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Add testcase of PR c++/92542, already fixed.
[official-gcc.git] / libstdc++-v3 / doc / html / manual / bugs.html
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2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Bugs</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><meta name="keywords" content="ISO C++, library" /><meta name="keywords" content="ISO C++, runtime, library" /><link rel="home" href="../index.html" title="The GNU C++ Library" /><link rel="up" href="status.html" title="Chapter 1. Status" /><link rel="prev" href="license.html" title="License" /><link rel="next" href="setup.html" title="Chapter 2. Setup" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Bugs</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="license.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td width="20%" align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.status.bugs"></a>Bugs</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.impl"></a>Implementation Bugs</h3></div></div></div><p>
3 Information on known bugs, details on efforts to fix them, and
4 fixed bugs are all available as part of the <a class="link" href="https://gcc.gnu.org/bugs/" target="_top">GCC bug tracking system</a>,
5 under the component <span class="quote">“<span class="quote">libstdc++</span>”</span>.
6 </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.iso"></a>Standard Bugs</h3></div></div></div><p>
7 Everybody's got issues. Even the C++ Standard Library.
8 </p><p>
9 The Library Working Group, or LWG, is the ISO subcommittee responsible
10 for making changes to the library. They periodically publish an
11 Issues List containing problems and possible solutions. As they reach
12 a consensus on proposed solutions, we often incorporate the solution.
13 </p><p>
14 Here are the issues which have resulted in code changes to the library.
15 The links are to the full version of the Issues List.
16 You can read the full version online
17 at the <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/" target="_top">ISO C++
18 Committee homepage</a>.
19 </p><p>
20 If a DR is not listed here, we may simply not have gotten to
21 it yet; feel free to submit a patch. Search the
22 <code class="filename">include</code> and
23 <code class="filename">src</code>
24 directories for appearances of
25 <code class="constant">_GLIBCXX_RESOLVE_LIB_DEFECTS</code> for examples
26 of style. Note that we usually do not make changes to the
27 code until an issue has reached <a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-active.html#DR" target="_top">DR</a> status.
28 </p><div class="variablelist"><dl class="variablelist"><dt><a id="manual.bugs.dr5"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#5" target="_top">5</a>:
29 <span class="emphasis"><em>string::compare specification questionable</em></span>
30 </span></dt><dd><p>This should be two overloaded functions rather than a single function.
31 </p></dd><dt><a id="manual.bugs.dr17"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#17" target="_top">17</a>:
32 <span class="emphasis"><em>Bad bool parsing</em></span>
33 </span></dt><dd><p>Apparently extracting Boolean values was messed up...
34 </p></dd><dt><a id="manual.bugs.dr19"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#19" target="_top">19</a>:
35 <span class="emphasis"><em>"Noconv" definition too vague</em></span>
36 </span></dt><dd><p>If <code class="code">codecvt::do_in</code> returns <code class="code">noconv</code> there are
37 no changes to the values in <code class="code">[to, to_limit)</code>.
38 </p></dd><dt><a id="manual.bugs.dr22"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#22" target="_top">22</a>:
39 <span class="emphasis"><em>Member open vs flags</em></span>
40 </span></dt><dd><p>Re-opening a file stream does <span class="emphasis"><em>not</em></span> clear the state flags.
41 </p></dd><dt><a id="manual.bugs.dr23"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#23" target="_top">23</a>:
42 <span class="emphasis"><em>Num_get overflow result</em></span>
43 </span></dt><dd><p>Implement the proposed resolution.
44 </p></dd><dt><a id="manual.bugs.dr25"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#25" target="_top">25</a>:
45 <span class="emphasis"><em>String operator&lt;&lt; uses width() value wrong</em></span>
46 </span></dt><dd><p>Padding issues.
47 </p></dd><dt><a id="manual.bugs.dr48"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#48" target="_top">48</a>:
48 <span class="emphasis"><em>Use of non-existent exception constructor</em></span>
49 </span></dt><dd><p>An instance of <code class="code">ios_base::failure</code> is constructed instead.
50 </p></dd><dt><a id="manual.bugs.dr49"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#49" target="_top">49</a>:
51 <span class="emphasis"><em>Underspecification of ios_base::sync_with_stdio</em></span>
52 </span></dt><dd><p>The return type is the <span class="emphasis"><em>previous</em></span> state of synchronization.
53 </p></dd><dt><a id="manual.bugs.dr50"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#50" target="_top">50</a>:
54 <span class="emphasis"><em>Copy constructor and assignment operator of ios_base</em></span>
55 </span></dt><dd><p>These members functions are declared <code class="code">private</code> and are
56 thus inaccessible. Specifying the correct semantics of
57 "copying stream state" was deemed too complicated.
58 </p></dd><dt><a id="manual.bugs.dr60"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#60" target="_top">60</a>:
59 <span class="emphasis"><em>What is a formatted input function?</em></span>
60 </span></dt><dd><p>This DR made many widespread changes to <code class="code">basic_istream</code>
61 and <code class="code">basic_ostream</code> all of which have been implemented.
62 </p></dd><dt><a id="manual.bugs.dr63"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#63" target="_top">63</a>:
63 <span class="emphasis"><em>Exception-handling policy for unformatted output</em></span>
64 </span></dt><dd><p>Make the policy consistent with that of formatted input, unformatted
65 input, and formatted output.
66 </p></dd><dt><a id="manual.bugs.dr68"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#68" target="_top">68</a>:
67 <span class="emphasis"><em>Extractors for char* should store null at end</em></span>
68 </span></dt><dd><p>And they do now. An editing glitch in the last item in the list of
69 [27.6.1.2.3]/7.
70 </p></dd><dt><a id="manual.bugs.dr74"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#74" target="_top">74</a>:
71 <span class="emphasis"><em>Garbled text for codecvt::do_max_length</em></span>
72 </span></dt><dd><p>The text of the standard was gibberish. Typos gone rampant.
73 </p></dd><dt><a id="manual.bugs.dr75"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#75" target="_top">75</a>:
74 <span class="emphasis"><em>Contradiction in codecvt::length's argument types</em></span>
75 </span></dt><dd><p>Change the first parameter to <code class="code">stateT&amp;</code> and implement
76 the new effects paragraph.
