On 22/04/20 22:57 +0100, Jonathan Wakely wrote:
This series of patches fixes a number of omissions and errors in the
feature test macros we define.
Tested powerpc64le-linux, committed to master.
Jonathan Wakely (8):
libstdc++: Update value of __cpp_lib_jthread macro
libstdc++: Remove non-standard feature test macros
libstdc++: Add missing feature test macros
libstdc++: Rename __cpp_lib_constexpr_invoke macro
libstdc++: Update __cpp_lib_concepts value
libstdc++: Do not define __cpp_lib_constexpr_algorithms in <utility>
libstdc++: Update (and revert) value of __cpp_lib_array_constexpr
libstdc++: Define __cpp_lib_execution feature test macro
I've backported some of these changes (and other ones related to
feature test macros) to the gcc-9 branch. This means both master and
gcc-9 should define exactly the feature test macros for the features
they support.
With that done, I've also updated the C++20 status table in the docs
(only for master so far, but I'll do it for gcc-9 too).
The attached doc patch has been committed to master.
commit be0363c80f7ac93f1dbd00da6beb9ce0eed96d9d
Author: Jonathan Wakely <jwak...@redhat.com>
Date: Thu Apr 23 21:39:33 2020 +0100
libstdc++: Update C++20 library status docs
This reorganises the C++20 status table, grouping the proposals by
category. It also adds more proposals, and documents all the feature
test macros for C++20 library changes.
* doc/xml/manual/status_cxx2020.xml: Update C++20 status table.
* doc/html/*: Regenerate.
diff --git a/libstdc++-v3/doc/xml/manual/status_cxx2020.xml b/libstdc++-v3/doc/xml/manual/status_cxx2020.xml
index 17f28887119..ade77cbb80b 100644
--- a/libstdc++-v3/doc/xml/manual/status_cxx2020.xml
+++ b/libstdc++-v3/doc/xml/manual/status_cxx2020.xml
@@ -1,8 +1,8 @@
-<section xmlns="http://docbook.org/ns/docbook"; version="5.0"
- xml:id="status.iso.2020" xreflabel="Status C++ 2020">
+<section xmlns="http://docbook.org/ns/docbook"; version="5.0"
+ xml:id="status.iso.2020" xreflabel="Status C++ 2020">
<?dbhtml filename="status_iso_cxx2020.html"?>
-<info><title>C++ 202a</title>
+<info><title>C++ 2020</title>
<keywordset>
<keyword>ISO C++</keyword>
<keyword>2020</keyword>
@@ -26,17 +26,20 @@ not in any particular release.
<para>
The following table lists new library features that have been accepted into
-the C++2a working draft. The "Proposal" column provides a link to the
+the C++20 working draft. The "Proposal" column provides a link to the
ISO C++ committee proposal that describes the feature, while the "Status"
column indicates the first version of GCC that contains an implementation of
this feature (if it has been implemented).
-The "SD-6 Feature Test" column shows the corresponding macro or header from
+A dash (—) in the status column indicates that the changes in the proposal
+either do not affect the code in libstdc++, or the changes are not required for conformance.
+The "SD-6 Feature Test / Notes" column shows the corresponding macro or header from
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations";>SD-6:
-Feature-testing recommendations for C++</link>.
+Feature-testing recommendations for C++</link> (where applicable)
+or any notes about the implementation.
</para>
-<table frame="all" xml:id="table.cxx20_status">
-<title>C++ 2020 Implementation Status</title>
+<table frame="all" xml:id="table.cxx20_features">
+<title>C++ 2020 Library Features</title>
<tgroup cols="4" align="left" colsep="0" rowsep="1">
<colspec colname="c1"/>
@@ -48,44 +51,309 @@ Feature-testing recommendations for C++</link>.
<entry>Library Feature</entry>
<entry>Proposal</entry>
<entry>Status</entry>
- <entry>SD-6 Feature Test</entry>
+ <entry>SD-6 Feature Test / Notes</entry>
</row>
</thead>
<tbody>
<row>
- <entry> Endian just Endian </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0463r1.html";>
- P0463R1
- </link>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Compile-time programming</emphasis>
</entry>
- <entry align="center"> 8.1 </entry>
- <entry />
+ </row>
+
+ <row>
+ <entry> Add constexpr modifiers to functions in <code><algorithm></code> and <code><utility></code> Headers </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0202r3.html";>
+ P0202R3 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_constexpr_algorithms >= 201703L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Constexpr for <code>swap</code> and swap related functions </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0879r0.html";>
+ P0879R0 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_constexpr_algorithms >= 201806L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Constexpr for <code>std::complex</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0415r1.html";>
+ P0415R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_constexpr_complex >= 201711L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <entry> P0595R2 <code>std::is_constant_evaluated()</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0595r2.html";>
+ P0595R2 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_is_constant_evaluated >= 201811L</code> </entry>
+ </row>
+
+ <row>
+ <entry> More constexpr containers </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0784r7.html";>
+ P0784R7 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_constexpr_dynamic_alloc >= 201907L</code> </entry>
</row>
<row>
<?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Extending <code>make_shared</code> to Support Arrays </entry>
+ <entry> Making <code>std::string</code> constexpr </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0674r1.html";>
- P0674R1
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0980r1.pdf";>
+ P0980R1 </link>
+ </entry>
+ <entry/>
+ <entry> <code>__cpp_lib_constexpr_string >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Making <code>std::vector</code> constexpr </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1004r2.pdf";>
+ P1004R2 </link>
+ </entry>
+ <entry/>
+ <entry> <code>__cpp_lib_constexpr_vector >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Constexpr in <code>std::pointer_traits</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1006r1.pdf";>
+ P1006R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_constexpr_memory >= 201811L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <entry> constexpr for <code><numeric></code> algorithms </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1645r1.html";>
+ P1645R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_constexpr_numeric >= 201911L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Constexpr iterator requirements </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0858r0.html";>
+ P0858R0 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry>
+ <informaltable colsep="0" rowsep="0" rowheader="norowheader" frame="none"><tgroup cols="1"><tbody>
+ <row><entry> <code>__cpp_lib_array_constexpr >= 201803L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_string_view >= 201803L</code> </entry></row>
+ <row><entry> (both since 9.4, see Note 1) </entry></row>
+ </tbody></tgroup></informaltable>
+ </entry>
+ </row>
+
+ <row>
+ <entry> <code>constexpr</code> comparison operators for <code>std::array</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1023r0.pdf";>
