polished release notes

Merge branch 'develop'
Merge branch 'citrusmoose-make_none_t_literal_type' into develop
2020-10-28 22:29:13 +01:00 · 2020-10-28 21:36:29 +01:00 · 2020-10-24 17:18:22 +02:00 · 2020-10-24 17:17:10 +02:00 · 2020-10-24 17:05:51 +02:00 · 2020-10-09 16:28:33 +02:00
96 changed files with 369 additions and 184 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -151,6 +151,7 @@ matrix:
            - llvm-toolchain-precise-3.9

    - os: linux
+      dist: trusty
      compiler: clang++-4.0
      env: TOOLSET=clang COMPILER=clang++-4.0 CXXSTD=03,11,14,1z
      addons:
@ -162,6 +163,7 @@ matrix:
            - llvm-toolchain-trusty-4.0

    - os: linux
+      dist: trusty
      compiler: clang++-5.0
      env: TOOLSET=clang COMPILER=clang++-5.0 CXXSTD=03,11,14,1z
      addons:
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -0,0 +1,28 @@
+# Copyright 2019 Mike Dev
+# 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
+#
+# NOTE: CMake support for Boost.Optional is currently experimental at best
+#       and the interface is likely to change in the future
+
+cmake_minimum_required( VERSION 3.5 )
+project( BoostOptional )
+
+add_library( boost_optional INTERFACE )
+add_library( Boost::optional ALIAS boost_optional )
+
+target_include_directories( boost_optional INTERFACE include )
+
+target_link_libraries( boost_optional
+    INTERFACE
+        Boost::assert
+        Boost::config
+        Boost::core
+        Boost::detail
+        Boost::move
+        Boost::predef
+        Boost::static_assert
+        Boost::throw_exception
+        Boost::type_traits
+        Boost::utility
+)
--- a/doc/21_ref_none.qbk
+++ b/doc/21_ref_none.qbk
@ -17,8 +17,8 @@ namespace boost {

 class none_t {/* see below */};

-const none_t none (/* see below */); 
-    
+inline constexpr none_t none (/* see below */);
+
 } // namespace boost
 ```

--- a/doc/91_relnotes.qbk
+++ b/doc/91_relnotes.qbk
@ -11,11 +11,24 @@

 [section:relnotes Release Notes]

+[heading Boost Release 1.75]
+
+* `boost::none` is `constexpr`-declared.
+
+* Fixed [@https://github.com/boostorg/optional/issues/78 issue #78].
+
+[heading Boost Release 1.73]
+
+* Fixed [@https://github.com/boostorg/optional/issues/78 issue #78].
+* `boost::none` is now declared as an inline variable (on compilers that support it): there is only one instance of `boost::none` across all translation units.
+* Fixed a number of compilation errors in GCC 4.4.7 in `optional<T>` for trivial `T`s. Thanks to Robert Leahy for the fix. For details see [@https://github.com/boostorg/optional/pull/80 pr #78].
+* Now surpressing warning `-Wweak-vtables`.
+
 [heading Boost Release 1.69]

 * Remove deprecation mark from `reset()` method (without arguments).
 * Fixed [@https://github.com/boostorg/optional/issues/59 issue #59].
-* Fixed bug with initialization of certain wrapper types in clang with -std=c++03. See [@https://github.com/boostorg/optional/pull/64 pr #64]. 
+* Fixed bug with initialization of certain wrapper types in clang with -std=c++03. See [@https://github.com/boostorg/optional/pull/64 pr #64].

 [heading Boost Release 1.68]

--- a/doc/html/boost_optional/acknowledgements.html
+++ b/doc/html/boost_optional/acknowledgements.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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@ -116,7 +116,7 @@
 </div>
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/dependencies_and_portability.html
+++ b/doc/html/boost_optional/dependencies_and_portability.html
@ -1,6 +1,6 @@
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@ -77,7 +77,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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--- a/doc/html/boost_optional/dependencies_and_portability/emplace_operations_in_older_compilers.html
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@ -1,6 +1,6 @@
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@ -76,7 +76,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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@ -1,6 +1,6 @@
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@ -93,7 +93,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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--- a/doc/html/boost_optional/quick_start.html
+++ b/doc/html/boost_optional/quick_start.html
@ -1,6 +1,6 @@
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 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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@ -155,7 +155,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/quick_start/bypassing_unnecessary_default_construction.html
+++ b/doc/html/boost_optional/quick_start/bypassing_unnecessary_default_construction.html
@ -1,6 +1,6 @@
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@ -61,7 +61,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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--- a/doc/html/boost_optional/quick_start/optional_automatic_variables.html
+++ b/doc/html/boost_optional/quick_start/optional_automatic_variables.html
@ -1,6 +1,6 @@
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@ -61,7 +61,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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--- a/doc/html/boost_optional/quick_start/optional_data_members.html
+++ b/doc/html/boost_optional/quick_start/optional_data_members.html
@ -1,6 +1,6 @@
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 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -80,7 +80,7 @@
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 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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--- a/doc/html/boost_optional/quick_start/storage_in_containers.html
+++ b/doc/html/boost_optional/quick_start/storage_in_containers.html
@ -1,6 +1,6 @@
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@ -50,7 +50,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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@ -1,6 +1,6 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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+++ b/doc/html/boost_optional/reference/header__boost_optional_bad_optional_access_hpp_/detailed_semantics.html
@ -1,6 +1,6 @@
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 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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@ -46,7 +46,7 @@
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-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
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@ -1,6 +1,6 @@
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+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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--- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___free_functions.html
+++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/detailed_semantics___free_functions.html
@ -1,6 +1,6 @@
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+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_in_place_init.html
+++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_in_place_init.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Initialization tags</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -47,7 +47,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_refs.html
+++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_refs.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Optional References</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -104,7 +104,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_values.html
+++ b/doc/html/boost_optional/reference/header__boost_optional_optional_hpp_/header_optional_optional_values.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Optional Values</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -139,7 +139,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/reference/io_header.html
+++ b/doc/html/boost_optional/reference/io_header.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Header &lt;boost/optional/optional_io.hpp&gt;</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -58,7 +58,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/reference/io_header/io_semantics.html
