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Add BOOST_NOEXCEPT and allies. Apply to Boost.Timer. Correct several Boost.timer boo boos detected while testing BOOST_NOEXCEPT.

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[SVN r74895]
This commit is contained in:
Beman Dawes
2011-10-10 14:48:39 +00:00
parent 17dcf6492b
commit 2c19eb21d6
7 changed files with 293 additions and 162 deletions
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2
doc/html/boost_config/acknowledgements.html
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@@ -27,14 +27,16 @@
<a name="boost_config.boost_macro_reference"></a><a class="link" href="boost_macro_reference.html" title="Boost Macro Reference">Boost Macro Reference</a>
</h2></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_defects">Macros
that describe defects</a></span></dt>
<dt><span class="section"><a href="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_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__0x_features">Macros
that describe possible C++0x features</a></span></dt>
<dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__0x_features_not_supported">Macros
that describe C++0x features not supported</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
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<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
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<dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.boost_helper_macros">Boost
Helper Macros</a></span></dt>
<dt><span class="section"><a href="boost_macro_reference.html#boost_config.boost_macro_reference.boost_informational_macros">Boost
@@ -44,13 +46,13 @@
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_config.boost_macro_reference.macros_that_describe_defects"></a><a name="config_defects"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_defects" title="Macros that describe defects">Macros
that describe defects</a>
<a name="boost_config.boost_macro_reference.macros_that_describe_c__03_defects"></a><a name="config_defects"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__03_defects" title="Macros that describe C++03 defects">Macros
that describe C++03 defects</a>
</h3></div></div></div>
<p>
The following macros all describe features that are required by the C++ standard,
if one of the following macros is defined, then it represents a defect in
the compiler's conformance with the standard.
The following macros all describe features that are required by the C++03
standard, if one of the following macros is defined, then it represents a
defect in the compiler's conformance with the 2003 standard.
</p>
<div class="informaltable"><table class="table">
<colgroup>
@@ -339,7 +341,6 @@
<td>
<p>
Template value parameters cannot have a dependent type, for example:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">T</span><span class="special">::</span><span class="identifier">type</span> <span class="identifier">value</span><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">X</span> <span class="special">{</span> <span class="special">...</span> <span class="special">};</span>
@@ -2235,13 +2236,12 @@
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_config.boost_macro_reference.macros_that_describe_possible_c__0x_features"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_possible_c__0x_features" title="Macros that describe possible C++0x features">Macros
that describe possible C++0x features</a>
<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 are likely to be included in
the upcoming ISO C++ standard, C++0x, but have not yet been approved for
inclusion in the language.
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>
@@ -2276,12 +2276,12 @@
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_config.boost_macro_reference.macros_that_describe_c__0x_features_not_supported"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_c__0x_features_not_supported" title="Macros that describe C++0x features not supported">Macros
that describe C++0x features not supported</a>
<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>
<p>
The following macros describe features in the upcoming ISO C++ standard,
C++0x, that are not yet supported by a particular compiler or library.
The following macros describe features in the 2011 ISO C++ standard, formerly
known as C++0x, that are not yet supported by a particular compiler or library.
</p>
<div class="informaltable"><table class="table">
<colgroup>
@@ -2877,6 +2877,155 @@
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_config.boost_macro_reference.macros_that_allow_use_of_c__11_features_with_c__03_compilers"></a><a name="config_11_for_03"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_allow_use_of_c__11_features_with_c__03_compilers" title="Macros that allow use of C++11 features with C++03 compilers">Macros
that allow use of C++11 features with C++03 compilers</a>
</h3></div></div></div>
<p>
The following macros allow use of C++11 features even with compilers that
do not yet provide compliant C++11 support.
</p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Macro
</p>
</th>
<th>
<p>
Section
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">BOOST_CONSTEXPR</span></code>
</p>
</td>
<td>
<p>
Some compilers don't support the use of <code class="computeroutput"><span class="identifier">constexpr</span></code>.