+ P1023R0 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_array_constexpr >= 201806</code> </entry>
+ </row>
+
+ <row>
+ <entry> Misc constexpr bits </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1032r1.html";>
+ P1032R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry>
+ <informaltable colsep="0" rowsep="0" rowheader="norowheader" frame="none"><tgroup cols="1"><tbody>
+ <row><entry> <code>__cpp_lib_array_constexpr >= 201811L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_constexpr_functional >= 201811L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_constexpr_iterator >= 201811L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_constexpr_string_view >= 201811L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_constexpr_tuple >= 201811L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_constexpr_utility >= 201811L</code> </entry></row>
+ </tbody></tgroup></informaltable>
+ </entry>
+ </row>
+
+ <row>
+ <entry> <code>constexpr <emphasis>INVOKE</emphasis></code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1065r2.html";>
+ P1065R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_constexpr_functional >= 201907L</code> </entry>
+ </row>
+
+
+ <row>
+ <entry> Transformation Trait <code>remove_cvref</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0550r2.pdf";>
+ P0550R2 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_remove_cvref >= 201711L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <entry> Implicit conversion traits and utility functions </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0758r1.html";>
+ P0758R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_is_nothrow_convertible >= 201806L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <entry> The <code>identity</code> metafunction </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0887r1.pdf";>
+ P0887R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_type_identity >= 201806L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+
+ <row>
+ <entry> <code>unwrap_ref_decay</code> and <code>unwrap_reference</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0318r1.pdf";>
+ P0318R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_unwrap_ref >= 201811L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#B0B0B0" ?>
+ <entry> Improving Completeness Requirements for Type Traits </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1285r0.pdf";>
+ P1285R0 </link>
+ </entry>
+ <entry align="center"> Partial </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Missing feature test macros </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1353r0.html";>
+ P1353R0 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Making std::underlying_type SFINAE-friendly </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0340r3.html";>
+ P0340R3 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Traits for [Un]bounded Arrays </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1357r1.pdf";>
+ P1357R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_bounded_array_traits >= 201902L</code> </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Layout-compatibility and pointer-interconvertibility traits </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0466r5.pdf";>
+ P0466R5 </link>
</entry>
<entry align="center"> </entry>
+ <entry>
+ <informaltable colsep="0" rowsep="0" rowheader="norowheader" frame="none"><tgroup cols="1"><tbody>
+ <row><entry> <code>__cpp_lib_is_layout_compatible >= 201907L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_is_pointer_interconvertible >= 201907L</code> </entry></row>
+ </tbody></tgroup></informaltable>
+ </entry>
+ </row>
+
+ <row>
+ <entry> Integrating feature-test macros into the C++ WD </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0941r2.html";>
+ P0941R2 </link>
+ </entry>
+ <entry align="center"> 5.1 </entry>
<entry />
</row>
+ <row>
+ <entry> <code><version></code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0754r2.pdf";>
+ P0754R2 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__has_include(<version>)</code> </entry>
+ </row>
+
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Synchronization</emphasis>
+ </entry>
+ </row>
+
+ <row>
+ <entry> Atomic Ref </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0019r8.html";>
+ P0019R8 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_atomic_ref >= 201806L</code> </entry>
+ </row>
+
<row>
<entry> Floating Point Atomic </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0020r6.html";>
- P0020R6
- </link>
+ P0020R6 </link>
</entry>
<entry align="center"> 10.1 </entry>
- <entry />
+ <entry> <code>__cpp_lib_atomic_float >= 201711L</code> </entry>
</row>
<row>
@@ -93,98 +361,41 @@ Feature-testing recommendations for C++</link>.
<entry> C++ Synchronized Buffered Ostream </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0053r7.pdf";>
- P0053R7
- </link>
+ P0053R7 </link>
</entry>
<entry align="center"> </entry>
- <entry />
+ <entry> <code>__cpp_lib_syncbuf >= 201711L</code> </entry>
</row>
<row>
- <entry> Add constexpr modifiers to functions in <code><algorithm></code> and <code><utility></code> Headers </entry>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Manipulators for C++ Synchronized Buffered Ostream </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0202r3.html";>
- P0202R3
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0753r2.pdf";>
+ P0753R2 </link>
</entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_constexpr_algorithms >= 201703L</code> </entry>
- </row>
-
- <row>
- <entry> Constexpr for <code>std::complex</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0415r1.html";>
- P0415R1
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
+ <entry align="center"> </entry>
+ <entry> <code>__cpp_lib_syncbuf >= 201803L</code> </entry>
</row>
<row>
<entry> Make <code>std::memory_order</code> a scoped enumeration </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0439r0.html";>
- P0439R0
- </link>
+ P0439R0 </link>
</entry>
<entry align="center"> 9.1 </entry>
<entry />
</row>
<row>
- <entry> String Prefix and Suffix Checking </entry>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> The Curious Case of Padding Bits, Featuring Atomic Compare-and-Exchange </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0457r2.html";>
- P0457R2
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0528r3.html";>
+ P0528R3 </link>
</entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Transformation Trait <code>remove_cvref</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0550r2.pdf";>
- P0550R2
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code>nodiscard</code> in the Library </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0600r1.pdf";>
- P0600R1
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> de-pessimize legacy algorithms with <code>std::move</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0616r0.pdf";>
- P0616R0
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Utility to convert a pointer to a raw pointer </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r2.html";>
- P0653R2
- </link>
- </entry>
- <entry align="center"> 8.1 </entry>
+ <entry align="center"> </entry>
<entry />
</row>
@@ -193,57 +404,156 @@ Feature-testing recommendations for C++</link>.