+++ b/doc/html/boost_optional/reference/io_header/io_semantics.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Detailed semantics</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -32,7 +32,7 @@
          <span class="special">&lt;</span><span class="keyword">class</span>
          <span class="identifier">CharType</span><span class="special">,</span>
          <span class="keyword">class</span> <span class="identifier">CharTrait</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span></code>
-          <br> &#160;&#160;&#160;&#160;<code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span></code> <br> &#160;&#160;&#160;&#160;<code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;&lt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span>
+          <br>     <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span></code> <br>     <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;&lt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span>
          <span class="identifier">out</span><span class="special">,</span>
          <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">v</span><span class="special">);</span></code>
        </p>
@ -53,8 +53,8 @@
        </p>
 <p>
          <code class="computeroutput"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">CharType</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">CharTrait</span><span class="special">,</span>
-          <span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span></code> <br> &#160;&#160;&#160;&#160;<code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span></code>
-          <br> &#160;&#160;&#160;&#160;<code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;&lt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span> <span class="identifier">out</span><span class="special">,</span> <span class="identifier">none_t</span><span class="special">);</span></code>
+          <span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span></code> <br>     <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span></code>
+          <br>     <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;&lt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span> <span class="identifier">out</span><span class="special">,</span> <span class="identifier">none_t</span><span class="special">);</span></code>
        </p>
 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 <li class="listitem">
@ -70,8 +70,8 @@
        </p>
 <p>
          <code class="computeroutput"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">CharType</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">CharTrait</span><span class="special">,</span>
-          <span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span></code> <br> &#160;&#160;&#160;&#160;<code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span></code>
-          <br> &#160;&#160;&#160;&#160;<code class="computeroutput"><span class="keyword">operator</span><span class="special">&gt;&gt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span> <span class="identifier">in</span><span class="special">,</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;&amp;</span> <span class="identifier">v</span><span class="special">);</span></code>
+          <span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span></code> <br>     <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span></code>
+          <br>     <code class="computeroutput"><span class="keyword">operator</span><span class="special">&gt;&gt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span><span class="identifier">CharType</span><span class="special">,</span> <span class="identifier">CharTrait</span><span class="special">&gt;&amp;</span> <span class="identifier">in</span><span class="special">,</span> <span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;&amp;</span> <span class="identifier">v</span><span class="special">);</span></code>
        </p>
 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 <li class="listitem">
@ -98,7 +98,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/relnotes.html
+++ b/doc/html/boost_optional/relnotes.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Release Notes</title>
 <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -28,6 +28,43 @@
 </h2></div></div></div>
 <h4>
 <a name="boost_optional.relnotes.h0"></a>
+      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_75"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_75">Boost
+      Release 1.75</a>
+    </h4>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+          <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">none</span></code> is <code class="computeroutput"><span class="keyword">constexpr</span></code>-declared.
+        </li>
+<li class="listitem">
+          Fixed <a href="https://github.com/boostorg/optional/issues/78" target="_top">issue
+          #78</a>.
+        </li>
+</ul></div>
+<h4>
+<a name="boost_optional.relnotes.h1"></a>
+      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_73"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_73">Boost
+      Release 1.73</a>
+    </h4>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+          Fixed <a href="https://github.com/boostorg/optional/issues/78" target="_top">issue
+          #78</a>.
+        </li>
+<li class="listitem">
+          <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">none</span></code> is now declared as an inline variable
+          (on compilers that support it): there is only one instance of <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">none</span></code> across all translation units.
+        </li>
+<li class="listitem">
+          Fixed a number of compilation errors in GCC 4.4.7 in <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> for trivial <code class="computeroutput"><span class="identifier">T</span></code>s.
+          Thanks to Robert Leahy for the fix. For details see <a href="https://github.com/boostorg/optional/pull/80" target="_top">pr
+          #78</a>.
+        </li>
+<li class="listitem">
+          Now surpressing warning <code class="computeroutput"><span class="special">-</span><span class="identifier">Wweak</span><span class="special">-</span><span class="identifier">vtables</span></code>.
+        </li>
+</ul></div>
+<h4>
+<a name="boost_optional.relnotes.h2"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_69"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_69">Boost
      Release 1.69</a>
    </h4>
@ -45,7 +82,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h1"></a>
+<a name="boost_optional.relnotes.h3"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_68"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_68">Boost
      Release 1.68</a>
    </h4>
@ -62,7 +99,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h2"></a>
+<a name="boost_optional.relnotes.h4"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_67"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_67">Boost
      Release 1.67</a>
    </h4>
@ -76,7 +113,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h3"></a>
+<a name="boost_optional.relnotes.h5"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_66"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_66">Boost
      Release 1.66</a>
    </h4>
@ -94,7 +131,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h4"></a>
+<a name="boost_optional.relnotes.h6"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_63"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_63">Boost
      Release 1.63</a>
    </h4>
@ -118,7 +155,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h5"></a>
+<a name="boost_optional.relnotes.h7"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_62"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_62">Boost
      Release 1.62</a>
    </h4>
@ -126,7 +163,7 @@
          Fixed <a href="https://svn.boost.org/trac/boost/ticket/12179" target="_top">Trac #12179</a>.