This macro expands to nothing on those compilers, and <code class="computeroutput"><span class="identifier">constexpr</span></code> elsewhere. For example,
when defining a constexpr function or constructor replace:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">constexpr</span> <span class="identifier">tuple</span><span class="special">();</span>
</pre>
<p>
with:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">BOOST_CONSTEXPR</span> <span class="identifier">tuple</span><span class="special">();</span>
</pre>
<p>
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">BOOST_CONSTEXPR_OR_CONST</span></code>
</p>
</td>
<td>
<p>
Some compilers don't support the use of <code class="computeroutput"><span class="identifier">constexpr</span></code>.
This macro expands to <code class="computeroutput"><span class="keyword">const</span></code>
on those compilers, and <code class="computeroutput"><span class="identifier">constexpr</span></code>
elsewhere. For example, when defining const expr variables replace:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">static</span> <span class="identifier">constexpr</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
with:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">static</span> <span class="identifier">BOOST_CONSTEXPR_OR_CONST</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">BOOST_STATIC_CONSTEXPR</span></code>
</p>
</td>
<td>
<p>
This is a shortcut for <code class="computeroutput"><span class="keyword">static</span>
<span class="identifier">BOOST_CONSTEXPR_OR_CONST</span></code>For
example, when defining const expr variables replace:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">static</span> <span class="identifier">constexpr</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
with:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">BOOST_STATIC_CONSTEXPR</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
</p>
</td>
</tr>
<tr>
<td>
<p>
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">BOOST_NOEXCEPT</span>
<span class="identifier">BOOST_NOEXCEPT_IF</span><span class="special">(</span><span class="identifier">Predicate</span><span class="special">)</span>
<span class="identifier">BOOST_NOEXCEPT_EXPR</span><span class="special">(</span><span class="identifier">Expression</span><span class="special">)</span>
</pre>
<p>
</p>
</td>
<td>
<p>
If <code class="computeroutput"><span class="identifier">BOOST_NO_NOEXCEPT</span></code>
is defined (i.e. C++03 compliant compilers) these macros are defined
as:
</p>
<div class="blockquote"><blockquote class="blockquote">
<p>
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="preprocessor">#define</span> <span class="identifier">BOOST_NOEXCEPT</span>
<span class="preprocessor">#define</span> <span class="identifier">BOOST_NOEXCEPT_IF</span><span class="special">(</span><span class="identifier">Predicate</span><span class="special">)</span>
<span class="preprocessor">#define</span> <span class="identifier">BOOST_NOEXCEPT_EXPR</span><span class="special">(</span><span class="identifier">Expression</span><span class="special">)</span> <span class="keyword">false</span>
</pre>
<p>
</p>
</blockquote></div>
<p>
If <code class="computeroutput"><span class="identifier">BOOST_NO_NOEXCEPT</span></code>
is not defined (i.e. C++11 compliant compilers) they are defined
as:
</p>
<div class="blockquote"><blockquote class="blockquote">
<p>
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="preprocessor">#define</span> <span class="identifier">BOOST_NOEXCEPT</span> <span class="identifier">noexcept</span>
<span class="preprocessor">#define</span> <span class="identifier">BOOST_NOEXCEPT_IF</span><span class="special">(</span><span class="identifier">Predicate</span><span class="special">)</span> <span class="identifier">noexcept</span><span class="special">((</span><span class="identifier">Predicate</span><span class="special">))</span>
<span class="preprocessor">#define</span> <span class="identifier">BOOST_NOEXCEPT_EXPR</span><span class="special">(</span><span class="identifier">Expression</span><span class="special">)</span> <span class="identifier">noexcept</span><span class="special">((</span><span class="identifier">Expression</span><span class="special">))</span>
</pre>
<p>
</p>
</blockquote></div>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_config.boost_macro_reference.boost_helper_macros"></a><a name="config_helpers"></a><a class="link" href="boost_macro_reference.html#boost_config.boost_macro_reference.boost_helper_macros" title="Boost Helper Macros">Boost
Helper Macros</a>
</h3></div></div></div>
@@ -3234,77 +3383,6 @@
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">BOOST_CONSTEXPR</span></code>
</p>
</td>
<td>
<p>
Some compilers don't support the use of <code class="computeroutput"><span class="identifier">constexpr</span></code>.