<entry> Atomic <code>shared_ptr</code> </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0718r2.html";>
- P0718R2
- </link>
+ P0718R2 </link>
</entry>
<entry align="center"> </entry>
- <entry />
+ <entry> <code> __cpp_lib_atomic_shared_ptr >= 201711L</code> </entry>
</row>
<row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Deprecate POD </entry>
+ <entry> std::stop_token and std::jthread </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0767r1.html";>
- P0767R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Library Support for the Spaceship (Comparison) Operator </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0768r1.pdf";>
- P0768R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> Treating Unnecessary <code>decay</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0777r1.pdf";>
- P0777R1
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code><span></code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0122r7.pdf";>
- P0122R7
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0660r10.pdf";>
+ P0660R10 </link>
</entry>
<entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_span >= 201803L</code> </entry>
+ <entry> <code>__cpp_lib_jthread >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Rename <code>condition_variable_any</code> interruptible wait methods </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1869r1.html";>
+ P1869R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_jthread >= 201911L</code> </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Atomic waiting and notifying, std::semaphore, std::latch and std::barrier </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1135r6.html";>
+ P1135R6 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry>
+ <informaltable colsep="0" rowsep="0" rowheader="norowheader" frame="none"><tgroup cols="1"><tbody>
+ <row><entry> <code>__cpp_lib_atomic_lock_free_type_aliases >= 201907L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_atomic_flag_test >= 201907L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_atomic_wait >= 201907L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_semaphore >= 201907L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_latch >= 201907L</code> </entry></row>
+ <row><entry> <code>__cpp_lib_barrier >= 201907L</code> </entry></row>
+ </tbody></tgroup></informaltable>
+ </entry>
+ </row>
+
+ <row>
+ <entry> Fixing Atomic Initialization </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0883r2.pdf";>
+ P0883R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_atomic_value_initialization >= 201911L</code> </entry>
+ </row>
+
+
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Ranges and Concepts</emphasis>
+ </entry>
+ </row>
+
+ <row>
+ <entry> Standard Library Concepts </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0898r3.pdf";>
+ P0898R3 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_concepts >= 201806L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Rename concepts to standard_case for C++20, while we still can </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1754r1.pdf";>
+ P1754R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_concepts >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Wording for <emphasis><code>boolean-testable</code></emphasis> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1964r2.html";>
+ P1964R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_concepts >= 202002L</code> </entry>
+ </row>
+
+ <row>
+ <entry> The One Ranges Proposal </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0896r4.pdf";>
+ P0896R4 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_ranges >= 201811L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Input Range Adaptors </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1035r7.pdf";>
+ P1035R7 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_ranges >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <entry> <code>ranges</code> compare algorithm are over-constrained </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1716r3.html";>
+ P1716R3 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_ranges >= 201911L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Remove CommonReference requirement from StrictWeakOrdering (a.k.a Fixing Relations) </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1248r1.html";>
+ P1248R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Ranges Design Cleanup </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1252r2.pdf";>
+ P1252R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry />
+ </row>
+
+
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Time, dates, calendars, time zones</emphasis>
+ </entry>
</row>
<row>
@@ -251,43 +561,234 @@ Feature-testing recommendations for C++</link>.