77 </p></dd><dt><a id="manual.bugs.dr83"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#83" target="_top">83</a>:
78 <span class="emphasis"><em>string::npos vs. string::max_size()</em></span>
79 </span></dt><dd><p>Safety checks on the size of the string should test against
80 <code class="code">max_size()</code> rather than <code class="code">npos</code>.
81 </p></dd><dt><a id="manual.bugs.dr90"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#90" target="_top">90</a>:
82 <span class="emphasis"><em>Incorrect description of operator&gt;&gt; for strings</em></span>
83 </span></dt><dd><p>The effect contain <code class="code">isspace(c,getloc())</code> which must be
84 replaced by <code class="code">isspace(c,is.getloc())</code>.
85 </p></dd><dt><a id="manual.bugs.dr91"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#91" target="_top">91</a>:
86 <span class="emphasis"><em>Description of operator&gt;&gt; and getline() for string&lt;&gt;
87 might cause endless loop</em></span>
88 </span></dt><dd><p>They behave as a formatted input function and as an unformatted
89 input function, respectively (except that <code class="code">getline</code> is
90 not required to set <code class="code">gcount</code>).
91 </p></dd><dt><a id="manual.bugs.dr103"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#103" target="_top">103</a>:
92 <span class="emphasis"><em>set::iterator is required to be modifiable, but this allows
93 modification of keys.</em></span>
94 </span></dt><dd><p>For associative containers where the value type is the same as
95 the key type, both <code class="code">iterator</code> and <code class="code">const_iterator
96 </code> are constant iterators.
97 </p></dd><dt><a id="manual.bugs.dr109"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#109" target="_top">109</a>:
98 <span class="emphasis"><em>Missing binders for non-const sequence elements</em></span>
99 </span></dt><dd><p>The <code class="code">binder1st</code> and <code class="code">binder2nd</code> didn't have an
100 <code class="code">operator()</code> taking a non-const parameter.
101 </p></dd><dt><a id="manual.bugs.dr110"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#110" target="_top">110</a>:
102 <span class="emphasis"><em>istreambuf_iterator::equal not const</em></span>
103 </span></dt><dd><p>This was not a const member function. Note that the DR says to
104 replace the function with a const one; we have instead provided an
105 overloaded version with identical contents.
106 </p></dd><dt><a id="manual.bugs.dr117"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#117" target="_top">117</a>:
107 <span class="emphasis"><em>basic_ostream uses nonexistent num_put member functions</em></span>
108 </span></dt><dd><p><code class="code">num_put::put()</code> was overloaded on the wrong types.
109 </p></dd><dt><a id="manual.bugs.dr118"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#118" target="_top">118</a>:
110 <span class="emphasis"><em>basic_istream uses nonexistent num_get member functions</em></span>
111 </span></dt><dd><p>Same as 117, but for <code class="code">num_get::get()</code>.
112 </p></dd><dt><a id="manual.bugs.dr129"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#129" target="_top">129</a>:
113 <span class="emphasis"><em>Need error indication from seekp() and seekg()</em></span>
114 </span></dt><dd><p>These functions set <code class="code">failbit</code> on error now.
115 </p></dd><dt><a id="manual.bugs.dr130"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#130" target="_top">130</a>:
116 <span class="emphasis"><em>Return type of container::erase(iterator) differs for associative containers</em></span>
117 </span></dt><dd><p>Make member <code class="code">erase</code> return iterator for <code class="code">set</code>, <code class="code">multiset</code>, <code class="code">map</code>, <code class="code">multimap</code>.
118 </p></dd><dt><a id="manual.bugs.dr136"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#136" target="_top">136</a>:
119 <span class="emphasis"><em>seekp, seekg setting wrong streams?</em></span>
120 </span></dt><dd><p><code class="code">seekp</code> should only set the output stream, and
121 <code class="code">seekg</code> should only set the input stream.
122 </p></dd><dt><a id="manual.bugs.dr167"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#167" target="_top">167</a>:
123 <span class="emphasis"><em>Improper use of traits_type::length()</em></span>
124 </span></dt><dd><p><code class="code">op&lt;&lt;</code> with a <code class="code">const char*</code> was
125 calculating an incorrect number of characters to write.
126 </p></dd><dt><a id="manual.bugs.dr169"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#169" target="_top">169</a>:
127 <span class="emphasis"><em>Bad efficiency of overflow() mandated</em></span>
128 </span></dt><dd><p>Grow efficiently the internal array object.
129 </p></dd><dt><a id="manual.bugs.dr171"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#171" target="_top">171</a>:
130 <span class="emphasis"><em>Strange seekpos() semantics due to joint position</em></span>
131 </span></dt><dd><p>Quite complex to summarize...
132 </p></dd><dt><a id="manual.bugs.dr181"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#181" target="_top">181</a>:
133 <span class="emphasis"><em>make_pair() unintended behavior</em></span>
134 </span></dt><dd><p>This function used to take its arguments as reference-to-const, now
135 it copies them (pass by value).
136 </p></dd><dt><a id="manual.bugs.dr195"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#195" target="_top">195</a>:
137 <span class="emphasis"><em>Should basic_istream::sentry's constructor ever set eofbit?</em></span>
138 </span></dt><dd><p>Yes, it can, specifically if EOF is reached while skipping whitespace.
139 </p></dd><dt><a id="manual.bugs.dr206"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#206" target="_top">206</a>:
140 <span class="emphasis"><em><code class="code">operator new(size_t, nothrow)</code> may become
141 unlinked to ordinary <code class="code">operator new</code> if ordinary
142 version replaced
143 </em></span>
144 </span></dt><dd><p>The <code class="code">nothrow</code> forms of new and delete were
145 changed to call the throwing forms, handling any exception by
146 catching it and returning a null pointer.
147 </p></dd><dt><a id="manual.bugs.dr211"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#211" target="_top">211</a>:
148 <span class="emphasis"><em>operator&gt;&gt;(istream&amp;, string&amp;) doesn't set failbit</em></span>
149 </span></dt><dd><p>If nothing is extracted into the string, <code class="code">op&gt;&gt;</code> now
150 sets <code class="code">failbit</code> (which can cause an exception, etc., etc.).
