Documentation update.

[CI SKIP]

.drone.star

@@ -45,6 +45,7 @@ def main(ctx):
   linux_cxx("clang++-10 03,11,14,17,20", "clang++-10", packages="clang-10", llvm_os="xenial", llvm_ver="10", buildtype="boost", image="cppalliance/droneubuntu1804:1", environment={'TOOLSET': 'clang', 'COMPILER': 'clang++-10', 'CXXSTD': '03,11,14,17,20', }, globalenv=globalenv),
   osx_cxx("XCode-11.7 03,11,17,2a", "clang++", packages="", buildtype="boost", xcode_version="11.7", environment={'TOOLSET': 'clang', 'COMPILER': 'clang++', 'CXXSTD': '03,11,14,17,2a', }, globalenv=globalenv),
   osx_cxx("XCode-10.2 03,11,17,2a", "clang++", packages="", buildtype="boost", xcode_version="10.2", environment={'TOOLSET': 'clang', 'COMPILER': 'clang++', 'CXXSTD': '03,11,14,17,2a', }, globalenv=globalenv),
+  osx_cxx("XCode-9.4.1 03,11,14,17", "clang++", packages="", buildtype="boost", xcode_version="9.4.1", environment={'TOOLSET': 'clang', 'COMPILER': 'clang++', 'CXXSTD': '03,11,14,17', }, globalenv=globalenv),
   ]
 