<entry> Extending chrono to Calendars and Time Zones </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0355r7.html";>
- P0355R7
- </link>
+ P0355R7 </link>
</entry>
- <entry align="center"> </entry>
- <entry />
+ <entry/>
+ <entry> <code>__cpp_lib_chrono >= 201803L</code> </entry>
</row>
<row>
<?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Thou Shalt Not Specialize std Function Templates! </entry>
+ <entry> Miscellaneous minor fixes for chrono </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0551r3.pdf";>
- P0551R3
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1466r3.html";>
+ P1466R3 </link>
</entry>
- <entry align="center"> </entry>
+ <entry/>
+ <entry> <code>__cpp_lib_chrono >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <entry> <code><chrono></code> <code>zero()</code>, <code>min()</code>, and <code>max()</code> should be <code>noexcept</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0972r0.pdf";>
+ P0972R0 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
<entry />
</row>
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Three-way comparison</emphasis>
+ </entry>
+ </row>
+
+ <row>
+ <entry> Library Support for the Spaceship (Comparison) Operator </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0768r1.pdf";>
+ P0768R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_three_way_comparison >= 201711L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Symmetry for spaceship </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0905r1.html";>
+ P0905R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Adding <=> to the standard library </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1614r2.html";>
+ P1614R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry>
+ <code>__cpp_lib_three_way_comparison >= 201907L</code>
+ </entry>
+ </row>
+
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Strings and text</emphasis>
+ </entry>
+ </row>
+
<row>
<?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Manipulators for C++ Synchronized Buffered Ostream </entry>
+ <entry> <code>string::reserve</code> Should Not Shrink </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0753r2.pdf";>
- P0753R2
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0966r1.html";>
+ P0966R1 </link>
</entry>
<entry align="center"> </entry>
<entry />
</row>
<row>
- <entry> <code><version></code> </entry>
+ <entry> <code>char8_t</code>: A type for UTF-8 characters and strings </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0754r2.pdf";>
- P0754R2
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0482r6.html";>
+ P0482R6 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_char8_t >= 201811L</code> </entry>
+ </row>
+
+ <row>
+ <entry> <code>char8_t</code> backward compatibility remediation </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1423r3.html";>
+ P1423R3 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_char8_t >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Text formatting </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0645r10.html";>
+ P0645R10 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry>
+ <code>__cpp_lib_format >= 201907L</code>
+ </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Integration of chrono with text formatting </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1361r2.pdf";>
+ P1361R2 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry>
+ <code>__cpp_lib_format >= 201907L</code>
+ </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Printf corner cases in <code>std::format</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1652r1.html";>
+ P1652R1 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry>
+ <code>__cpp_lib_format >= 201907L</code>
+ </entry>
+ </row>
+
+ <row>
+ <entry> String Prefix and Suffix Checking </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0457r2.html";>
+ P0457R2 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_starts_ends_with >= 201711L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Update The Reference To The Unicode Standard </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1025r1.html";>
+ P1025R1 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry />
+ </row>
+
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Containers</emphasis>
+ </entry>
+ </row>
+
+ <row>
+ <entry> span: bounds-safe views for sequences of objects </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0122r7.pdf";>
+ P0122R7 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_span >= 201803L</code> </entry>
+ </row>
+
+ <row>
+ <entry>
+ Usability Enhancements for <classname>std::span</classname>
+ </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1024r3.pdf";>
+ P1024R3 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_span >= 201902L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Should Span be Regular? </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1085r2.md";>
+ P1085R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry/>
+ </row>
+
+ <row>
+ <entry> Fixed-size <code><span></code> construction from dynamic range </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1976r2.html";>
+ P1976R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_span >= 202002L</code> </entry>
+ </row>
+
+ <row>
+ <entry> <code>std::to_array</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0325r4.html";>
+ P0325R4 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_to_array >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Checking for Existence of an Element in Associative Containers </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0458r2.html";>
+ P0458R2 </link>
</entry>
<entry align="center"> 9.1 </entry>
<entry />
@@ -298,372 +799,111 @@ Feature-testing recommendations for C++</link>.
<entry> Comparing Unordered Containers </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0809r0.pdf";>
- P0809R0
- </link>
+ P0809R0 </link>
</entry>
<entry align="center"> </entry>
<entry />
</row>
<row>
- <entry> Constexpr iterator requirements </entry>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Heterogeneous lookup for unordered containers </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0858r0.html";>
- P0858R0
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0919r3.html";>
+ P0919R3 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry> <code>__cpp_lib_generic_unordered_lookup >= 201811</code> </entry>
+ </row>
+
+ <row>
+ <entry> Adopt Consistent Container Erasure from Library Fundamentals 2 for C++20 </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1209r0.html";>
+ P1209R0 </link>
</entry>
<entry align="center"> 9.1 </entry>
- <entry> <code>__cpp_lib_string_view >= 201803L</code>
- and <code>__cpp_lib_array_constexpr >= 201803L</code> </entry>
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Symmetry for spaceship </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0905r1.html";>
- P0905R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> <code>string::reserve</code> Should Not Shrink </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0966r1.html";>
- P0966R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> Atomic Ref </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0019r8.html";>
- P0019R8
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_atomic_ref >= 201806L</code> </entry>
- </row>
-
- <row>
- <entry> Checking for Existence of an Element in Associative Containers </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0458r2.html";>
- P0458R2
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> LWG 2511: guaranteed copy elision for piecewise construction </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0475r1.html";>
- P0475R1
- </link>
- </entry>
- <entry align="center"> 7.1 </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Bit-casting object representations </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0476r2.html";>
- P0476R2
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> The Curious Case of Padding Bits, Featuring Atomic Compare-and-Exchange </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0528r3.html";>
- P0528R3
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Support for contract based programming in C++ </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0542r5.html";>