151 </p></dd><dt><a id="manual.bugs.dr214"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#214" target="_top">214</a>:
152 <span class="emphasis"><em>set::find() missing const overload</em></span>
153 </span></dt><dd><p>Both <code class="code">set</code> and <code class="code">multiset</code> were missing
154 overloaded find, lower_bound, upper_bound, and equal_range functions
155 for const instances.
156 </p></dd><dt><a id="manual.bugs.dr231"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#231" target="_top">231</a>:
157 <span class="emphasis"><em>Precision in iostream?</em></span>
158 </span></dt><dd><p>For conversion from a floating-point type, <code class="code">str.precision()</code>
159 is specified in the conversion specification.
160 </p></dd><dt><a id="manual.bugs.dr233"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#233" target="_top">233</a>:
161 <span class="emphasis"><em>Insertion hints in associative containers</em></span>
162 </span></dt><dd><p>Implement N1780, first check before then check after, insert as close
163 to hint as possible.
164 </p></dd><dt><a id="manual.bugs.dr235"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#235" target="_top">235</a>:
165 <span class="emphasis"><em>No specification of default ctor for reverse_iterator</em></span>
166 </span></dt><dd><p>The declaration of <code class="code">reverse_iterator</code> lists a default constructor.
167 However, no specification is given what this constructor should do.
168 </p></dd><dt><a id="manual.bugs.dr241"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#241" target="_top">241</a>:
169 <span class="emphasis"><em>Does unique_copy() require CopyConstructible and Assignable?</em></span>
170 </span></dt><dd><p>Add a helper for forward_iterator/output_iterator, fix the existing
171 one for input_iterator/output_iterator to not rely on Assignability.
172 </p></dd><dt><a id="manual.bugs.dr243"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#243" target="_top">243</a>:
173 <span class="emphasis"><em>get and getline when sentry reports failure</em></span>
174 </span></dt><dd><p>Store a null character only if the character array has a non-zero size.
175 </p></dd><dt><a id="manual.bugs.dr251"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#251" target="_top">251</a>:
176 <span class="emphasis"><em>basic_stringbuf missing allocator_type</em></span>
177 </span></dt><dd><p>This nested typedef was originally not specified.
178 </p></dd><dt><a id="manual.bugs.dr253"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#253" target="_top">253</a>:
179 <span class="emphasis"><em>valarray helper functions are almost entirely useless</em></span>
180 </span></dt><dd><p>Make the copy constructor and copy-assignment operator declarations
181 public in gslice_array, indirect_array, mask_array, slice_array; provide
182 definitions.
183 </p></dd><dt><a id="manual.bugs.dr265"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#265" target="_top">265</a>:
184 <span class="emphasis"><em>std::pair::pair() effects overly restrictive</em></span>
185 </span></dt><dd><p>The default ctor would build its members from copies of temporaries;
186 now it simply uses their respective default ctors.
187 </p></dd><dt><a id="manual.bugs.dr266"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#266" target="_top">266</a>:
188 <span class="emphasis"><em>bad_exception::~bad_exception() missing Effects clause</em></span>
189 </span></dt><dd><p>The <code class="code">bad_</code>* classes no longer have destructors (they
190 are trivial), since no description of them was ever given.
191 </p></dd><dt><a id="manual.bugs.dr271"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#271" target="_top">271</a>:
192 <span class="emphasis"><em>basic_iostream missing typedefs</em></span>
193 </span></dt><dd><p>The typedefs it inherits from its base classes can't be used, since
194 (for example) <code class="code">basic_iostream&lt;T&gt;::traits_type</code> is ambiguous.
195 </p></dd><dt><a id="manual.bugs.dr275"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#275" target="_top">275</a>:
196 <span class="emphasis"><em>Wrong type in num_get::get() overloads</em></span>
197 </span></dt><dd><p>Similar to 118.
198 </p></dd><dt><a id="manual.bugs.dr280"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#280" target="_top">280</a>:
199 <span class="emphasis"><em>Comparison of reverse_iterator to const reverse_iterator</em></span>
200 </span></dt><dd><p>Add global functions with two template parameters.
201 (NB: not added for now a templated assignment operator)
202 </p></dd><dt><a id="manual.bugs.dr292"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#292" target="_top">292</a>:
203 <span class="emphasis"><em>Effects of a.copyfmt (a)</em></span>
204 </span></dt><dd><p>If <code class="code">(this == &amp;rhs)</code> do nothing.
205 </p></dd><dt><a id="manual.bugs.dr300"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#300" target="_top">300</a>:
206 <span class="emphasis"><em>List::merge() specification incomplete</em></span>
207 </span></dt><dd><p>If <code class="code">(this == &amp;x)</code> do nothing.
208 </p></dd><dt><a id="manual.bugs.dr303"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#303" target="_top">303</a>:
209 <span class="emphasis"><em>Bitset input operator underspecified</em></span>
210 </span></dt><dd><p>Basically, compare the input character to
211 <code class="code">is.widen(0)</code> and <code class="code">is.widen(1)</code>.
212 </p></dd><dt><a id="manual.bugs.dr305"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#305" target="_top">305</a>:
213 <span class="emphasis"><em>Default behavior of codecvt&lt;wchar_t, char,
214 mbstate_t&gt;::length()</em></span>
215 </span></dt><dd><p>Do not specify what <code class="code">codecvt&lt;wchar_t, char,
216 mbstate_t&gt;::do_length</code> must return.
217 </p></dd><dt><a id="manual.bugs.dr328"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#328" target="_top">328</a>:
218 <span class="emphasis"><em>Bad sprintf format modifier in
219 money_put&lt;&gt;::do_put()</em></span>
220 </span></dt><dd><p>Change the format string to "%.0Lf".
221 </p></dd><dt><a id="manual.bugs.dr365"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#365" target="_top">365</a>:
222 <span class="emphasis"><em>Lack of const-qualification in clause 27</em></span>
223 </span></dt><dd><p>Add const overloads of <code class="code">is_open</code>.
224 </p></dd><dt><a id="manual.bugs.dr387"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#387" target="_top">387</a>:
225 <span class="emphasis"><em>std::complex over-encapsulated</em></span>
226 </span></dt><dd><p>Add the <code class="code">real(T)</code> and <code class="code">imag(T)</code>
227 members; in C++11 mode, also adjust the existing
228 <code class="code">real()</code> and <code class="code">imag()</code> members and
229 free functions.
