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Richard Smithcf31c6b2014-06-20 20:33:105 <title>Clang - C++1z, C++14, C++11 and C++98 Status</title>
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Richard Smithcf31c6b2014-06-20 20:33:1026<h1>C++ Support in Clang</h1>
Cedric Venet084381332009-02-14 20:20:1927<!--*************************************************************************-->
Douglas Gregor0799d912009-06-27 19:33:5828<p>Last updated: $Date$</p>
Cedric Venet084381332009-02-14 20:20:1929
Richard Smith01881102016-09-28 19:22:3630<p>Clang fully implements all published ISO C++ standards (<a
31href="#cxx98">C++98 / C++03</a>, <a
32href="#cxx11">C++11</a>, and <a
33href="#cxx14">C++14</a>), and most of the upcoming <a
34href="#cxx17">C++1z</a> standard.
Alp Toker05f89432013-12-06 06:35:4935
Richard Smith60586342013-12-09 08:52:2336<p>The Clang community is continually striving to improve C++ standards
Alp Toker05f89432013-12-06 06:35:4937compliance between releases by submitting and tracking <a
38href="cxx_dr_status.html">C++ Defect Reports</a> and implementing resolutions
39as they become available.</p>
40
41<p>Experimental work is also under way to implement <a href="#ts">C++ Technical
42Specifications</a> that will help drive the future of the C++ programming
43language.</p>
44
Richard Smith60586342013-12-09 08:52:2345<p>The <a href="http://llvm.org/bugs/">LLVM bug tracker</a> contains Clang
46C++ components that track known bugs with Clang's language conformance in
47each language mode.</p>
48
Richard Smith18743de2012-02-24 18:42:0849<h2 id="cxx98">C++98 implementation status</h2>
50
Alp Toker05f89432013-12-06 06:35:4951<p>Clang implements all of the ISO C++ 1998 standard
Douglas Gregor17aa45d2011-07-21 17:46:1552 (including the defects addressed in the ISO C++ 2003 standard)
Richard Smith707e3ba2014-06-22 16:00:0553 except for <tt>export</tt> (which was removed in C++11).
Douglas Gregorbb26a922010-02-05 23:51:1454
Richard Smith18743de2012-02-24 18:42:0855<h2 id="cxx11">C++11 implementation status</h2>
Chris Lattner6fe37482010-05-21 20:59:4056
Richard Smithe2bf8782016-09-28 21:01:3757<p>Clang 3.3 and later implement all of the <a
58 href="http://www.iso.org/iso/catalogue_detail.htm?csnumber=50372">ISO
59 C++ 2011 standard</a>.
Chris Lattner6fe37482010-05-21 20:59:4060
Richard Smith531c9a02013-03-10 00:11:0061<p>By default, Clang builds C++ code according to the C++98 standard, with many
62C++11 features accepted as extensions. You can use Clang in C++11 mode with the
63<code>-std=c++11</code> option. Clang's C++11 mode can be used
Richard Smith01881102016-09-28 19:22:3664with <a href="http://libcxx.llvm.org/">libc++</a> or with gcc's libstdc++.
Jeffrey Yasskincb407572011-03-29 22:27:5065
Richard Smithe2bf8782016-09-28 21:01:3766<details>
67<summary>List of features and minimum Clang version with support</summary>
68
Cedric Venet084381332009-02-14 20:20:1969<table width="689" border="1" cellspacing="0">
Douglas Gregor1f64b592011-10-14 23:21:4970 <tr>
Benjamin Kramer1c9e1582011-11-05 10:11:3671 <th>Language Feature</th>
Richard Smith18743de2012-02-24 18:42:0872 <th>C++11 Proposal</th>
Benjamin Kramer1c9e1582011-11-05 10:11:3673 <th>Available in Clang?</th>
Douglas Gregor1f64b592011-10-14 23:21:4974 </tr>
75 <tr>
76 <td>Rvalue references</td>
77 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2118.html">N2118</a></td>
Michael J. Spencere73bd642011-11-02 06:29:3778 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:4979 </tr>
80 <tr>
81 <td>&nbsp;&nbsp;&nbsp;&nbsp;Rvalue references for <code>*this</code></td>
82 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2439.htm">N2439</a></td>
Benjamin Kramer1c9e1582011-11-05 10:11:3683 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:4984 </tr>
85 <tr>
86 <td>Initialization of class objects by rvalues</td>
87 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1610.html">N1610</a></td>
Michael J. Spencere73bd642011-11-02 06:29:3788 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:4989 </tr>
90 <tr>
91 <td>Non-static data member initializers</td>
92 <td><a href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2008/n2756.htm">N2756</a></td>
Benjamin Kramer1c9e1582011-11-05 10:11:3693 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:4994 </tr>
95 <tr>
96 <td>Variadic templates</td>
97 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2242.pdf">N2242</a></td>
Michael J. Spencere73bd642011-11-02 06:29:3798 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:4999 </tr>
100 <tr>
101 <td>&nbsp;&nbsp;&nbsp;&nbsp;Extending variadic template template parameters</td>
102 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2555.pdf">N2555</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37103 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49104 </tr>
105 <tr>
106 <td>Initializer lists</td>
107 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2672.htm">N2672</a></td>
Richard Smith607d6312012-05-23 01:38:11108 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49109 </tr>
110 <tr>
111 <td>Static assertions</td>
112 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1720.html">N1720</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37113 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49114 </tr>
115 <tr>
116 <td><code>auto</code>-typed variables</td>
117 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1984.pdf">N1984</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37118 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49119 </tr>
120 <tr>
121 <td>&nbsp;&nbsp;&nbsp;&nbsp;Multi-declarator <code>auto</code></td>
122 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1737.pdf">N1737</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37123 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49124 </tr>
125 <tr>
126 <td>&nbsp;&nbsp;&nbsp;&nbsp;Removal of auto as a storage-class specifier</td>
127 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2546.htm">N2546</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37128 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49129 </tr>
130 <tr>
131 <td>&nbsp;&nbsp;&nbsp;&nbsp;New function declarator syntax</td>
132 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2541.htm">N2541</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37133 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49134 </tr>
135 <tr>
Douglas Gregor34b2e8b2012-02-23 03:02:32136 <td>Lambda expressions</td>
Douglas Gregor1f64b592011-10-14 23:21:49137 <td><a href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2927.pdf">N2927</a></td>
Richard Smith607d6312012-05-23 01:38:11138 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49139 </tr>
140 <tr>
141 <td>Declared type of an expression</td>
142 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2343.pdf">N2343</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37143 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49144 </tr>
145 <tr>
Douglas Gregor05989622012-04-10 20:00:33146 <td>&nbsp;&nbsp;&nbsp;&nbsp;Incomplete return types</td>
147 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3276.pdf">N3276</a></td>
Richard Smith607d6312012-05-23 01:38:11148 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor05989622012-04-10 20:00:33149 </tr>
150 <tr>
Douglas Gregor1f64b592011-10-14 23:21:49151 <td>Right angle brackets</td>