- P0542R5
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> Integral power-of-2 operations </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0556r3.html";>
- P0556R3
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Reviewing Deprecated Facilities of C++17 for C++20 </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0619r4.html";>
- P0619R4
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
+ <entry> <code>__cpp_lib_erase_if >= 201811L</code> </entry>
</row>
<row>
<entry> Improving the Return Value of Erase-Like Algorithms </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0646r1.pdf";>
- P0646R1
- </link>
+ P0646R1 </link>
</entry>
<entry align="center"> 9.1 </entry>
<entry> <code>__cpp_lib_list_remove_return_type >= 201806L</code> </entry>
</row>
+ <row>
+ <entry> Improving the Return Value of Erase-Like Algorithms II: Free <code>erase</code>/<code>erase_if</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1115r3.pdf";>
+ P1115R3 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry>
+ <informaltable colsep="0" rowsep="0" rowheader="norowheader" frame="none"><tgroup cols="1"><tbody>
+ <row><entry> <code>__cpp_lib_erase_if >= 202002L</code> </entry></row>
+ <row><entry> (defined to <code>201900L</code> for GCC 9.1 and 9.2 so use <code>> 201811L</code>) </entry></row>
+ </tbody></tgroup></informaltable>
+ </entry>
+ </row>
+
+ <row>
+ <entry> Signed ssize() functions, unsigned size() functions </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1227r2.html";>
+ P1227R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_ssize >= 201902L</code> </entry>
+ </row>
+
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Memory management</emphasis>
+ </entry>
+ </row>
+
+ <row>
+ <entry> Utility to convert a pointer to a raw pointer </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0653r2.html";>
+ P0653R2 </link>
+ </entry>
+ <entry align="center"> 8.1 </entry>
+ <entry> <code>__cpp_lib_to_address >= 201711L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Extending <code>make_shared</code> to Support Arrays </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0674r1.html";>
+ P0674R1 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry> <code>__cpp_lib_shared_ptr_arrays >= 201707L</code> </entry>
+ </row>
+
<row>
<entry> Efficient sized delete for variable sized classes </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0722r3.html";>
- P0722R3
- </link>
+ P0722R3 </link>
</entry>
<entry align="center"> 9.1 </entry>
<entry> <code>__cpp_lib_destroying_delete >= 201806L</code> </entry>
</row>
- <row>
- <entry> Implicit conversion traits and utility functions </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0758r1.html";>
- P0758R1
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code>fpos</code> Requirements </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0759r1.html";>
- P0759R1
- </link>
- </entry>
- <entry align="center"> Note 1 </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Add <code>shift</code> to <code><algorithm></code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0769r2.pdf";>
- P0769R2
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Standard Library Specification in a Concepts and Contracts World </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0788r3.pdf";>
- P0788R3
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> Constexpr for <code>swap</code> and swap related functions </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0879r0.html";>
- P0879R0
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_constexpr_algorithms >= 201806L</code> </entry>
- </row>
-
- <row>
- <entry> The <code>identity</code> metafunction </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0887r1.pdf";>
- P0887R1
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code>explicit(bool)</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0892r2.html";>
- P0892R2
- </link>
- </entry>
- <entry align="center"> Note 1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Standard Library Concepts </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0898r3.pdf";>
- P0898R3
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_concepts >= 201806L</code> </entry>
- </row>
-
- <row>
- <entry> Eradicating unnecessarily explicit default constructors from the standard library </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0935r0.html";>
- P0935R0
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Integrating feature-test macros into the C++ WD </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0941r2.html";>
- P0941R2
- </link>
- </entry>
- <entry align="center"> 5.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code>constexpr</code> comparison operators for <code>std::array</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1023r0.pdf";>
- P1023R0
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Update The Reference To The Unicode Standard </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1025r1.html";>
- P1025R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Consistency improvements for <code><=></code> and other comparison operators </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1120r0.html";>
- P1120R0
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code>unwrap_ref_decay</code> and <code>unwrap_reference</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0318r1.pdf";>
- P0318R1
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Simplified partial function application </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0356r5.html";>
- P0356R5
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry> <code>__cpp_lib_bind_front >= 201811L</code> </entry>
- </row>
-
- <row>
- <entry> <code>reference_wrapper</code> for incomplete types </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0357r3.html";>
- P0357R3
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code>char8_t</code>: A type for UTF-8 characters and strings </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0482r6.html";>
- P0482R6
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry> <code>__cpp_lib_char8_t >= 201811L</code> </entry>
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Fixing <code>operator>>(basic_istream&, CharT*)</code> (LWG 2499) </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0487r1.html";>
- P0487R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
<row>
<entry> Utility functions to implement uses-allocator construction </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0591r4.pdf";>
- P0591R4
- </link>
+ P0591R4 </link>
</entry>
<entry align="center"> 9.1 </entry>
<entry>
@@ -672,44 +912,217 @@ Feature-testing recommendations for C++</link>.
</row>
<row>
- <entry> P0595R2 <code>std::is_constant_evaluated()</code> </entry>
+ <entry> <code>std::assume_aligned</code> </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0595r2.html";>
- P0595R2
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1007r3.pdf";>
+ P1007R3 </link>
</entry>
<entry align="center"> 9.1 </entry>
- <entry />
+ <entry> <code>__cpp_lib_assume_aligned >= 201811L</code> (since 9.4, see Note 1) </entry>
</row>
<row>
- <entry> <code>variant</code> and <code>optional</code> should propagate copy/move triviality </entry>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Smart pointer creation with default initialization </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0602r4.html";>
- P0602R4
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1020r1.html";>
+ P1020R1 </link>
</entry>
- <entry align="center"> 8.3 </entry>
- <entry />
+ <entry align="center"> </entry>
+ <entry> <code>__cpp_lib_smart_ptr_for_overwrite >= 201811L</code> </entry>
</row>
<row>
- <entry> A sane <code>variant</code> converting constructor </entry>
+ <entry> Make stateful allocator propagation more consistent for <code>operator+(basic_string)</code> </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0608r3.html";>
- P0608R3
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1165r1.html";>
+ P1165R1 </link>
</entry>
<entry align="center"> 10.1 </entry>
<entry />
</row>
<row>
