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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>C++ Standard Evolution Completed Issues List</title>
<style type="text/css">
p {text-align:justify}
li {text-align:justify}
blockquote.note
{
background-color:#E0E0E0;
padding-left: 15px;
padding-right: 15px;
padding-top: 1px;
padding-bottom: 1px;
}
ins {background-color:#A0FFA0}
del {background-color:#FFA0A0}
</style>
</head>
<body>
<table>
<tr>
<td align="left">Doc. no.</td>
<td align="left">N4540</td>
</tr>
<tr>
<td align="left">Date:</td>
<td align="left">2015-05-22</td>
</tr>
<tr>
<td align="left">Project:</td>
<td align="left">Programming Language C++</td>
</tr>
<tr>
<td align="left">Reply to:</td>
<td align="left">Ville Voutilainen <<a href="mailto:ville.voutilainen@gmail.com">ville.voutilainen@gmail.com</a>></td>
</tr>
</table>
<h1>C++ Standard Evolution Completed Issues List (Revision R12)</h1>
<p>Revised 2015-05-22 at 17:05:15 UTC</p>
<p>Reference ISO/IEC IS 14882:2003(E)</p>
<p>Also see:</p>
<ul>
<li><a href="ewg-toc.html">Table of Contents</a> for all evolution issues.</li>
<li><a href="ewg-index.html">Index by Section</a> for all evolution issues.</li>
<li><a href="ewg-status.html">Index by Status</a> for all evolution issues.</li>
<li><a href="ewg-active.html">Evolution Active Issues List</a></li>
<li><a href="ewg-closed.html">Evolution Closed Issues List</a></li>
</ul>
<p>This document contains only evolution issues which have been closed
by the Evolution Working Group (EWG) after being found to be acceptable
extensions to the standard. That is, issues which have a status of <a href="ewg-active.html#DR">DR</a>,
<a href="ewg-active.html#TC1">TC1</a>, <a href="ewg-active.html#WP">WP</a>, <a href="ewg-active.html#C++11">C++11</a>,
or <a href="ewg-active.html#Resolved">Resolved</a>. See the
<a href="ewg-closed.html">Evolution Closed Issues List</a> for issues closed as non-defects. See the
<a href="ewg-active.html">Evolution Active Issues List</a> for active issues and more information. The
introductory material in that document also applies to this
document.</p>
<h2>Revision History</h2>
<ul>
<li>R12: 2015-05-22 post-Lenexa mailing<ul>
<li><b>Summary:</b><ul>
<li>99 open issues, up by 1.</li>
<li>90 closed issues, up by 11.</li>
<li>189 issues total, up by 12.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 5 NAD issues: <a href="ewg-closed.html#178">178</a>, <a href="ewg-closed.html#179">179</a>, <a href="ewg-closed.html#183">183</a>, <a href="ewg-closed.html#184">184</a>, <a href="ewg-closed.html#186">186</a>.</li>
<li>Added the following 2 New issues: <a href="ewg-active.html#188">188</a>, <a href="ewg-active.html#189">189</a>.</li>
<li>Added the following 3 Open issues: <a href="ewg-active.html#181">181</a>, <a href="ewg-active.html#182">182</a>, <a href="ewg-active.html#187">187</a>.</li>
<li>Added the following 2 Ready issues: <a href="ewg-active.html#180">180</a>, <a href="ewg-active.html#185">185</a>.</li>
<li>Changed the following issue from New to Dup: <a href="ewg-closed.html#168">168</a>.</li>
<li>Changed the following 2 issues from Open to Dup: <a href="ewg-closed.html#137">137</a>, <a href="ewg-closed.html#159">159</a>.</li>
<li>Changed the following 3 issues from New to NAD: <a href="ewg-closed.html#167">167</a>, <a href="ewg-closed.html#171">171</a>, <a href="ewg-closed.html#176">176</a>.</li>
<li>Changed the following 4 issues from New to Open: <a href="ewg-active.html#169">169</a>, <a href="ewg-active.html#172">172</a>, <a href="ewg-active.html#173">173</a>, <a href="ewg-active.html#174">174</a>.</li>
<li>Changed the following issue from New to Ready: <a href="ewg-active.html#170">170</a>.</li>
<li>Changed the following issue from Open to Ready: <a href="ewg-active.html#142">142</a>.</li>
</ul></li>
</ul>
</li>
<li>R11:
2015-04-10 pre-Lenexa mailing
<ul><li><b>Summary:</b><ul>
<li>98 open issues, up by 13.</li>
<li>79 closed issues, down by 1.</li>
<li>177 issues total, up by 12.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 12 New issues: <a href="ewg-active.html#166">166</a>, <a href="ewg-active.html#167">167</a>, <a href="ewg-active.html#168">168</a>, <a href="ewg-active.html#169">169</a>, <a href="ewg-active.html#170">170</a>, <a href="ewg-active.html#171">171</a>, <a href="ewg-active.html#172">172</a>, <a href="ewg-active.html#173">173</a>, <a href="ewg-active.html#174">174</a>, <a href="ewg-active.html#175">175</a>, <a href="ewg-active.html#176">176</a>, <a href="ewg-active.html#177">177</a>.</li>
<li>Changed the following 14 issues from WP to C++14: <a href="ewg-complete.html#1">1</a>, <a href="ewg-complete.html#3">3</a>, <a href="ewg-complete.html#6">6</a>, <a href="ewg-complete.html#7">7</a>, <a href="ewg-complete.html#16">16</a>, <a href="ewg-complete.html#18">18</a>, <a href="ewg-complete.html#20">20</a>, <a href="ewg-complete.html#21">21</a>, <a href="ewg-complete.html#25">25</a>, <a href="ewg-complete.html#27">27</a>, <a href="ewg-complete.html#46">46</a>, <a href="ewg-complete.html#61">61</a>, <a href="ewg-complete.html#62">62</a>, <a href="ewg-complete.html#64">64</a>.</li>
<li>Changed the following issue from WP to Open: <a href="ewg-active.html#13">13</a>.</li>
</ul></li>
</ul>
</li>
<li>R10:
2014-10-29 post-Urbana mailing
<ul><li><b>Summary:</b><ul>
<li>85 open issues, up by 6.</li>
<li>80 closed issues, up by 20.</li>