230 </p></dd><dt><a id="manual.bugs.dr389"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#389" target="_top">389</a>:
231 <span class="emphasis"><em>Const overload of valarray::operator[] returns
232 by value</em></span>
233 </span></dt><dd><p>Change it to return a <code class="code">const T&amp;</code>.
234 </p></dd><dt><a id="manual.bugs.dr396"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#396" target="_top">396</a>:
235 <span class="emphasis"><em>what are characters zero and one</em></span>
236 </span></dt><dd><p>Implement the proposed resolution.
237 </p></dd><dt><a id="manual.bugs.dr402"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#402" target="_top">402</a>:
238 <span class="emphasis"><em>Wrong new expression in [some_]allocator::construct</em></span>
239 </span></dt><dd><p>Replace "new" with "::new".
240 </p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#408" target="_top">408</a>:
241 <span class="emphasis"><em>
242 Is vector&lt;reverse_iterator&lt;char*&gt; &gt; forbidden?
243 </em></span>
244 </span></dt><dd><p>Tweak the debug-mode checks in _Safe_iterator.
245 </p></dd><dt><a id="manual.bugs.dr409"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#409" target="_top">409</a>:
246 <span class="emphasis"><em>Closing an fstream should clear the error state</em></span>
247 </span></dt><dd><p>Have <code class="code">open</code> clear the error flags.
248 </p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#431" target="_top">431</a>:
249 <span class="emphasis"><em>Swapping containers with unequal allocators</em></span>
250 </span></dt><dd><p>Implement Option 3, as per N1599.
251 </p></dd><dt><a id="manual.bugs.dr432"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#432" target="_top">432</a>:
252 <span class="emphasis"><em>stringbuf::overflow() makes only one write position
253 available</em></span>
254 </span></dt><dd><p>Implement the resolution, beyond DR 169.
255 </p></dd><dt><a id="manual.bugs.dr434"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#434" target="_top">434</a>:
256 <span class="emphasis"><em>bitset::to_string() hard to use</em></span>
257 </span></dt><dd><p>Add three overloads, taking fewer template arguments.
258 </p></dd><dt><a id="manual.bugs.dr438"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#438" target="_top">438</a>:
259 <span class="emphasis"><em>Ambiguity in the "do the right thing" clause</em></span>
260 </span></dt><dd><p>Implement the resolution, basically cast less.
261 </p></dd><dt><a id="manual.bugs.dr445"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#445" target="_top">445</a>:
262 <span class="emphasis"><em>iterator_traits::reference unspecified for some iterator categories</em></span>
263 </span></dt><dd><p>Change <code class="code">istreambuf_iterator::reference</code> in C++11 mode.
264 </p></dd><dt><a id="manual.bugs.dr453"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#453" target="_top">453</a>:
265 <span class="emphasis"><em>basic_stringbuf::seekoff need not always fail for an empty stream</em></span>
266 </span></dt><dd><p>Don't fail if the next pointer is null and newoff is zero.
267 </p></dd><dt><a id="manual.bugs.dr455"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#455" target="_top">455</a>:
268 <span class="emphasis"><em>cerr::tie() and wcerr::tie() are overspecified</em></span>
269 </span></dt><dd><p>Initialize cerr tied to cout and wcerr tied to wcout.
270 </p></dd><dt><a id="manual.bugs.dr464"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#464" target="_top">464</a>:
271 <span class="emphasis"><em>Suggestion for new member functions in standard containers</em></span>
272 </span></dt><dd><p>Add <code class="code">data()</code> to <code class="code">std::vector</code> and
273 <code class="code">at(const key_type&amp;)</code> to <code class="code">std::map</code>.
274 </p></dd><dt><a id="manual.bugs.dr467"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#467" target="_top">467</a>:
275 <span class="emphasis"><em>char_traits::lt(), compare(), and memcmp()</em></span>
276 </span></dt><dd><p>Change <code class="code">lt</code>.
277 </p></dd><dt><a id="manual.bugs.dr508"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#508" target="_top">508</a>:
278 <span class="emphasis"><em>Bad parameters for ranlux64_base_01</em></span>
279 </span></dt><dd><p>Fix the parameters.
280 </p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#512" target="_top">512</a>:
281 <span class="emphasis"><em>Seeding subtract_with_carry_01 from a single unsigned long</em></span>
282 </span></dt><dd><p>Construct a <code class="code">linear_congruential</code> engine and seed with it.
283 </p></dd><dt><span class="term"><a class="link" href="../ext/lwg-closed.html#526" target="_top">526</a>:
284 <span class="emphasis"><em>Is it undefined if a function in the standard changes in
285 parameters?</em></span>
286 </span></dt><dd><p>Use &amp;value.
287 </p></dd><dt><a id="manual.bugs.dr538"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#538" target="_top">538</a>:
288 <span class="emphasis"><em>241 again: Does unique_copy() require CopyConstructible
289 and Assignable?</em></span>
290 </span></dt><dd><p>In case of input_iterator/output_iterator rely on Assignability of
291 input_iterator' value_type.
292 </p></dd><dt><a id="manual.bugs.dr539"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#539" target="_top">539</a>:
293 <span class="emphasis"><em>partial_sum and adjacent_difference should mention
294 requirements</em></span>
295 </span></dt><dd><p>We were almost doing the right thing, just use std::move
296 in adjacent_difference.
297 </p></dd><dt><a id="manual.bugs.dr541"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#541" target="_top">541</a>:
298 <span class="emphasis"><em>shared_ptr template assignment and void</em></span>
299 </span></dt><dd><p>Add an auto_ptr&lt;void&gt; specialization.
300 </p></dd><dt><a id="manual.bugs.dr543"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#543" target="_top">543</a>:
301 <span class="emphasis"><em>valarray slice default constructor</em></span>
302 </span></dt><dd><p>Follow the straightforward proposed resolution.
303 </p></dd><dt><a id="manual.bugs.dr550"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#550" target="_top">550</a>:
304 <span class="emphasis"><em>What should the return type of pow(float,int) be?</em></span>
305 </span></dt><dd><p>In C++11 mode, remove the pow(float,int), etc., signatures.
