www/cxx1z_status.html

   1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
   2           "http://www.w3.org/TR/html4/strict.dtd">
   3 <!-- Material used from: HTML 4.01 specs: http://www.w3.org/TR/html401/ -->
   4 <html>
   5 <head>
   6   <META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
   7   <title>libc++ C++1Z Status</title>
   8   <link type="text/css" rel="stylesheet" href="menu.css">
   9   <link type="text/css" rel="stylesheet" href="content.css">
  10 </head>
  11
  12 <body>
  13 <div id="menu">
  14   <div>
  15     <a href="http://llvm.org/">LLVM Home</a>
  16   </div>
  17
  18   <div class="submenu">
  19     <label>libc++ Info</label>
  20     <a href="/index.html">About</a>
  21   </div>
  22
  23   <div class="submenu">
  24     <label>Quick Links</label>
  25     <a href="http://lists.llvm.org/mailman/listinfo/cfe-dev">cfe-dev</a>
  26     <a href="http://lists.llvm.org/mailman/listinfo/cfe-commits">cfe-commits</a>
  27     <a href="http://llvm.org/bugs/">Bug Reports</a>
  28     <a href="http://llvm.org/svn/llvm-project/libcxx/trunk/">Browse SVN</a>
  29     <a href="http://llvm.org/viewvc/llvm-project/libcxx/trunk/">Browse ViewVC</a>
  30   </div>
  31 </div>
  32
  33 <div id="content">
  34   <!--*********************************************************************-->
  35   <h1>libc++ C++1z Status</h1>
  36   <!--*********************************************************************-->
  37
  38   <p>In November 2014, the C++ standard committee created a draft for the next version of the C++ standard, known here as "C++1z" (probably to be C++17)</p>
  39   <p>This page shows the status of libc++; the status of clang's support of the language features is <a href="http://clang.llvm.org/cxx_status.html#cxx17">here</a>.</p>
  40
  41   <p>The groups that have contributed papers:
  42   <ul>
  43     <li>LWG - Library working group</li>
  44     <li>CWG - Core Language Working group</li>
  45     <li>SG1 - Study group #1 (Concurrency working group)</li>
  46   </ul>
  47   </p>
  48
  49   <h3>Paper Status</h3>
  50   <table id="papers" border="1">
  51         <tr><th>Paper #</th><th>Group</th><th>Paper Name</th><th>Meeting</th><th>Status</th><th>First released version</th></tr>
  52 <!--
  53         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3346.pdf">3346</a></td><td>LWG</td><td>Terminology for Container Element Requirements - Rev 1</td><td>Kona</td><td>Complete</td><td>3.4</td></tr>
  54 -->
  55         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3911">N3911</a></td><td>LWG</td></td><td>TransformationTrait Alias <code>void_t</code>.</td><td>Urbana</td><td>Complete</td><td>3.6</td></tr>
  56         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4089">N4089</a></td><td>LWG</td></td><td>Safe conversions in <code>unique_ptr&lt;T[]&gt;</code>.</td><td>Urbana</td><td></td><td></td></tr>
  57         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4169">N4169</a></td><td>LWG</td></td><td>A proposal to add invoke function template</td><td>Urbana</td><td>Complete</td><td>3.7</td></tr>
  58         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4190">N4190</a></td></td><td>LWG</td><td>Removing auto_ptr, random_shuffle(), And Old <functional> Stuff.</td><td>Urbana</td><td></td><td></td></tr>
  59         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4258">N4258</a></td><td>LWG</td></td><td>Cleaning-up noexcept in the Library.</td><td>Urbana</td><td>In progress</td><td>3.7</td></tr>
  60         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4259">N4259</a></td><td>CWG</td></td><td>Wording for std::uncaught_exceptions</td><td>Urbana</td><td>Complete</td><td>3.7</td></tr>
  61         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4277">N4277</a></td><td>LWG</td></td><td>TriviallyCopyable <code>reference_wrapper</code>.</td><td>Urbana</td><td>Complete</td><td>3.2</td></tr>
  62         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4279">N4279</a></td><td>LWG</td></td><td>Improved insertion interface for unique-key maps.</td><td>Urbana</td><td>Complete</td><td>3.7</td></tr>
  63         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4280">N4280</a></td><td>LWG</td></td><td>Non-member size() and more</td><td>Urbana</td><td>Complete</td><td>3.6</td></tr>
  64         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4284">N4284</a></td><td>LWG</td></td><td>Contiguous Iterators.</td><td>Urbana</td><td>Complete</td><td>3.6</td></tr>