<li>165 issues total, up by 26.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 6 NAD issues: <a href="ewg-closed.html#140">140</a>, <a href="ewg-closed.html#144">144</a>, <a href="ewg-closed.html#145">145</a>, <a href="ewg-closed.html#150">150</a>, <a href="ewg-closed.html#156">156</a>, <a href="ewg-closed.html#157">157</a>.</li>
<li>Added the following New issue: <a href="ewg-active.html#146">146</a>.</li>
<li>Added the following 13 Open issues: <a href="ewg-active.html#141">141</a>, <a href="ewg-active.html#142">142</a>, <a href="ewg-active.html#143">143</a>, <a href="ewg-active.html#148">148</a>, <a href="ewg-active.html#149">149</a>, <a href="ewg-active.html#151">151</a>, <a href="ewg-active.html#152">152</a>, <a href="ewg-active.html#153">153</a>, <a href="ewg-active.html#158">158</a>, <a href="ewg-active.html#159">159</a>, <a href="ewg-active.html#160">160</a>, <a href="ewg-active.html#162">162</a>, <a href="ewg-active.html#163">163</a>.</li>
<li>Added the following 2 Ready issues: <a href="ewg-active.html#164">164</a>, <a href="ewg-active.html#165">165</a>.</li>
<li>Added the following 4 WP issues: <a href="ewg-complete.html#147">147</a>, <a href="ewg-complete.html#154">154</a>, <a href="ewg-complete.html#155">155</a>, <a href="ewg-complete.html#161">161</a>.</li>
<li>Changed the following issue from New to NAD: <a href="ewg-closed.html#138">138</a>.</li>
<li>Changed the following issue from Open to NAD: <a href="ewg-closed.html#114">114</a>.</li>
<li>Changed the following 2 issues from New to Open: <a href="ewg-active.html#129">129</a>, <a href="ewg-active.html#137">137</a>.</li>
<li>Changed the following issue from Ready to Open: <a href="ewg-active.html#81">81</a>.</li>
<li>Changed the following issue from New to Ready: <a href="ewg-active.html#139">139</a>.</li>
<li>Changed the following issue from Open to Ready: <a href="ewg-active.html#72">72</a>.</li>
<li>Changed the following 4 issues from Open to WP: <a href="ewg-complete.html#63">63</a>, <a href="ewg-complete.html#82">82</a>, <a href="ewg-complete.html#113">113</a>, <a href="ewg-complete.html#126">126</a>.</li>
<li>Changed the following 4 issues from Ready to WP: <a href="ewg-complete.html#80">80</a>, <a href="ewg-complete.html#119">119</a>, <a href="ewg-complete.html#121">121</a>, <a href="ewg-complete.html#131">131</a>.</li>
</ul></li>
</ul>
</li>
<li>R09:
2014-10-09 pre-Urbana mailing
<ul><li><b>Summary:</b><ul>
<li>79 open issues, up by 5.</li>
<li>60 closed issues, up by 0.</li>
<li>139 issues total, up by 5.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 4 New issues: <a href="ewg-active.html#135">135</a>, <a href="ewg-active.html#137">137</a>, <a href="ewg-active.html#138">138</a>, <a href="ewg-active.html#139">139</a>.</li>
<li>Added the following Open issue: <a href="ewg-active.html#136">136</a>.</li>
</ul></li>
</ul>
</li>
<li>R08:
2014-07-02 post-Rapperswil mailing
<ul><li><b>Summary:</b><ul>
<li>74 open issues, down by 12.</li>
<li>60 closed issues, up by 27.</li>
<li>134 issues total, up by 15.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 3 NAD issues: <a href="ewg-closed.html#124">124</a>, <a href="ewg-closed.html#132">132</a>, <a href="ewg-closed.html#133">133</a>.</li>
<li>Added the following 3 New issues: <a href="ewg-active.html#128">128</a>, <a href="ewg-active.html#129">129</a>, <a href="ewg-active.html#130">130</a>.</li>
<li>Added the following 5 Open issues: <a href="ewg-active.html#120">120</a>, <a href="ewg-active.html#122">122</a>, <a href="ewg-active.html#125">125</a>, <a href="ewg-active.html#126">126</a>, <a href="ewg-active.html#127">127</a>.</li>
<li>Added the following 2 Ready issues: <a href="ewg-active.html#121">121</a>, <a href="ewg-active.html#131">131</a>.</li>
<li>Added the following 2 Resolved issues: <a href="ewg-complete.html#123">123</a>, <a href="ewg-complete.html#134">134</a>.</li>
<li>Changed the following 2 issues from New to Dup: <a href="ewg-closed.html#77">77</a>, <a href="ewg-closed.html#103">103</a>.</li>
<li>Changed the following 14 issues from New to NAD: <a href="ewg-closed.html#70">70</a>, <a href="ewg-closed.html#85">85</a>, <a href="ewg-closed.html#89">89</a>, <a href="ewg-closed.html#90">90</a>, <a href="ewg-closed.html#91">91</a>, <a href="ewg-closed.html#95">95</a>, <a href="ewg-closed.html#99">99</a>, <a href="ewg-closed.html#100">100</a>, <a href="ewg-closed.html#104">104</a>, <a href="ewg-closed.html#105">105</a>, <a href="ewg-closed.html#109">109</a>, <a href="ewg-closed.html#110">110</a>, <a href="ewg-closed.html#112">112</a>, <a href="ewg-closed.html#117">117</a>.</li>
<li>Changed the following 11 issues from New to Open: <a href="ewg-active.html#88">88</a>, <a href="ewg-active.html#92">92</a>, <a href="ewg-active.html#96">96</a>, <a href="ewg-active.html#98">98</a>, <a href="ewg-active.html#101">101</a>, <a href="ewg-active.html#102">102</a>, <a href="ewg-active.html#106">106</a>, <a href="ewg-active.html#108">108</a>, <a href="ewg-active.html#113">113</a>, <a href="ewg-active.html#116">116</a>, <a href="ewg-active.html#118">118</a>.</li>
<li>Changed the following issue from WP to Open: <a href="ewg-active.html#22">22</a>.</li>
<li>Changed the following 2 issues from New to Ready: <a href="ewg-active.html#111">111</a>, <a href="ewg-active.html#119">119</a>.</li>