 # from https://github.com/boostorg/boost-ci

doc/html/boost_config/boost_macro_reference.html

@@ -33,8 +33,6 @@
       that describe C++03 defects</a></span></dt>
 <dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_optional_features">Macros
       that describe optional features</a></span></dt>
-<dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_possible_c___future_features">Macros
-      that describe possible C++ future features</a></span></dt>
 <dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__11_features_not_supported">Macros
       that describe C++11 features not supported</a></span></dt>
 <dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_allow_use_of_c__11_features_with_c__03_compilers">Macros
@@ -2559,46 +2557,6 @@
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h3 class="title">
-<a name="boost_config.boost_macro_reference.macros_that_describe_possible_c___future_features"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_possible_c___future_features" title="Macros that describe possible C++ future features">Macros
-      that describe possible C++ future features</a>
-</h3></div></div></div>
-<p>
-        The following macros describe features that may be included in some future
-        ISO C++ standard, but have not yet been approved for inclusion in the language.
-      </p>
-<div class="informaltable"><table class="table">
-<colgroup>
-<col>
-<col>
-</colgroup>
-<thead><tr>
-<th>
-                <p>
-                  Macro
-                </p>
-              </th>
-<th>
-                <p>
-                  Description
-                </p>
-              </th>
-</tr></thead>
-<tbody><tr>
-<td>
-                <p>
-                  <code class="computeroutput"><span class="identifier">BOOST_HAS_CONCEPTS</span></code>
-                </p>
-              </td>
-<td>
-                <p>
-                  The compiler supports concepts.
-                </p>
-              </td>
-</tr></tbody>
-</table></div>
-</div>
-<div class="section">
-<div class="titlepage"><div><div><h3 class="title">
 <a name="boost_config.boost_macro_reference.macros_that_describe_c__11_features_not_supported"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__11_features_not_supported" title="Macros that describe C++11 features not supported">Macros
       that describe C++11 features not supported</a>
 </h3></div></div></div>
@@ -2650,6 +2608,19 @@
               </td>
 </tr>
 <tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">BOOST_NO_CXX11_ALIGNOF</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  The compiler does not support the <code class="computeroutput"><span class="keyword">alignof</span></code>
+                  keyword.
+                </p>
+              </td>
+</tr>
+<tr>
 <td>
                 <p>
                   <code class="computeroutput"><span class="identifier">BOOST_NO_CXX11_ALLOCATOR</span></code>
@@ -2915,7 +2886,9 @@
               </td>
 <td>
                 <p>
-                  The standard library does not provide header &lt;codecvt&gt;.
+                  The standard library does not provide header &lt;codecvt&gt;. Note
+                  that this header is deprecated post C++17, and therefore the macro
+                  may be set as a result of the feature being deliberately removed.
                 </p>
               </td>
 </tr>
@@ -3805,6 +3778,19 @@
                 </p>
               </td>
 </tr>
+<tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">BOOST_NULLPTR</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  If <code class="computeroutput"><span class="identifier">BOOST_NO_CXX11_NULLPTR</span></code>
+                  is not defined (i.e. C++11 compliant compilers), expands to <code class="computeroutput"><span class="keyword">nullptr</span></code>, otherwise expands to <code class="computeroutput"><span class="number">0</span></code>.
+                </p>
+              </td>
+</tr>
 </tbody>
 </table></div>
 </div>
@@ -4222,6 +4208,19 @@
                 </p>
               </td>
 </tr>
+<tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">BOOST_NO_CXX17_DEDUCTION_GUIDES</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  The compiler does not support class template argument deduction
+                  (CTAD) guides.
+                </p>
+              </td>
+</tr>
 </tbody>
 </table></div>
 </div>
@@ -4356,7 +4355,7 @@
               </td>
 <td>
                 <p>
-                  The compiler does not support the header <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">format</span><span class="special">&gt;</span></code>.
+                  The compiler does not support the header <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">source_location</span><span class="special">&gt;</span></code>.
                 </p>
               </td>
 </tr>
@@ -4452,7 +4451,7 @@
               </td>
 <td>
                 <p>
-                  The compiler does not support the header <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">range</span><span class="special">&gt;</span></code>.
+                  The compiler does not support the header <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">ranges</span><span class="special">&gt;</span></code>.
                 </p>
               </td>
 </tr>
@@ -4492,6 +4491,18 @@
                 </p>
               </td>
 </tr>
+<tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">BOOST_NO_CXX20_HDR_VERSION</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  The compiler does not support the header <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">version</span><span class="special">&gt;</span></code>.
+                </p>
+              </td>
+</tr>
 </tbody>
 </table></div>
 </div>
@@ -4590,6 +4601,19 @@
                 </p>
               </td>
 </tr>
+<tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">BOOST_NO_CXX11_HDR_CODECVT</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  The standard library no longer supports <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">codecvt</span><span class="special">&gt;</span></code>,
+                  there is as yet no replacement.
+                </p>
+              </td>
+</tr>
 </tbody>
 </table></div>
 </div>
@@ -4824,8 +4848,8 @@
 <span class="keyword">case</span> <span class="number">41</span><span class="special">:</span>
    <span class="keyword">if</span> <span class="special">(</span><span class="identifier">truth_is_out_there</span><span class="special">)</span> <span class="special">{</span>
       <span class="special">++</span><span class="identifier">x</span><span class="special">;</span>
-      <span class="identifier">BOOST_FALLTHROUGH</span><span class="special">;</span>  <span class="comment">// Use instead of/along with annotations in </span>
-      <span class="comment">// comments. </span>
+      <span class="identifier">BOOST_FALLTHROUGH</span><span class="special">;</span>  <span class="comment">// Use instead of/along with annotations in</span>
+      <span class="comment">// comments.</span>
    <span class="special">}</span> <span class="keyword">else</span> <span class="special">{</span>
      <span class="keyword">return</span> <span class="identifier">x</span><span class="special">;</span>
    <span class="special">}</span>
@@ -5017,14 +5041,13 @@
               </td>
 <td>
                 <p>
-                  This macro can be used in place of the compiler specific variant
+                  This macro can be used in place of the compiler-specific variant
                   of the C99 <code class="computeroutput"><span class="identifier">restrict</span></code>
                   keyword to notify the compiler that, for the lifetime of the qualified
-                  pointer variable, only it and its derivative value will be used