152 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1757.html">N1757</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37153 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49154 </tr>
155 <tr>
156 <td>Default template arguments for function templates</td>
157 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#226">DR226</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37158 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49159 </tr>
160 <tr>
161 <td>Solving the SFINAE problem for expressions</td>
162 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2634.html">DR339</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37163 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49164 </tr>
165 <tr>
166 <td>Alias templates</td>
167 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2258.pdf">N2258</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37168 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49169 </tr>
170 <tr>
171 <td>Extern templates</td>
172 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1987.htm">N1987</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37173 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49174 </tr>
175 <tr>
176 <td>Null pointer constant</td>
177 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf">N2431</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37178 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49179 </tr>
180 <tr>
181 <td>Strongly-typed enums</td>
182 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2347.pdf">N2347</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37183 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49184 </tr>
185 <tr>
186 <td>Forward declarations for enums</td>
Richard Smith4b38ded2012-03-14 23:13:10187 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2764.pdf">N2764</a>
188 <br><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1206">DR1206</a></td>
Richard Smith607d6312012-05-23 01:38:11189 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49190 </tr>
191 <tr>
Richard Smith3dd73db2014-01-17 00:11:48192 <td>Standardized attribute syntax</td>
Douglas Gregor1f64b592011-10-14 23:21:49193 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2761.pdf">N2761</a></td>
Richard Smith99247722013-06-17 23:54:23194 <td class="full" align="center">Clang 3.3 <a href="#n2761">(1)</a></td>
Douglas Gregor1f64b592011-10-14 23:21:49195 </tr>
196 <tr>
197 <td>Generalized constant expressions</td>
198 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2235.pdf">N2235</a></td>
Richard Smith607d6312012-05-23 01:38:11199 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49200 </tr>
201 <tr>
202 <td>Alignment support</td>
203 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2341.pdf">N2341</a></td>
Richard Smith99247722013-06-17 23:54:23204 <td class="full" align="center">Clang 3.3</td>
Douglas Gregor1f64b592011-10-14 23:21:49205 </tr>
Richard Smith7e34fbd2014-03-14 21:21:24206 <tr>
207 <td>Conditionally-support behavior</td>
208 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1627.pdf">N1627</a></td>
209 <td class="full" align="center">Clang 2.9</td>
210 </tr>
211 <tr>
212 <td>Changing undefined behavior into diagnosable errors</td>
213 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1727.pdf">N1727</a></td>
214 <td class="full" align="center">Clang 2.9</td>
215 </tr>
Douglas Gregor1f64b592011-10-14 23:21:49216 <tr>
217 <td>Delegating constructors</td>
218 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1986.pdf">N1986</a></td>
Benjamin Kramer1c9e1582011-11-05 10:11:36219 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49220 </tr>
221 <tr>
222 <td>Inheriting constructors</td>
223 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2540.htm">N2540</a></td>
Richard Smith99247722013-06-17 23:54:23224 <td class="full" align="center">Clang 3.3</td>
Douglas Gregor1f64b592011-10-14 23:21:49225 </tr>
226 <tr>
227 <td>Explicit conversion operators</td>
228 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2437.pdf">N2437</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37229 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49230 </tr>
231 <tr>
232 <td>New character types</td>
233 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2249.html">N2249</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37234 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49235 </tr>
236 <tr>
237 <td>Unicode string literals</td>
238 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm">N2442</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37239 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49240 </tr>
241 <tr>
242 <td>Raw string literals</td>
243 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm">N2442</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37244 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49245 </tr>
246 <tr>
Richard Smith2a70e652012-03-09 22:27:51247 <td>Universal character names in literals</td>
Douglas Gregor1f64b592011-10-14 23:21:49248 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2170.html">N2170</a></td>
Richard Smith607d6312012-05-23 01:38:11249 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49250 </tr>
251 <tr>
252 <td>User-defined literals</td>
253 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2765.pdf">N2765</a></td>
Richard Smith607d6312012-05-23 01:38:11254 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49255 </tr>
256 <tr>
257 <td>Standard Layout Types</td>
258 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2342.htm">N2342</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37259 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49260 </tr>
261 <tr>
Douglas Gregor7ff1e7e2011-10-28 19:44:09262 <td>Defaulted functions</td>
263 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm">N2346</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37264 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor7ff1e7e2011-10-28 19:44:09265 </tr>
266 <tr>
267 <td>Deleted functions</td>
Douglas Gregor1f64b592011-10-14 23:21:49268 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm">N2346</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37269 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49270 </tr>
271 <tr>
272 <td>Extended friend declarations</td>
273 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1791.pdf">N1791</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37274 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49275 </tr>
276 <tr>
277 <td>Extending <code>sizeof</code></td>
Richard Smith4e837622012-02-24 18:37:14278 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2253.html">N2253</a>
279 <br><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#850">DR850</a></td>
Richard Smith607d6312012-05-23 01:38:11280 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49281 </tr>
282 <tr>
283 <td>Inline namespaces</td>
284 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2535.htm">N2535</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37285 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49286 </tr>
287 <tr>
288 <td>Unrestricted unions</td>
289 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2544.pdf">N2544</a></td>
Richard Smith607d6312012-05-23 01:38:11290 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49291 </tr>
292 <tr>
293 <td>Local and unnamed types as template arguments</td>