<li>Changed the following 2 issues from New to Resolved: <a href="ewg-complete.html#8">8</a>, <a href="ewg-complete.html#67">67</a>.</li>
<li>Changed the following 4 issues from Ready to Resolved: <a href="ewg-complete.html#40">40</a>, <a href="ewg-complete.html#42">42</a>, <a href="ewg-complete.html#44">44</a>, <a href="ewg-complete.html#45">45</a>.</li>
<li>Changed the following issue from Ready to WP: <a href="ewg-complete.html#46">46</a>.</li>
</ul></li>
</ul>
</li>
<li>R07:
2014-05-20 pre-Rapperswil mailing
<ul><li><b>Summary:</b><ul>
<li>86 open issues, up by 6.</li>
<li>33 closed issues, up by 0.</li>
<li>119 issues total, up by 6.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 5 New issues: <a href="ewg-active.html#115">115</a>, <a href="ewg-active.html#116">116</a>, <a href="ewg-active.html#117">117</a>, <a href="ewg-active.html#118">118</a>, <a href="ewg-active.html#119">119</a>.</li>
<li>Added the following Open issue: <a href="ewg-active.html#114">114</a>.</li>
</ul></li>
</ul>
</li>
<li>R06:
2014-02-21 post-Issaquah mailing
<ul><li><b>Summary:</b><ul>
<li>80 open issues, up by 31.</li>
<li>33 closed issues, up by 3.</li>
<li>113 issues total, up by 34.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 3 NAD issues: <a href="ewg-closed.html#87">87</a>, <a href="ewg-closed.html#97">97</a>, <a href="ewg-closed.html#107">107</a>.</li>
<li>Added the following 26 New issues: <a href="ewg-active.html#83">83</a>, <a href="ewg-active.html#85">85</a>, <a href="ewg-active.html#88">88</a>, <a href="ewg-active.html#89">89</a>, <a href="ewg-active.html#90">90</a>, <a href="ewg-active.html#91">91</a>, <a href="ewg-active.html#92">92</a>, <a href="ewg-active.html#93">93</a>, <a href="ewg-active.html#94">94</a>, <a href="ewg-active.html#95">95</a>, <a href="ewg-active.html#96">96</a>, <a href="ewg-active.html#98">98</a>, <a href="ewg-active.html#99">99</a>, <a href="ewg-active.html#100">100</a>, <a href="ewg-active.html#101">101</a>, <a href="ewg-active.html#102">102</a>, <a href="ewg-active.html#103">103</a>, <a href="ewg-active.html#104">104</a>, <a href="ewg-active.html#105">105</a>, <a href="ewg-active.html#106">106</a>, <a href="ewg-active.html#108">108</a>, <a href="ewg-active.html#109">109</a>, <a href="ewg-active.html#110">110</a>, <a href="ewg-active.html#111">111</a>, <a href="ewg-active.html#112">112</a>, <a href="ewg-active.html#113">113</a>.</li>
<li>Added the following 3 Open issues: <a href="ewg-active.html#82">82</a>, <a href="ewg-active.html#84">84</a>, <a href="ewg-active.html#86">86</a>.</li>
<li>Added the following 2 Ready issues: <a href="ewg-active.html#80">80</a>, <a href="ewg-active.html#81">81</a>.</li>
</ul></li>
</ul>
</li>
<li>R05:
2014-01-17 pre-Issaquah mailing
<ul><li><b>Summary:</b><ul>
<li>49 open issues, up by 3.</li>
<li>30 closed issues, up by 0.</li>
<li>79 issues total, up by 3.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 3 New issues: <a href="ewg-active.html#77">77</a>, <a href="ewg-active.html#78">78</a>, <a href="ewg-active.html#79">79</a>.</li>
<li>Changed the following issue from New to Open: <a href="ewg-active.html#72">72</a>.</li>
<li>Changed the following issue from Ready to Open: <a href="ewg-active.html#41">41</a>.</li>
</ul></li>
</ul>
</li>
<li>R04:
2013-10-11 post-Chicago mailing
<ul><li><b>Summary:</b><ul>
<li>46 open issues, down by 9.</li>
<li>30 closed issues, up by 12.</li>
<li>76 issues total, up by 3.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 3 Open issues: <a href="ewg-active.html#74">74</a>, <a href="ewg-active.html#75">75</a>, <a href="ewg-active.html#76">76</a>.</li>
<li>Changed the following 4 issues from New to NAD: <a href="ewg-closed.html#12">12</a>, <a href="ewg-closed.html#68">68</a>, <a href="ewg-closed.html#69">69</a>, <a href="ewg-closed.html#73">73</a>.</li>
<li>Changed the following 2 issues from Open to NAD: <a href="ewg-closed.html#32">32</a>, <a href="ewg-closed.html#33">33</a>.</li>
<li>Changed the following 6 issues from New to Open: <a href="ewg-active.html#2">2</a>, <a href="ewg-active.html#17">17</a>, <a href="ewg-active.html#19">19</a>, <a href="ewg-active.html#23">23</a>, <a href="ewg-active.html#52">52</a>, <a href="ewg-active.html#71">71</a>.</li>
<li>Changed the following 4 issues from Open to WP: <a href="ewg-complete.html#18">18</a>, <a href="ewg-complete.html#21">21</a>, <a href="ewg-complete.html#22">22</a>, <a href="ewg-complete.html#27">27</a>.</li>
<li>Changed the following 2 issues from Ready to WP: <a href="ewg-complete.html#3">3</a>, <a href="ewg-complete.html#20">20</a>.</li>
</ul></li>
</ul>
</li>
<li>R03:
2013-08-27 pre-Chicago mailing
<ul><li><b>Summary:</b><ul>
<li>55 open issues, up by 7.</li>
<li>18 closed issues, up by 0.</li>
<li>73 issues total, up by 7.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 7 New issues: <a href="ewg-active.html#67">67</a>, <a href="ewg-active.html#68">68</a>, <a href="ewg-active.html#69">69</a>, <a href="ewg-active.html#70">70</a>, <a href="ewg-active.html#71">71</a>, <a href="ewg-active.html#72">72</a>, <a href="ewg-active.html#73">73</a>.</li>
</ul></li>
</ul>
</li>
<li>R02:
2013-05-06 post-Bristol mailing
<ul>
<li><b>Summary:</b><ul>
<li>49 open issues, up by 2.</li>
<li>18 closed issues, up by 17.</li>
<li>67 issues total, up by 19.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following 3 NAD issues: <a href="ewg-closed.html#53">53</a>, <a href="ewg-closed.html#54">54</a>, <a href="ewg-closed.html#55">55</a>.</li>
