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<h1>C Defect Report Support in Clang</h1>
<!--*************************************************************************-->
<h2 id="cdr">C defect report implementation status</h2>
<p>This page tracks which C defect reports are implemented within Clang.</p>
<p>The implementation status for defect reports against the C Standard are
currently under investigation. Any defect report whose status in Clang is
currently unknown will be marked in <span class="unknown">magenta</span>.</p>
<p>The <a href="https://github.com/llvm/llvm-project/issues/">LLVM bug tracker</a> uses
the "c", "c99", "c11", "c17", and "c2x" labels to track known bugs with Clang's language
conformance.</p>
<table width="689" border="1" cellspacing="0">
<tr>
<th>Number</th>
<th>Status</th>
<th>Issue title</th>
<th>Available in Clang?</th>
</tr>
<tr id="1">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_001.html">1</a></td>
<td>C89</td>
<td>Do functions return values by copying?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="2">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_002.html">2</a></td>
<td>NAD</td>
<td>Subclause 6.8.3.2: Semantics of #</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="3">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_003.html">3</a></td>
<td>NAD</td>
<td>Subclause 6.1.8: Preprocessing numbers</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="4">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_004.html">4</a></td>
<td>NAD</td>
<td>Are multiple definitions of unused identifiers with external linkage permitted?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="5">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_005.html">5</a></td>
<td>NAD</td>
<td>May a conforming implementation define and recognize a pragma which would change the semantics of the language?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="6">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_006.html">6</a></td>
<td>C89</td>
<td>It is unclear how the strtoul function behaves when presented with a subject sequence that begins with a minus sign</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="7">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_007.html">7</a></td>
<td>NAD</td>
<td>Are declarations of the form struct-or-union identifier ; permitted after the identifier tag has already been declared?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="8">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_008.html">8</a></td>
<td>NAD</td>
<td>Can a conforming C compiler to perform dead-store elimination?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="9">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_009.html">9</a></td>
<td>C89</td>
<td>Use of typedef names in parameter declarations</td>
<td class="none" align="center">No</td>
</tr>
<tr id="10">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_010.html">10</a></td>
<td>NAD</td>
<td>Is a typedef to an incomplete type legal?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="11">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_011.html">11</a></td>
<td>C89</td>
<td>Merging of declarations for linked identifier</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="12">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_012.html">12</a></td>
<td>NAD</td>
<td>Is it valid to take the address of a dereferenced void pointer?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="13">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_013.html">13</a></td>
<td>C89</td>
<td>Compatible and composite function types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="14">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_014.html">14</a></td>
<td>C89</td>
<td>Issues with setjmp and fscanf descriptions</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="15">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_015.html">15</a></td>
<td>NAD</td>
<td>What is the promoted type of a plain int bit-field?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="16">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_016.html">16</a></td>
<td>C89</td>
<td>What does static storage duration do when zero for the type is not all zero bits?</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="17">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_017.html">17</a></td>
<td>C89</td>
<td>39 unrelated questions about C89</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="18">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_018.html">18</a></td>
<td>NAD</td>
<td>How does fscanf behave in the presence of multibyte characters?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="19">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_019.html">19</a></td>
<td>NAD</td>
<td>Definition of the term "printing character" and isgraph()</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="20">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_020.html">20</a></td>
<td>NAD</td>
<td>Is a compiler which allows the Relaxed Ref/Def linkage model to be considered a conforming compiler?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="21">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_021.html">21</a></td>
<td>C89</td>
<td>What is the result of: printf("%#.4o", 345);?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="22">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_022.html">22</a></td>
<td>C89</td>
<td>What is the result of: strtod("100ergs", &ptr);?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="23">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_023.html">23</a></td>
<td>NAD</td>
<td>what is the result of strtod("0.0e99999", &ptr);?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="24">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_024.html">24</a></td>
<td>NAD</td>
<td>In subclause 7.10.1.4 The strtod function: What does '"C" locale' mean?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="25">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_025.html">25</a></td>
<td>NAD</td>
<td>What is meant by 'representable floating-point value?'</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="26">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_026.html">26</a></td>
<td>NAD</td>
<td>Can a strictly conforming program contain a string literal with '$' or '@'?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="27">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_027.html">27</a></td>
<td>C89</td>