294 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm">N2657</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37295 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49296 </tr>
297 <tr>
298 <td>Range-based for</td>
299 <td><a href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2930.html">N2930</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37300 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49301 </tr>
302 <tr>
303 <td>Explicit virtual overrides</td>
304 <td><a href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2928.htm">N2928</a>
Richard Smith4e837622012-02-24 18:37:14305 <br><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3206.htm">N3206</a>
306 <br><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3272.htm">N3272</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37307 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49308 </tr>
309 <tr>
310 <td>Minimal support for garbage collection and reachability-based leak detection</td>
311 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2670.htm">N2670</a></td>
Richard Smithd997cce2014-03-14 20:26:09312 <td class="na" align="center">N/A <a href="#n2670">(2)</a></td>
Douglas Gregor1f64b592011-10-14 23:21:49313 </tr>
314 <tr>
315 <td>Allowing move constructors to throw [noexcept]</td>
David Blaikie50361612011-11-02 15:13:40316 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3050.html">N3050</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37317 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49318 </tr>
319 <tr>
320 <td>Defining move special member functions</td>
David Blaikie50361612011-11-02 15:13:40321 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3053.html">N3053</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37322 <td class="full" align="center">Clang 3.0</td>
Douglas Gregor1f64b592011-10-14 23:21:49323 </tr>
Cedric Venet084381332009-02-14 20:20:19324
Douglas Gregor1f64b592011-10-14 23:21:49325 <tr class="separator">
Benjamin Kramer1c9e1582011-11-05 10:11:36326 <th align="center" colspan="3">Concurrency</th>
Douglas Gregor1f64b592011-10-14 23:21:49327 </tr>
328 <tr>
329 <td>Sequence points</td>
330 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2239.html">N2239</a></td>
Richard Smith99247722013-06-17 23:54:23331 <td class="full" align="center">Clang 3.3</td>
Douglas Gregor1f64b592011-10-14 23:21:49332 </tr>
333 <tr>
334 <td>Atomic operations</td>
335 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2427.html">N2427</a></td>
Richard Smith607d6312012-05-23 01:38:11336 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49337 </tr>
338 <tr>
339 <td>Strong Compare and Exchange</td>
340 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2748.html">N2748</a></td>
Richard Smithd997cce2014-03-14 20:26:09341 <td class="full" align="center">Clang 3.1 <a href="#n2748">(3)</a></td>
Douglas Gregor1f64b592011-10-14 23:21:49342 </tr>
343 <tr>
344 <td>Bidirectional Fences</td>
345 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2752.htm">N2752</a></td>
Richard Smith607d6312012-05-23 01:38:11346 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49347 </tr>
Douglas Gregor6b6e0822010-12-21 05:43:31348
Douglas Gregor1f64b592011-10-14 23:21:49349 <tr>
350 <td>Memory model</td>
351 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2429.htm">N2429</a></td>
Richard Smithbc4fc772013-01-29 04:55:18352 <td class="full" align="center">Clang 3.2</td>
Douglas Gregor1f64b592011-10-14 23:21:49353 </tr>
354 <tr>
355 <td>Data-dependency ordering: atomics and memory model</td>
356 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2664.htm">N2664</a></td>
Richard Smithd997cce2014-03-14 20:26:09357 <td class="full" align="center">Clang 3.2 <a href="#n2664">(4)</a></td>
Douglas Gregor1f64b592011-10-14 23:21:49358 </tr>
359 <tr>
360 <td>Propagating exceptions</td>
361 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2179.html">N2179</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37362 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49363 </tr>
364 <tr>
Douglas Gregor1f64b592011-10-14 23:21:49365 <td>Allow atomics use in signal handlers</td>
366 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2547.htm">N2547</a></td>
Richard Smith607d6312012-05-23 01:38:11367 <td class="full" align="center">Clang 3.1</td>
Douglas Gregor1f64b592011-10-14 23:21:49368 </tr>
369 <tr>
370 <td>Thread-local storage</td>
371 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2659.htm">N2659</a></td>
Richard Smith952923b2016-02-09 22:48:14372 <td class="full" align="center">Clang 3.3 <a href="#n2659">(5)</a></td>
Douglas Gregor1f64b592011-10-14 23:21:49373 </tr>
374 <tr>
375 <td>Dynamic initialization and destruction with concurrency</td>
376 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2660.htm">N2660</a></td>
Richard Smith537a8342013-02-22 09:31:00377 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49378 </tr>
Cedric Venet084381332009-02-14 20:20:19379
Douglas Gregor1f64b592011-10-14 23:21:49380 <tr class="separator">
Richard Smith18743de2012-02-24 18:42:08381 <th align="center" colspan="3">C99 Features in C++11</th>
Douglas Gregor1f64b592011-10-14 23:21:49382 </tr>
383 <tr>
384 <td><code>__func__</code> predefined identifier</td>
385 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2340.htm">N2340</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37386 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49387 </tr>
388 <tr>
389 <td>C99 preprocessor</td>
390 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1653.htm">N1653</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37391 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49392 </tr>
393 <tr>
394 <td><code>long long</code></td>
395 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1811.pdf">N1811</a></td>
Michael J. Spencere73bd642011-11-02 06:29:37396 <td class="full" align="center">Clang 2.9</td>
Douglas Gregor1f64b592011-10-14 23:21:49397 </tr>
398 <tr>
399 <td>Extended integral types</td>
400 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1988.pdf">N1988</a></td>
Richard Smith952923b2016-02-09 22:48:14401 <td class="na" align="center">N/A <a href="#n1988">(6)</a></td>
Douglas Gregor1f64b592011-10-14 23:21:49402 </tr>
Cedric Venet084381332009-02-14 20:20:19403</table>
Richard Smith9deb9d92013-03-12 19:56:09404
405<p>
406<span id="n2761">(1): The <code>[[carries_dependency]]</code> attribute
Richard Smith38546ed2013-03-18 21:57:52407has no effect.</span><br>
Richard Smithd997cce2014-03-14 20:26:09408<span id="n2670">(2): No compiler changes are required for an implementation
409such as Clang that does not provide garbage collection.</span><br>
410<span id="n2748">(3): All compare-exchange operations are emitted as
Richard Smith38546ed2013-03-18 21:57:52411strong compare-exchanges.</span><br>
Richard Smithd997cce2014-03-14 20:26:09412<span id="n2664">(4): <code>memory_order_consume</code> is lowered to
Richard Smith38546ed2013-03-18 21:57:52413<code>memory_order_acquire</code>.</span><br>
Richard Smith952923b2016-02-09 22:48:14414<span id="n2659">(5): <code>thread_local</code> support
415requires a C++ runtime library providing <code>__cxa_thread_atexit</code>, such
416as <a href="http://libcxxabi.llvm.org">libc++abi</a> 3.6 or later,
417or libsupc++ 4.8 or later.</span><br>
418<span id="n1988">(6): No compiler changes are required for an implementation
Richard Smithd997cce2014-03-14 20:26:09419such as Clang that does not provide any extended integer types.