<li>Added the following 6 New issues: <a href="ewg-active.html#49">49</a>, <a href="ewg-active.html#50">50</a>, <a href="ewg-active.html#51">51</a>, <a href="ewg-active.html#52">52</a>, <a href="ewg-active.html#59">59</a>, <a href="ewg-active.html#65">65</a>.</li>
<li>Added the following 7 Open issues: <a href="ewg-active.html#56">56</a>, <a href="ewg-active.html#57">57</a>, <a href="ewg-active.html#58">58</a>, <a href="ewg-active.html#60">60</a>, <a href="ewg-active.html#63">63</a>, <a href="ewg-active.html#66">66</a>, <a href="ewg-active.html#66">66</a>.</li>
<li>Added the following 3 WP issues: <a href="ewg-complete.html#61">61</a>, <a href="ewg-complete.html#62">62</a>, <a href="ewg-complete.html#64">64</a>.</li>
<li>Changed the following 5 issues from New to NAD: <a href="ewg-closed.html#31">31</a>, <a href="ewg-closed.html#36">36</a>, <a href="ewg-closed.html#37">37</a>, <a href="ewg-closed.html#38">38</a>, <a href="ewg-closed.html#47">47</a>.</li>
<li>Changed the following 8 issues from New to Open: <a href="ewg-active.html#14">14</a>, <a href="ewg-active.html#30">30</a>, <a href="ewg-active.html#32">32</a>, <a href="ewg-active.html#33">33</a>, <a href="ewg-active.html#34">34</a>, <a href="ewg-active.html#35">35</a>, <a href="ewg-active.html#43">43</a>, <a href="ewg-active.html#48">48</a>.</li>
<li>Changed the following 6 issues from New to Ready: <a href="ewg-active.html#40">40</a>, <a href="ewg-active.html#41">41</a>, <a href="ewg-active.html#42">42</a>, <a href="ewg-active.html#44">44</a>, <a href="ewg-active.html#45">45</a>, <a href="ewg-active.html#46">46</a>.</li>
<li>Changed the following 2 issues from Open to WP: <a href="ewg-complete.html#16">16</a>, <a href="ewg-complete.html#25">25</a>.</li>
<li>Changed the following 4 issues from Ready to WP: <a href="ewg-complete.html#1">1</a>, <a href="ewg-complete.html#6">6</a>, <a href="ewg-complete.html#7">7</a>, <a href="ewg-complete.html#13">13</a>.</li>
</ul></li>
</ul>
</li>
<li>R01:
2013-03-18 Pre-Bristol mailing
<ul>
<li><b>Summary:</b><ul>
<li>47 open issues, up by 47.</li>
<li>1 closed issues, up by 1.</li>
<li>48 issues total, up by 48.</li>
</ul></li>
<li><b>Details:</b><ul>
<li>Added the following NAD issue: <a href="ewg-closed.html#39">39</a>.</li>
<li>Added the following 32 New issues: <a href="ewg-active.html#2">2</a>, <a href="ewg-active.html#5">5</a>, <a href="ewg-active.html#8">8</a>, <a href="ewg-active.html#10">10</a>, <a href="ewg-active.html#11">11</a>, <a href="ewg-active.html#12">12</a>, <a href="ewg-active.html#14">14</a>, <a href="ewg-active.html#15">15</a>, <a href="ewg-active.html#17">17</a>, <a href="ewg-active.html#19">19</a>, <a href="ewg-active.html#23">23</a>, <a href="ewg-active.html#24">24</a>, <a href="ewg-active.html#26">26</a>, <a href="ewg-active.html#28">28</a>, <a href="ewg-active.html#30">30</a>, <a href="ewg-active.html#31">31</a>, <a href="ewg-active.html#32">32</a>, <a href="ewg-active.html#33">33</a>, <a href="ewg-active.html#34">34</a>, <a href="ewg-active.html#35">35</a>, <a href="ewg-active.html#36">36</a>, <a href="ewg-active.html#37">37</a>, <a href="ewg-active.html#38">38</a>, <a href="ewg-active.html#40">40</a>, <a href="ewg-active.html#41">41</a>, <a href="ewg-active.html#42">42</a>, <a href="ewg-active.html#43">43</a>, <a href="ewg-active.html#44">44</a>, <a href="ewg-active.html#45">45</a>, <a href="ewg-active.html#46">46</a>, <a href="ewg-active.html#47">47</a>, <a href="ewg-active.html#48">48</a>.</li>
<li>Added the following 9 Open issues: <a href="ewg-active.html#4">4</a>, <a href="ewg-active.html#9">9</a>, <a href="ewg-active.html#16">16</a>, <a href="ewg-active.html#18">18</a>, <a href="ewg-active.html#21">21</a>, <a href="ewg-active.html#22">22</a>, <a href="ewg-active.html#25">25</a>, <a href="ewg-active.html#27">27</a>, <a href="ewg-active.html#29">29</a>.</li>
<li>Added the following 6 Ready issues: <a href="ewg-active.html#1">1</a>, <a href="ewg-active.html#3">3</a>, <a href="ewg-active.html#6">6</a>, <a href="ewg-active.html#7">7</a>, <a href="ewg-active.html#13">13</a>, <a href="ewg-active.html#20">20</a>.</li>
</ul></li>
</ul>
</li>
</ul>
<h2>Completed Issues</h2>
<hr>
<h3><a name="1"></a>1. N3638, N3582, N3386 Return type deduction for normal functions</h3>
<p><b>Section:</b> 7.1.6.4 [dcl.spec.auto] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Jason Merrill <b>Opened:</b> 2012-03-27 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#dcl.spec.auto">issues</a> in [dcl.spec.auto].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3386.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3386.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3582.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3582.html</a>
</p>
<p>Reviewed by EWG in Portland 2012, proceeding to CWG.</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3638.</p>
<p><b>Wording available:</b></p>
<p>The paper contains the proposed wording.</p>
<hr>
<h3><a name="3"></a>3. N3760, N3394 [[deprecated]] attribute</h3>
<p><b>Section:</b> 7.6 [dcl.attr] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Alberto Ganesh Barbati <b>Opened:</b> 2012-06-12 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3760.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3760.html</a>