  65         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4285">N4285</a></td><td>CWG</td></td><td>Cleanup for exception-specification and throw-expression.</td><td>Urbana</td><td></td><td></td></tr>
  66         <tr><td></td><td></td><td></td><td></td><td></td><td></td></tr>
  67         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4387">N4387</a></td><td>LWG</td></td><td>improving pair and tuple</td><td>Lenexa</td><td></td><td></td></tr>
  68         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4389">N4389</a></td><td>LWG</td></td><td>bool_constant</td><td>Lenexa</td><td>Complete</td><td>3.7</td></tr>
  69         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4508">N4508</a></td><td>LWG</td></td><td>shared_mutex for C++17</td><td>Lenexa</td><td>Complete</td><td>3.7</td></tr>
  70         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4366">N4366</a></td><td>LWG</td></td><td>LWG 2228 missing SFINAE rule</td><td>Lenexa</td><td>Complete</td><td>3.1</td></tr>
  71         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4510">N4510</a></td><td>LWG</td></td><td>Minimal incomplete type support for standard containers, revision 4</td><td>Lenexa</td><td>Complete</td><td>3.6</td></tr>
  72 <!--    <tr><td></td><td></td><td></td><td></td><td></td><td></td></tr> -->
  73   </table>
  74
  75   <h3>Library Working group Issues Status</h3>
  76 <!--   <I>Note: "NAD" means that the issue was deemed "Not a defect"</I> -->
  77   <table id="issues" border="1">
  78         <tr><th>Issue #</th><th>Issue Name</th><th>Meeting</th><th>Status</th></tr>
  79         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2016">2016</a></td><td>Allocators must be no-throw swappable</td><td>Urbana</td><td></td></tr>
  80         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2376">2118</td><td><code>unique_ptr</code> for array does not support cv qualification conversion of actual argument</td><td>Urbana</td><td>Will be resolved by N4089</td></tr>
  81         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2170">2170</a></td><td>Aggregates cannot be <code>DefaultConstructible</code></td><td>Urbana</td><td>Complete</td></tr>
  82         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2308">2308</td><td>Clarify container destructor requirements w.r.t. <code>std::array</code></td><td>Urbana</td><td>Complete</td></tr>
  83         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2340">2340</a></td><td>Replacement allocation functions declared as inline</td><td>Urbana</td><td>Complete</td></tr>
  84         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2354">2354</a></td><td>Unnecessary copying when inserting into maps with braced-init syntax</td><td>Urbana</td><td></td></tr>
  85         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2377">2377</a></td><td><code>std::align</code> requirements overly strict</td><td>Urbana</td><td>Complete</td></tr>
  86         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2396">2396</a></td><td><code>underlying_type</code> doesn't say what to do for an incomplete enumeration type</td><td>Urbana</td><td>Complete</td></tr>
  87         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2399">2399</a></td><td><code>shared_ptr</code>'s constructor from <code>unique_ptr</code> should be constrained</td><td>Urbana</td><td>Complete</td></tr>
  88         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2400">2400</a></td><td><code>shared_ptr</code>'s <code>get_deleter()</code> should use <code>addressof()</code></td><td>Urbana</td><td>Complete</td></tr>
  89         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2401">2401</a></td><td><code>std::function</code> needs more noexcept</td><td>Urbana</td><td>Complete</td></tr>
  90         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2404">2404</a></td><td><code>mismatch()</code>'s complexity needs to be updated</td><td>Urbana</td><td>Complete</td></tr>
  91         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2408">2408</a></td><td>SFINAE-friendly <code>common_type</code> / <code>iterator_traits</code> is missing in C++14</td><td>Urbana</td><td><code>common_type</code> is waiting on <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2465">LWG#2465</a></td></tr>
  92         <tr><td></td><td></td><td></td><td></td></tr>