420<code>__int128</code> is not treated as an extended integer type,
421because changing <code>intmax_t</code> would be an ABI-incompatible
422change.</span>
Richard Smith9deb9d92013-03-12 19:56:09423</p>
Richard Smithe2bf8782016-09-28 21:01:37424</details>
Richard Smith9deb9d92013-03-12 19:56:09425
Richard Smith20f37672014-08-31 04:17:48426<h2 id="cxx14">C++14 implementation status</h2>
Richard Smith91725202013-04-19 17:27:48427
Richard Smith01881102016-09-28 19:22:36428<p>Clang 3.4 and later implement all of the <a
429 href="http://www.iso.org/iso/catalogue_detail.htm?csnumber=64029">ISO
Richard Smithe2bf8782016-09-28 21:01:37430 C++ 2014 standard</a>.
Richard Smith91725202013-04-19 17:27:48431
Richard Smith20f37672014-08-31 04:17:48432<p>You can use Clang in C++14 mode with the <code>-std=c++14</code> option
Richard Smith1b886322014-08-31 04:18:54433(use <code>-std=c++1y</code> in Clang 3.4 and earlier).</p>
Richard Smith4cf9a1e2013-04-20 13:22:50434
Richard Smithe2bf8782016-09-28 21:01:37435<details>
436<summary>List of features and minimum Clang version with support</summary>
437
Richard Smith91725202013-04-19 17:27:48438<table width="689" border="1" cellspacing="0">
439 <tr>
440 <th>Language Feature</th>
Richard Smith20f37672014-08-31 04:17:48441 <th>C++14 Proposal</th>
Richard Smith91725202013-04-19 17:27:48442 <th>Available in Clang?</th>
443 </tr>
444 <tr>
445 <td>Tweak to certain C++ contextual conversions</td>
446 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3323.pdf">N3323</a></td>
Richard Smith7fe89622014-02-03 06:58:08447 <td class="full" align="center">Clang 3.4</td>
Richard Smith91725202013-04-19 17:27:48448 </tr>
449 <tr>
Richard Smith0fa4fce2013-04-20 12:44:32450 <td>Binary literals</td>
Richard Smith91725202013-04-19 17:27:48451 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3472.pdf">N3472</a></td>
Benjamin Kramereb0ad452015-02-09 11:48:43452 <td class="full" align="center">Clang 2.9</td>
Richard Smith91725202013-04-19 17:27:48453 </tr>
454 <tr>
Richard Smith74aeef52013-04-26 16:15:35455 <td>decltype(auto)</td>
Richard Smithf2f6e1142013-05-09 18:53:17456 <td rowspan=2 style="vertical-align:middle"><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3638.html">N3638</a></td>
Richard Smith99247722013-06-17 23:54:23457 <td class="full" align="center">Clang 3.3</td>
Richard Smith74aeef52013-04-26 16:15:35458 </tr>
459 <tr>
Richard Smith5db8b282013-04-20 12:47:36460 <td>Return type deduction for normal functions</td>
Richard Smith7fe89622014-02-03 06:58:08461 <td class="full" align="center">Clang 3.4</td>
Richard Smith5db8b282013-04-20 12:47:36462 </tr>
Richard Smith0fa4fce2013-04-20 12:44:32463 <tr>
Richard Smith5db8b282013-04-20 12:47:36464 <td>Initialized lambda captures</td>
Richard Smithf2f6e1142013-05-09 18:53:17465 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3648.html">N3648</a></td>
Richard Smith7fe89622014-02-03 06:58:08466 <td class="full" align="center">Clang 3.4</td>
Richard Smith91725202013-04-19 17:27:48467 </tr>
468 <tr>
Richard Smith7898d7b2013-04-20 12:58:57469 <td>Generic lambdas</td>
Richard Smithf2f6e1142013-05-09 18:53:17470 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3649.html">N3649</a></td>
Richard Smith7fe89622014-02-03 06:58:08471 <td class="full" align="center">Clang 3.4</td>
Richard Smith91725202013-04-19 17:27:48472 </tr>
473 <tr>
Richard Smith7898d7b2013-04-20 12:58:57474 <td>Variable templates</td>
Richard Smithf2f6e1142013-05-09 18:53:17475 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3651.pdf">N3651</a></td>
Richard Smith7fe89622014-02-03 06:58:08476 <td class="full" align="center">Clang 3.4</td>
Richard Smith91725202013-04-19 17:27:48477 </tr>
478 <tr>
Richard Smith7feda2f2013-04-20 12:49:36479 <td>Relaxing requirements on constexpr functions</td>
Richard Smithf2f6e1142013-05-09 18:53:17480 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3652.html">N3652</a></td>
Richard Smith7fe89622014-02-03 06:58:08481 <td class="full" align="center">Clang 3.4</td>
Richard Smith91725202013-04-19 17:27:48482 </tr>
483 <tr>
Richard Smith5db8b282013-04-20 12:47:36484 <td>Member initializers and aggregates</td>
Richard Smithf2f6e1142013-05-09 18:53:17485 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3653.html">N3653</a></td>
Richard Smith99247722013-06-17 23:54:23486 <td class="full" align="center">Clang 3.3</td>
Richard Smith91725202013-04-19 17:27:48487 </tr>
Richard Smith91725202013-04-19 17:27:48488 <tr>
Richard Smithd3a73862013-04-20 12:57:49489 <td>Clarifying memory allocation</td>
Richard Smithf2f6e1142013-05-09 18:53:17490 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3664.html">N3664</a></td>
Richard Smith7fe89622014-02-03 06:58:08491 <td class="full" align="center">Clang 3.4</td>
Richard Smith91725202013-04-19 17:27:48492 </tr>
Richard Smith3ca005b2013-09-27 19:11:33493 <tr>
494 <td><tt>[[deprecated]]</tt> attribute</td>
495 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3760.html">N3760</a></td>
Richard Smith7fe89622014-02-03 06:58:08496 <td class="full" align="center">Clang 3.4</td>
Richard Smith3ca005b2013-09-27 19:11:33497 </tr>
498 <tr>
499 <td>Single quotation mark as digit separator</td>
Richard Smith2d1d3ca2013-11-05 08:27:00500 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3781.pdf">N3781</a></td>
Richard Smith7fe89622014-02-03 06:58:08501 <td class="full" align="center">Clang 3.4</td>
Richard Smith3ca005b2013-09-27 19:11:33502 </tr>
503 <tr>
Benjamin Kramer8ba47d02013-09-27 19:35:09504 <td>C++ Sized Deallocation</td>
Richard Smith2d1d3ca2013-11-05 08:27:00505 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3778.html">N3778</a></td>
Richard Smith952923b2016-02-09 22:48:14506 <td class="full" align="center">Clang 3.4 <a href="#n3778">(7)</a></td>
Richard Smith3ca005b2013-09-27 19:11:33507 </tr>
Richard Smith91725202013-04-19 17:27:48508</table>
Reid Kleckner7ffc3fb2015-03-20 00:31:07509
Larisse Voufoee3c1b22015-02-19 04:34:13510<p>
Richard Smith952923b2016-02-09 22:48:14511<span id="n3778">(7): In Clang 3.7 and later, sized deallocation is only enabled
Reid Kleckner7ffc3fb2015-03-20 00:31:07512if the user passes the <code>-fsized-deallocation</code> flag. The user must
513supply definitions of the sized deallocation functions, either by providing them
514explicitly or by using a C++ standard library that does. <code>libstdc++</code>
515added these functions in version 5.0, and <code>libc++</code> added them in
516version 3.7.