</p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3394.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3394.html</a>
</p>
<p>Reviewed by EWG in Portland 2012, proceeding to CWG.</p>
<p>Adopted in Chicago 2013</p>
<p><b>Wording available:</b></p>
<p>The paper contains the proposed wording.</p>
<hr>
<h3><a name="6"></a>6.
N3667, N3401 Generating move operations (elaborating on Core 1402)
</h3>
<p><b>Section:</b> 12.8 [class.copy] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Ville Voutilainen <b>Opened:</b> 2012-09-21 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#class.copy">issues</a> in [class.copy].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3401.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3401.html</a>
<p>Reviewed by EWG in Portland 2012, proceeding to CWG.</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3667.</p>
<p><b>Wording available:</b></p>
<p>The related Core issue contains the proposed wording.</p>
<hr>
<h3><a name="7"></a>7.
N3642, N3468, N3402 User-defined Literals for Standard Library Types, N3472 Binary Literals in the C++ Core Language
</h3>
<p><b>Section:</b> 2.14.2 [lex.icon] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Peter Sommerlad <b>Opened:</b> 2012-09-08 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3402.pdf">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3402.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2012/n3468.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2012/n3468.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2012/n3472.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2012/n3472.pdf</a>
</p>
<p>Reviewed by EWG in Portland 2012, binary literals to be added into the core language, the rest of the paper is on LWG's plate. The binary literals are proceeding to CWG.</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3642.</p>
<p>N3472 also accepted into the Working Draft in Bristol 2013.</p>
<p><b>Wording available:</b></p>
<p>The paper contains the Library wording, Dennett has written the Core
wording (N3472) for binary literals.</p>
<hr>
<h3><a name="8"></a>8.
N3492, N3403 Use Cases for Compile-Time Reflection
</h3>
<p><b>Section:</b> 18 [language.support] <b>Status:</b> <a href="ewg-active.html#Resolved">Resolved</a>
<b>Submitter:</b> Mike Spertus <b>Opened:</b> 2012-09-22 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#Resolved">Resolved</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3403.pdf">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3403.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2012/n3492.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2012/n3492.pdf</a>
</p>
<p>Not reviewed by EWG yet, to be handled by the Reflection Study Group (SG7).</p>
<hr>
<h3><a name="16"></a>16.
N3649, N3560, N3559, N3418 Proposal for Generic (Polymorphic) Lambda Expressions
</h3>
<p><b>Section:</b> 5.1.2 [expr.prim.lambda] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Faisal Vali <b>Opened:</b> 2012-09-21 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#expr.prim.lambda">issues</a> in [expr.prim.lambda].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3418.pdf">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3418.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3559.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3559.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3560.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3560.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3649.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3649.html</a>
</p>
<p>
Reviewed by EWG in Portland 2012, proceeding with a follow-up paper.
</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3649.</p>
<p>Bristol 2013: Do not re-open proposals 2.1 and 2.2 in N3560,
they are considered NAD. The proposals 2.3 and 2.4 are covered by
N3649.
</p>
<hr>
<h3><a name="18"></a>18.
N3424 Lambda Correctness and Usability Issues
</h3>
<p><b>Section:</b> 5.1.2 [expr.prim.lambda] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Herb Sutter <b>Opened:</b> 2012-09-23 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#expr.prim.lambda">issues</a> in [expr.prim.lambda].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3424.pdf">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3424.pdf</a>
<p>
Reviewed by EWG in Portland 2012, proceeding with a follow-up paper. Changes to const captures rejected, capturing of 'this' and members encouraged to continue with a follow-up paper.
</p>
<p>
Init-captures in C++14 provide the necessary facilities for capturing
'this' and class members, voted into the WP in Bristol 2013.
</p>
<hr>
<h3><a name="20"></a>20.
N3778, N3663, N3536, N3432 C++ Sized Deallocation
</h3>
<p><b>Section:</b> 3.7.4 [basic.stc.dynamic] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Lawrence Crowl <b>Opened:</b> 2012-09-23 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#basic.stc.dynamic">issues</a> in [basic.stc.dynamic].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3663.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3663.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3536.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3536.html</a>
</p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3432.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3432.html</a>
</p>
<p>
Reviewed by EWG in Portland 2012, proceeding to CWG.