<td>Can there be characters in the character set that are not in the required source character set?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="28">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_028.html">28</a></td>
<td>NAD</td>
<td>Do object access rules apply to dynamically allocated objects?</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="29">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_029.html">29</a></td>
<td>NAD</td>
<td>Do two types have to have the same tag to be compatible?</td>
<td class="none" align="center">No</td>
</tr>
<tr id="30">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_030.html">30</a></td>
<td>NAD</td>
<td>Can 'sin(DBL_MAX)' result in 'errno' being set to 'EDOM'?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="31">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_031.html">31</a></td>
<td>NAD</td>
<td>Can constant expressions overflow?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="32">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_032.html">32</a></td>
<td>NAD</td>
<td>Must implementations diagnose extensions to the constant evaluation rules?</td>
<td class="none" align="center">No</td>
</tr>
<tr id="33">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_033.html">33</a></td>
<td>NAD</td>
<td>Conformance questions around 'shall' violations outside of constraints sections</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="34">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_034.html">34</a></td>
<td>C89</td>
<td>External declarations in different scopes</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="35">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_035.html">35</a></td>
<td>NAD</td>
<td>Questions about definition of functions without a prototype</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Tags declared directly within an identifier list are incorrectly scoped
to the prototype rather than to the function body.
</details>
</td>
</tr>
<tr id="36">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_036.html">36</a></td>
<td>NAD</td>
<td>May floating-point constants be represented with more precision than implied by its type?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="37">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_037.html">37</a></td>
<td>NAD</td>
<td>Questions about multibyte characters and Unicode</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="38">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_038.html">38</a></td>
<td>NAD</td>
<td>Questions about argument substitution during macro expansion</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="39">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_039.html">39</a></td>
<td>NAD</td>
<td>Questions about the "C" locale</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="40">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_040.html">40</a></td>
<td>NAD</td>
<td>9 unrelated questions about C89</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Question 6 has full support, the rest of the questions are currently unknown.
</details>
</td>
</tr>
<tr id="41">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_041.html">41</a></td>
<td>NAD</td>
<td>Do characters defined in 5.2.1 impact 7.3.1?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="42">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_042.html">42</a></td>
<td>NAD</td>
<td>On the behavior of library functions and overlapping objects</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="43">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_043.html">43</a></td>
<td>C89</td>
<td>On the definition of the NULL macro</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="44">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_044.html">44</a></td>
<td>NAD</td>
<td>On the result of the offsetof macro</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="45">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_045.html">45</a></td>
<td>NAD</td>
<td>Is the behavior of freopen defined when the file is invalid?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="46">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_046.html">46</a></td>
<td>NAD</td>
<td>Use of typedef names in parameter declarations</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="47">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_047.html">47</a></td>
<td>NAD</td>
<td>Questions about declaration conformance</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="48">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_048.html">48</a></td>
<td>NAD</td>
<td>Clarifications on the abort() function</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="49">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_049.html">49</a></td>
<td>C89</td>
<td>Can strxfrm() output more characters than were input?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="50">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_050.html">50</a></td>
<td>NAD</td>
<td>Do wide string literals implicitly include <stddef.h>?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="51">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_051.html">51</a></td>
<td>NAD</td>
<td>Question on pointer arithmetic</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="52">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_052.html">52</a></td>
<td>C89</td>
<td>Editorial corrections</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="53">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_053.html">53</a></td>
<td>C89</td>
<td>Accessing a pointer to a function with a prototype through a pointer to pointer to function without a prototype</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="54">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_054.html">54</a></td>
<td>C89</td>
<td>Can the string handling functions have a length of 0?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="55">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_055.html">55</a></td>
<td>C89</td>
<td>Signal handler macros should have distinct values</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="56">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_056.html">56</a></td>
<td>NAD</td>
<td>Floating-point representation precision requirements</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="57">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_057.html">57</a></td>
<td>NAD</td>
<td>Is there an integral type for every pointer?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="58">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_058.html">58</a></td>