306 </p></dd><dt><a id="manual.bugs.dr586"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#586" target="_top">586</a>:
307 <span class="emphasis"><em>string inserter not a formatted function</em></span>
308 </span></dt><dd><p>Change it to be a formatted output function (i.e. catch exceptions).
309 </p></dd><dt><a id="manual.bugs.dr596"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#596" target="_top">596</a>:
310 <span class="emphasis"><em>27.8.1.3 Table 112 omits "a+" and "a+b" modes</em></span>
311 </span></dt><dd><p>Add the missing modes to fopen_mode.
312 </p></dd><dt><a id="manual.bugs.dr630"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#630" target="_top">630</a>:
313 <span class="emphasis"><em>arrays of valarray</em></span>
314 </span></dt><dd><p>Implement the simple resolution.
315 </p></dd><dt><a id="manual.bugs.dr660"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#660" target="_top">660</a>:
316 <span class="emphasis"><em>Missing bitwise operations</em></span>
317 </span></dt><dd><p>Add the missing operations.
318 </p></dd><dt><a id="manual.bugs.dr691"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#691" target="_top">691</a>:
319 <span class="emphasis"><em>const_local_iterator cbegin, cend missing from TR1</em></span>
320 </span></dt><dd><p>In C++11 mode add cbegin(size_type) and cend(size_type)
321 to the unordered containers.
322 </p></dd><dt><a id="manual.bugs.dr693"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#693" target="_top">693</a>:
323 <span class="emphasis"><em>std::bitset::all() missing</em></span>
324 </span></dt><dd><p>Add it, consistently with the discussion.
325 </p></dd><dt><a id="manual.bugs.dr695"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#695" target="_top">695</a>:
326 <span class="emphasis"><em>ctype&lt;char&gt;::classic_table() not accessible</em></span>
327 </span></dt><dd><p>Make the member functions table and classic_table public.
328 </p></dd><dt><a id="manual.bugs.dr696"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#696" target="_top">696</a>:
329 <span class="emphasis"><em>istream::operator&gt;&gt;(int&amp;) broken</em></span>
330 </span></dt><dd><p>Implement the straightforward resolution.
331 </p></dd><dt><a id="manual.bugs.dr761"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#761" target="_top">761</a>:
332 <span class="emphasis"><em>unordered_map needs an at() member function</em></span>
333 </span></dt><dd><p>In C++11 mode, add at() and at() const.
334 </p></dd><dt><a id="manual.bugs.dr775"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#775" target="_top">775</a>:
335 <span class="emphasis"><em>Tuple indexing should be unsigned?</em></span>
336 </span></dt><dd><p>Implement the int -&gt; size_t replacements.
337 </p></dd><dt><a id="manual.bugs.dr776"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#776" target="_top">776</a>:
338 <span class="emphasis"><em>Undescribed assign function of std::array</em></span>
339 </span></dt><dd><p>In C++11 mode, remove assign, add fill.
340 </p></dd><dt><a id="manual.bugs.dr781"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#781" target="_top">781</a>:
341 <span class="emphasis"><em>std::complex should add missing C99 functions</em></span>
342 </span></dt><dd><p>In C++11 mode, add std::proj.
343 </p></dd><dt><a id="manual.bugs.dr809"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#809" target="_top">809</a>:
344 <span class="emphasis"><em>std::swap should be overloaded for array types</em></span>
345 </span></dt><dd><p>Add the overload.
346 </p></dd><dt><a id="manual.bugs.dr853"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#853" target="_top">853</a>:
347 <span class="emphasis"><em>to_string needs updating with zero and one</em></span>
348 </span></dt><dd><p>Update / add the signatures.
349 </p></dd><dt><a id="manual.bugs.dr865"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#865" target="_top">865</a>:
350 <span class="emphasis"><em>More algorithms that throw away information</em></span>
351 </span></dt><dd><p>The traditional HP / SGI return type and value is blessed
352 by the resolution of the DR.
353 </p></dd><dt><a id="manual.bugs.dr1339"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#1339" target="_top">1339</a>:
354 <span class="emphasis"><em>uninitialized_fill_n should return the end of its range</em></span>
355 </span></dt><dd><p>Return the end of the filled range.
356 </p></dd><dt><a id="manual.bugs.dr2021"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2021" target="_top">2021</a>:
357 <span class="emphasis"><em>Further incorrect uses of <code class="code">result_of</code></em></span>
358 </span></dt><dd><p>Correctly decay types in signature of <code class="code">std::async</code>.
359 </p></dd><dt><a id="manual.bugs.dr2049"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2049" target="_top">2049</a>:
360 <span class="emphasis"><em><code class="code">is_destructible</code> underspecified</em></span>
361 </span></dt><dd><p>Handle non-object types.
362 </p></dd><dt><a id="manual.bugs.dr2056"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2056" target="_top">2056</a>:
363 <span class="emphasis"><em>future_errc enums start with value 0 (invalid value for broken_promise)</em></span>
364 </span></dt><dd><p>Reorder enumerators.
365 </p></dd><dt><a id="manual.bugs.dr2059"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2059" target="_top">2059</a>:
366 <span class="emphasis"><em>C++0x ambiguity problem with map::erase</em></span>
367 </span></dt><dd><p>Add additional overloads.
368 </p></dd><dt><a id="manual.bugs.dr2062"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2062" target="_top">2062</a>:
369 <span class="emphasis"><em>2062. Effect contradictions w/o no-throw guarantee of <code class="code">std::function</code> swaps</em></span>
370 </span></dt><dd><p>Add <code class="code">noexcept</code> to swap functions.
371 </p></dd><dt><a id="manual.bugs.dr2063"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2063" target="_top">2063</a>:
372 <span class="emphasis"><em>Contradictory requirements for string move assignment</em></span>
373 </span></dt><dd><p>Respect propagation trait for move assignment.
374 </p></dd><dt><a id="manual.bugs.dr2064"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2064" target="_top">2064</a>:
375 <span class="emphasis"><em>More noexcept issues in basic_string</em></span>
376 </span></dt><dd><p>Add noexcept to the comparison operators.