- <entry> <code>visit<R></code>: Explicit Return Type for <code>visit</code> </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0655r1.pdf";>
- P0655R1
- </link>
+ <classname>polymorphic_allocator<></classname> as a vocabulary type
+ </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0339r6.pdf";>
+ P0339R6 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry>
+ <code>__cpp_lib_polymorphic_allocator >= 201902L</code> (since 9.4, see Note 1)
+ </entry>
+ </row>
+
+ <row>
+ <entry> LWG 2511: guaranteed copy elision for piecewise construction </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0475r1.html";>
+ P0475R1 </link>
+ </entry>
+ <entry align="center"> 7.1 </entry>
+ <entry />
+ </row>
+
+
+ <row>
+ <entry namest="c1" nameend="c4" align="left">
+ <emphasis role="bold">Miscellaneous</emphasis>
+ </entry>
+ </row>
+
+ <row>
+ <entry> <code>nodiscard</code> in the Library </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0600r1.pdf";>
+ P0600R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> de-pessimize legacy algorithms with <code>std::move</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0616r0.pdf";>
+ P0616R0 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Deprecate POD </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0767r1.html";>
+ P0767R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Treating Unnecessary <code>decay</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0777r1.pdf";>
+ P0777R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Thou Shalt Not Specialize std Function Templates! </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0551r3.pdf";>
+ P0551R3 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry />
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Bit-casting object representations </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0476r2.html";>
+ P0476R2 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry> <code>__cpp_lib_bit_cast >= 201806L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Integral power-of-2 operations </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0556r3.html";>
+ P0556R3 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_int_pow2 >= 201806L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <entry> On the names of low-level bit manipulation functions </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1956r1.pdf";>
+ P1956R1 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_int_pow2 >= 202002L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Safe integral comparisons </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p0586r2.html";>
+ P0586R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_integer_comparison_functions >= 202002L</code> </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Reviewing Deprecated Facilities of C++17 for C++20 </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0619r4.html";>
+ P0619R4 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> <code>fpos</code> Requirements </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0759r1.html";>
+ P0759R1 </link>
+ </entry>
+ <entry align="center"> — </entry>
+ <entry />
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Add <code>shift</code> to <code><algorithm></code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0769r2.pdf";>
+ P0769R2 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry> <code>__cpp_lib_shift >= 201806L</code> </entry>
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Standard Library Specification in a Concepts and Contracts World </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0788r3.pdf";>
+ P0788R3 </link>
+ </entry>
+ <entry align="center"> </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> <code>explicit(bool)</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0892r2.html";>
+ P0892R2 </link>
+ </entry>
+ <entry align="center"> — </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> Eradicating unnecessarily explicit default constructors from the standard library </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0935r0.html";>
+ P0935R0 </link>
</entry>
<entry align="center"> 9.1 </entry>
<entry />
@@ -719,124 +1132,100 @@ Feature-testing recommendations for C++</link>.
<entry> <code>std::function</code> move constructor should be <code>noexcept</code> </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0771r1.pdf";>
- P0771R1
- </link>
+ P0771R1 </link>
</entry>
<entry align="center"> 7.2 </entry>
<entry />
</row>
<row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> The One Ranges Proposal </entry>
+ <entry> Simplified partial function application </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0896r4.pdf";>
- P0896R4
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0356r5.html";>
+ P0356R5 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_bind_front >= 201811L</code> </entry>
+ </row>
+
+ <row>
+ <entry> <code>bind_front</code> should not unwrap <code>reference_wrapper</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1651r0.html";>
+ P1651R0 </link>
+ </entry>
+ <entry align="center"> 9.3 </entry>
+ <entry> <code>__cpp_lib_bind_front >= 201907L</code> </entry>
+ </row>
+
+ <row>
+ <entry> <code>reference_wrapper</code> for incomplete types </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0357r3.html";>
+ P0357R3 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <?dbhtml bgcolor="#C8B0B0" ?>
+ <entry> Fixing <code>operator>>(basic_istream&, CharT*)</code> (LWG 2499) </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0487r1.html";>
+ P0487R1 </link>
</entry>
<entry align="center"> </entry>
<entry />
</row>
+ <row>
+ <entry> <code>variant</code> and <code>optional</code> should propagate copy/move triviality </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0602r4.html";>
+ P0602R4 </link>
+ </entry>
+ <entry align="center"> 8.3 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> A sane <code>variant</code> converting constructor </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0608r3.html";>
+ P0608R3 </link>
+ </entry>
+ <entry align="center"> 10.1 </entry>
+ <entry />
+ </row>
+
+ <row>
+ <entry> <code>visit<R></code>: Explicit Return Type for <code>visit</code> </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0655r1.pdf";>
+ P0655R1 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry />
+ </row>
+
<row>
<entry> P0899R1 - LWG 3016 is not a defect </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0899r1.html";>
- P0899R1
- </link>
+ P0899R1 </link>
</entry>
<entry align="center"> 7.1 </entry>
<entry />
</row>
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Heterogeneous lookup for unordered containers </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0919r3.html";>
- P0919R3
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code><chrono></code> <code>zero()</code>, <code>min()</code>, and <code>max()</code> should be <code>noexcept</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0972r0.pdf";>
- P0972R0
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Constexpr in <code>std::pointer_traits</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1006r1.pdf";>
- P1006R1
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> <code>std::assume_aligned</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1007r3.pdf";>
- P1007R3
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Smart pointer creation with default initialization </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1020r1.html";>
- P1020R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Misc constexpr bits </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1032r1.html";>
- P1032R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> Should Span be Regular? </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1085r2.md";>
- P1085R2
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_span >= 201902L</code> </entry>
- </row>
-
<row>
<entry> Editorial Guidance for merging P0019r8 and P0528r3 </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1123r0.html";>
- P1123R0
- </link>
+ P1123R0 </link>
</entry>
- <entry align="center"> Note 1 </entry>
+ <entry align="center"> — </entry>
<entry />
</row>
@@ -845,142 +1234,43 @@ Feature-testing recommendations for C++</link>.