        </li></ul></div>
 <h4>
-<a name="boost_optional.relnotes.h6"></a>
+<a name="boost_optional.relnotes.h8"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_61"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_61">Boost
      Release 1.61</a>
    </h4>
@ -169,7 +206,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h7"></a>
+<a name="boost_optional.relnotes.h9"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_60"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_60">Boost
      Release 1.60</a>
    </h4>
@ -180,7 +217,7 @@
          #11203</a>.
        </li></ul></div>
 <h4>
-<a name="boost_optional.relnotes.h8"></a>
+<a name="boost_optional.relnotes.h10"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_59"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_59">Boost
      Release 1.59</a>
    </h4>
@ -194,7 +231,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h9"></a>
+<a name="boost_optional.relnotes.h11"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_58"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_58">Boost
      Release 1.58</a>
    </h4>
@ -230,7 +267,7 @@
        </li>
 </ul></div>
 <h4>
-<a name="boost_optional.relnotes.h10"></a>
+<a name="boost_optional.relnotes.h12"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_57"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_57">Boost
      Release 1.57</a>
    </h4>
@ -240,7 +277,7 @@
          to fix C++03 compile error on <code class="computeroutput"><span class="identifier">logic_error</span><span class="special">(</span><span class="string">"..."</span><span class="special">)</span></code>"</em></span>.
        </li></ul></div>
 <h4>
-<a name="boost_optional.relnotes.h11"></a>
+<a name="boost_optional.relnotes.h13"></a>
      <span class="phrase"><a name="boost_optional.relnotes.boost_release_1_56"></a></span><a class="link" href="relnotes.html#boost_optional.relnotes.boost_release_1_56">Boost
      Release 1.56</a>
    </h4>
@ -297,7 +334,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/design_overview.html
+++ b/doc/html/boost_optional/tutorial/design_overview.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Design Overview</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -65,8 +65,8 @@
          <code class="computeroutput"><span class="identifier">npos</span></code>, -1, etc... This is
          equivalent to adding the special value to the set of possible values of
          a given type. This super set of <code class="computeroutput"><span class="identifier">T</span></code>
-          plus some <span class="emphasis"><em>nil_t</em></span>&#8212;where <code class="computeroutput"><span class="identifier">nil_t</span></code>
-          is some stateless POD&#8212;can be modeled in modern languages as a <span class="bold"><strong>discriminated union</strong></span> of T and nil_t. Discriminated
+          plus some <span class="emphasis"><em>nil_t</em></span>—where <code class="computeroutput"><span class="identifier">nil_t</span></code>
+          is some stateless POD—can be modeled in modern languages as a <span class="bold"><strong>discriminated union</strong></span> of T and nil_t. Discriminated
          unions are often called <span class="emphasis"><em>variants</em></span>. A variant has a
          <span class="emphasis"><em>current type</em></span>, which in our case is either <code class="computeroutput"><span class="identifier">T</span></code> or <code class="computeroutput"><span class="identifier">nil_t</span></code>.
          Using the <a href="../../../../../variant/index.html" target="_top">Boost.Variant</a>
@ -100,8 +100,8 @@
        </p>
 <p>
          In any event, both the discriminated-union or the single-element container
-          models serve as a conceptual ground for a class representing optional&#8212;i.e.
-          possibly uninitialized&#8212;objects. For instance, these models show the
+          models serve as a conceptual ground for a class representing optional—i.e.
+          possibly uninitialized—objects. For instance, these models show the
          <span class="emphasis"><em>exact</em></span> semantics required for a wrapper of optional
          values:
        </p>
@ -170,7 +170,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/design_overview/the_interface.html
+++ b/doc/html/boost_optional/tutorial/design_overview/the_interface.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>The Interface</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -79,7 +79,7 @@
          facto</em></span> standard for handling optional objects because all you
          have to do to refer to a value which you don't really have is to use a
          null pointer value of the appropriate type. Pointers have been used for
-          decades&#8212;from the days of C APIs to modern C++ libraries&#8212;to <span class="emphasis"><em>refer</em></span>
+          decades—from the days of C APIs to modern C++ libraries—to <span class="emphasis"><em>refer</em></span>
          to optional (that is, possibly nonexistent) objects; particularly as optional
          arguments to a function, but also quite often as optional data members.
        </p>
@ -93,7 +93,7 @@
          and this information is tied to the <span class="emphasis"><em>syntax</em></span> of the
          expressions. That is, the presence of operators <code class="computeroutput"><span class="special">*</span></code>
          and <code class="computeroutput"><span class="special">-&gt;</span></code> tell by themselves
-          &#8212;without any additional context&#8212; that the expression will be undefined
+          —without any additional context— that the expression will be undefined
          unless the implied pointee actually exist.
        </p>
 <p>
@ -173,7 +173,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/design_overview/the_semantics.html
+++ b/doc/html/boost_optional/tutorial/design_overview/the_semantics.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>The semantics</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -107,7 +107,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/exception_safety_guarantees.html
+++ b/doc/html/boost_optional/tutorial/exception_safety_guarantees.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Exception Safety Guarantees</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -161,7 +161,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/gotchas.html
+++ b/doc/html/boost_optional/tutorial/gotchas.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Gotchas</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -37,7 +37,7 @@
        </p>
 <p>
          First, it is functionally similar to a tristate boolean (false, maybe,
-          true) &#8212;such as <a href="../../../../../../doc/html/tribool.html" target="_top">boost::tribool</a>&#8212;
+          true) —such as <a href="../../../../../../doc/html/tribool.html" target="_top">boost::tribool</a>—
          except that in a tristate boolean, the maybe state <span class="underline">represents
          a valid value</span>, unlike the corresponding state of an uninitialized
          <code class="computeroutput"><span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">bool</span><span class="special">&gt;</span></code>.