-                  to gain access to the object it references. This limits the effect
-                  of pointer aliasing and helps the optimizers in generating better
-                  code. However, i this condition is violated, undefined behavior
-                  may occurs.
+                  pointer variable, only it and its derivative values will be used
+                  to access the object it references. This limits the effect of pointer
+                  aliasing and helps optimizers in generating better code. However,
+                  if this condition is violated, undefined behavior may occur.
                 </p>
                 <p>
                   Usage example:
@@ -5235,6 +5258,45 @@
               </td>
 </tr>
 <tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">BOOST_DEPRECATED</span><span class="special">(</span><span class="identifier">M</span><span class="special">)</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  Expands to an attribute for a symbol that generates warnings when
+                  that symbol is used in code. The warnings may contain a message
+                  <code class="computeroutput"><span class="identifier">M</span></code>, which must be
+                  a string literal. This attribute may be applied to types, functions
+                  or objects and is typically used to mark parts of the API as deprecated
+                  with a recommendation of replacement.
+                </p>
+                <p>
+                  Example:
+</p>
+<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">BOOST_DEPRECATED</span><span class="special">(</span><span class="string">"Use bar() instead."</span><span class="special">)</span>
+<span class="keyword">void</span> <span class="identifier">foo</span><span class="special">();</span>
+
+<span class="keyword">template</span><span class="special">&lt;</span> <span class="keyword">typename</span> <span class="identifier">T</span> <span class="special">&gt;</span>
+<span class="keyword">class</span> <span class="identifier">BOOST_DEPRECATED</span><span class="special">(</span><span class="string">"Use std::unique_ptr instead."</span><span class="special">)</span> <span class="identifier">auto_ptr</span>
+<span class="special">{</span>
+<span class="special">};</span>
+
+<span class="identifier">BOOST_DEPRECATED</span><span class="special">(</span><span class="string">"Use std::numeric_limits&lt;int&gt;::max() instead."</span><span class="special">)</span>
+<span class="keyword">const</span> <span class="keyword">int</span> <span class="identifier">max_int</span> <span class="special">=</span> <span class="number">0x7fffffff</span><span class="special">;</span>
+</pre>
+<p>
+                </p>
+                <p>
+                  The warnings issued by <code class="computeroutput"><span class="identifier">BOOST_DEPRECATED</span></code>
+                  can be suppressed by defining <code class="computeroutput"><span class="identifier">BOOST_ALLOW_DEPRECATED_SYMBOLS</span></code>
+                  or <code class="computeroutput"><span class="identifier">BOOST_ALLOW_DEPRECATED</span></code>
+                  macros.
+                </p>
+              </td>
+</tr>
+<tr>
 <td>
                 <p>
                   <code class="computeroutput"><span class="identifier">BOOST_PRAGMA_MESSAGE</span><span class="special">(</span><span class="identifier">M</span><span class="special">)</span></code>
@@ -5278,7 +5340,9 @@
                 </p>
                 <p>
                   The messages issued by <code class="computeroutput"><span class="identifier">BOOST_HEADER_DEPRECATED</span></code>
-                  can be suppressed by defining the macro <code class="computeroutput"><span class="identifier">BOOST_ALLOW_DEPRECATED_HEADERS</span></code>.
+                  can be suppressed by defining <code class="computeroutput"><span class="identifier">BOOST_ALLOW_DEPRECATED_HEADERS</span></code>
+                  or <code class="computeroutput"><span class="identifier">BOOST_ALLOW_DEPRECATED</span></code>
+                  macros.
                 </p>
               </td>
 </tr>
@@ -5476,6 +5540,29 @@
               </td>
 </tr>
 <tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">BOOST_CLANG_VERSION</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">config</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  Defined to the version of the Clang compiler, usually <code class="computeroutput"><span class="identifier">__clang_major__</span> <span class="special">*</span>
+                  <span class="number">10000</span> <span class="special">+</span>
+                  <span class="identifier">__clang_minor__</span> <span class="special">*</span>
+                  <span class="number">100</span> <span class="special">+</span>
+                  <span class="identifier">__clang_patchlevel__</span></code>.
+                  On Apple Clang, has a best-effort value reflecting the upstream
+                  version, rather than the Apple version.
+                </p>
+              </td>
+</tr>
+<tr>
 <td>
                 <p>
                   <code class="computeroutput"><span class="identifier">BOOST_BORLANDC</span></code>
@@ -5568,18 +5655,22 @@
 <tr>
 <td>
                 <p>
-                  <code class="computeroutput"><span class="identifier">BOOST_NO_WREGEX</span></code>
+                  <code class="computeroutput"><span class="identifier">BOOST_MSSTL_VERSION</span></code>
                 </p>
               </td>
 <td>
                 <p>
-                  <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">regex</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
+                  <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">config</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
                 </p>
               </td>
 <td>
                 <p>
-                  Defined if the regex library does not support wide character regular
-                  expressions.
+                  Defined if the Microsoft Visual C++ standard library is in use.
+                  Has the value of <code class="computeroutput"><span class="identifier">_MSVC_STL_VERSION</span></code>
+                  when that is defined, and a synthesized value of the same format
+                  otherwise. Example values are 143 for VS2022/msvc-14.3, 142 for
+                  VS2019/msvc-14.2, 141 for VS2017/msvc-14.1, 140 for VS2015/msvc-14.0,
+                  120 for VS2013/msvc-12.0, and so on.
                 </p>
               </td>
 </tr>
@@ -6859,6 +6950,26 @@
                   </p>
                 </td>
 </tr>
+<tr>
+<td>
+                  <p>
+                    <code class="computeroutput"><span class="identifier">BOOST_DISABLE_EXPLICIT_SYMBOL_VISIBILITY</span></code>
+                  </p>
+                </td>
+<td>
+                  <p>
+                    Disables the effect of the BOOST_SYMBOL_EXPORT, BOOST_SYMBOL_IMPORT
+                    and BOOST_SYMBOL_VISIBLE macros, in order to revert to the default
+                    compiler behaviour. Note that this option should never be used
+                    if Boost libraries are being linking against dynamically, or
+                    if you are building a shared library that exposes Boost types
+                    in its public API. It is however advisable when statically-linking
+                    against Boost to prevent Boost symbols from leaking from the
+                    binary: for instance because you are building a plug-in for a
+                    software which may itself use Boost which could cause ODR conflicts.
+                  </p>
+                </td>
+</tr>
 </tbody>
 </table></div>
 <p>