  93         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2106">2106</td><td><code>move_iterator</code> wrapping iterators returning prvalues</td><td>Urbana</td><td></td></tr>
  94         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2129">2129</td><td>User specializations of <code>std::initializer_list</code></td><td>Urbana</td><td>Complete</td></tr>
  95         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2212">2212</td><td><code>tuple_size</code> for <code>const pair</code> request <tuple> header</td><td>Urbana</td><td>Complete</td></tr>
  96         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2217">2217</td><td><code>operator==(sub_match, string)</code> slices on embedded '\0's</td><td>Urbana</td><td>Complete</td></tr>
  97         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2230">2230</td><td>"see below" for <code>initializer_list</code> constructors of unordered containers</td><td>Urbana</td><td>Complete</td></tr>
  98         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2233">2233</td><td><code>bad_function_call::what()</code> unhelpful</td><td>Urbana</td><td>Complete</td></tr>
  99         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2266">2266</td><td><code>vector</code> and <code>deque</code> have incorrect insert requirements</td><td>Urbana</td><td>Complete</td></tr>
 100         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2325">2325</td><td><code>minmax_element()</code>'s behavior differing from <code>max_element()</code>'s should be noted</td><td>Urbana</td><td>Complete</td></tr>
 101         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2361">2361</td><td>Apply 2299 resolution throughout library</td><td>Urbana</td><td></td></tr>
 102         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2365">2365</td><td>Missing noexcept in <code>shared_ptr::shared_ptr(nullptr_t)</code></td><td>Urbana</td><td>Complete</td></tr>
 103         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2376">2376</td><td><code>bad_weak_ptr::what()</code> overspecified</td><td>Urbana</td><td>Complete</td></tr>
 104         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2387">2387</td><td>More nested types that must be accessible and unambiguous</td><td>Urbana</td><td>Complete</td></tr>
 105         <tr><td></td><td></td><td></td><td></td></tr>
 106         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2059">2059</td><td>C++0x ambiguity problem with map::erase</td><td>Lenexa</td><td>Complete</td></tr>
 107         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2063">2063</td><td>Contradictory requirements for string move assignment</td><td>Lenexa</td><td></td></tr>
 108         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2076">2076</td><td>Bad CopyConstructible requirement in set constructors</td><td>Lenexa</td><td>Complete</td></tr>
 109         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2160">2160</td><td>Unintended destruction ordering-specification of resize</td><td>Lenexa</td><td>Complete</td></tr>
 110         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2168">2168</td><td>Inconsistent specification of uniform_real_distribution constructor</td><td>Lenexa</td><td>Complete</td></tr>
 111         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2239">2239</td><td>min/max/minmax requirements</td><td>Lenexa</td><td>Complete</td></tr>
 112         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2364">2364</td><td>deque and vector pop_back don't specify iterator invalidation requirements</td><td>Lenexa</td><td>Complete</td></tr>
 113         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2369">2369</td><td>constexpr max(initializer_list) vs max_element</td><td>Lenexa</td><td>Complete</td></tr>
 114         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2378">2378</td><td>Behaviour of standard exception types</td><td>Lenexa</td><td>Complete</td></tr>
 115         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2403">2403</td><td>stof() should call strtof() and wcstof()</td><td>Lenexa</td><td>Complete</td></tr>
 116         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2406">2406</td><td>negative_binomial_distribution should reject p == 1</td><td>Lenexa</td><td>Complete</td></tr>
 117         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2407">2407</td><td>packaged_task(allocator_arg_t, const Allocator&, F&&) should neither be constrained nor explicit</td><td>Lenexa</td><td>Complete</td></tr>
 118         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2411">2411</td><td>shared_ptr is only contextually convertible to bool</td><td>Lenexa</td><td>Complete</td></tr>
 119         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2415">2415</td><td>Inconsistency between unique_ptr and shared_ptr</td><td>Lenexa</td><td>Complete</td></tr>
 120         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2420">2420</td><td>function<void(ArgTypes...)> does not discard the return value of the target object</td><td>Lenexa</td><td>Complete</td></tr>
 121         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2425">2425</td><td>operator delete(void*, size_t) doesn't invalidate pointers sufficiently</td><td>Lenexa</td><td>Complete</td></tr>
 122         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2427">2427</td><td>Container adaptors as sequence containers, redux</td><td>Lenexa</td><td>Complete</td></tr>
 123         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2428">2428</td><td>"External declaration" used without being defined</td><td>Lenexa</td><td>Complete</td></tr>
 124         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2433">2433</td><td>uninitialized_copy()/etc. should tolerate overloaded operator&</td><td>Lenexa</td><td>Complete</td></tr>
 125         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2434">2434</td><td>shared_ptr::use_count() is efficient</td><td>Lenexa</td><td>Complete</td></tr>
 126         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2437">2437</td><td>iterator_traits::reference can and can't be void</td><td>Lenexa</td><td>Complete</td></tr>
 127         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2438">2438</td><td>std::iterator inheritance shouldn't be mandated</td><td>Lenexa</td><td>Complete</td></tr>
 128         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2439">2439</td><td>unique_copy() sometimes can't fall back to reading its output</td><td>Lenexa</td><td>Complete</td></tr>
 129         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2440">2440</td><td>seed_seq::size() should be noexcept</td><td>Lenexa</td><td>Complete</td></tr>
 130         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2442">2442</td><td>call_once() shouldn't DECAY_COPY()</td><td>Lenexa</td><td>Complete</td></tr>
 131         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2448">2448</td><td>Non-normative Container destructor specification</td><td>Lenexa</td><td>Complete</td></tr>
 132         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2454">2454</td><td>Add raw_storage_iterator::base() member</td><td>Lenexa</td><td>Complete</td></tr>
 133         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2455">2455</td><td>Allocator default construction should be allowed to throw</td><td>Lenexa</td><td>Complete</td></tr>
 134         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2458">2458</td><td>N3778 and new library deallocation signatures</td><td>Lenexa</td><td>Complete</td></tr>
 135         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2459">2459</td><td>std::polar should require a non-negative rho</td><td>Lenexa</td><td>Complete</td></tr>
 136         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2464">2464</td><td>try_emplace and insert_or_assign misspecified</td><td>Lenexa</td><td>Complete</td></tr>
 137         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2467">2467</td><td>is_always_equal has slightly inconsistent default</td><td>Lenexa</td><td>Complete</td></tr>
 138         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2470">2470</td><td>Allocator's destroy function should be allowed to fail to instantiate</td><td>Lenexa</td><td>Complete</td></tr>
 139         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2482">2482</td><td>[c.strings] Table 73 mentions nonexistent functions</td><td>Lenexa</td><td>Complete</td></tr>
 140         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2488">2488</td><td>Placeholders should be allowed and encouraged to be constexpr</td><td>Lenexa</td><td></td></tr>
 141
 142 <!--
 143         <tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#1214">1214</a></td><td>Insufficient/inconsistent key immutability requirements for associative containers</td><td>Urbana</td><td></td></tr>
 144 -->
 145 <!--    <tr><td></td><td></td><td></td><td></td></tr> -->
 146   </table>
 147
 148   <p>Last Updated: 27-May-2015</p>
 149 </div>
 150 </body>
 151 </html>