<entry> Cleaning up Clause 20 </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1148r0.pdf";>
- P1148R0
- </link>
+ P1148R0 </link>
</entry>
<entry align="center"> </entry>
<entry />
</row>
- <row>
- <entry> Make stateful allocator propagation more consistent for <code>operator+(basic_string)</code> </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1165r1.html";>
- P1165R1
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Adopt Consistent Container Erasure from Library Fundamentals 2 for C++20 </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1209r0.html";>
- P1209R0
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry> <code>__cpp_lib_erase_if >= 201811L</code> </entry>
- </row>
-
<row>
<?dbhtml bgcolor="#C8B0B0" ?>
<entry> Completing the Rebase of Library Fundamentals, Version 3, Working Draft </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1210r0.html";>
- P1210R0
- </link>
+ P1210R0 </link>
</entry>
<entry align="center"> </entry>
<entry />
</row>
<row>
- <?dbhtml bgcolor="#C8B0B0" ?>
<entry> Alternative Wording for P0907R4 Signed Integers are Two's Complement </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1236r1.html";>
- P1236R1
- </link>
+ P1236R1 </link>
</entry>
- <entry align="center"> </entry>
- <entry />
+ <entry align="center"> — </entry>
+ <entry/>
</row>
<row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Remove CommonReference requirement from StrictWeakOrdering (a.k.a Fixing Relations) </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1248r1.html";>
- P1248R1
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#B0B0B0" ?>
- <entry> Improving Completeness Requirements for Type Traits </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1285r0.pdf";>
- P1285R0
- </link>
- </entry>
- <entry align="center"> Partial </entry>
- <entry />
- </row>
-
- <row>
- <entry> Well-behaved interpolation for numbers and pointers </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0811r3.html";>
- P0811R3
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry> <code>__cpp_lib_interpolate >= 201902L</code> </entry>
- </row>
-
- <row>
- <entry> Missing feature test macros </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1353r0.html";>
- P1353R0
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry>
- <classname>polymorphic_allocator<></classname>
- as a vocabulary type
- </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0339r6.pdf";>
- P0339R6
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <entry> Making std::underlying_type SFINAE-friendly </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0340r3.html";>
- P0340R3
- </link>
- </entry>
- <entry align="center"> 9.1 </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
<entry>
I Stream, You Stream, We All Stream for
<classname>istream_iterator</classname>
</entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0738r2.html";>
- P0738R2
- </link>
+ P0738R2 </link>
</entry>
- <entry align="center"> </entry>
+ <entry align="center"> 10.1 </entry>
<entry />
</row>
@@ -991,11 +1281,10 @@ Feature-testing recommendations for C++</link>.
</entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1458r1.pdf";>
- P1458R1
- </link>
+ P1458R1 </link>
</entry>
- <entry align="center"> </entry>
- <entry> Note 1 </entry>
+ <entry align="center"> — </entry>
+ <entry/>
</row>
<row>
@@ -1005,11 +1294,10 @@ Feature-testing recommendations for C++</link>.
</entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1458r1.pdf";>
- P1459R1
- </link>
+ P1459R1 </link>
</entry>
- <entry align="center"> </entry>
- <entry> Note 1 </entry>
+ <entry align="center"> — </entry>
+ <entry/>
</row>
<row>
@@ -1019,11 +1307,10 @@ Feature-testing recommendations for C++</link>.
</entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1462r1.html";>
- P1462R1
- </link>
+ P1462R1 </link>
</entry>
- <entry align="center"> </entry>
- <entry> Note 1 </entry>
+ <entry align="center"> — </entry>
+ <entry/>
</row>
<row>
@@ -1033,10 +1320,9 @@ Feature-testing recommendations for C++</link>.
</entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1463r1.pdf";>
- P1463R1
- </link>
+ P1463R1 </link>
</entry>
- <entry align="center"> 10 </entry>
+ <entry align="center"> 10.1 </entry>
<entry/>
</row>
@@ -1048,8 +1334,7 @@ Feature-testing recommendations for C++</link>.
</entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1464r1.pdf";>
- P1464R1
- </link>
+ P1464R1 </link>
</entry>
<entry align="center"> </entry>
<entry />
@@ -1060,212 +1345,84 @@ Feature-testing recommendations for C++</link>.