377 </p></dd><dt><a id="manual.bugs.dr2067"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2067" target="_top">2067</a>:
378 <span class="emphasis"><em>packaged_task should have deleted copy c'tor with const parameter</em></span>
379 </span></dt><dd><p>Fix signatures.
380 </p></dd><dt><a id="manual.bugs.dr2101"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2101" target="_top">2101</a>:
381 <span class="emphasis"><em>Some transformation types can produce impossible types</em></span>
382 </span></dt><dd><p>Use the referenceable type concept.
383 </p></dd><dt><a id="manual.bugs.dr2106"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2106" target="_top">2106</a>:
384 <span class="emphasis"><em>move_iterator wrapping iterators returning prvalues</em></span>
385 </span></dt><dd><p>Change the <code class="code">reference</code> type.
386 </p></dd><dt><a id="manual.bugs.dr2108"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2108" target="_top">2108</a>:
387 <span class="emphasis"><em>No way to identify allocator types that always compare equal</em></span>
388 </span></dt><dd><p>Define and use <code class="code">is_always_equal</code> even for C++11.
389 </p></dd><dt><a id="manual.bugs.dr2118"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2118" target="_top">2118</a>:
390 <span class="emphasis"><em><code class="code">unique_ptr</code> for array does not support cv qualification conversion of actual argument</em></span>
391 </span></dt><dd><p>Adjust constraints to allow safe conversions.
392 </p></dd><dt><a id="manual.bugs.dr2127"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2127" target="_top">2127</a>:
393 <span class="emphasis"><em>Move-construction with <code class="code">raw_storage_iterator</code></em></span>
394 </span></dt><dd><p>Add assignment operator taking an rvalue.
395 </p></dd><dt><a id="manual.bugs.dr2132"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2132" target="_top">2132</a>:
396 <span class="emphasis"><em><code class="code">std::function</code> ambiguity</em></span>
397 </span></dt><dd><p>Constrain the constructor to only accept callable types.
398 </p></dd><dt><a id="manual.bugs.dr2141"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2141" target="_top">2141</a>:
399 <span class="emphasis"><em><code class="code">common_type</code> trait produces reference types</em></span>
400 </span></dt><dd><p>Use <code class="code">decay</code> for the result type.
401 </p></dd><dt><a id="manual.bugs.dr2144"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2144" target="_top">2144</a>:
402 <span class="emphasis"><em>Missing <code class="code">noexcept</code> specification in <code class="code">type_index</code></em></span>
403 </span></dt><dd><p>Add <code class="code">noexcept</code>
404 </p></dd><dt><a id="manual.bugs.dr2145"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2145" target="_top">2145</a>:
405 <span class="emphasis"><em><code class="code">error_category</code> default constructor</em></span>
406 </span></dt><dd><p>Declare a public constexpr constructor.
407 </p></dd><dt><a id="manual.bugs.dr2162"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2162" target="_top">2162</a>:
408 <span class="emphasis"><em><code class="code">allocator_traits::max_size</code> missing <code class="code">noexcept</code></em></span>
409 </span></dt><dd><p>Add <code class="code">noexcept</code>.
410 </p></dd><dt><a id="manual.bugs.dr2187"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2187" target="_top">2187</a>:
411 <span class="emphasis"><em><code class="code">vector&lt;bool&gt;</code> is missing <code class="code">emplace</code> and <code class="code">emplace_back</code> member functions</em></span>
412 </span></dt><dd><p>Add <code class="code">emplace</code> and <code class="code">emplace_back</code> member functions.
413 </p></dd><dt><a id="manual.bugs.dr2192"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2192" target="_top">2192</a>:
414 <span class="emphasis"><em>Validity and return type of <code class="code">std::abs(0u)</code> is unclear</em></span>
415 </span></dt><dd><p>Move all declarations to a common header and remove the
416 generic <code class="code">abs</code> which accepted unsigned arguments.
417 </p></dd><dt><a id="manual.bugs.dr2196"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2196" target="_top">2196</a>:
418 <span class="emphasis"><em>Specification of <code class="code">is_*[copy/move]_[constructible/assignable]</code> unclear for non-referencable types</em></span>
419 </span></dt><dd><p>Use the referenceable type concept.
420 </p></dd><dt><a id="manual.bugs.dr2212"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2212" target="_top">2212</a>:
421 <span class="emphasis"><em><code class="code">tuple_size</code> for <code class="code">const pair</code> request <code class="code">&lt;tuple&gt;</code> header</em></span>
422 </span></dt><dd><p>The <code class="code">tuple_size</code> and <code class="code">tuple_element</code>
423 partial specializations are defined in <code class="code">&lt;utility&gt;</code> which
424 is included by <code class="code">&lt;array&gt;</code>.
425 </p></dd><dt><a id="manual.bugs.dr2296"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2296" target="_top">2296</a>:
426 <span class="emphasis"><em><code class="code">std::addressof</code> should be constexpr</em></span>
427 </span></dt><dd><p>Use <code class="code">__builtin_addressof</code> and add
428 <code class="code">constexpr</code> to <code class="code">addressof</code> for C++17 and later.
429 </p></dd><dt><a id="manual.bugs.dr2306"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2306" target="_top">2306</a>:
430 <span class="emphasis"><em><code class="code">match_results::reference</code> should be <code class="code">value_type&amp;</code>, not <code class="code">const value_type&amp;</code></em></span>
431 </span></dt><dd><p>Change typedef.
432 </p></dd><dt><a id="manual.bugs.dr2313"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2313" target="_top">2313</a>:
433 <span class="emphasis"><em><code class="code">tuple_size</code> should always derive from <code class="code">integral_constant&lt;size_t, N&gt;</code></em></span>
434 </span></dt><dd><p>Update definitions of the partial specializations for const and volatile types.
435 </p></dd><dt><a id="manual.bugs.dr2328"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2328" target="_top">2328</a>:
436 <span class="emphasis"><em>Rvalue stream extraction should use perfect forwarding</em></span>
437 </span></dt><dd><p>Use perfect forwarding for right operand.