doc/html/index.html

@@ -58,12 +58,12 @@
 </dl></dd>
 <dt><span class="section"><a href="boost_config/boost_macro_reference.html">Boost Macro Reference</a></span></dt>
 <dd><dl>
+<dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.broad_c___standard_level_checks">Broad
+      C++ Standard Level Checks</a></span></dt>
 <dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__03_defects">Macros
       that describe C++03 defects</a></span></dt>
 <dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_optional_features">Macros
       that describe optional features</a></span></dt>
-<dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_possible_c___future_features">Macros
-      that describe possible C++ future features</a></span></dt>
 <dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__11_features_not_supported">Macros
       that describe C++11 features not supported</a></span></dt>
 <dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_allow_use_of_c__11_features_with_c__03_compilers">Macros
@@ -992,7 +992,7 @@
 </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: March 05, 2021 at 17:51:35 GMT</small></p></td>
+<td align="left"><p><small>Last revised: February 22, 2023 at 19:02:21 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>

doc/macro_reference.qbk

@@ -630,22 +630,6 @@ standard).
 
 [endsect]
 
-[section Macros that describe possible C++ future features]
-
-The following macros describe features that may be included in some future
-ISO C++ standard, but have not yet been approved for inclusion in the language.
-
-
-[table
-[[Macro     ][Description     ]]
-
-[[`BOOST_HAS_CONCEPTS`][
-The compiler supports  concepts.
-]]
-]
-
-[endsect]
-
 [section Macros that describe C++11 features not supported]
 
 The following macros describe features in the 2011 ISO C++ standard, formerly known as C++0x,
@@ -656,6 +640,7 @@ that are not yet supported by a particular compiler or library.
 
 [[`BOOST_NO_CXX11_ADDRESSOF`][The standard library header <memory> has no working std::addressof.]]
 [[`BOOST_NO_CXX11_ALIGNAS`][The compiler does not support the `alignas` keyword.]]
+[[`BOOST_NO_CXX11_ALIGNOF`][The compiler does not support the `alignof` keyword.]]
 [[`BOOST_NO_CXX11_ALLOCATOR`][The standard library does not provide a C++11 version of `std::allocator` in <memory>.]]
 [[`BOOST_NO_CXX11_ATOMIC_SMART_PTR`][The standard library <memory> does not support atomic smart pointer operations.]]
 [[`BOOST_NO_CXX11_AUTO_DECLARATIONS`][The compiler does not support
@@ -1322,11 +1307,11 @@ used to create a mangled name in combination with a predefined macro such a
 \_\_LINE__.
 ]]
 [[`BOOST_RESTRICT`][
-This macro can be used in place of the compiler specific variant of the C99 `restrict` keyword to
+This macro can be used in place of the compiler-specific variant of the C99 `restrict` keyword to
 notify the compiler that, for the lifetime of the qualified pointer variable, only it and its
-derivative value will be used to gain access to the object it references. This limits the effect of
-pointer aliasing and helps the optimizers in generating better code. However, i this condition is
-violated, undefined behavior may occurs.
+derivative values will be used to access the object it references. This limits the effect of
+pointer aliasing and helps optimizers in generating better code. However, if this condition is
+violated, undefined behavior may occur.
 
 Usage example:
 ``
@@ -1535,9 +1520,12 @@ Defined if the Windows platform API is available.
 Defined if the dinkumware standard library is in use, takes the same value
 as the Dinkumware library version macro `_CPPLIB_VER` if defined, otherwise 1.
 ]]
-[[`BOOST_NO_WREGEX`][`<boost/regex.hpp>`][
-Defined if the regex library does not support wide character regular
-expressions.
+[[`BOOST_MSSTL_VERSION`][`<boost/config.hpp>`][
+Defined if the Microsoft Visual C++ standard library is in use.
+Has the value of `_MSVC_STL_VERSION` when that is defined, and a synthesized
+value of the same format otherwise. Example values are 143 for
+VS2022/msvc-14.3, 142 for VS2019/msvc-14.2, 141 for VS2017/msvc-14.1,
+140 for VS2015/msvc-14.0, 120 for VS2013/msvc-12.0, and so on.
 ]]
 [[`BOOST_COMPILER`][`<boost/config.hpp>`][
 Defined as a string describing the name and version number of the compiler

include/boost/config/compiler/borland.hpp

@@ -194,6 +194,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/clang.hpp

@@ -240,6 +240,10 @@
 #  define BOOST_NO_CXX11_ALIGNAS
 #endif
 
+#if !__has_feature(cxx_alignof)
+#  define BOOST_NO_CXX11_ALIGNOF
+#endif
+
 #if !__has_feature(cxx_trailing_return)
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #endif

include/boost/config/compiler/codegear.hpp

@@ -260,6 +260,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/common_edg.hpp

@@ -92,6 +92,7 @@
 #define BOOST_NO_CXX11_TEMPLATE_ALIASES
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/cray.hpp