@ -98,7 +98,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/gotchas/false_positive_with__wmaybe_uninitialized.html
+++ b/doc/html/boost_optional/tutorial/gotchas/false_positive_with__wmaybe_uninitialized.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>False positive with -Wmaybe-uninitialized</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -63,7 +63,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/gotchas/mixed_relational_comparisons.html
+++ b/doc/html/boost_optional/tutorial/gotchas/mixed_relational_comparisons.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Mixed relational comparisons</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -45,7 +45,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/gotchas/moved_from__optional_.html
+++ b/doc/html/boost_optional/tutorial/gotchas/moved_from__optional_.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Moved-from optional</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -49,7 +49,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/in_place_factories.html
+++ b/doc/html/boost_optional/tutorial/in_place_factories.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>In-Place Factories</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -183,7 +183,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/io_operators.html
+++ b/doc/html/boost_optional/tutorial/io_operators.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>IO operators</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -73,7 +73,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/optional_references.html
+++ b/doc/html/boost_optional/tutorial/optional_references.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Optional references</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -103,7 +103,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/optional_references/rebinding_semantics_for_assignment_of_optional_references.html
+++ b/doc/html/boost_optional/tutorial/optional_references/rebinding_semantics_for_assignment_of_optional_references.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Rebinding semantics for assignment of optional references</title>
 <link rel="stylesheet" href="../../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -133,7 +133,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/performance_considerations.html
+++ b/doc/html/boost_optional/tutorial/performance_considerations.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Performance considerations</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -251,7 +251,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/relational_operators.html
+++ b/doc/html/boost_optional/tutorial/relational_operators.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Relational operators</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -99,7 +99,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/type_requirements.html
+++ b/doc/html/boost_optional/tutorial/type_requirements.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Type requirements</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -95,7 +95,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/boost_optional/tutorial/when_to_use_optional.html
+++ b/doc/html/boost_optional/tutorial/when_to_use_optional.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>When to use Optional</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -128,7 +128,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/index.html
+++ b/doc/html/index.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Boost.Optional</title>
 <link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -25,8 +25,8 @@
 <div><div class="author"><h3 class="author">
 <span class="firstname">Fernando Luis</span> <span class="surname">Cacciola Carballal</span>
 </h3></div></div>
-<div><p class="copyright">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal</p></div>
-<div><p class="copyright">Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski</p></div>
+<div><p class="copyright">Copyright © 2003-2007 Fernando Luis Cacciola Carballal</p></div>
+<div><p class="copyright">Copyright © 2014-2018 Andrzej Krzemieński</p></div>
 <div><div class="legalnotice">
 <a name="optional.legal"></a><p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
@ -145,7 +145,7 @@
 </div>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
-<td align="left"><p><small>Last revised: November 08, 2018 at 17:44:53 GMT</small></p></td>
+<td align="left"><p><small>Last revised: October 28, 2020 at 21:28:19 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>
--- a/doc/html/optional/reference.html
+++ b/doc/html/optional/reference.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Reference</title>
 <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -54,7 +54,7 @@

 <span class="keyword">class</span> <span class="identifier">none_t</span> <span class="special">{/*</span> <span class="identifier">see</span> <span class="identifier">below</span> <span class="special">*/};</span>

-<span class="keyword">const</span> <span class="identifier">none_t</span> <span class="identifier">none</span> <span class="special">(/*</span> <span class="identifier">see</span> <span class="identifier">below</span> <span class="special">*/);</span>
+<span class="keyword">inline</span> <span class="keyword">constexpr</span> <span class="identifier">none_t</span> <span class="identifier">none</span> <span class="special">(/*</span> <span class="identifier">see</span> <span class="identifier">below</span> <span class="special">*/);</span>

 <span class="special">}</span> <span class="comment">// namespace boost</span>
 </pre>
@ -75,7 +75,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/optional/reference/header__boost_optional_optional_hpp_.html
+++ b/doc/html/optional/reference/header__boost_optional_optional_hpp_.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Header &lt;boost/optional/optional.hpp&gt;</title>
 <link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -97,7 +97,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/doc/html/optional/tutorial.html
+++ b/doc/html/optional/tutorial.html
@ -1,6 +1,6 @@
 <html>
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Tutorial</title>
 <link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
@ -139,7 +139,7 @@
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
-<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2018 Andrzej Krzemie&#324;ski<p>
+<td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2018 Andrzej Krzemieński<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
--- a/include/boost/none.hpp
+++ b/include/boost/none.hpp
@ -13,6 +13,7 @@
 #ifndef BOOST_NONE_17SEP2003_HPP
 #define BOOST_NONE_17SEP2003_HPP

+#include "boost/config.hpp"
 #include "boost/none_t.hpp"

 // NOTE: Borland users have to include this header outside any precompiled headers
@ -23,7 +24,7 @@ namespace boost {

 #ifdef BOOST_OPTIONAL_USE_OLD_DEFINITION_OF_NONE

-none_t const none = (static_cast<none_t>(0)) ;
+BOOST_INLINE_VARIABLE none_t BOOST_CONSTEXPR_OR_CONST none = (static_cast<none_t>(0)) ;

 #elif defined BOOST_OPTIONAL_USE_SINGLETON_DEFINITION_OF_NONE