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1164r1.pdf";>
P1164R1
- </link>
+ </link>
</entry>
<entry align="center"> 8.3 </entry>
<entry> Treated as a DR for C++17 </entry>
</row>
<row>
- <?dbhtml bgcolor="#C8B0B0" ?>
<entry>
Target Vectorization Policies from Parallelism V2 TS to C++20
</entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1001r2.html";>
- P1001R2
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry> Signed ssize() functions, unsigned size() functions </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1227r2.html";>
- P1227R2
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry />
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Ranges Design Cleanup </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1252r2.pdf";>
- P1252R2
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry />
- </row>
-
- <row>
- <entry>
- Usability Enhancements for <classname>std::span</classname>
- </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1024r3.pdf";>
- P1024R3
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_span >= 201902L</code> </entry>
- </row>
-
- <row>
- <entry> Traits for [Un]bounded Arrays </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1357r1.pdf";>
- P1357R1
- </link>
+ P1001R2 </link>
</entry>
<entry align="center"> 9.1 </entry>
- <entry> <code>__cpp_lib_bounded_array_traits >= 201902L</code> </entry>
+ <entry> <code>__cpp_lib_execution >= 201902L</code> (since 9.4, see Note 1)</entry>
</row>
<row>
- <entry> std::to_array </entry>
+ <entry> Merge Coroutines TS into C++20 working draft </entry>
<entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0325r4.html";>
- P0325R4
- </link>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0912r5.html";>
+ P0912R5 </link>
</entry>
<entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_to_array >= 201907L</code> </entry>
+ <entry> <code>__cpp_lib_coroutines >= 201902L</code> </entry>
+ </row>
+
+ <row>
+ <entry> Endian just Endian </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0463r1.html";>
+ P0463R1 </link>
+ </entry>
+ <entry align="center"> 8.1 </entry>
+ <entry> <code>__cpp_lib_endian >= 201907L</code> </entry>
</row>
<row>
<entry> Bit operations </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0553r4.html";>
- P0553R4
- </link>
+ P0553R4 </link>
</entry>
<entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_bitops >= 201907L</code> </entry>
+ <entry> <code>__cpp_lib_bitops >= 201907L</code> (since 9.4, see Note 1) </entry>
+ </row>
+
+ <row>
+ <entry> Well-behaved interpolation for numbers and pointers </entry>
+ <entry>
+ <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0811r3.html";>
+ P0811R3 </link>
+ </entry>
+ <entry align="center"> 9.1 </entry>
+ <entry> <code>__cpp_lib_interpolate >= 201902L</code> </entry>
</row>
<row>
<entry> Mathematical constants </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0631r8.pdf";>
- P0631R8
- </link>
+ P0631R8 </link>
</entry>
<entry align="center"> 10.1 </entry>
<entry> <code>__cpp_lib_math_constants >= 201907L</code> </entry>
</row>
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Layout-compatibility and pointer-interconvertibility traits </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0466r5.pdf";>
- P0466R5
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry>
- <code>__cpp_lib_is_layout_compatible >= 201907L</code>,
- <code>__cpp_lib_is_layout_interconvertible >= 201907L</code>,
- </entry>
- </row>
-
- <row>
- <entry> std::stop_token and std::jthread </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0660r10.pdf";>
- P0660R10
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_jthread >= 201907L</code> </entry>
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Text formatting </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0645r10.html";>
- P0645R10
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry>
- <code>__cpp_lib_format >= 201907L</code>,
- </entry>
- </row>
-
- <row>
- <entry> constexpr std::invoke and related utilities </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1065r2.html";>
- P1065R2
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_lib_constexpr_invoke >= 201907L</code> </entry>
- </row>
-
- <row>
- <entry> constexpr std::allocator and related utilities </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0784r7.html";>
- P0784R7
- </link>
- </entry>
- <entry align="center"> 10.1 </entry>
- <entry> <code>__cpp_constexpr_dynamic_alloc >= 201907L</code> </entry>
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Atomic waiting and notifying, std::semaphore, std::latch and std::barrier </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1135r6.html";>
- P1135R6
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry>
- <code>__cpp_lib_atomic_lock_free_type_aliases >= 201907L</code> in <atomic>,
- <code>__cpp_lib_atomic_flag_test >= 201907L</code> in <atomic>,
- <code>__cpp_lib_atomic_wait >= 201907L</code> in <atomic>,
- <code>__cpp_lib_semaphore >= 201907L</code> in <semaphore>,
- <code>__cpp_lib_latch >= 201907L</code> in <latch>,
- <code>__cpp_lib_barrier >= 201907L</code> in <barrier>
- </entry>
- </row>
-
<row>
<?dbhtml bgcolor="#C8B0B0" ?>
<entry> std::source_location </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1208r6.pdf";>
- P1208R6
- </link>
+ P1208R6 </link>
</entry>
<entry align="center"> </entry>
<entry>
- <code>__cpp_lib_source_location >= 201907L</code>,
- </entry>
- </row>
-
- <row>
- <?dbhtml bgcolor="#C8B0B0" ?>
- <entry> Adding <=> to the standard library </entry>
- <entry>
- <link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1614r2.html";>
- P1614R2
- </link>
- </entry>
- <entry align="center"> </entry>
- <entry>
- <code>__cpp_lib_spaceship >= 201907L</code>,
+ <code>__cpp_lib_source_location >= 201907L</code>
</entry>
</row>
@@ -1274,8 +1431,7 @@ Feature-testing recommendations for C++</link>.
<entry> Efficient access to std::basic_stringbuf's Buffer </entry>
<entry>
<link xmlns:xlink="http://www.w3.org/1999/xlink"; xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0408r7.pdf";>
- P0408R7
- </link>
+ P0408R7 </link>
</entry>
<entry align="center"> </entry>
<entry />
@@ -1286,23 +1442,9 @@ Feature-testing recommendations for C++</link>.
</table>
<para>
-Note 1: The changes in the proposal either do not affect the code in libstdc++,
-or the changes are not required for conformance.
+Note 1: This feature is supported in older releases but the
+<code>__cpp_lib</code> macro is not defined to the right value
+(or not defined at all) until the version shown in parentheses.
</para>
-
-<section xml:id="iso.2020.specific" xreflabel="Implementation Specific"><info><title>Implementation Specific Behavior</title></info>
-
- <para>For behaviour which is also specified by previous standards,
- see <link linkend="iso.1998.specific">C++ 1998/2003 Implementation
- Specific Behavior</link>, <link linkend="iso.2011.specific">C++
- 2011 Implementation Specific Behavior</link> and <link
- linkend="iso.2017.specific">C++ 2017 Implementation Specific
- Behavior</link>.
- This section only documents behaviour which is new in the 202a draft.
- </para>
-
-
-</section>
-
</section>
