30 01:52:44 +03:00
Peter Dimov	37168a3f4b	Use address-model=32 for msvc-9.0, 10.0, 11.0	2020-10-12 00:01:10 +03:00
Glen Fernandes	e56171989a	Merge pull request #69 from giomasce-throwaway/develop Fix copyright headers.	2020-10-11 11:48:14 -04:00
Giovanni Mascellani	f00a5bf0d3	Fix copyright headers.	2020-10-11 17:35:14 +02:00
Andrey Semashev	a4feaf4f24	Merge pull request #66 from boostorg/feature/value-init Add a new value_init test, change implementation to not depend on TypeTraits	2020-05-27 12:51:45 +03:00
Peter Dimov	688628f764	Add test/value_init_test3	2020-05-26 00:39:51 +03:00
Peter Dimov	8faf831bd1	memset data_ instead of *this	2020-05-25 23:50:35 +03:00
Peter Dimov	25cb7aa122	Use a base class to apply the memset workaround to avoid dependency on TypeTraits	2020-05-25 05:09:36 +03:00
Peter Dimov	0ae5cebc7f	Add value_init_test2.cpp, which tests the cases from value_init_workaround_test	2020-05-25 04:44:29 +03:00
Andrey Semashev	1caa002121	Added gcc 10 build jobs to Travis CI.	2020-05-22 18:46:41 +03:00
Andrey Semashev	691f3238d7	Use 20 instead of 2a to refer to C++20 in Travis CI.	2020-05-05 23:12:01 +03:00
Andrey Semashev	8b6da499a3	Added clang-10 jobs to Travis CI.	2020-05-05 23:02:58 +03:00
Glen Fernandes	6e6d0777e8	Merge pull request #64 from glenfe/develop Update to Operators constexpr support	2020-04-12 13:33:17 -04:00
Glen Fernandes	64fffa0f97	Simplify BOOST_OPERATORS_CONSTEXPR definition	2020-04-12 13:03:30 -04:00
Glen Fernandes	5da340a2a4	Rename BOOST_OPS_CONSTEXPR to BOOST_OPERATORS_CONSTEXPR	2020-04-12 13:03:22 -04:00
Glen Fernandes	9a4cff038b	Move constexpr operators test to separate test	2020-04-12 13:03:18 -04:00
Marshall Clow	0c059a50ad	Merge pull request #63 from eldiener/develop Changes for Embarcadero C++ clang-based compilers, targeting Boost 1.74. Change __BORLANDC__ to BOOST_BORLANDC, which is defined in Boost conf…	2020-04-12 09:49:06 -07:00
Daniel Frey	bdc5b5cf3a	Merge pull request #55 from tonyelewis/add-constexpr-support Add constexpr to operators (w/ basic docs, tests)	2020-04-12 13:07:24 +02:00
Glen Fernandes	86e7caefea	Update CMakeLists.txt	2020-04-11 14:14:33 -04:00
Tony Lewis	7953ba56ba	Update tests to run constexpr on newer MSVCs	2020-04-11 18:39:15 +01:00
Tony Lewis	46f72656b3	Remove constexpr from all but the comparison ops	2020-04-11 18:31:15 +01:00
Tony Lewis	e3a2a06011	Re-add constexpr support for newer MSVC versions	2020-04-11 18:30:24 +01:00
Edward Diener	a4752e066d	Change __BORLANDC__ to BOOST_BORLANDC, which is defined in Boost config for the Embarcadero non-clang-based compilers.	2020-03-24 01:39:51 -04:00
Glen Fernandes	957aeba2e9	Update Travis and Appveyor configurations	2019-12-15 10:39:10 -05:00
Glen Fernandes	2b436d7d50	Use ostream_put from Boost.IO	2019-12-15 09:46:38 -05:00
Peter Dimov	882c9c86c4	More detabification	2019-12-12 06:00:51 +02:00
Peter Dimov	c81d8e3990	Add <cstdio> for EOF; detabify, remove trailing whitespace	2019-12-12 05:57:51 +02:00
Andrey Semashev	75276a055d	Disabled all but one OS X jobs because they are slow on Travis CI.	2019-10-22 15:11:41 +03:00
Andrey Semashev	309e6a1b31	Updated CI configs, added compilers.	2019-10-22 00:52:54 +03:00
Andrey Semashev	9eeb7f85c5	Replaced tabs with spaces.	2019-06-25 15:46:36 +03:00
Daniel Frey	62c34f51f6	Avoid confusion with the spaceship operator, fixes #59	2019-04-30 18:29:28 +02:00
Glen Fernandes	6a1917ceec	Add Free Functions section heading	2019-04-29 20:12:30 -04:00
Glen Fernandes	47c9f69ffe	Correct documentation URLs and update documentation	2019-04-29 18:48:51 -04:00
Glen Fernandes	7b74d2d494	Update libraries.json and documentation	2019-04-23 15:37:57 -04:00
Marshall Clow	57da5f0c18	Merge pull request #58 from boostorg/ostream_write Refactor stream write functionality into a standalone utility	2019-04-23 03:56:04 -07:00