@ -35,7 +36,7 @@ namespace detail { namespace optional_detail {
  {
    static const T instance;
  };
-  
+
  template <typename T>
  const T none_instance<T>::instance = T(); // global, but because 'tis a template, no cpp file required

@ -44,16 +45,15 @@ namespace detail { namespace optional_detail {

 namespace {
  // TU-local
-  const none_t& none = detail::optional_detail::none_instance<none_t>::instance; 
+  const none_t& none = detail::optional_detail::none_instance<none_t>::instance;
 }

 #else

-const none_t none ((none_t::init_tag()));
+BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST none_t none ((none_t::init_tag()));

 #endif // older definitions

 } // namespace boost

 #endif // header guard
-
--- a/include/boost/none_t.hpp
+++ b/include/boost/none_t.hpp
@ -13,6 +13,8 @@
 #ifndef BOOST_NONE_T_17SEP2003_HPP
 #define BOOST_NONE_T_17SEP2003_HPP

+#include <boost/config.hpp>
+
 namespace boost {

 #ifdef BOOST_OPTIONAL_USE_OLD_DEFINITION_OF_NONE
@ -29,7 +31,7 @@ class none_t {};
 struct none_t
 {
  struct init_tag{};
-  explicit none_t(init_tag){} // to disable default constructor
+  explicit BOOST_CONSTEXPR none_t(init_tag){} // to disable default constructor
 };

 #endif // old implementation workarounds
--- a/include/boost/optional/bad_optional_access.hpp
+++ b/include/boost/optional/bad_optional_access.hpp
@ -19,6 +19,11 @@

 namespace boost {

+#if defined(__clang__)
+# pragma clang diagnostic push
+# pragma clang diagnostic ignored "-Wweak-vtables"
+#endif
+
 class bad_optional_access : public std::logic_error
 {
 public:
@ -27,6 +32,10 @@ public:
    {}
 };

+#if defined(__clang__)
+# pragma clang diagnostic pop
+#endif
+
 } // namespace boost

 #endif
--- a/include/boost/optional/detail/old_optional_implementation.hpp
+++ b/include/boost/optional/detail/old_optional_implementation.hpp
@ -79,7 +79,7 @@ class optional_base : public optional_tag
  private :

    typedef
-#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x564))
    BOOST_DEDUCED_TYPENAME
 #endif
    ::boost::detail::make_reference_content<T>::type internal_type ;
@ -619,7 +619,7 @@ class optional_base : public optional_tag
    reference_const_type dereference( internal_type const* p, is_reference_tag     ) const { return p->get() ; }
    reference_type       dereference( internal_type*       p, is_reference_tag     )       { return p->get() ; }

-#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x581))
+#if BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x581))
    void destroy_impl ( is_not_reference_tag ) { get_ptr_impl()->internal_type::~internal_type() ; m_initialized = false ; }
 #else
    void destroy_impl ( is_not_reference_tag ) { get_ptr_impl()->~T() ; m_initialized = false ; }
--- a/include/boost/optional/detail/optional_config.hpp
+++ b/include/boost/optional/detail/optional_config.hpp
@ -28,7 +28,7 @@
 # define BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
 #endif

-#if BOOST_WORKAROUND(__BORLANDC__, <= 0x551)
+#if BOOST_WORKAROUND(BOOST_BORLANDC, <= 0x551)
 // BCB (5.5.1) cannot parse the nested template struct in an inplace factory.
 # define BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
 #endif
--- a/include/boost/optional/detail/optional_trivially_copyable_base.hpp
+++ b/include/boost/optional/detail/optional_trivially_copyable_base.hpp
@ -359,7 +359,7 @@ class tc_optional_base : public optional_tag
    template<class Expr>
    void construct ( Expr const& factory, in_place_factory_base const* )
     {
-       boost_optional_detail::construct<value_type>(factory, m_storage.address());
+       boost_optional_detail::construct<value_type>(factory, boost::addressof(m_storage));
       m_initialized = true ;
     }

--- a/include/boost/optional/optional.hpp
+++ b/include/boost/optional/optional.hpp
@ -777,7 +777,7 @@ class optional_base : public optional_tag

 #include <boost/optional/detail/optional_trivially_copyable_base.hpp>

-// definition of metafunciton is_optional_val_init_candidate
+// definition of metafunction is_optional_val_init_candidate
 template <typename U>
 struct is_optional_related
  : boost::conditional< boost::is_base_of<optional_detail::optional_tag, BOOST_DEDUCED_TYPENAME boost::decay<U>::type>::value
@ -813,9 +813,14 @@ struct is_optional_constructible : boost::true_type

 #endif // is_convertible condition

-template <typename T, typename U>
+template <typename T, typename U, bool = is_optional_related<U>::value>
 struct is_optional_val_init_candidate
-  : boost::conditional< !is_optional_related<U>::value && is_convertible_to_T_or_factory<T, U>::value
+  : boost::false_type
+{};
+
+template <typename T, typename U>
+struct is_optional_val_init_candidate<T, U, false>
+  : boost::conditional< is_convertible_to_T_or_factory<T, U>::value
                      , boost::true_type, boost::false_type>::type
 {};

@ -967,7 +972,7 @@ class optional
    // Can throw if T::T(T&&) does

 #ifndef BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS
-    optional ( optional && rhs ) = default;
+    optional ( optional && ) = default;
 #else
    optional ( optional && rhs )
      BOOST_NOEXCEPT_IF(::boost::is_nothrow_move_constructible<T>::value)
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@ -50,6 +50,7 @@ import testing ;
    [ run optional_test_member_T.cpp ]
    [ run optional_test_tc_base.cpp ]
    [ compile optional_test_sfinae_friendly_ctor.cpp ]
+    [ compile optional_test_path_assignment.cpp ]
    [ compile-fail optional_test_fail_const_swap.cpp ]
    [ compile-fail optional_test_ref_convert_assign_const_int_prevented.cpp ]
    [ compile-fail optional_test_fail1.cpp ]
--- a/test/optional_ref_assign_test_defs.hpp
+++ b/test/optional_ref_assign_test_defs.hpp
@ -13,7 +13,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test.cpp
+++ b/test/optional_test.cpp
@ -24,7 +24,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_constructible_from_other.cpp
+++ b/test/optional_test_constructible_from_other.cpp
@ -26,12 +26,14 @@ struct size_tag {};
 template< typename T, typename U >
 struct is_constructible
 {
-    template< typename T1, typename U1 >
-    static yes_type check_helper(size_tag< sizeof(static_cast< T1 >(U1())) >*);
-    template< typename T1, typename U1 >
+    static U& get();
+
+    template< typename T1 >
+    static yes_type check_helper(size_tag< sizeof(static_cast< T1 >(get())) >*);
+    template< typename T1 >
    static no_type check_helper(...);

-    static const bool value = sizeof(check_helper< T, U >(0)) == sizeof(yes_type);
+    static const bool value = sizeof(check_helper< T >(0)) == sizeof(yes_type);
 };

 template< typename T >
--- a/test/optional_test_conversions_from_U.cpp
+++ b/test/optional_test_conversions_from_U.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_convert_from_T.cpp
+++ b/test/optional_test_convert_from_T.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_deleted_default_ctor.cpp
+++ b/test/optional_test_deleted_default_ctor.cpp
@ -1,5 +1,5 @@
 // Copyright 2017 Peter Dimov
-// Copyright 2017 Vinnie NotDefaultConstructible
+// Copyright 2017 Vinnie Falco
 // Copyright 2018 Andrzej Krzemienski
 //
 // Distributed under the Boost Software License, Version 1.0.