@@ -375,6 +375,7 @@
 
 #if __cplusplus >= 201103L
 #undef  BOOST_NO_CXX11_ALIGNAS
+#undef  BOOST_NO_CXX11_ALIGNOF
 #undef  BOOST_NO_CXX11_DECLTYPE_N3276
 #define BOOST_NO_CXX11_HDR_ATOMIC
 #undef  BOOST_NO_CXX11_HDR_FUNCTIONAL

include/boost/config/compiler/digitalmars.hpp

@@ -79,6 +79,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/gcc.hpp

@@ -219,6 +219,7 @@
 #  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
 #  define BOOST_NO_CXX11_RAW_LITERALS
 #  define BOOST_NO_CXX11_UNICODE_LITERALS
+#  define BOOST_NO_CXX11_ALIGNOF
 #endif
 
 // C++0x features in 4.5.1 and later

include/boost/config/compiler/gcc_xml.hpp

@@ -57,6 +57,7 @@
 #  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #  define BOOST_NO_CXX11_INLINE_NAMESPACES
 #  define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/hp_acc.hpp

@@ -121,6 +121,7 @@
 #define BOOST_NO_CXX11_VARIADIC_TEMPLATES
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/intel.hpp

@@ -483,6 +483,7 @@ template<> struct assert_intrinsic_wchar_t<unsigned short> {};
 // BOOST_NO_CXX11_ALIGNAS
 #if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40800)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 190021730))
 #  undef BOOST_NO_CXX11_ALIGNAS
+#  undef BOOST_NO_CXX11_ALIGNOF
 #endif
 
 // BOOST_NO_CXX11_TRAILING_RESULT_TYPES

include/boost/config/compiler/metrowerks.hpp

@@ -122,6 +122,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/mpw.hpp

@@ -71,6 +71,7 @@
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
 #define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/pathscale.hpp

@@ -84,6 +84,7 @@
 #  define BOOST_NO_CXX11_HDR_CHRONO
 #  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #  define BOOST_NO_CXX11_INLINE_NAMESPACES
 #  define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/sunpro_cc.hpp

@@ -126,6 +126,7 @@
 #define BOOST_NO_CXX11_TEMPLATE_ALIASES
 #define BOOST_NO_CXX11_UNICODE_LITERALS
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_FINAL

include/boost/config/compiler/vacpp.hpp

@@ -133,6 +133,7 @@
 #  define BOOST_NO_CXX11_VARIADIC_MACROS
 #endif
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #define BOOST_NO_CXX11_INLINE_NAMESPACES
 #define BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/config/compiler/visualc.hpp

@@ -183,6 +183,7 @@
 #  define BOOST_NO_CXX11_REF_QUALIFIERS
 #  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 #  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
 #  define BOOST_NO_CXX11_INLINE_NAMESPACES
 #  define BOOST_NO_CXX11_CHAR16_T
 #  define BOOST_NO_CXX11_CHAR32_T
@@ -270,7 +271,7 @@
 #ifndef BOOST_NO_CXX11_THREAD_LOCAL
 #  define BOOST_NO_CXX11_THREAD_LOCAL
 #endif
-#ifndef BOOST_NO_SFINAE_EXPR
+#if !defined(BOOST_NO_SFINAE_EXPR) && !defined(_MSVC_LANG)
 #  define BOOST_NO_SFINAE_EXPR
 #endif
 #ifndef BOOST_NO_CXX11_REF_QUALIFIERS
@@ -364,6 +365,8 @@
 #     define BOOST_COMPILER_VERSION 14.1
 #   elif _MSC_VER < 1930
 #     define BOOST_COMPILER_VERSION 14.2
+#   elif _MSC_VER < 1940
+#     define BOOST_COMPILER_VERSION 14.3
 #   else
 #     define BOOST_COMPILER_VERSION _MSC_VER
 #   endif
@@ -375,8 +378,8 @@
 #include <boost/config/pragma_message.hpp>
 
 //
-// last known and checked version is 19.20.27508 (VC++ 2019 RC3):
-#if (_MSC_VER > 1920)
+// last known and checked version is 19.3x (VS2022):
+#if (_MSC_VER >= 1940)
 #  if defined(BOOST_ASSERT_CONFIG)
 #     error "Boost.Config is older than your current compiler version."
 #  elif !defined(BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE)

include/boost/config/compiler/xlcpp.hpp

@@ -184,6 +184,10 @@
 #  define BOOST_NO_CXX11_ALIGNAS
 #endif
 
+#if !__has_feature(cxx_alignof)
+#  define BOOST_NO_CXX11_ALIGNOF
+#endif
+
 #if !__has_feature(cxx_trailing_return)
 #  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
 #endif

include/boost/config/compiler/xlcpp_zos.hpp

@@ -142,6 +142,7 @@
 #define BOOST_NO_CXX11_FINAL
 #define BOOST_NO_CXX11_OVERRIDE
 #define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
 #define BOOST_NO_CXX11_UNRESTRICTED_UNION
 #define BOOST_NO_CXX14_VARIABLE_TEMPLATES
 #define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION

include/boost/config/detail/suffix.hpp

@@ -1048,6 +1048,9 @@ namespace std{ using ::type_info; }
 #else
 #define BOOST_CXX14_CONSTEXPR constexpr
 #endif
+#if !defined(BOOST_NO_CXX17_STRUCTURED_BINDINGS) && defined(BOOST_NO_CXX11_HDR_TUPLE)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
 