Glen Fernandes	dabf53a703	Refactor stream write functionality into a standalone utility	2019-04-19 09:53:29 -04:00
Marshall Clow	ff56b3649e	Merge pull request #57 from glenfe/develop Make string_view operator<< use rdbuf directly	2019-04-18 09:00:53 -07:00
Peter Dimov	31e0ae4c37	Switch Appveyor to 2015 image	2019-04-14 18:13:56 +03:00
Glen Fernandes	5fe9df91c0	Make string_view operator<< use rdbuf directly	2019-04-12 18:06:35 -04:00
Andrey Semashev	f03b681d01	Increased the number of git fetch jobs to 8 in CI.	2019-01-15 18:34:38 +03:00
Andrey Semashev	e120a83d1e	Revert "Use depinst to install dependencies in CI. Increase the number of git fetch jobs to 8." This reverts commit `424fea5881`. By request from Peter Dimov in `424fea5881 (commitcomment-31945411)`. The manual enumeration of Boost.Utility dependencies server as a detection mechanism for unwanted dependencies creep in.	2019-01-15 18:28:28 +03:00
Andrey Semashev	424fea5881	Use depinst to install dependencies in CI. Increase the number of git fetch jobs to 8.	2019-01-15 14:06:11 +03:00
Andrey Semashev	53d9aa9d2f	Use the actual number of logical CPUs for the number of CI build/test jobs.	2019-01-03 23:23:55 +03:00
Tony Lewis	6b62dcc504	Completely remove constexpr for MSVC	2018-12-24 07:02:31 +00:00
Tony Lewis	91ebdcd1dd	Remove C++14 constexpr due to MSVC/GCC problems	2018-12-22 15:52:13 +00:00
Tony Lewis	e8d2b2ba76	Add constexpr to operators (w/ basic docs, tests)	2018-12-21 10:28:22 +00:00
Andrey Semashev	ce64b13846	Added tools/boost_install and libs/headers manual checkout to CI jobs.	2018-12-18 22:14:06 +03:00
Andrey Semashev	32c50e0814	Added an experimental partial CMakeLists.txt for dependency tracking in CMake projects.	2018-12-18 19:51:11 +03:00
Andrey Semashev	05dda09fd3	Added libstdc++5 installation in the clang 7 job. Apparently, a more recent libstdc++ is needed by Boost.StringView in C++14 and later mode.	2018-11-02 12:12:15 +03:00
Andrey Semashev	a4cafcc75d	Added gcc 8 and clang 7 CI jobs.	2018-11-01 20:36:52 +03:00
Andrey Semashev	796fb965be	Merge branch 'develop'	2018-11-01 17:17:11 +03:00
Andrey Semashev	08da98a551	Added a readme file. For Boost.Utility logo thanks to Adam Wulkiewicz. The logo was taken from: https://github.com/awulkiew/boost-logos	2018-11-01 17:09:34 +03:00
Glen Fernandes	57b027f1cd	Merge branch 'develop'	2018-09-23 08:47:11 -04:00
Marshall Clow	db05c11f50	Fix string_ref::find/rfind's handling of empty strings. Thanks to 'reluctantbugreporter' for the bug report	2018-09-14 09:48:13 -07:00
Glen Fernandes	3d2a7f0c17	Merge pull request #49 from boostorg/final Avoid inheritance for final types in compressed_pair	2018-09-12 22:29:26 -04:00
Glen Fernandes	8858bad352	Merge pull request #38 from danieljames/feature/fix-links Fix some links	2018-09-11 08:35:08 -04:00
Glen Fernandes	fc135e0d72	Avoid inheritance for final types in compressed_pair	2018-09-09 17:34:22 -04:00
Peter Dimov	bdf55e0b6f	Add boilerplate reference to LICENSE_1_0.txt	2018-07-31 00:22:42 +03:00
Marshall Clow	d4170ccdb5	Merge pull request #45 from dimztimz/develop Implement boost hash for string_view	2018-05-01 07:51:36 -07:00
Dimitrij Mijoski	e2d115db97	Use hash_fwd.hpp in string_view for more lightweight dependencies.	2018-04-20 23:18:31 +02:00
Dimitrij Mijoski	15cfa44937	Boost detail is dependency of boost hash.	2018-04-20 14:07:33 +02:00
Dimitrij Mijoski	473be2e4c1	Boost integer is dependency of boost hash.	2018-04-20 13:58:12 +02:00
Dimitrij Mijoski	6ad6bc005c	Implement boost hash for string_view	2018-04-20 13:42:07 +02:00
Daniel James	d2fb06e6a0	Fix another link	2018-01-12 10:48:52 +00:00
Daniel James	73baeb7a63	Fix some links	2018-01-11 18:01:50 +00:00