438 </p></dd><dt><a id="manual.bugs.dr2329"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2329" target="_top">2329</a>:
439 <span class="emphasis"><em><code class="code">regex_match()/regex_search()</code> with <code class="code">match_results</code> should forbid temporary strings</em></span>
440 </span></dt><dd><p>Add deleted overloads for rvalue strings.
441 </p></dd><dt><a id="manual.bugs.dr2332"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2332" target="_top">2332</a>:
442 <span class="emphasis"><em><code class="code">regex_iterator/regex_token_iterator</code> should forbid temporary regexes</em></span>
443 </span></dt><dd><p>Add deleted constructors.
444 </p></dd><dt><a id="manual.bugs.dr2354"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2354" target="_top">2332</a>:
445 <span class="emphasis"><em>Unnecessary copying when inserting into maps with braced-init syntax</em></span>
446 </span></dt><dd><p>Add overloads of <code class="code">insert</code> taking <code class="code">value_type&amp;&amp;</code> rvalues.
447 </p></dd><dt><a id="manual.bugs.dr2399"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2399" target="_top">2399</a>:
448 <span class="emphasis"><em><code class="code">shared_ptr</code>'s constructor from <code class="code">unique_ptr</code> should be constrained</em></span>
449 </span></dt><dd><p>Constrain the constructor to require convertibility.
450 </p></dd><dt><a id="manual.bugs.dr2400"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2400" target="_top">2400</a>:
451 <span class="emphasis"><em><code class="code">shared_ptr</code>'s <code class="code">get_deleter()</code> should use <code class="code">addressof()</code></em></span>
452 </span></dt><dd><p>Use <code class="code">addressof</code>.
453 </p></dd><dt><a id="manual.bugs.dr2401"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2401" target="_top">2401</a>:
454 <span class="emphasis"><em><code class="code">std::function</code> needs more <code class="code">noexcept</code></em></span>
455 </span></dt><dd><p>Add <code class="code">noexcept</code> to the assignment and comparisons.
456 </p></dd><dt><a id="manual.bugs.dr2407"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2407" target="_top">2407</a>:
457 <span class="emphasis"><em><code class="code">packaged_task(allocator_arg_t, const Allocator&amp;, F&amp;&amp;)</code>
458 should neither be constrained nor <code class="code">explicit</code>
459 </em></span>
460 </span></dt><dd><p>Remove <code class="code">explicit</code> from the constructor.
461 </p></dd><dt><a id="manual.bugs.dr2408"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2408" target="_top">2408</a>:
462 <span class="emphasis"><em>SFINAE-friendly
463 <code class="code">common_type</code>/<code class="code">iterator_traits</code>
464 is missing in C++14
465 </em></span>
466 </span></dt><dd><p>Make <code class="code">iterator_traits</code> empty if any of the
467 types is not present in the iterator.
468 Make <code class="code">common_type&lt;&gt;</code> empty.
469 </p></dd><dt><a id="manual.bugs.dr2415"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2415" target="_top">2415</a>:
470 <span class="emphasis"><em>Inconsistency between <code class="code">unique_ptr</code> and <code class="code">shared_ptr</code></em></span>
471 </span></dt><dd><p>Create empty an <code class="code">shared_ptr</code> from an empty
472 <code class="code">unique_ptr</code>.
473 </p></dd><dt><a id="manual.bugs.dr2418"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2418" target="_top">2418</a>:
474 <span class="emphasis"><em><code class="code">apply</code> does not work with member pointers</em></span>
475 </span></dt><dd><p>Use <code class="code">mem_fn</code> for member pointers.
476 </p></dd><dt><a id="manual.bugs.dr2440"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2440" target="_top">2440</a>:
477 <span class="emphasis"><em><code class="code">seed_seq::size()</code> should be <code class="code">noexcept</code></em></span>
478 </span></dt><dd><p>Add <code class="code">noexcept</code>.
479 </p></dd><dt><a id="manual.bugs.dr2441"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2441" target="_top">2441</a>:
480 <span class="emphasis"><em>Exact-width atomic typedefs should be provided</em></span>
481 </span></dt><dd><p>Define the typedefs.
482 </p></dd><dt><a id="manual.bugs.dr2442"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2442" target="_top">2442</a>:
483 <span class="emphasis"><em><code class="code">call_once()</code> shouldn't <code class="code">DECAY_COPY()</code></em></span>
484 </span></dt><dd><p>Remove indirection through call wrapper that made copies
485 of arguments and forward arguments straight to <code class="code">std::invoke</code>.
486 </p></dd><dt><a id="manual.bugs.dr2454"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2454" target="_top">2454</a>:
487 <span class="emphasis"><em>Add <code class="code">raw_storage_iterator::base()</code> member
488 </em></span>
489 </span></dt><dd><p>Add the <code class="code">base()</code> member function.
490 </p></dd><dt><a id="manual.bugs.dr2455"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2455" target="_top">2455</a>:
491 <span class="emphasis"><em>Allocator default construction should be allowed to throw
492 </em></span>
493 </span></dt><dd><p>Make <code class="code">noexcept</code> specifications conditional.
494 </p></dd><dt><a id="manual.bugs.dr2458"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2458" target="_top">2458</a>:
495 <span class="emphasis"><em>N3778 and new library deallocation signatures
496 </em></span>
497 </span></dt><dd><p>Remove unused overloads.
498 </p></dd><dt><a id="manual.bugs.dr2459"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2459" target="_top">2459</a>:
499 <span class="emphasis"><em><code class="code">std::polar</code> should require a non-negative rho
500 </em></span>
501 </span></dt><dd><p>Add debug mode assertion.
502 </p></dd><dt><a id="manual.bugs.dr2465"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2465" target="_top">2465</a>:
503 <span class="emphasis"><em>SFINAE-friendly <code class="code">common_type</code> is nearly impossible
504 to specialize correctly and regresses key functionality
505 </em></span>
506 </span></dt><dd><p>Detect whether <code class="code">decay_t</code> changes either type
507 and use the decayed types if so.
508 </p></dd><dt><a id="manual.bugs.dr2466"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2466" target="_top">2466</a>:
509 <span class="emphasis"><em><code class="code">allocator_traits::max_size()</code> default behavior is incorrect
510 </em></span>
511 </span></dt><dd><p>Divide by the object type.