Larisse Voufoee3c1b22015-02-19 04:34:13517</span>
518</p>
Richard Smithe2bf8782016-09-28 21:01:37519</details>
Richard Smith91725202013-04-19 17:27:48520
Richard Smith76b9f232013-11-07 06:41:26521<h2 id="cxx17">C++1z implementation status</h2>
522
Richard Smith952923b2016-02-09 22:48:14523<p>Clang has <b>experimental</b> support for some proposed features of
524the C++ standard following C++14, provisionally named C++1z.
Richard Smithe2bf8782016-09-28 21:01:37525Note that support for these features may change or be removed without notice,
526as the draft C++1z standard evolves.
Richard Smithcf31c6b2014-06-20 20:33:10527
Richard Smith76b9f232013-11-07 06:41:26528<p>You can use Clang in C++1z mode with the <code>-std=c++1z</code> option.</p>
Richard Smithcf31c6b2014-06-20 20:33:10529
Richard Smithe2bf8782016-09-28 21:01:37530<details open>
531<summary>List of features and minimum Clang version with support</summary>
532
Richard Smithcf31c6b2014-06-20 20:33:10533<table width="689" border="1" cellspacing="0">
534 <tr>
535 <th>Language Feature</th>
536 <th>C++1z Proposal</th>
537 <th>Available in Clang?</th>
538 </tr>
Richard Smith5a20d7e2016-11-11 22:48:43539 <!-- Issaquah 2014 papers -->
Richard Smithcf31c6b2014-06-20 20:33:10540 <tr>
541 <td><tt>static_assert</tt> with no message</td>
542 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3928.pdf">N3928</a></td>
Richard Smithee0a49c2014-09-11 17:30:32543 <td class="full" align="center">Clang 3.5</td>
Richard Smithcf31c6b2014-06-20 20:33:10544 </tr>
Richard Smith0f0af192014-11-08 05:07:16545 <!-- Rapperswil papers -->
Richard Smithcf31c6b2014-06-20 20:33:10546 <tr>
547 <td>Disabling trigraph expansion by default</td>
Richard Smith410cc892014-11-26 03:26:53548 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4086.html">N4086</a></td>
Richard Smithee0a49c2014-09-11 17:30:32549 <td class="full" align="center">Clang 3.5</td>
Richard Smithcf31c6b2014-06-20 20:33:10550 </tr>
Richard Smith83d3f152014-11-27 01:54:27551 <!--
Richard Smithcf31c6b2014-06-20 20:33:10552 <tr>
Richard Smith83d3f152014-11-27 01:54:27553 <td rowspan="2">Terse range-based for loops (removed from C++1z)</td>
554 <td rowspan="2"><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3994.htm">N3994</a></td>
555 <td class="none" align="center">Clang 3.5: Yes</td>
Richard Smithcf31c6b2014-06-20 20:33:10556 </tr>
557 <tr>
Richard Smith83d3f152014-11-27 01:54:27558 <td class="svn" align="center">SVN: No</td>
559 </tr>
560 -->
561 <tr>
Richard Smithcf31c6b2014-06-20 20:33:10562 <td><tt>typename</tt> in a template template parameter</td>
563 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4051.html">N4051</a></td>
Richard Smithee0a49c2014-09-11 17:30:32564 <td class="full" align="center">Clang 3.5</td>
Richard Smithcf31c6b2014-06-20 20:33:10565 </tr>
Richard Smith410cc892014-11-26 03:26:53566 <tr>
567 <td>New <tt>auto</tt> rules for direct-list-initialization
568 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3922.html">N3922</a></td>
Richard Smith25dde972016-03-20 10:37:12569 <td class="full" align="center">Clang 3.8 <a href="#n3922">(8)</a></td>
Richard Smith410cc892014-11-26 03:26:53570 </tr>
Richard Smith0f0af192014-11-08 05:07:16571 <!-- Urbana papers -->
572 <tr>
Richard Smithf006a962016-03-04 21:01:14573 <td rowspan="2">Fold expressions</td>
Benjamin Kramereb0ad452015-02-09 11:48:43574 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4295.html">N4295</a></td>
Richard Smith42b10572015-11-11 01:36:17575 <td class="full" align="center">Clang 3.6</td>
Richard Smith3e3a7052014-11-08 06:08:42576 </tr>
Richard Smithf006a962016-03-04 21:01:14577 <tr> <!-- from Jacksonville -->
578 <td><a href="http://wg21.link/p0036r0">P0036R0</a></td>
Richard Smithb1a268a2016-08-15 02:47:23579 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14580 </tr>
Richard Smith3e3a7052014-11-08 06:08:42581 <tr>
582 <td><tt>u8</tt> character literals</td>
Benjamin Kramereb0ad452015-02-09 11:48:43583 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4267.html">N4267</a></td>
Richard Smith42b10572015-11-11 01:36:17584 <td class="full" align="center">Clang 3.6</td>
Richard Smith0f0af192014-11-08 05:07:16585 </tr>
Richard Smith13307f52014-11-08 05:37:34586 <tr>
587 <td>Nested namespace definition</td>
Benjamin Kramereb0ad452015-02-09 11:48:43588 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4230.html">N4230</a></td>
Richard Smith42b10572015-11-11 01:36:17589 <td class="full" align="center">Clang 3.6</td>
Richard Smith13307f52014-11-08 05:37:34590 </tr>
Aaron Ballman730476b2014-11-08 15:33:35591 <tr>
592 <td>Attributes for namespaces and enumerators</td>
Benjamin Kramereb0ad452015-02-09 11:48:43593 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4266.html">N4266</a></td>
Richard Smith42b10572015-11-11 01:36:17594 <td class="full" align="center">Clang 3.6</td>
Aaron Ballman730476b2014-11-08 15:33:35595 </tr>
Richard Smith410cc892014-11-26 03:26:53596 <tr>