--- a/test/optional_test_emplace.cpp
+++ b/test/optional_test_emplace.cpp
@ -11,10 +11,11 @@

 #include "boost/optional/optional.hpp"

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

+#include <string>
 #include "boost/core/lightweight_test.hpp"
 #include "boost/none.hpp"

--- a/test/optional_test_empty_braces.cpp
+++ b/test/optional_test_empty_braces.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_equals_none.cpp
+++ b/test/optional_test_equals_none.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_experimental_traits.cpp
+++ b/test/optional_test_experimental_traits.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_flat_map.cpp
+++ b/test/optional_test_flat_map.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_inplace_factory.cpp
+++ b/test/optional_test_inplace_factory.cpp
@ -13,7 +13,7 @@
 #include<string>
 #include "boost/optional/optional.hpp"

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

@ -31,10 +31,10 @@ struct Guard
  std::string str;
  Guard() : num() {}
  Guard(double num_, std::string str_) : num(num_), str(str_) {}
-  
+
  friend bool operator==(const Guard& lhs, const Guard& rhs) { return lhs.num == rhs.num && lhs.str == rhs.str; }
  friend bool operator!=(const Guard& lhs, const Guard& rhs) { return !(lhs == rhs); }
-  
+
 private:
  Guard(const Guard&);
  Guard& operator=(const Guard&);
@ -44,26 +44,30 @@ void test_ctor()
 {
 #ifndef BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
  Guard g0, g1(1.0, "one"), g2(2.0, "two");
-  
+
  boost::optional<Guard> og0 ( boost::in_place() );
  boost::optional<Guard> og1 ( boost::in_place(1.0, "one") );
  boost::optional<Guard> og1_( boost::in_place(1.0, "one") );
  boost::optional<Guard> og2 ( boost::in_place<Guard>(2.0, "two") );
-  
+
  BOOST_TEST(og0);
  BOOST_TEST(og1);
  BOOST_TEST(og1_);
  BOOST_TEST(og2);
-  
+
  BOOST_TEST(*og0  == g0);
  BOOST_TEST(*og1  == g1);
  BOOST_TEST(*og1_ == g1);
  BOOST_TEST(*og2  == g2);
-  
+
  BOOST_TEST(og1_ == og1);
  BOOST_TEST(og1_ != og2);
  BOOST_TEST(og1_ != og0);
-#endif 
+
+  boost::optional<unsigned int> o( boost::in_place(5) );
+  BOOST_TEST(o);
+  BOOST_TEST(*o == 5);
+#endif
 }

 void test_assign()
@ -71,27 +75,32 @@ void test_assign()
 #ifndef BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT
 #ifndef BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION
  Guard g0, g1(1.0, "one"), g2(2.0, "two");
-  
+
  boost::optional<Guard> og0, og1, og1_, og2;
-  
+
  og0  = boost::in_place();
  og1  = boost::in_place(1.0, "one");
  og1_ = boost::in_place(1.0, "one");
  og2  = boost::in_place<Guard>(2.0, "two");
-  
+
  BOOST_TEST(og0);
  BOOST_TEST(og1);
  BOOST_TEST(og1_);
  BOOST_TEST(og2);
-  
+
  BOOST_TEST(*og0  == g0);
  BOOST_TEST(*og1  == g1);
  BOOST_TEST(*og1_ == g1);
  BOOST_TEST(*og2  == g2);
-  
+
  BOOST_TEST(og1_ == og1);
  BOOST_TEST(og1_ != og2);
  BOOST_TEST(og1_ != og0);
+
+  boost::optional<unsigned int> o;
+  o = boost::in_place(5);
+  BOOST_TEST(o);
+  BOOST_TEST(*o == 5);
 #endif
 #endif
 }
@ -101,4 +110,4 @@ int main()
  test_ctor();
  test_assign();
  return boost::report_errors();
-}
+}
--- a/test/optional_test_inplace_fail.cpp
+++ b/test/optional_test_inplace_fail.cpp
@ -13,7 +13,7 @@
 #include<string>
 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_inplace_fail2.cpp
+++ b/test/optional_test_inplace_fail2.cpp
@ -13,7 +13,7 @@
 #include<string>
 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_io.cpp
+++ b/test/optional_test_io.cpp
@ -14,7 +14,7 @@
 #include "boost/optional/optional.hpp"
 #include "boost/optional/optional_io.hpp"

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

--- a/test/optional_test_make_optional.cpp
+++ b/test/optional_test_make_optional.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_map.cpp
+++ b/test/optional_test_map.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_maybe_uninitialized_warning.cpp
+++ b/test/optional_test_maybe_uninitialized_warning.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_member_T.cpp
+++ b/test/optional_test_member_T.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_minimum_requirements.cpp
+++ b/test/optional_test_minimum_requirements.cpp
@ -11,10 +11,11 @@

 #include "boost/optional/optional.hpp"

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

+#include <string>
 #include "boost/core/lightweight_test.hpp"
 #include "boost/none.hpp"

--- a/test/optional_test_move.cpp
+++ b/test/optional_test_move.cpp
@ -12,7 +12,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_msvc_bug_workaround.cpp
+++ b/test/optional_test_msvc_bug_workaround.cpp
@ -12,7 +12,7 @@
 #define BOOST_OPTIONAL_CONFIG_NO_RVALUE_REFERENCES
 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_noexcept_move.cpp
+++ b/test/optional_test_noexcept_move.cpp
@ -12,7 +12,7 @@
 #include "boost/static_assert.hpp"
 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_old_impl.cpp
+++ b/test/optional_test_old_impl.cpp
@ -12,7 +12,7 @@
 #define BOOST_OPTIONAL_CONFIG_USE_OLD_IMPLEMENTATION_OF_OPTIONAL // does old implementation still work for basic usage?
