r308099 - [cxx_status] Add approved Toronto WG21 motions.

Sun Jul 16 11:37:58 PDT 2017

On 16 July 2017 at 05:49, Nico Weber via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> On Jul 15, 2017 11:43 AM, "Richard Smith via cfe-commits" <
> cfe-commits at lists.llvm.org> wrote:
>
> Author: rsmith
> Date: Sat Jul 15 08:42:36 2017
> New Revision: 308099
>
> URL: http://llvm.org/viewvc/llvm-project?rev=308099&view=rev
> Log:
> [cxx_status] Add approved Toronto WG21 motions.
>
> Modified:
>     cfe/trunk/www/cxx_status.html
>
> Modified: cfe/trunk/www/cxx_status.html
> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/www/cxx_status
> .html?rev=308099&r1=308098&r2=308099&view=diff
> ============================================================
> ==================
> --- cfe/trunk/www/cxx_status.html (original)
> +++ cfe/trunk/www/cxx_status.html Sat Jul 15 08:42:36 2017
> @@ -2,7 +2,7 @@
>  <html>
>  <head>
>    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
> -  <title>Clang - C++1z, C++14, C++11 and C++98 Status</title>
> +  <title>Clang - C++17, C++14, C++11 and C++98 Status</title>
>    <link type="text/css" rel="stylesheet" href="menu.css">
>    <link type="text/css" rel="stylesheet" href="content.css">
>    <style type="text/css">
> @@ -32,7 +32,7 @@
>  href="#cxx98">C++98 / C++03</a>, <a
>  href="#cxx11">C++11</a>, and <a
>  href="#cxx14">C++14</a>), and most of the upcoming <a
> -href="#cxx17">C++1z</a> standard.
> +href="#cxx17">C++17</a> standard.
>
>  <p>The Clang community is continually striving to improve C++ standards
>  compliance between releases by submitting and tracking <a
> @@ -519,14 +519,12 @@ version 3.7.
>  </p>
>  </details>
>
> -<h2 id="cxx17">C++1z implementation status</h2>
> +<h2 id="cxx17">C++17 implementation status</h2>
>
> -<p>Clang has <b>experimental</b> support for some proposed features of
> -the C++ standard following C++14, provisionally named C++1z.
> -Note that support for these features may change or be removed without
> notice,
> -as the draft C++1z standard evolves.
> +<p>Clang SVN implements all the features
> +of the C++ 2017 Draft International Standard.
>
> -<p>You can use Clang in C++1z mode with the <code>-std=c++1z</code>
> option.</p>
> +<p>You can use Clang in C++17 mode with the <code>-std=c++1z</code>
> option.</p>
>
>
> Ist the -std= flag intentionally still 1z?
>

It's intentionally still documented as 1z because clang doesn't support
-std=c++17 yet. But it's probably reasonable to change that now (even
though technically the contents of the document could still change and it
could still be published after 2017, neither of those is a significant risk
and we intend to call it C++17 even if the latter happens).

>  <details open>
>  <summary>List of features and minimum Clang version with support</summary>
> @@ -534,7 +532,7 @@ as the draft C++1z standard evolves.
>  <table width="689" border="1" cellspacing="0">
>   <tr>
>      <th>Language Feature</th>
> -    <th>C++1z Proposal</th>
> +    <th>C++17 Proposal</th>
>      <th>Available in Clang?</th>
>   </tr>
>      <!-- Issaquah 2014 papers -->
> @@ -551,7 +549,7 @@ as the draft C++1z standard evolves.
>      </tr>
>      <!--
>      <tr>
> -      <td rowspan="2">Terse range-based for loops (removed from
> C++1z)</td>
> +      <td rowspan="2">Terse range-based for loops (removed from
> C++17)</td>
>        <td rowspan="2"><a href="http://www.open-std.org/
> jtc1/sc22/wg21/docs/papers/2014/n3994.htm">N3994</a></td>
>        <td class="none" align="center">Clang 3.5: Yes</td>
>      </tr>
> @@ -777,6 +775,69 @@ code. This issue is expected to be recti
>  </p>
>  </details>
>
> +<h2 id="cxx20">C++2a implementation status</h2>
> +
> +<p>Clang does not yet support any of the propose fetures of
> +<!--<p>Clang has <b>experimental</b> support for some proposed features
> of-->
> +the C++ standard following C++17, provisionally named C++2a.
> +Note that support for these features may change or be removed without
> notice,
> +as the draft C++2a standard evolves.
> +
> +<!--<p>You can use Clang in C++2a mode with the <code>-std=c++2a</code>
> option.</p>-->
> +
> +<details open>
> +<summary>List of features and minimum Clang version with support</summary>
> +
> +<table width="689" border="1" cellspacing="0">
> + <tr>
> +    <th>Language Feature</th>
> +    <th>C++2a Proposal</th>
> +    <th>Available in Clang?</th>
> + </tr>
> +    <!-- Toronto 2017 papers -->
> +    <tr>
> +      <td>Default member initializers for bit-fields</td>
> +      <td><a href="http://wg21.link/p0683r1">P00683R1</a></td>
> +      <td class="none" align="center">No</td>
> +    </tr>
> +    <tr>
> +      <td><tt>const&</tt>-qualified pointers to members</td>
> +      <td><a href="http://wg21.link/p0704r1">P0704R1</a></td>
> +      <td class="none" align="center">No</td>
> +    </tr>
> +    <tr>
> +      <td>Allow <i>lambda-capture</i> <tt>[=, this]</tt></td>
> +      <td><a href="http://wg21.link/p0409r2">P0409R2</a></td>
> +      <td class="none" align="center">No</td>
> +    </tr>
> +    <tr>
> +      <td><tt>__VA_OPT__</tt> for preprocessor comma elision</td>
> +      <td><a href="http://wg21.link/p0306r4">P0306R4</a></td>
> +      <td class="none" align="center">No</td>
> +    </tr>
> +    <tr>
> +      <td>Designated initializers</td>
> +      <td><a href="http://wg21.link/p0329r4">P0329R4</a></td>
> +      <td class="partial" align="center">Partial (extension)</td>
> +    </tr>
> +    <tr>
> +      <td><i>template-parameter-list</i> for generic lambdas</td>
> +      <td><a href="http://wg21.link/p0428r2">P0428R2</a></td>
> +      <td class="none" align="center">No</td>
> +    </tr>
> +    <tr>
> +      <td>Initializer list constructors in class template argument
> deduction</td>
> +      <td><a href="http://wg21.link/p0702r1">P0702R1</a></td>
> +      <td class="none" align="center">No</td>
> +    </tr>
> +    <tr>
> +      <td>Concepts</td>
> +      <td><a href="http://wg21.link/p0734r0">P0734R0</a></td>
> +      <td class="none" align="center">No</td>
> +    </tr>
> +</table>
> +</details>
> +
>  <h2 id="ts">Technical specifications and standing documents</h2>
>
>  <p>ISO C++ also publishes a number of documents describing additional
> language
>
>
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