597 <td>Allow constant evaluation for all non-type template arguments</td>
Benjamin Kramereb0ad452015-02-09 11:48:43598 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4268.html">N4268</a></td>
Richard Smith42b10572015-11-11 01:36:17599 <td class="full" align="center">Clang 3.6</td>
Richard Smith410cc892014-11-26 03:26:53600 </tr>
Richard Smith894835f2015-11-05 21:41:06601 <!-- Kona papers -->
602 <tr>
603 <td>Remove deprecated <tt>register</tt> storage class</td>
604 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0001r1.html">P0001R1</a></td>
Richard Smith25dde972016-03-20 10:37:12605 <td class="full" align="center">Clang 3.8</td>
Richard Smith894835f2015-11-05 21:41:06606 </tr>
607 <tr>
608 <td>Remove deprecated <tt>bool</tt> increment</td>
609 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0002r1.html">P0002R1</a></td>
Richard Smith25dde972016-03-20 10:37:12610 <td class="full" align="center">Clang 3.8</td>
Richard Smith894835f2015-11-05 21:41:06611 </tr>
612 <tr>
613 <td>Make exception specifications part of the type system</td>
614 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0012r1.html">P0012R1</a></td>
Richard Smith6e5610f2016-11-01 01:34:46615 <td class="svn" align="center">SVN <a href="#p0012">(9)</a></td>
Richard Smith894835f2015-11-05 21:41:06616 </tr>
617 <tr>
Richard Smith4a0cd892015-11-26 02:16:37618 <td><tt>__has_include</tt> in preprocessor conditionals</td>
Richard Smith894835f2015-11-05 21:41:06619 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0061.html">P0061R1</a></td>
620 <td class="full" align="center">Yes</td>
621 </tr>
Richard Smith952923b2016-02-09 22:48:14622 <tr>
623 <td>New specification for inheriting constructors (<a href="cxx_dr_status.html#1941">DR1941</a> et al)</td>
624 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0136r1.html">P0136R1</a></td>
Richard Smith6e5610f2016-11-01 01:34:46625 <td class="full" align="center">Clang 3.9 <a href="#p0136">(10)</a></td>
Richard Smith952923b2016-02-09 22:48:14626 </tr>
Richard Smithf006a962016-03-04 21:01:14627 <!-- Jacksonville papers -->
628 <tr>
629 <td><tt>[[fallthrough]]</tt> attribute</td>
630 <td><a href="http://wg21.link/p0188r1">P0188R1</a></td>
Richard Smithb1a268a2016-08-15 02:47:23631 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14632 </tr>
633 <tr>
634 <td><tt>[[nodiscard]]</tt> attribute</td>
635 <td><a href="http://wg21.link/p0189r1">P0189R1</a></td>
Richard Smithb1a268a2016-08-15 02:47:23636 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14637 </tr>
638 <tr>
639 <td><tt>[[maybe_unused]]</tt> attribute</td>
640 <td><a href="http://wg21.link/p0212r1">P0212R1</a></td>
Richard Smithb1a268a2016-08-15 02:47:23641 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14642 </tr>
643 <tr>
644 <td>Aggregate initialization of classes with base classes</td>
645 <td><a href="http://wg21.link/p0017r1">P0017R1</a></td>
Richard Smithb1a268a2016-08-15 02:47:23646 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14647 </tr>
648 <tr>
649 <td><tt>constexpr</tt> lambda expressions</td>
650 <td><a href="http://wg21.link/p0170r1">P0170R1</a></td>
651 <td class="none" align="center">No</td>
652 </tr>
653 <tr>
654 <td>Differing <tt>begin</tt> and <tt>end</tt> types in range-based <tt>for</tt></td>
655 <td><a href="http://wg21.link/p0184r0">P0184R0</a></td>
Richard Smithb1a268a2016-08-15 02:47:23656 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14657 </tr>
658 <tr>
659 <td>Lambda capture of <tt>*this</tt></td>
660 <td><a href="http://wg21.link/p0018r3">P0018R3</a></td>
Richard Smithb1a268a2016-08-15 02:47:23661 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14662 </tr>
663 <tr>
664 <td>Direct-list-initialization of <tt>enum</tt>s</td>
665 <td><a href="http://wg21.link/p0138r2">P0138R2</a></td>
Richard Smithb1a268a2016-08-15 02:47:23666 <td class="full" align="center">Clang 3.9</td>
Richard Smithf006a962016-03-04 21:01:14667 </tr>
668 <tr>
669 <td>Hexadecimal floating-point literals</td>
670 <td><a href="http://wg21.link/p0245r1">P0245R1</a></td>
671 <td class="full" align="center">Yes</td>
672 </tr>
Richard Smithb130fe72016-06-23 19:16:49673 <!-- Oulu papers -->
Richard Smith74f56e72016-06-24 11:20:31674 <tr>
675 <td>Using attribute namespaces without repetition</td>
676 <td><a href="http://wg21.link/p0028r4">P0028R4</a></td>
Richard Smithb1a268a2016-08-15 02:47:23677 <td class="full" align="center">Clang 3.9</td>
Richard Smith74f56e72016-06-24 11:20:31678 </tr>
Richard Smith74f56e72016-06-24 11:20:31679 <tr>
680 <td>Dynamic memory allocation for over-aligned data</td>
681 <td><a href="http://wg21.link/p0035r4">P0035R4</a></td>
Richard Smithf5d8a752016-10-10 06:55:42682 <td class="svn" align="center">SVN</td>
Richard Smith74f56e72016-06-24 11:20:31683 </tr>
Richard Smith74f56e72016-06-24 11:20:31684 <tr>
685 <td>Template argument deduction for class templates</td>
686 <td><a href="http://wg21.link/p0091r3">P0091R3</a></td>
687 <td class="none" align="center">No</td>
688 </tr>
689 <tr>