 //
 // C++17 inline variables
@@ -1071,9 +1074,22 @@ namespace std{ using ::type_info; }
 //
 // Unused variable/typedef workarounds:
 //
+#ifndef BOOST_ATTRIBUTE_UNUSED
+#  if defined(__has_attribute) && defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x5130)
+#    if __has_attribute(maybe_unused)
+#       define BOOST_ATTRIBUTE_UNUSED [[maybe_unused]]
+#    endif
+#  elif defined(__has_cpp_attribute)
+#    if __has_cpp_attribute(maybe_unused)
+#      define BOOST_ATTRIBUTE_UNUSED [[maybe_unused]]
+#    endif
+#  endif
+#endif
+
 #ifndef BOOST_ATTRIBUTE_UNUSED
 #  define BOOST_ATTRIBUTE_UNUSED
 #endif
+
 //
 // [[nodiscard]]:
 //

include/boost/config/stdlib/dinkumware.hpp

@@ -240,6 +240,8 @@
 #    define BOOST_NO_CXX98_RANDOM_SHUFFLE
 #    define BOOST_NO_CXX98_FUNCTION_BASE
 #    define BOOST_NO_CXX98_BINDERS
+#  elif defined(_HAS_DEPRECATED_ADAPTOR_TYPEDEFS) && (_HAS_DEPRECATED_ADAPTOR_TYPEDEFS == 0)
+#    define BOOST_NO_CXX98_BINDERS
 #  endif
 #endif
 //
@@ -285,6 +287,36 @@
 #  define BOOST_DINKUMWARE_STDLIB 1
 #endif
 
+// BOOST_MSSTL_VERSION: as _MSVC_STL_VERSION, but for earlier releases as well
+
+#if defined(_MSVC_STL_VERSION) // VS2017 (14.1) and above
+#  define BOOST_MSSTL_VERSION _MSVC_STL_VERSION
+
+#elif defined(_CPPLIB_VER) && _CPPLIB_VER >= 650 // VS2015 (14.0)
+#  define BOOST_MSSTL_VERSION 140
+
+#elif defined(_CPPLIB_VER) && _CPPLIB_VER >= 610 // VS2013 (12.0)
+#  define BOOST_MSSTL_VERSION 120
+
+#elif defined(_CPPLIB_VER) && _CPPLIB_VER >= 540 // VS2012 (11.0)
+#  define BOOST_MSSTL_VERSION 110
+
+#elif defined(_CPPLIB_VER) && _CPPLIB_VER >= 520 // VS2010 (10.0)
+#  define BOOST_MSSTL_VERSION 100
+
+#elif defined(_CPPLIB_VER) && _CPPLIB_VER >= 505 // VS2008SP1 (9.0)
+#  define BOOST_MSSTL_VERSION 91
+
+#elif defined(_CPPLIB_VER) && _CPPLIB_VER >= 503 // VS2008 (also 9.0)
+#  define BOOST_MSSTL_VERSION 90
+
+#elif defined(_CPPLIB_VER) && _CPPLIB_VER >= 405 // VS2005 (8.0)
+#  define BOOST_MSSTL_VERSION 80
+
+#endif
+
+//
+
 #ifdef _CPPLIB_VER
 #  define BOOST_STDLIB "Dinkumware standard library version " BOOST_STRINGIZE(_CPPLIB_VER)
 #else

include/boost/config/stdlib/libstdcpp3.hpp

@@ -139,6 +139,13 @@
 //
 #ifdef __clang__
 
+#ifdef _GLIBCXX_RELEASE
+#  define BOOST_LIBSTDCXX_VERSION (_GLIBCXX_RELEASE * 10000 + 100)
+#else
+//
+// We figure out which gcc version issued this std lib
+// by checking which headers are available:
+//
 #if __has_include(<expected>)
 #  define BOOST_LIBSTDCXX_VERSION 120100
 #elif __has_include(<source_location>)
@@ -170,6 +177,7 @@
 #elif __has_include(<array>)
 #  define BOOST_LIBSTDCXX_VERSION 40300
 #endif
+#endif
 //
 // If BOOST_HAS_FLOAT128 is set, now that we know the std lib is libstdc++3, check to see if the std lib is
 // configured to support this type.  If not disable it:
@@ -259,7 +267,7 @@ extern "C" char *gets (char *__s);
 #     if !_GLIBCXX_DEPRECATED
 #        define BOOST_NO_AUTO_PTR
 #     endif
-#  elif !_GLIBCXX_USE_DEPRECATED
+#  elif !defined(_GLIBCXX_USE_DEPRECATED) || !_GLIBCXX_USE_DEPRECATED
 #     define BOOST_NO_AUTO_PTR
 #     define BOOST_NO_CXX98_BINDERS
 #  endif
@@ -431,6 +439,13 @@ extern "C" char *gets (char *__s);
 #endif
 #endif
 
