Author: rsmith
Date: Tue Feb 9 16:48:14 2016
New Revision: 260311
URL: http://llvm.org/viewvc/llvm-project?rev=260311&view=rev
Log:
Update documentation to reflect that libc++abi provides __cxa_thread_atexit
(and has for quite a while). Also document that we have not yet implemented the
new inheriting constructor rules.
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=260311&r1=260310&r2=260311&view=diff
==============================================================================
--- cfe/trunk/www/cxx_status.html (original)
+++ cfe/trunk/www/cxx_status.html Tue Feb 9 16:48:14 2016
@@ -67,8 +67,7 @@ patches are needed to make <a href="libs
work with Clang in C++11 mode. Patches are also needed to make
<a href="libstdc++4.6-clang11.patch">libstdc++-4.6</a>
and <a href="libstdc++4.7-clang11.patch">libstdc++-4.7</a> work with Clang
-releases prior to version 3.2 in C++11 mode. <tt>thread_local</tt> support
-currently requires the C++ runtime library from g++-4.8 or later.</p>
+releases prior to version 3.2 in C++11 mode.
<table width="689" border="1" cellspacing="0">
<tr>
@@ -373,7 +372,7 @@ currently requires the C++ runtime libra
<tr>
<td>Thread-local storage</td>
<td><a
href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2659.htm";>N2659</a></td>
- <td class="full" align="center">Clang 3.3</td>
+ <td class="full" align="center">Clang 3.3 <a href="#n2659">(5)</a></td>
</tr>
<tr>
<td>Dynamic initialization and destruction with concurrency</td>
@@ -402,7 +401,7 @@ currently requires the C++ runtime libra
<tr>
<td>Extended integral types</td>
<td><a
href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1988.pdf";>N1988</a></td>
- <td class="na" align="center">N/A <a href="#n1988">(5)</a></td>
+ <td class="na" align="center">N/A <a href="#n1988">(6)</a></td>
</tr>
</table>
@@ -415,7 +414,11 @@ such as Clang that does not provide garb
strong compare-exchanges.</span><br>
<span id="n2664">(4): <code>memory_order_consume</code> is lowered to
<code>memory_order_acquire</code>.</span><br>
-<span id="n1988">(5): No compiler changes are required for an implementation
+<span id="n2659">(5): <code>thread_local</code> support
+requires a C++ runtime library providing <code>__cxa_thread_atexit</code>, such
+as <a href="http://libcxxabi.llvm.org";>libc++abi</a> 3.6 or later,
+or libsupc++ 4.8 or later.</span><br>
+<span id="n1988">(6): No compiler changes are required for an implementation
such as Clang that does not provide any extended integer types.
<code>__int128</code> is not treated as an extended integer type,
because changing <code>intmax_t</code> would be an ABI-incompatible
@@ -501,12 +504,12 @@ Clang version in which each feature beca
<tr>
<td>C++ Sized Deallocation</td>
<td><a
href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3778.html";>N3778</a></td>
- <td class="full" align="center">Clang 3.4 <a href="#n3778">(6)</a></td>
+ <td class="full" align="center">Clang 3.4 <a href="#n3778">(7)</a></td>
</tr>
</table>
<p>
-<span id="n3778">(6): In Clang 3.7 and later, sized deallocation is only
enabled
+<span id="n3778">(7): In Clang 3.7 and later, sized deallocation is only
enabled
if the user passes the <code>-fsized-deallocation</code> flag. The user must
supply definitions of the sized deallocation functions, either by providing
them
explicitly or by using a C++ standard library that does. <code>libstdc++</code>
@@ -517,9 +520,9 @@ version 3.7.
<h2 id="cxx17">C++1z implementation status</h2>
-<p>Clang has <b>highly experimental</b> support for some proposed features of
-the C++ standard following C++14,
-provisionally named C++1z. The following table describes which C++1z features
+<p>Clang has <b>experimental</b> support for some proposed features of
+the C++ standard following C++14, provisionally named C++1z.
+The following table describes which C++1z features
have been implemented in Clang and in which Clang version they became
available.</p>
@@ -564,7 +567,7 @@ as the draft C++1z standard evolves.</p>
<tr>
<td>New <tt>auto</tt> rules for direct-list-initialization
<td><a
href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3922.html";>N3922</a></td>
- <td class="svn" align="center">Clang 3.8 <a href="#n3922">(7)</a></td>
+ <td class="svn" align="center">Clang 3.8 <a href="#n3922">(8)</a></td>
</tr>
<!-- Urbana papers -->
<tr>
@@ -613,10 +616,15 @@ as the draft C++1z standard evolves.</p>
<td><a
href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0061.html";>P0061R1</a></td>
<td class="full" align="center">Yes</td>
</tr>
+ <tr>
+ <td>New specification for inheriting constructors (<a
href="cxx_dr_status.html#1941">DR1941</a> et al)</td>
+ <td><a
href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0136r1.html";>P0136R1</a></td>
+ <td class="none" align="center">No</td>
+ </tr>
</table>
<p>
-<span id="n3922">(7): This is a backwards-incompatible change that is applied
to
+<span id="n3922">(8): This is a backwards-incompatible change that is applied
to
all language versions that allow type deduction from <tt>auto</tt>
(per the request of the C++ committee).
In Clang 3.7, a warning is emitted for all cases that would change meaning.
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