Richard Smith3a2dc6f02016-06-24 12:21:30690 <td>Non-type template parameters with <tt>auto</tt> type</td>
Richard Smith74f56e72016-06-24 11:20:31691 <td><a href="http://wg21.link/p0127r2">P0127R2</a></td>
Richard Smith27143d82016-09-29 00:08:05692 <td class="svn" align="center">SVN</td>
Richard Smith74f56e72016-06-24 11:20:31693 </tr>
694 <tr>
695 <td>Guaranteed copy elision</td>
696 <td><a href="http://wg21.link/p0135r1">P0135R1</a></td>
697 <td class="none" align="center">No</td>
698 </tr>
Richard Smith74f56e72016-06-24 11:20:31699 <tr>
Richard Smith63497c62016-07-14 00:14:59700 <td rowspan=2>Stricter expression evaluation order</td>
Richard Smith74f56e72016-06-24 11:20:31701 <td><a href="http://wg21.link/p0145r3">P0145R3</a></td>
Richard Smith6e5610f2016-11-01 01:34:46702 <td class="svn" align="center" rowspan=2>SVN <a href="#p0145">(11)</a></td>
Richard Smith63497c62016-07-14 00:14:59703 </tr>
704 <tr>
705 <td><a href="http://wg21.link/p0400r0">P0400R0</a></td>
Richard Smith74f56e72016-06-24 11:20:31706 </tr>
707 <tr>
Richard Smith74f56e72016-06-24 11:20:31708 <td>Requirement to ignore unknown attributes</td>
709 <td><a href="http://wg21.link/p0283r2">P0283R2</a></td>
710 <td class="full" align="center">Yes</td>
711 </tr>
Richard Smithb130fe72016-06-23 19:16:49712 <tr>
713 <td><tt>constexpr</tt> <em>if-statement</em>s</td>
714 <td><a href="http://wg21.link/p0292r2">P0292R2</a></td>
Richard Smithb1a268a2016-08-15 02:47:23715 <td class="full" align="center">Clang 3.9</td>
Richard Smithb130fe72016-06-23 19:16:49716 </tr>
Richard Smith74f56e72016-06-24 11:20:31717 <tr>
718 <td>Inline variables</td>
719 <td><a href="http://wg21.link/p0386r2">P0386R2</a></td>
Richard Smithb1a268a2016-08-15 02:47:23720 <td class="full" align="center">Clang 3.9</td>
Richard Smith74f56e72016-06-24 11:20:31721 </tr>
Richard Smith74f56e72016-06-24 11:20:31722 <tr>
723 <td>Structured bindings</td>
724 <td><a href="http://wg21.link/p0217r3">P0217R3</a></td>
Richard Smith6ec6b242016-08-15 02:37:43725 <td class="partial" align="center">Partial</td>
Richard Smith6294a762016-10-22 01:35:34726 <!-- We don't implement structured bindings of arrays yet, anticipating
727 this being removed from the working draft -->
Richard Smith74f56e72016-06-24 11:20:31728 </tr>
729 <tr>
Richard Smith90ea9eb2016-06-24 14:23:32730 <td>Separate variable and condition for <tt>if</tt> and <tt>switch</tt></td>
Richard Smith74f56e72016-06-24 11:20:31731 <td><a href="http://wg21.link/p0305r1">P0305R1</a></td>
Richard Smithb1a268a2016-08-15 02:47:23732 <td class="full" align="center">Clang 3.9</td>
Richard Smith74f56e72016-06-24 11:20:31733 </tr>
Richard Smith5a20d7e2016-11-11 22:48:43734 <!-- Issaquah 2016 papers -->
Richard Smith5a20d7e2016-11-11 22:48:43735 <tr>
736 <td>Matching template template parameters to compatible arguments</td>
737 <td><a href="http://wg21.link/p0522r0">P0522R0</a></td>
Richard Smithe0c75002016-11-11 23:46:25738 <td class="none" align="center">No <a href="#p0522">(12)</a></td>
Richard Smith5a20d7e2016-11-11 22:48:43739 </tr>
Richard Smithe0c75002016-11-11 23:46:25740 <!--
Richard Smith5a20d7e2016-11-11 22:48:43741 <tr>
742 <td>Removing deprecated dynamic exception specifications</td>
743 <td><a href="http://wg21.link/p0003r5">P0003R5</a></td>
744 <td class="none" align="center">No</td>
745 </tr>
746 <tr>
747 <td>Pack expansions in <em>using-declarations</em></td>
748 <td><a href="http://wg21.link/p0195r2">P0195R2</a></td>
749 <td class="none" align="center">No</td>
750 </tr>
751 <tr>
752 <td>A <tt>byte</tt> type definition</td>
753 <td><a href="http://wg21.link/p0298r2">P0298R2</a></td>
754 <td class="none" align="center">No</td>
755 </tr>
756 -->
Richard Smithcf31c6b2014-06-20 20:33:10757</table>
Richard Smith76b9f232013-11-07 06:41:26758
Richard Smith42b10572015-11-11 01:36:17759<p>
Richard Smith952923b2016-02-09 22:48:14760<span id="n3922">(8): This is a backwards-incompatible change that is applied to
Richard Smith42b10572015-11-11 01:36:17761all language versions that allow type deduction from <tt>auto</tt>
762(per the request of the C++ committee).
763In Clang 3.7, a warning is emitted for all cases that would change meaning.
Richard Smith4a93c592016-06-28 20:37:43764</span><br>
Richard Smith6e5610f2016-11-01 01:34:46765<span id="p0012">(9): Support for throwing a noexcept function pointer and
766catching it as a non-noexcept function pointer requires an ABI library with
767C++17 support. Currently, only libc++abi 4.0 provides this support, so this
768portion of the feature is disabled by default. If you are using a sufficiently
769recent ABI library, you can enable support for this feature with the
770<code>-Xclang -mqualified-function-type-info</code> flag. This flag is likely
771to be removed or replaced in future Clang releases.
772</span><br>
773<span id="p0136">(10): This is the resolution to a Defect Report, so is applied
Richard Smith5179eb72016-06-28 19:03:57774to all language versions supporting inheriting constructors.