+#if defined(__clang__) && (BOOST_LIBSTDCXX_VERSION < 40300) && !defined(BOOST_NO_CXX11_NULLPTR)
+#  define BOOST_NO_CXX11_NULLPTR
+#endif
+#if defined(__clang__) && (BOOST_LIBSTDCXX_VERSION < 40300) && defined(BOOST_HAS_INT128) && defined(__APPLE_CC__)
+#undef BOOST_HAS_INT128
+#endif
+
 //
 // Headers not present on Solaris with the Oracle compiler:
 #if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x5140)

include/boost/limits.hpp

@@ -59,8 +59,8 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, is_integer = true);
       BOOST_STATIC_CONSTANT(bool, is_exact = true);
       BOOST_STATIC_CONSTANT(int, radix = 2);
-      static BOOST_LLT epsilon() throw() { return 0; };
-      static BOOST_LLT round_error() throw() { return 0; };
+      static BOOST_LLT epsilon() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT round_error() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(int, min_exponent = 0);
       BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
@@ -72,10 +72,10 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
-      static BOOST_LLT infinity() throw() { return 0; };
-      static BOOST_LLT quiet_NaN() throw() { return 0; };
-      static BOOST_LLT signaling_NaN() throw() { return 0; };
-      static BOOST_LLT denorm_min() throw() { return 0; };
+      static BOOST_LLT infinity() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT quiet_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT signaling_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT denorm_min() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
       BOOST_STATIC_CONSTANT(bool, is_bounded = true);
@@ -112,8 +112,8 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, is_integer = true);
       BOOST_STATIC_CONSTANT(bool, is_exact = true);
       BOOST_STATIC_CONSTANT(int, radix = 2);
-      static BOOST_ULLT epsilon() throw() { return 0; };
-      static BOOST_ULLT round_error() throw() { return 0; };
+      static BOOST_ULLT epsilon() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT round_error() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(int, min_exponent = 0);
       BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
@@ -125,10 +125,10 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
-      static BOOST_ULLT infinity() throw() { return 0; };
-      static BOOST_ULLT quiet_NaN() throw() { return 0; };
-      static BOOST_ULLT signaling_NaN() throw() { return 0; };
-      static BOOST_ULLT denorm_min() throw() { return 0; };
+      static BOOST_ULLT infinity() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT quiet_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT signaling_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT denorm_min() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
       BOOST_STATIC_CONSTANT(bool, is_bounded = true);

include/boost/version.hpp

@@ -19,7 +19,7 @@
 //  BOOST_VERSION / 100 % 1000 is the minor version
 //  BOOST_VERSION / 100000 is the major version
 
-#define BOOST_VERSION 108100
+#define BOOST_VERSION 108200
 
 //
 //  BOOST_LIB_VERSION must be defined to be the same as BOOST_VERSION
@@ -27,6 +27,6 @@
 //  number, y is the minor version number, and z is the patch level if not 0.
 //  This is used by <config/auto_link.hpp> to select which library version to link to.
 
-#define BOOST_LIB_VERSION "1_81"
+#define BOOST_LIB_VERSION "1_82"
 
 #endif

test/all/Jamfile.v2

@@ -193,6 +193,9 @@ test-suite "BOOST_NO_CXX11_ADDRESSOF" :
 test-suite "BOOST_NO_CXX11_ALIGNAS" : 
 [ run ../no_cxx11_alignas_pass.cpp ]
 [ compile-fail ../no_cxx11_alignas_fail.cpp ] ;
+test-suite "BOOST_NO_CXX11_ALIGNOF" : 
+[ run ../no_cxx11_alignof_pass.cpp ]
+[ compile-fail ../no_cxx11_alignof_fail.cpp ] ;
 test-suite "BOOST_NO_CXX11_ALLOCATOR" : 
 [ run ../no_cxx11_allocator_pass.cpp ]
 [ compile-fail ../no_cxx11_allocator_fail.cpp ] ;

test/boost_no_cxx11_alignof.ipp

@@ -0,0 +1,20 @@
+//  Copyright Peter Dimov 2022
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for more information.
+
+//  MACRO:         BOOST_NO_CXX11_ALIGNOF
+//  TITLE:         C++11 alignof keyword.
+//  DESCRIPTION:   The compiler does not support the C++11 alignof keyword.
+
+namespace boost_no_cxx11_alignof {
+
+int test()
+{
+    return alignof(int) == alignof(int(&)[2])? 0: 1;
+}
+
+}