 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_path_assignment.cpp
+++ b/test/optional_test_path_assignment.cpp
@ -0,0 +1,73 @@
+// Copyright (C) 2019 Andrzej Krzemienski.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/lib/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  akrzemi1@gmail.com
+
+#include "boost/optional/optional.hpp"
+
+#ifdef BOOST_BORLANDC
+#pragma hdrstop
+#endif
+
+#ifndef BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT
+#ifndef BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS
+template <typename, typename>
+struct void_t
+{
+  typedef void type;
+};
+
+
+template <typename T, typename = void>
+struct trait
+{
+};
+
+// the following trait emulates properties std::iterator_traits
+template <typename T>
+struct trait<T, BOOST_DEDUCED_TYPENAME void_t<BOOST_DEDUCED_TYPENAME T::value_type,
+                                              BOOST_DEDUCED_TYPENAME boost::enable_if<boost::is_constructible<T, T&> >::type
+                                             >::type>
+{
+  typedef BOOST_DEDUCED_TYPENAME T::value_type value_type;
+};
+
+// This class emulates the properties of std::filesystem::path
+struct Path
+{
+
+#if __cplusplus >= 201103
+    template <typename T, typename = BOOST_DEDUCED_TYPENAME trait<T>::value_type>
+        Path(T const&);
+#else
+  template <typename T>
+    Path(T const&, BOOST_DEDUCED_TYPENAME trait<T>::value_type* = 0);
+#endif
+
+};
+#endif
+#endif
+
+
+int main()
+{
+#ifndef BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT
+#ifndef BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS
+
+    boost::optional<Path> optFs1;
+    boost::optional<Path> optFs2;
+
+    optFs1 = optFs2;
+
+    // the following still fails although it shouldn't
+    //BOOST_STATIC_ASSERT((std::is_copy_constructible<boost::optional<Path>>::value));
+
+#endif
+#endif
+}
--- a/test/optional_test_ref_assign_const_int.cpp
+++ b/test/optional_test_ref_assign_const_int.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_assign_mutable_int.cpp
+++ b/test/optional_test_ref_assign_mutable_int.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_assign_portable_minimum.cpp
+++ b/test/optional_test_ref_assign_portable_minimum.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_convert_assign_const_int.cpp
+++ b/test/optional_test_ref_convert_assign_const_int.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_convert_assign_const_int_prevented.cpp
+++ b/test/optional_test_ref_convert_assign_const_int_prevented.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_convert_assign_mutable_int.cpp
+++ b/test/optional_test_ref_convert_assign_mutable_int.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_convert_assign_non_int.cpp
+++ b/test/optional_test_ref_convert_assign_non_int.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_converting_ctor.cpp
+++ b/test/optional_test_ref_converting_ctor.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

@ -93,7 +93,9 @@ template <typename T>
 void test_all_const_cases()
 {
  test_converting_ctor<T>();
+#ifndef BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT
  test_converting_ctor<const T>();
+#endif
  test_converting_ctor_for_noconst_const<T>();
 }

--- a/test/optional_test_ref_move.cpp
+++ b/test/optional_test_ref_move.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_portable_minimum.cpp
+++ b/test/optional_test_ref_portable_minimum.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_ref_to_val.cpp
+++ b/test/optional_test_ref_to_val.cpp
@ -12,7 +12,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_sfinae_friendly_ctor.cpp
+++ b/test/optional_test_sfinae_friendly_ctor.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_static_properties.cpp
+++ b/test/optional_test_static_properties.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_swap.cpp
+++ b/test/optional_test_swap.cpp
@ -17,7 +17,7 @@
 #include "boost/optional/optional.hpp"
 #include "boost/utility/in_place_factory.hpp"

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

--- a/test/optional_test_tc_base.cpp
+++ b/test/optional_test_tc_base.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_tie.cpp
+++ b/test/optional_test_tie.cpp
@ -12,7 +12,7 @@

 #include "boost/optional/optional.hpp"

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

--- a/test/optional_test_value_access.cpp
+++ b/test/optional_test_value_access.cpp
@ -11,7 +11,7 @@

 #include "boost/optional/optional.hpp"

-#ifdef __BORLANDC__
+#ifdef BOOST_BORLANDC
 #pragma hdrstop
 #endif
Author	SHA1	Message	Date
Andrzej Krzemienski	45321f321e	polished release notes	2020-10-28 22:29:13 +01:00