Richard Smith762672a2016-09-28 19:09:10775</span><br>
Richard Smith6e5610f2016-11-01 01:34:46776<span id="p0145">(11): Under the MS ABI, function parameters are destroyed from
Richard Smitha560ccf2016-09-29 21:30:12777left to right in the callee. As a result, function parameters in calls to
Richard Smith762672a2016-09-28 19:09:10778<tt>operator&lt;&lt;</tt>, <tt>operator&gt;&gt;</tt>, <tt>operator-&gt;*</tt>,
779<tt>operator&amp;&amp;</tt>, <tt>operator||</tt>, and <tt>operator,</tt>
Richard Smitha560ccf2016-09-29 21:30:12780functions using expression syntax are no longer guaranteed to be destroyed in
781reverse construction order in that ABI.
Richard Smithe0c75002016-11-11 23:46:25782</span><br>
783<span id="p0522">(12): This is the resolution to a Defect Report, so will be
784applied to all language versions.
Richard Smith5179eb72016-06-28 19:03:57785</span>
Richard Smith42b10572015-11-11 01:36:17786</p>
Richard Smithe2bf8782016-09-28 21:01:37787</details>
Richard Smith42b10572015-11-11 01:36:17788
Richard Smith91e474f2013-11-27 22:58:16789<h2 id="ts">Technical specifications and standing documents</h2>
790
791<p>ISO C++ also publishes a number of documents describing additional language
Richard Smithe2bf8782016-09-28 21:01:37792and library features that are not part of standard C++.</p>
793
794<details open>
795<summary>List of features and minimum Clang version with support</summary>
Richard Smith91e474f2013-11-27 22:58:16796
797<table width="689" border="1" cellspacing="0">
798 <tr>
799 <th>Document</th>
800 <th>Latest draft</th>
Richard Smithe2bf8782016-09-28 21:01:37801 <th>Compiler flag</th>
Richard Smith91e474f2013-11-27 22:58:16802 <th>Available in Clang?</th>
803 </tr>
804 <tr>
Richard Smith6e4bedc2016-09-28 20:42:56805 <td rowspan="3">SD-6: SG10 feature test recommendations</td>
806 <td rowspan="3"><a href="http://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations">SD-6</a></td>
Richard Smithe2bf8782016-09-28 21:01:37807 <td rowspan="3">N/A</td>
Richard Smith38af8562014-11-12 21:16:38808 <td class="full" align="center">
809 Clang 3.4 (<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3745">N3745</a>)</br>
810 </td>
811 </tr>
812 <tr>
Richard Smith42b10572015-11-11 01:36:17813 <td class="full" align="center">
Benjamin Kramereb0ad452015-02-09 11:48:43814 Clang 3.6 (<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4200">N4200</a>)</a>
Richard Smith38af8562014-11-12 21:16:38815 </td>
Richard Smith91e474f2013-11-27 22:58:16816 </tr>
Richard Smithb02043c2016-09-28 19:44:50817 <tr>
818 <td class="svn" align="center">
Richard Smith38d91d42016-09-28 20:26:06819 SVN (<a href="http://wg21.link/p0096r3">P0096R3</a>)</a>
Richard Smithb02043c2016-09-28 19:44:50820 </td>
821 </tr>
Richard Smith894835f2015-11-05 21:41:06822 <!-- FIXME: Implement latest recommendations.
Richard Smith91e474f2013-11-27 22:58:16823 <tr>
Richard Smith894835f2015-11-05 21:41:06824 <td class="svn" align="center">
Richard Smithb02043c2016-09-28 19:44:50825 SVN (<a href="http://wg21.link/p0096r3">P0096R3</a>)</a>
Richard Smith894835f2015-11-05 21:41:06826 </td>
827 </tr>
828 -->
829 <!-- No compiler support is known to be needed for:
830 * Concurrency TS
831 * Parallelism TS
832 * Ranges TS
833 * Networking TS
834 * File System TS
835 -->
836 <tr>
837 <td>[TS] Concepts</td>
838 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0121r0.pdf">P0121R0</a></td>
Richard Smithe2bf8782016-09-28 21:01:37839 <td></td>
840 <td class="none" align="center">WIP</td>
841 </tr>
842 <tr>
843 <td>[DRAFT TS] Coroutines</td>
Richard Smith5a20d7e2016-11-11 22:48:43844 <td><a href="http://wg21.link/p0057r7">P0057R7</a></td>
Richard Smithe2bf8782016-09-28 21:01:37845 <td></td>
846 <td class="none" align="center">WIP</td>
Richard Smith91e474f2013-11-27 22:58:16847 </tr>
Richard Smith3a0ed872014-02-15 00:29:00848 <tr>
Richard Smith894835f2015-11-05 21:41:06849 <td>[TS] Library Fundamentals, Version 1 (invocation type traits)</td>
Richard Smithea260412015-11-05 22:21:52850 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html">N4480</a></td>
Richard Smithe2bf8782016-09-28 21:01:37851 <td>N/A</td>
Richard Smith3a0ed872014-02-15 00:29:00852 <td class="none" align="center">No</td>
853 </tr>
854 <tr>
Richard Smith894835f2015-11-05 21:41:06855 <td>[DRAFT TS] Library Fundamentals, Version 2 (<tt>source_location</tt>)</td>
Richard Smithe2bf8782016-09-28 21:01:37856 <td><a href="http://wg21.link/n4600">N4600</a></td>
857 <td>N/A</td>
Richard Smith894835f2015-11-05 21:41:06858 <td class="none" align="center">No</td>
859 </tr>
860 <tr>
Richard Smithe2bf8782016-09-28 21:01:37861 <td>[DRAFT TS] Modules</td>
862 <td><a href="http://wg21.link/n4592">N4592</a></td>
863 <td><tt>-fmodules-ts</tt></td>
864 <td class="none" align="center">WIP</td>
Richard Smithf006a962016-03-04 21:01:14865 </tr>
866 <tr>
Richard Smith894835f2015-11-05 21:41:06867 <td>[TS] Transactional Memory</td>
Richard Smith85864d52015-11-26 02:23:21868 <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4514.pdf">N4514</a></td>
Richard Smithe2bf8782016-09-28 21:01:37869 <td></td>
Richard Smith3a0ed872014-02-15 00:29:00870 <td class="none" align="center">No</td>
871 </tr>
Richard Smith91e474f2013-11-27 22:58:16872</table>
Richard Smithe2bf8782016-09-28 21:01:37873</details>
Richard Smith91e474f2013-11-27 22:58:16874
Cedric Venet084381332009-02-14 20:20:19875</div>
876</body>
877</html>