test/boost_no_cxx11_hdr_type_traits.ipp

@@ -99,8 +99,11 @@ int test()
   using std::remove_all_extents;
   using std::remove_pointer;
   using std::add_pointer;
+#if !((__cplusplus > 202002L) || (defined(_MSVC_LANG) && (_MSVC_LANG > 202002L)))
+  // deprecated in C++23:
   using std::aligned_storage;
   using std::aligned_union;
+#endif
   using std::decay;
   using std::enable_if;
   using std::conditional;

test/boost_no_unified_init.ipp

@@ -34,7 +34,7 @@ struct IdString
 {
    std::string name;
    int identifier;
-   bool operator == (const IdString& other)
+   bool operator == (const IdString& other)const
    {
       return identifier == other.identifier && name == other.name;
    }

test/config_info.cpp

@@ -1089,6 +1089,7 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_NO_CXX11);
    PRINT_MACRO(BOOST_NO_CXX11_ADDRESSOF);
    PRINT_MACRO(BOOST_NO_CXX11_ALIGNAS);
+   PRINT_MACRO(BOOST_NO_CXX11_ALIGNOF);
    PRINT_MACRO(BOOST_NO_CXX11_ALLOCATOR);
    PRINT_MACRO(BOOST_NO_CXX11_ATOMIC_SMART_PTR);
    PRINT_MACRO(BOOST_NO_CXX11_AUTO_DECLARATIONS);
@@ -1277,6 +1278,7 @@ void print_boost_macros()
    PRINT_MACRO(BOOST_CLANG);
    PRINT_MACRO(BOOST_CLANG_VERSION);
    PRINT_MACRO(BOOST_LIBSTDCXX_VERSION);
+   PRINT_MACRO(BOOST_MSSTL_VERSION);
    PRINT_MACRO(BOOST_STD_EXTENSION_NAMESPACE);
    PRINT_MACRO(BOOST_UNREACHABLE_RETURN(0));
    PRINT_MACRO(BOOST_CONSTEXPR);

test/config_test.cpp

@@ -122,6 +122,11 @@ namespace boost_no_cxx11_addressof = empty_boost;
 #else
 namespace boost_no_cxx11_alignas = empty_boost;
 #endif
+#ifndef BOOST_NO_CXX11_ALIGNOF
+#include "boost_no_cxx11_alignof.ipp"
+#else
+namespace boost_no_cxx11_alignof = empty_boost;
+#endif
 #ifndef BOOST_NO_CXX11_ALLOCATOR
 #include "boost_no_cxx11_allocator.ipp"
 #else
@@ -1436,6 +1441,11 @@ int main( int, char *[] )
       std::cerr << "Failed test for BOOST_NO_CXX11_ALIGNAS at: " << __FILE__ << ":" << __LINE__ << std::endl;
       ++error_count;
    }
+   if(0 != boost_no_cxx11_alignof::test())
+   {
+      std::cerr << "Failed test for BOOST_NO_CXX11_ALIGNOF at: " << __FILE__ << ":" << __LINE__ << std::endl;
+      ++error_count;
+   }
    if(0 != boost_no_cxx11_allocator::test())
    {
       std::cerr << "Failed test for BOOST_NO_CXX11_ALLOCATOR at: " << __FILE__ << ":" << __LINE__ << std::endl;

test/no_cxx11_alignof_fail.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Sun Apr 28 18:36:48 2013
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX11_ALIGNOF
+// This file should not compile, if it does then
+// BOOST_NO_CXX11_ALIGNOF should not be defined.
+// See file boost_no_cxx11_alignof.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifdef BOOST_NO_CXX11_ALIGNOF
+#include "boost_no_cxx11_alignof.ipp"
+#else
+#error "this file should not compile"
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx11_alignof::test();
+}
+

test/no_cxx11_alignof_pass.cpp

@@ -0,0 +1,37 @@
+//  This file was automatically generated on Sun Apr 28 18:36:48 2013
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+
+// Test file for macro BOOST_NO_CXX11_ALIGNOF
+// This file should compile, if it does not then
+// BOOST_NO_CXX11_ALIGNOF should be defined.
+// See file boost_no_cxx11_alignof.ipp for details
+
+// Must not have BOOST_ASSERT_CONFIG set; it defeats
+// the objective of this file:
+#ifdef BOOST_ASSERT_CONFIG
+#  undef BOOST_ASSERT_CONFIG
+#endif
+
+#include <boost/config.hpp>
+#include "test.hpp"
+
+#ifndef BOOST_NO_CXX11_ALIGNOF
+#include "boost_no_cxx11_alignof.ipp"
+#else
+namespace boost_no_cxx11_alignof = empty_boost;
+#endif
+
+int main( int, char *[] )
+{
+   return boost_no_cxx11_alignof::test();
+}
+