</p>
<p><b>Wording available:</b></p>
<p>The paper contains the proposed wording.</p>
<p>Adopted in the Chicago 2013 meeting as N3778.</p>
<hr>
<h3><a name="21"></a>21.
N3664, N3537, N3433 Clarifying Memory Allocation
</h3>
<p><b>Section:</b> 3.7.4 [basic.stc.dynamic] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Lawrence Crowl <b>Opened:</b> 2012-09-23 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#basic.stc.dynamic">issues</a> in [basic.stc.dynamic].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3664.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3664.html</a>
</p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3537.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3537.html</a>
</p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3433.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3433.html</a>
</p>
<p>
Reviewed by EWG in Portland 2012, proceeding with a follow-up paper.
</p>
<p>Adopted in Bristol 2013</p>
<p><b>Wording available:</b></p>
<p>The paper contains the proposed wording.</p>
<hr>
<h3><a name="25"></a>25.
N3652, N3597, N3598, N3444 Relaxing syntactic constraints on constexpr function definitions
</h3>
<p><b>Section:</b> 5.19 [expr.const] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Richard Smith <b>Opened:</b> 2012-09-21 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#expr.const">issues</a> in [expr.const].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3444.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3444.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3597.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3597.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3598.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3598.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3652.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3652.html</a>
</p>
<p>
Reviewed by EWG in Portland 2012, proceeding with a follow-up paper.
</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3652.</p>
<hr>
<h3><a name="27"></a>27.
N3781 Single-Quotation-Mark as a Digit Separator, N3661, N3499 Digit Separators, N3448 Painless Digit Separation
</h3>
<p><b>Section:</b> 2.10 [lex.ppnumber] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Daveed Vandevoorde <b>Opened:</b> 2012-09-21 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3499.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3499.html</a>
</p>
<p>
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3448.pdf">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3448.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3661.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3661.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3781.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3781.pdf</a>
</p>
<p>
Reviewed by EWG in Portland 2012, proceeding with a follow-up paper.
</p>
<p>
Bristol 2013:
</p>
<p>
Straw poll:
</p>
<p>
Double radix point as the suffix disambiguator:
</p>
<p>
SF: 8 F: 5 N: 0 A: 0 SA: 0
</p>
<p>
Convey to Core, target C++14:
</p>
<p>
SF: 10 F: 3 N: 0 A: 0 SA: 0
</p>
<p>
The paper was not adopted in Bristol, because its motion didn't pass.
</p>
<p>Adopted in Chicago 2013, as N3781.</p>
<p><b>Wording available:</b></p>
<p>The paper contains the proposed wording.</p>
<hr>
<h3><a name="40"></a>40.
[tiny] Relax the allocator requirements on vector so that the small object optimization is allowed
</h3>
<p><b>Section:</b> 23.3.6 [vector] <b>Status:</b> <a href="ewg-active.html#Resolved">Resolved</a>
<b>Submitter:</b> Nevin Liber <b>Opened:</b> 2012-11-27 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#Resolved">Resolved</a> status.</p>
<p><b>Discussion:</b></p>
<p>
I'd like it to be possible to use the small object optimization (embedding up to a fixed number of objects inside the allocator itself) inside a vector.
</p>
<p>
Bristol 2013: Designated for LEWG.
</p>
<p>
Filed as <a href="https://issues.isocpp.org/show_bug.cgi?id=38">LEWG Bug 38</a>, closing as Resolved on the EWG side.
</p>
<hr>
<h3><a name="42"></a>42.
[tiny] basic_string(const charT*, size_type, const Allocator&) requires clause too restrictive
</h3>
<p><b>Section:</b> 21.4.2 [string.cons] <b>Status:</b> <a href="ewg-active.html#Resolved">Resolved</a>
<b>Submitter:</b> Nevin Liber <b>Opened:</b> 2012-12-19 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#Resolved">Resolved</a> status.</p>
<p><b>Discussion:</b></p>
<p>
In n3485 21.4.2p6 (basic_string constructors and assignment operators), we have:
<pre>
basic_string(const charT* s, size_type n,
const Allocator& a = Allocator());
Requires: s shall not be a null pointer and n < npos.
</pre>
That requires clause is too restrictive; s can be a null pointer when n==0.
A (simplified) use case I have seen:
<pre>
std::string StringFromVector(std::vector<char> const& vc)
{ return std::string(vc.data(), vc.size()); }
</pre>
Since a conforming implementation can return a null pointer for vc.data() when vc.size() == 0. I don't see any reason to disallow this construct, especially since it takes a Standards expert to see that this is possibly illegal, but not std::string(vc.data(), vc.data() + vc.size()).
</p>
This is likely to go onto the LEWG's plate.
<p>
Bristol 2013: Defer to LEWG.
</p>
<p>
Filed as <a href="https://issues.isocpp.org/show_bug.cgi?id=39">LEWG Bug 39</a>, closing as Resolved on the EWG side.
</p>
<p><b>Wording available:</b></p>
<pre>
Requires: n < npos and either s shall not be a null pointer or n == 0.
</pre>
<hr>
<h3><a name="44"></a>44.
[tiny] variadic bind
</h3>
<p><b>Section:</b> 20.8.9 [bind] <b>Status:</b> <a href="ewg-active.html#Resolved">Resolved</a>
<b>Submitter:</b> Chris Jefferson <b>Opened:</b> 2013-01-25 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#Resolved">Resolved</a> status.</p>
<p><b>Discussion:</b></p>
<p>
As more variadic functions work their way into my C++ code, I'm getting increasingly annoyed that there isn't a variadic bind.
There is a tiny bit of annoyance on exactly what to use. There seems to me to be 2 sensible choices (other people may have others)
<pre>
1) _args : Use all otherwise unnamed arguments.
2) _3onwards : All arguments from the 3rd onwards.
</pre>
I haven't personally found a need for multiple ranges of variadic arguments, or more complicated chopping (such as getting the last few arguments), and I'd want to hopefully keep this simple if possible!