This macro expands to nothing on those compilers, and <code class="computeroutput"><span class="identifier">constexpr</span></code> elsewhere. For example,
when defining a constexpr function or constructor replace:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">constexpr</span> <span class="identifier">tuple</span><span class="special">();</span>
</pre>
<p>
with:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">BOOST_CONSTEXPR</span> <span class="identifier">tuple</span><span class="special">();</span>
</pre>
<p>
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">BOOST_CONSTEXPR_OR_CONST</span></code>
</p>
</td>
<td>
<p>
Some compilers don't support the use of <code class="computeroutput"><span class="identifier">constexpr</span></code>.
This macro expands to <code class="computeroutput"><span class="keyword">const</span></code>
on those compilers, and <code class="computeroutput"><span class="identifier">constexpr</span></code>
elsewhere. For example, when defining const expr variables replace:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">static</span> <span class="identifier">constexpr</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
with:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">static</span> <span class="identifier">BOOST_CONSTEXPR_OR_CONST</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
</p>
</td>
</tr>
<tr>
<td>
<p>
<code class="computeroutput"><span class="identifier">BOOST_STATIC_CONSTEXPR</span></code>
</p>
</td>
<td>
<p>
This is a shortcut for <code class="computeroutput"><span class="keyword">static</span>
<span class="identifier">BOOST_CONSTEXPR_OR_CONST</span></code>For
example, when defining const expr variables replace:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">static</span> <span class="identifier">constexpr</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
with:
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">BOOST_STATIC_CONSTEXPR</span> <span class="identifier">UIntType</span> <span class="identifier">xor_mask</span> <span class="special">=</span> <span class="identifier">a</span><span class="special">;</span>
</pre>
<p>
</p>
</td>
</tr>
</tbody>
</table></div>
</div>

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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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@@ -3,7 +3,7 @@
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20
doc/html/index.html
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Boost.Config</title>
<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.76.1">
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</head>
@@ -29,7 +29,7 @@
<div><p class="copyright">Copyright &#169; 2001-2007 Beman Dawes, Vesa Karvonen, John
Maddock</p></div>
<div><div class="legalnotice">
<a name="id910601"></a><p>
<a name="config.legal"></a><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>
@@ -58,14 +58,16 @@
</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.macros_that_describe_defects">Macros
that describe defects</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__0x_features">Macros
that describe possible C++0x 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__0x_features_not_supported">Macros
that describe C++0x 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_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
that allow use of C++11 features with C++03 compilers</a></span></dt>
<dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.boost_helper_macros">Boost
Helper Macros</a></span></dt>
<dt><span class="section"><a href="boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.boost_informational_macros">Boost
@@ -947,7 +949,7 @@
</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: July 13, 2011 at 18:00:55 GMT</small></p></td>
<td align="left"><p><small>Last revised: October 10, 2011 at 14:43:27 GMT</small></p></td>
<td align="right"><div class="copyright-footer"></div></td>
</tr></table>
<hr>

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@@ -16,11 +16,11 @@
[#config_defects]
[section Macros that describe defects]
[section Macros that describe C++03 defects]
The following macros all describe features that are required by the C++ standard,
The following macros all describe features that are required by the C++03 standard,
if one of the following macros is defined, then it represents a defect in the
compiler's conformance with the standard.
compiler's conformance with the 2003 standard.
[table
@@ -514,11 +514,10 @@ standard).
[endsect]
[section Macros that describe possible C++0x features]
[section Macros that describe possible C++ future features]
The following macros describe features that are likely to be included in the
upcoming ISO C++ standard, C++0x, but have not yet been approved for inclusion
in the language.
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
@@ -531,9 +530,9 @@ The compiler supports concepts.
[endsect]
[section Macros that describe C++0x features not supported]
[section Macros that describe C++11 features not supported]
The following macros describe features in the upcoming ISO C++ standard, C++0x,
The following macros describe features in the 2011 ISO C++ standard, formerly known as C++0x,
that are not yet supported by a particular compiler or library.
[table
@@ -641,6 +640,76 @@ variadic macros.
[endsect]
[#config_11_for_03]
[section Macros that allow use of C++11 features with C++03 compilers]
The following macros allow use of C++11 features even with compilers that do not yet
provide compliant C++11 support.