512 </p></dd><dt><a id="manual.bugs.dr2484"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2484" target="_top">2484</a>:
513 <span class="emphasis"><em><code class="code">rethrow_if_nested()</code> is doubly unimplementable
514 </em></span>
515 </span></dt><dd><p>Avoid using <code class="code">dynamic_cast</code> when it would be
516 ill-formed.
517 </p></dd><dt><a id="manual.bugs.dr2537"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2537" target="_top">2537</a>:
518 <span class="emphasis"><em>Constructors for <code class="code">priority_queue</code> taking allocators
519 should call <code class="code">make_heap</code>
520 </em></span>
521 </span></dt><dd><p>Call <code class="code">make_heap</code>.
522 </p></dd><dt><a id="manual.bugs.dr2566"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2566" target="_top">2566</a>:
523 <span class="emphasis"><em>Requirements on the first template parameter of container adaptors
524 </em></span>
525 </span></dt><dd><p>Add static assertions to enforce the requirement.
526 </p></dd><dt><a id="manual.bugs.dr2583"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2583" target="_top">2583</a>:
527 <span class="emphasis"><em>There is no way to supply an allocator for <code class="code">basic_string(str, pos)</code>
528 </em></span>
529 </span></dt><dd><p>Add new constructor.
530 </p></dd><dt><a id="manual.bugs.dr2586"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2586" target="_top">2586</a>:
531 <span class="emphasis"><em>Wrong value category used in <code class="code">scoped_allocator_adaptor::construct()</code>
532 </em></span>
533 </span></dt><dd><p>Change internal helper for uses-allocator construction
534 to always check using const lvalue allocators.
535 </p></dd><dt><a id="manual.bugs.dr2684"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2684" target="_top">2684</a>:
536 <span class="emphasis"><em><code class="code">priority_queue</code> lacking comparator typedef
537 </em></span>
538 </span></dt><dd><p>Define the <code class="code">value_compare</code> typedef.
539 </p></dd><dt><a id="manual.bugs.dr2735"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2735" target="_top">2735</a>:
540 <span class="emphasis"><em><code class="code">std::abs(short)</code>,
541 <code class="code">std::abs(signed char)</code> and others should return
542 <code class="code">int</code> instead of <code class="code">double</code> in order to be
543 compatible with C++98 and C
544 </em></span>
545 </span></dt><dd><p>Resolved by the changes for
546 <a class="link" href="bugs.html#manual.bugs.dr2192">2192</a>.
547 </p></dd><dt><a id="manual.bugs.dr2770"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2770" target="_top">2770</a>:
548 <span class="emphasis"><em><code class="code">tuple_size&lt;const T&gt;</code> specialization is not
549 SFINAE compatible and breaks decomposition declarations
550 </em></span>
551 </span></dt><dd><p>Safely detect <code class="code">tuple_size&lt;T&gt;::value</code> and
552 only use it if valid.
553 </p></dd><dt><a id="manual.bugs.dr2781"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2781" target="_top">2781</a>:
554 <span class="emphasis"><em>Contradictory requirements for <code class="code">std::function</code>
555 and <code class="code">std::reference_wrapper</code>
556 </em></span>
557 </span></dt><dd><p>Remove special handling for <code class="code">reference_wrapper</code>
558 arguments and store them directly as the target object.
559 </p></dd><dt><a id="manual.bugs.dr2802"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2802" target="_top">2802</a>:
560 <span class="emphasis"><em>Add noexcept to several <code class="code">shared_ptr</code> related
561 functions
562 </em></span>
563 </span></dt><dd><p>Add noexcept.
564 </p></dd><dt><a id="manual.bugs.dr2873"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2873" target="_top">2873</a>:
565 <span class="emphasis"><em><code class="code">shared_ptr</code> constructor requirements for a deleter
566 </em></span>
567 </span></dt><dd><p>Use rvalues for deleters.
568 </p></dd><dt><a id="manual.bugs.dr2921"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2921" target="_top">2921</a>:
569 <span class="emphasis"><em><code class="code">packaged_task</code> and type-erased allocators
570 </em></span>
571 </span></dt><dd><p>For C++17 mode, remove the constructors taking
572 an allocator argument.
573 </p></dd><dt><a id="manual.bugs.dr2942"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2942" target="_top">2942</a>:
574 <span class="emphasis"><em>LWG 2873's resolution missed
575 <code class="code">weak_ptr::owner_before</code>
576 </em></span>
577 </span></dt><dd><p>Add noexcept.
578 </p></dd><dt><a id="manual.bugs.dr2996"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2996" target="_top">2996</a>:
579 <span class="emphasis"><em>Missing rvalue overloads for
580 <code class="code">shared_ptr</code> operations
581 </em></span>
582 </span></dt><dd><p>Add additional constructor and cast overloads.
583 </p></dd><dt><a id="manual.bugs.dr2993"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2993" target="_top">2993</a>:
584 <span class="emphasis"><em><code class="code">reference_wrapper&lt;T&gt;</code> conversion from <code class="code">T&amp;&amp;</code>
585 </em></span>
586 </span></dt><dd><p>Replaced the constructors with a constrained template,
587 to prevent participation in overload resolution when not valid.
588 </p></dd><dt><a id="manual.bugs.dr3074"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#3074" target="_top">3074</a>:
589 <span class="emphasis"><em>Non-member functions for <code class="code">valarray</code> should only deduce from the <code class="code">valarray</code>
590 </em></span>
591 </span></dt><dd><p>Change scalar operands to be non-deduced context, so that
592 they will allow conversions from other types to the value_type.
593 </p></dd><dt><a id="manual.bugs.dr3076"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#3076" target="_top">3076</a>:
594 <span class="emphasis"><em><code class="code">basic_string</code> CTAD ambiguity
595 </em></span>
596 </span></dt><dd><p>Change constructors to constrained templates.
597 </p></dd><dt><a id="manual.bugs.dr3096"></a><span class="term"><a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#3096" target="_top">3096</a>:
598 <span class="emphasis"><em><code class="code">path::lexically_relative</code> is confused by trailing slashes
599 </em></span>
600 </span></dt><dd><p>Implement the fix for trailing slashes.
601 </p></dd></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="license.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="status.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">License </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 2. Setup</td></tr></table></div></body></html>
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