</p>
<p>
Bristol 2013: Defer to LEWG.
</p>
<p>
Filed as <a href="https://issues.isocpp.org/show_bug.cgi?id=40">LEWG Bug 40</a>, closing as Resolved on the EWG side.
</p>
<hr>
<h3><a name="45"></a>45.
[tiny] Type Trait is_range<T>
</h3>
<p><b>Section:</b> 20.9.4.3 [meta.unary.prop] <b>Status:</b> <a href="ewg-active.html#Resolved">Resolved</a>
<b>Submitter:</b> Nevin Liber <b>Opened:</b> 2013-02-05 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#meta.unary.prop">issues</a> in [meta.unary.prop].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#Resolved">Resolved</a> status.</p>
<p><b>Discussion:</b></p>
<p>
I'd like to have an is_range<T, R = void> type trait, which derives from true_type if and only if T can be used in range-based for, and *__begin is convertible to R (where R == void means don't bother checking this condition).
</p>
<p>
Bristol 2013: Submitter is encouraged to proceed and present to LWG. Apparently LEWG doesn't handle these.
</p>
<p>
Filed as <a href="https://issues.isocpp.org/show_bug.cgi?id=41">LEWG Bug 41</a>, closing as Resolved on the EWG side.
</p>
<hr>
<h3><a name="46"></a>46.
[tiny] Type Trait is_final<T>
</h3>
<p><b>Section:</b> 20.9.4.3 [meta.unary.prop] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Nevin Liber <b>Opened:</b> 2013-02-05 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#meta.unary.prop">issues</a> in [meta.unary.prop].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
I'd like to have an is_final<T> type trait, which is true if and only if T is a final type.
</p>
<p>
Bristol 2013: Submitter is encouraged to proceed and present to LWG. Apparently LEWG doesn't handle these.
</p>
<p>
Voted into C++14 in Issaquah 2014 as the resolution of
<a href="http://cplusplus.github.io/LWG/lwg-toc.html#2112">LWG issue 2112</a>.
</p>
<hr>
<h3><a name="61"></a>61.
N3653, N3605 Member initializers and aggregates
</h3>
<p><b>Section:</b> 8.5.1 [dcl.init.aggr] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Ville Voutilainen <b>Opened:</b> 2013-03-15 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#dcl.init.aggr">issues</a> in [dcl.init.aggr].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3605.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3605.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3653.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3653.html</a>
</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3653.</p>
<hr>
<h3><a name="62"></a>62.
N3648, N3610 Generic lambda-capture initializers, supporting capture-by-move
</h3>
<p><b>Section:</b> 5.1.2 [expr.prim.lambda] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Ville Voutilainen <b>Opened:</b> 2013-03-15 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#expr.prim.lambda">issues</a> in [expr.prim.lambda].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3610.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3610.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3648.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3648.html</a>
</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3648.</p>
<hr>
<h3><a name="63"></a>63.
N4152 uncaught_exceptions, N3614 unwinding_exception
</h3>
<p><b>Section:</b> 15.5 [except.special] <b>Status:</b> <a href="ewg-active.html#WP">WP</a>
<b>Submitter:</b> Herb Sutter <b>Opened:</b> 2013-03-11 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#WP">WP</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4152.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4152.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3614.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3614.pdf</a>
</p>
<p>
Bristol 2013: Voutilainen pointed out that there are previous proposals on similar facilities (http://open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2952.html), and that there's existing practice that is different from this proposal (existing practice returns an int, not a bool). Stroustrup thought that he would need convincing examples about the int, and thought that the facility in general needs better motivation. Voutilainen said that it would be best to create a revisions/synthesis paper that covers the existing practice and the previous proposals and improves the motivational examples.
</p>
<p>
Author is encouraged to revise.
</p>
<p>
In Chicago 2013, Voutilainen said he plans to work on this issue and create
a follow-up paper for C++17.
</p>
<p>
Adopted into the working draft in Urbana, as N4259.
</p>
<hr>
<h3><a name="64"></a>64.
N3651, N3615 Constexpr Variable Templates, N3552 Introducing Object Aliases
</h3>
<p><b>Section:</b> 14.1 [temp.param] <b>Status:</b> <a href="ewg-active.html#C++14">C++14</a>
<b>Submitter:</b> Gabriel Dos Reis <b>Opened:</b> 2013-03-18 <b>Last modified:</b> 2015-05-22</p>
<p><b>View other</b> <a href="ewg-index-open.html#temp.param">active issues</a> in [temp.param].</p>
<p><b>View all other</b> <a href="ewg-index.html#temp.param">issues</a> in [temp.param].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#C++14">C++14</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3552.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3552.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3615.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3615.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3651.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3651.pdf</a>
</p>
<p>Accepted into the Working Draft in Bristol 2013, as N3651.</p>
<hr>
<h3><a name="67"></a>67.
[tiny] Unspecialized std::tuple_size should be defined
</h3>
<p><b>Section:</b> 20.4.1 [tuple.general] <b>Status:</b> <a href="ewg-active.html#Resolved">Resolved</a>
<b>Submitter:</b> Nevin Liber <b>Opened:</b> 2013-03-19 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#Resolved">Resolved</a> status.</p>
<p><b>Discussion:</b></p>
<p>
In 20.4.1p2, the unspecialized std::tuple_size is undefined. It would be a lot more useful if it were defined as an empty struct; that way, it can be used with enable_if for determining whether or not it is valid to use tuple_size, tuple_element and get on the corresponding data structure.
</p>
<p>
This should go to LEWG.
</p>
<p>
Filed as <a href="https://issues.isocpp.org/show_bug.cgi?id=42">LEWG Bug 42</a>, closing as Resolved on the EWG side.
</p>
<hr>
<h3><a name="80"></a>80.