[table
[[Macro ][Section ][ Description ]]
[[`BOOST_CONSTEXPR`][
Some compilers don't support the use of `constexpr`. This macro expands to nothing on those compilers, and `constexpr`
elsewhere. For example, when defining a constexpr function or constructor replace:
``
constexpr tuple();
``
with:
``
BOOST_CONSTEXPR tuple();
``
]]
[[`BOOST_CONSTEXPR_OR_CONST`][
Some compilers don't support the use of `constexpr`. This macro expands to `const` on those compilers, and `constexpr`
elsewhere. For example, when defining const expr variables replace:
``
static constexpr UIntType xor_mask = a;
``
with:
``
static BOOST_CONSTEXPR_OR_CONST UIntType xor_mask = a;
``
]]
[[`BOOST_STATIC_CONSTEXPR`][
This is a shortcut for `static BOOST_CONSTEXPR_OR_CONST`For example, when defining const expr variables replace:
``
static constexpr UIntType xor_mask = a;
``
with:
``
BOOST_STATIC_CONSTEXPR UIntType xor_mask = a;
``
]]
[[
``
BOOST_NOEXCEPT
BOOST_NOEXCEPT_IF(Predicate)
BOOST_NOEXCEPT_EXPR(Expression)
``
][
If `BOOST_NO_NOEXCEPT` is defined (i.e. C++03 compliant compilers) these macros are defined as:
[:
``
#define BOOST_NOEXCEPT
#define BOOST_NOEXCEPT_IF(Predicate)
#define BOOST_NOEXCEPT_EXPR(Expression) false
``
]
If `BOOST_NO_NOEXCEPT` is not defined (i.e. C++11 compliant compilers) they are defined as:
[:
``
#define BOOST_NOEXCEPT noexcept
#define BOOST_NOEXCEPT_IF(Predicate) noexcept((Predicate))
#define BOOST_NOEXCEPT_EXPR(Expression) noexcept((Expression))
``
]
]]
]
[endsect]
[#config_helpers]
[section Boost Helper Macros]
@@ -820,38 +889,6 @@ the arguments is itself a macro (see 16.3.1 in C++ standard). This is normally
used to create a mangled name in combination with a predefined macro such a
\_\_LINE__.
]]
[[`BOOST_CONSTEXPR`][
Some compilers don't support the use of `constexpr`. This macro expands to nothing on those compilers, and `constexpr`
elsewhere. For example, when defining a constexpr function or constructor replace:
``
constexpr tuple();
``
with:
``
BOOST_CONSTEXPR tuple();
``
]]
[[`BOOST_CONSTEXPR_OR_CONST`][
Some compilers don't support the use of `constexpr`. This macro expands to `const` on those compilers, and `constexpr`
elsewhere. For example, when defining const expr variables replace:
``
static constexpr UIntType xor_mask = a;
``
with:
``
static BOOST_CONSTEXPR_OR_CONST UIntType xor_mask = a;
``
]]
[[`BOOST_STATIC_CONSTEXPR`][
This is a shortcut for `static BOOST_CONSTEXPR_OR_CONST`For example, when defining const expr variables replace:
``
static constexpr UIntType xor_mask = a;
``
with:
``
BOOST_STATIC_CONSTEXPR UIntType xor_mask = a;
``
]]
]
[endsect]

14
include/boost/config/suffix.hpp
View File

@@ -635,6 +635,20 @@ namespace std{ using ::type_info; }
#define BOOST_DO_JOIN( X, Y ) BOOST_DO_JOIN2(X,Y)
#define BOOST_DO_JOIN2( X, Y ) X##Y
//
// Helper macros BOOST_NOEXCEPT, BOOST_NOEXCEPT_IF, BOOST_NOEXCEPT_EXPR
// These aid the transition to C++11 while still supporting C++03 compilers
//
#ifdef BOOST_NO_NOEXCEPT
# define BOOST_NOEXCEPT
# define BOOST_NOEXCEPT_IF(Predicate)
# define BOOST_NOEXCEPT_EXPR(Expression) false
#else
# define BOOST_NOEXCEPT noexcept
# define BOOST_NOEXCEPT_IF(Predicate) noexcept((Predicate))
# define BOOST_NOEXCEPT_EXPR(Expression) noexcept((Expression))
#endif
//
// Set some default values for compiler/library/platform names.
// These are for debugging config setup only: