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<!--*********************************************************************-->
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<h1>libc++ Kona Status</h1>
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<!--*********************************************************************-->
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<p>This is a temporary page; please check the c++1z status <a href="http://libcxx.llvm.org/cxx1z_status.html">here</a></p>
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<p>This page shows the status of the papers and issues that are expected to be adopted in Kona.</p>
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<p>The groups that have contributed papers:
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<ul>
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<li>LWG - Library working group</li>
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<li>CWG - Core Language Working group</li>
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<li>SG1 - Study group #1 (Concurrency working group)</li>
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</ul>
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</p>
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<h3>Paper Status</h3>
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<table id="papers" border="1">
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<tr><th>Paper #</th><th>Group</th><th>Paper Name</th><th>Meeting</th><th>Status</th><th>First released version</th></tr>
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<!--
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<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>
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-->
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<!-- <tr><td></td><td></td><td></td><td></td><td></td><td></td></tr> -->
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</table>
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<h3>Library Working group Issues Status</h3>
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<table id="issues" border="1">
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<tr><th>Issue #</th><th>Issue Name</th><th>Meeting</th><th>Status</th></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#1169">1169</a></td><td><tt>num_get</tt> not fully compatible with <tt>strto*</tt></td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2072">2072</a></td><td>Unclear wording about capacity of temporary buffers</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2101">2101</a></td><td>Some transformation types can produce impossible types</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2111">2111</a></td><td>Which <tt>unexpected</tt>/<tt>terminate</tt> handler is called from the exception handling runtime?</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2119">2119</a></td><td>Missing <tt>hash</tt> specializations for extended integer types</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2127">2127</a></td><td>Move-construction with <tt>raw_storage_iterator</tt></td><td>Kona</td><td>Patch Ready</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2133">2133</a></td><td>Attitude to overloaded comma for iterators</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2156">2156</a></td><td>Unordered containers' <tt>reserve(n)</tt> reserves for <tt>n-1</tt> elements</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2218">2218</a></td><td>Unclear how containers use <tt>allocator_traits::construct()</tt></td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2219">2219</a></td><td><tt><i>INVOKE</i></tt>-ing a pointer to member with a <tt>reference_wrapper</tt> as the object expression</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2224">2224</a></td><td>Ambiguous status of access to non-live objects</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2234">2234</a></td><td><tt>assert()</tt> should allow usage in constant expressions</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2244">2244</a></td><td>Issue on <tt>basic_istream::seekg</tt></td><td>Kona</td><td>Patch Ready</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2250">2250</a></td><td>Follow-up On Library Issue 2207</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2259">2259</a></td><td>Issues in 17.6.5.5 rules for member functions</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2273">2273</a></td><td><tt>regex_match</tt> ambiguity</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2336">2336</a></td><td><tt>is_trivially_constructible/is_trivially_assignable</tt> traits are always false</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2353">2353</a></td><td><tt>std::next</tt> is over-constrained</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2367">2367</a></td><td><tt>pair</tt> and <tt>tuple</tt> are not correctly implemented for <tt>is_constructible</tt> with no args</td><td>Kona</td><td>Patch Ready</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2380">2380</a></td><td>May <tt><cstdlib></tt> provide <tt>long ::abs(long)</tt> and <tt>long long ::abs(long long)</tt>?</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2384">2384</a></td><td>Allocator's <tt>deallocate</tt> function needs better specification</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2385">2385</a></td><td><tt>function::assign</tt> allocator argument doesn't make sense</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2435">2435</a></td><td><tt>reference_wrapper::operator()</tt>'s Remark should be deleted</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2447">2447</a></td><td>Allocators and <tt>volatile</tt>-qualified value types</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2462">2462</a></td><td><tt>std::ios_base::failure</tt> is overspecified</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2466">2466</a></td><td><tt>allocator_traits::max_size()</tt> default behavior is incorrect</td><td>Kona</td><td>Patch Ready</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2469">2469</a></td><td>Wrong specification of Requires clause of <tt>operator[]</tt> for <tt>map</tt> and <tt>unordered_map</tt></td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2473">2473</a></td><td><tt>basic_filebuf</tt>'s relation to C <tt>FILE</tt> semantics</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2476">2476</a></td><td><tt>scoped_allocator_adaptor</tt> is not assignable</td><td>Kona</td><td>Patch Ready</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2477">2477</a></td><td>Inconsistency of wordings in <tt>std::vector::erase()</tt> and <tt>std::deque::erase()</tt></td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2483">2483</a></td><td><tt>throw_with_nested()</tt> should use <tt>is_final</tt></td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2484">2484</a></td><td><tt>rethrow_if_nested()</tt> is doubly unimplementable</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2485">2485</a></td><td><tt>get()</tt> should be overloaded for <tt>const tuple&&</tt></td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2486">2486</a></td><td><tt>mem_fn()</tt> should be required to use perfect forwarding</td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2487">2487</a></td><td><tt>bind()</tt> should be <tt>const</tt>-overloaded, not <i>cv</i>-overloaded</td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2489">2489</a></td><td><tt>mem_fn()</tt> should be <tt>noexcept</tt></td><td>Kona</td><td>Patch Ready</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2492">2492</a></td><td>Clarify requirements for <tt>comp</tt></td><td>Kona</td><td>Complete</td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2494">2494</a></td><td>[fund.ts.v2] <tt>ostream_joiner</tt> needs <tt>noexcept</tt></td><td>Kona</td><td></td></tr>