N3846 Extending static_assert
</h3>
<p><b>Section:</b> 7 [dcl.dcl] <b>Status:</b> <a href="ewg-active.html#WP">WP</a>
<b>Submitter:</b> Walter E. Brown <b>Opened:</b> 2014-01-01 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#dcl.dcl">issues</a> in [dcl.dcl].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#WP">WP</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3846.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3846.pdf</a>
</p>
<p>
Issaquah 2014: EWG discussed the paper, and found preference towards
option 3, which allows implementations to use useful messages, but
doesn't force them to document what they provide, so it was
seen superior to the other alternatives. The proposal is expected
to go forward to Core, and it has wording already.
</p>
<p>
Adopted into the working draft in Urbana,as N3928.
</p>
<p><b>Wording available:</b></p>
The paper contains the proposed wording.
<hr>
<h3><a name="82"></a>82.
N4180 SG5 Transactional Memory Support for C++ Update, N3919, N3859, N3718 Transactional Memory Support for C++
</h3>
<p><b>Section:</b> 1.10 [intro.multithread] <b>Status:</b> <a href="ewg-active.html#WP">WP</a>
<b>Submitter:</b> M. Wong, V. Luchangco, J. Maurer, M. Moir, et al. <b>Opened:</b> 2014-01-20 <b>Last modified:</b> 2015-05-22</p>
<p><b>View other</b> <a href="ewg-index-open.html#intro.multithread">active issues</a> in [intro.multithread].</p>
<p><b>View all other</b> <a href="ewg-index.html#intro.multithread">issues</a> in [intro.multithread].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#WP">WP</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4180.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4180.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3919.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3919.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3859.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3859.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3718.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2013/n3718.pdf</a>
</p>
<p>
Issaquah 2014: EWG discussed the paper, and found consensus
to move the proposal forward to a Technical Specification.
</p>
<p>
Accepted for creation of a Technical Specification in Urbana, as N4272 and N4265.
</p>
<hr>
<h3><a name="113"></a>113.
N4196 Attributes for namespaces and enumerators, [tiny] Core issue 1657, Attributes for namespaces and enumerators
</h3>
<p><b>Section:</b> 7.3.1 [namespace.def] <b>Status:</b> <a href="ewg-active.html#WP">WP</a>
<b>Submitter:</b> Richard Smith <b>Opened:</b> 2013-08-26 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#WP">WP</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4196.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4196.html</a>
</p>
<p>
See <a href="http://open-std.org/JTC1/SC22/WG21/docs/cwg_toc.html#1657">Core issue 1657</a>.
</p>
<p>
Issaquah 2014: EWG wants to point out that it's important to remember to consider inline namespaces
and anonymous namespaces, and that the rationale for both namespaces and enumerators is [[deprecated]].
</p>
<p>Discussed in Rapperswil 2014. Smith is encouraged to write a proposal
for EWG review, EWG expects to send it towards CWG without much ado.</p>
<p>
Adopted into the working draft in Urbana, as N4266.
</p>
<hr>
<h3><a name="119"></a>119. N4197 Adding u8 character literals, [tiny] Why no u8 character literals?
</h3>
<p><b>Section:</b> 2.14.3 [lex.ccon] <b>Status:</b> <a href="ewg-active.html#WP">WP</a>
<b>Submitter:</b> Richard Smith <b>Opened:</b> 2014-04-14 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all issues with</b> <a href="ewg-status.html#WP">WP</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4197.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4197.html</a>
</p>
<p>
The discussion thread started at [c++std-ext-14798].
</p>
<p>
We have five encoding-prefixes for string-literals (none, L, u8, u, U) but only four for character literals -- the missing one is u8 for character literals.
</p>
<p>
This matters for implementations where the narrow execution character set is not ASCII. In such a case, u8 character literals would provide an ideal way to write character literals with guaranteed ASCII encoding (the single-code-unit u8 encodings are exactly ASCII), but... we don't provide them. Instead, the best one can do is something like this:
<pre>
char x_ascii = { u'x' };
</pre>
... where we'll get a narrowing error if the codepoint doesn't fit in a 'char'. (Note that this is not quite the same as u8'x', which would give us an error if the codepoint was not representable as a single code unit in UTF-8.)
</p>
<p>
Is there a good reason for omitting this (useful and natural) functionality?
</p>
<p>Discussed in Rapperswil 2014. EWG considers this to be an improvement, and encourages the author to take a proposal with wording to CWG. It's expected that Smith can do so without a separate EWG review.</p>
<p>
Voted into the working draft in Urbana, as N4267.
</p>
<hr>
<h3><a name="121"></a>121. N4086, N3981 Removing trigraphs??!, N4210 IBM comment on preparing for a Trigraph-adverse future in C++17
</h3>
<p><b>Section:</b> 2.2 [lex.phases] <b>Status:</b> <a href="ewg-active.html#WP">WP</a>
<b>Submitter:</b> Richard Smith <b>Opened:</b> 2014-05-06 <b>Last modified:</b> 2015-05-22</p>
<p><b>View all other</b> <a href="ewg-index.html#lex.phases">issues</a> in [lex.phases].</p>
<p><b>View all issues with</b> <a href="ewg-status.html#WP">WP</a> status.</p>
<p><b>Discussion:</b></p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4086.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4086.html</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4210.pdf">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n4210.pdf</a>
</p>
<p>
<a href="http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3981.html">http://open-std.org/JTC1/SC22/WG21/docs/papers/2014/n3981.html</a>
</p>
<p><b>Wording available:</b></p>
<p>
The paper contains the proposed wording.
</p>
<p>
Discussed in Rapperswil 2014. IBM continues to oppose.
</p>
<p>Straw poll:</p>
<p>SF 9, WF 6, N 6, WA 3, SA 2.</p>
<p>Another poll, no neutral option:</p>
<p>SF 10, WF 9, WA 3, SA 3.</p>
<p>Deprecate/Remove/Status Quo, three-way poll:</p>
<p>5/16/6. Removal is still by far the strongest. </p>
<p>The proposal goes forward to CWG. CWG has already reviewed it and designated it ready for voting in Urbana.</p>