Andrzej Krzemienski	18222c8394	Merge branch 'develop'	2020-10-28 21:36:29 +01:00
Andrzej Krzemienski	a7f49cbec8	Merge branch 'citrusmoose-make_none_t_literal_type' into develop	2020-10-24 17:18:22 +02:00
Andrzej Krzemienski	7e0b8145b5	boost::none is constexpr-declared	2020-10-24 17:17:10 +02:00
Andrzej Krzemienski	2b08711ec6	Merge branch 'make_none_t_literal_type' of https://github.com/citrusmoose/optional into citrusmoose-make_none_t_literal_type	2020-10-24 17:05:51 +02:00
Andrzej Krzemieński	88e7d55bbc	Merge pull request #85 from giomasce-throwaway/develop Fix funny mistake in copyright headers.	2020-10-09 16:28:33 +02:00
Giovanni Mascellani	9de55e6ffd	Fix funny mistake in copyright headers.	2020-10-09 15:35:58 +02:00
Andrzej Krzemieński	409a225afe	Merge pull request #84 from mbs-c/develop Add explicit <string> include to make tests compile with MSVC	2020-08-11 16:11:59 +02:00
Moritz Baumann	db5e156ebc	Add explicit <string> include to make tests compile with MSVC	2020-08-11 10:36:12 +02:00
Andrzej Krzemienski	aeac95857e	Merge branch 'eldiener-develop' into develop	2020-05-07 18:06:07 +02:00
Edward Diener	d5b7791710	Merge branch 'develop' of https://github.com/eldiener/optional into cppbuilder	2020-04-17 05:55:24 -04:00
Andrzej Krzemienski	c486bb724c	Merge branch 'develop'	2020-04-09 01:16:14 +02:00
Andrzej Krzemienski	19b94c01f3	added release notes	2020-04-09 01:12:22 +02:00
Andrzej Krzemienski	404f40bcc1	Merge branch 'RobertLeahy-develop' into develop	2020-04-06 00:43:05 +02:00
Andrzej Krzemienski	9b1f8033eb	Merge branch 'develop' of https://github.com/RobertLeahy/optional-2 into RobertLeahy-develop	2020-04-06 00:42:05 +02:00
Andrzej Krzemienski	e52d7d4a9e	Merge branch 'Kojoley-suppress-weak-vtables-warning' into develop	2020-04-05 23:47:19 +02:00
Andrzej Krzemienski	ed9edd54e4	Merge branch 'suppress-weak-vtables-warning' of https://github.com/Kojoley/optional into Kojoley-suppress-weak-vtables-warning	2020-04-05 23:30:40 +02:00
Andrzej Krzemienski	d2479d6f52	Merge branch 'develop'	2020-04-05 22:58:03 +02:00
Edward Diener	78d6563bce	Change __BORLANDC__ to BOOST_BORLANDC, which is defined in Boost config for the Embarcadero non-clang-based compilers.	2020-03-30 14:04:35 -04:00
Andrzej Krzemienski	d4a4a5b6ad	fixed C++98-incompatible unit test	2020-01-16 22:31:23 +01:00
Robert Leahy	9581804efa	GCC 4.4.7: boost::in_place & Assignment Assigning a boost::in_place_factory to a boost::optional templated on a type which was trivially copyable failed to compile under GCC 4.4.7.	2019-12-23 11:24:39 -05:00
Robert Leahy	d07ae78901	Tests Pass in GCC 4.4.7 Several tests either did not compile or failed upon running when using GCC 4.4.7.	2019-12-23 11:24:39 -05:00
Robert Leahy	683dbe2412	.travis.yml: Specify Trusty for Trusty Addons Previously .travis.yml didn't specify dist: trusty when using addons which were specifically for Trusty. This led to the Clang 5 build failing when trying to install Clang 5.	2019-12-23 11:24:39 -05:00
Andrzej Krzemienski	010ee00604	Update release notes	2019-12-20 00:30:37 +01:00
Andrzej Krzemienski	13bc27698e	Add test case for fix to issue #78	2019-12-20 00:18:52 +01:00
Andrzej Krzemienski	0481b05d1f	Merge branch 'cxx20_fix' of https://github.com/CaseyCarter/optional into CaseyCarter-cxx20_fix	2019-12-19 20:56:34 +01:00
Andrzej Krzemienski	4c863f5bf8	Merge branch 'master' into develop	2019-12-19 20:52:53 +01:00
Andrey Semashev	9ed20cb085	Marked none instances as inline variables. This should avoid duplicating none instances in all translation units. Closes https://github.com/boostorg/optional/issues/33.	2019-12-19 20:22:16 +01:00
Casey Carter	4fbb7582e1	Don't instantiate is_convertible_to_T_or_factory when is_optional_related Fixes #78.	2019-12-18 17:51:51 -08:00
Andrzej Krzemieński	29dfc173c6	Merge pull request #71 from Mike-Devel/min_cmake [CMake] Add minimal cmake support	2019-03-04 10:43:45 +01:00
Mike Dev	f4d1107e86	[CMake] Add minimal cmake support - CMake file only supports add_subdirectory workflow. - Provides Boost::optional target, but no installation and no unit tests	2019-03-02 17:12:29 +01:00
Andrzej Krzemieński	324272fc0e	Merge pull request #70 from Kojoley/patch-1 Fix unused argument warning	2019-02-27 21:22:08 -10:00
Nikita Kniazev	ee575b34c5	Fix unused argument warning boost/optional/optional.hpp:970:5: warning: unused parameter 'rhs' [-Wunused-parameter]	2019-02-28 00:13:00 +03:00
Matt	b709447922	r #12967 use BOOST_CONSTEXPR on none_t ctor	2017-08-16 13:52:46 -04:00
Matt	cd4e44f3dc	r #12967 make none_t constructor constexpr	2017-04-13 09:13:26 -04:00
Nikita Kniazev	c3abf83426	Suppress weak vtables warning	2016-08-31 17:37:50 +03:00