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#2495">2495</a></td><td>There is no such thing as an Exception Safety element</td><td>Kona</td><td></td></tr>
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<!--
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<tr><td><a href="http://cplusplus.github.io/LWG/lwg-defects.html#1214">1214</a></td><td>Insufficient/inconsistent key immutability requirements for associative containers</td><td>Urbana</td><td></td></tr>
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-->
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</table>
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<h3>Comments about the issues</h3>
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<ul>
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<li>1169 - We currently have a single function __num_get_float that calls strtold_l, and then casts down to the appropriate floating point type. That will have to change.</li>
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<li><i>2072 - We already do this; this is just making the wording better.</i></li>
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<li>2101 - Need to write some careful test cases. In particular, need to check function types with/without const/ref qualifiers. Currently we get this wrong. Installing metashell to play with these.</li>
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<li><i>2111 - Resolved an ambiguity by calling it out. No code change required.</i></li>
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<li>2119 - Hashes for all integral and enumeration types. Research needed</li>
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<li><i>2127 - Add a new member to raw_storage_iterator. Looks simple.</i> <b>Patch Available</b></li>
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<li><i>2133 - We do this already; thanks Eric.</i></li>
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<li>2156 - check and make sure that we already do this. Write a test.</li>
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<li>2181 - I suspect that this will not require any code changes, but will need to be read carefully.</li>
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<li>2218 - Shouldn't require any code changes.</li>
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<li>2219 - Sizable changes required. INVOKE needs 2 additional overloads and plenty of tests. I'm not going to back port this to C++03. (Eric)</li>
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<li>2224 - </li>
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<li>2234 - </li>
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<li><i>2244 - We don't do this; easy fix. <b>Patch Available</b></i></li>
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<li>2250 - Looks like wording cleanup. Need to check more closely, but I think there's no code changes here.</li>
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<li><i>2259 - No code changes needed here.</i></li>
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<li>2273 - </li>
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<li>2336 - <b>Check later</b></li>
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<li>2353 - Simple change, needs a test. (test probably used to exist)</li>
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<li><i>2367 - <b>Patch Available as D13750</b> (Eric)</i></li>
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<li><i>2380 - No code changes here; we already do this.</i></li>
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<li><i>2384 - Wording cleanup; no code change required</i></li>
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<li>2385 - Removing broken signatures. Only question is "how far back"?</li>
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<li><i>2435 - Wording cleanup; no code change required</i></li>
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<li><i>2447 - This is a relaxation of a requirement that we satisfy. No changes needed.</i>.</li>
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<li><i>2462 - Added a simple test. No code change needed</i> <b>Patch Available</b></li>
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<li><i>2466 - Simple change; need a test.</i> <b>Patch Available</b></li>
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<li>2469 - This is a follow on to 2464, which we're done. This restates a bunch of operations in terms of newer ops. Probably refactoring to do here, but tests shouldn't change.</li>
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<li><i>2473 - There are two changes here; one to <tt>filebuf::seekpos</tt> and the other to <tt>filebuf::sync</tt>. We do both of these already.</i></li>
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<li><i>2476 - Just needed tests.</i> <b>Patch Available</b></li>
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<li><i>2477 - Wording cleanup.</i></li>
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<li><i>2483 - We already do this.</i></li>
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<li><i>2484 - We already do this.</i></li>
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<li>2485 - Ask Eric to do it. </li>
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<li>2486 - Lots of code changes, all mechanical. Tests will be sizable.</li>
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<li><i>2487 - This is removing a requirement on bind(), which we don't currently satisfy. So, nothing to do.</i></li>
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<li><i>2489 - Looks easy. Just add some NOEXCEPT, and tests.</i> <b>Patch Available</b></li>
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<li><i>2492 - Wording cleanup; no code changes needed.</i></li>
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<li>2494 - My implementation of this (not checked in) already has these.</li>
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<li>2494 - </li>
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</ul>
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<p>Last Updated: 5-Oct-2015</p>
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