<td>NAD</td>
<td>Is there a limit on the number of digits processed by scanf and strtdo?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="59">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_059.html">59</a></td>
<td>NAD</td>
<td>Do types have to be completed?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="60">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_060.html">60</a></td>
<td>C89</td>
<td>Array initialization from a string literal</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="61">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_061.html">61</a></td>
<td>NAD</td>
<td>Whitespace in scanf format string</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="62">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_062.html">62</a></td>
<td>NAD</td>
<td>Can the rename function be defined to fail?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="63">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_063.html">63</a></td>
<td>Dup</td>
<td>Floating-point representation precision requirements</td>
<td class="full" align="center">Duplicate of <a href="#56">56</a></td>
</tr>
<tr id="64">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_064.html">64</a></td>
<td>NAD</td>
<td>Null pointer constants</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="65">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_065.html">65</a></td>
<td>C89</td>
<td>Questions on locales</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="66">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_066.html">66</a></td>
<td>NAD</td>
<td>Another question on locales</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="67">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_067.html">67</a></td>
<td>NAD</td>
<td>Integer and integral type confusion</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="68">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_068.html">68</a></td>
<td>NAD</td>
<td>'char' and signed vs unsigned integer types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="69">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_069.html">69</a></td>
<td>NAD</td>
<td>Questions about the representation of integer types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="70">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_070.html">70</a></td>
<td>NAD</td>
<td>Interchangeability of function arguments</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="71">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_071.html">71</a></td>
<td>C89</td>
<td>Enumerated types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="72">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_072.html">72</a></td>
<td>NAD</td>
<td>Definition of object and pointer arithmetic</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="73">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_073.html">73</a></td>
<td>NAD</td>
<td>Definition of object and array access</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="74">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_074.html">74</a></td>
<td>NAD</td>
<td>Alignment and structure padding</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="75">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_075.html">75</a></td>
<td>NAD</td>
<td>Alignment of allocated memory</td>
<td class="na" align="center">N/A</td>
</tr>
<tr class="open" id="76">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_076.html">76</a></td>
<td>Open</td>
<td>Pointers to the end of arrays</td>
<td align="center">Not resolved</td>
</tr>
<tr id="77">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_077.html">77</a></td>
<td>NAD</td>
<td>Stability of addresses</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="78">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_078.html">78</a></td>
<td>NAD</td>
<td>Uniqueness of addresses</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="79">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_079.html">79</a></td>
<td>NAD</td>
<td>Constancy of system library function addresses</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="80">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_080.html">80</a></td>
<td>C89</td>
<td>Merging of string constants</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="81">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_081.html">81</a></td>
<td>NAD</td>
<td>Left shift operator</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="82">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_082.html">82</a></td>
<td>C89</td>
<td>Multiple varargs</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="83">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_083.html">83</a></td>
<td>C89</td>
<td>Use of library functions</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="84">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_084.html">84</a></td>
<td>NAD</td>
<td>Incomplete type in function declaration</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="85">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_085.html">85</a></td>
<td>C89</td>
<td>Returning from main</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="86">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_086.html">86</a></td>
<td>NAD</td>
<td>Object-like macros in system headers</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="87">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_087.html">87</a></td>
<td>NAD</td>
<td>Order of evaluation</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="88">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_088.html">88</a></td>
<td>NAD</td>
<td>Compatibility of incomplete types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="89">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_089.html">89</a></td>
<td>C89</td>
<td>Multiple definitions of macros</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="90">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_090.html">90</a></td>
<td>NAD</td>
<td>Multibyte characters in formats</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="91">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_091.html">91</a></td>
<td>NAD</td>
<td>Multibyte encodings</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="92">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_092.html">92</a></td>
<td>Dup</td>
<td>Partial initialization of strings</td>
<td class="full" align="center">Duplicate of <a href="#60">60</a></td>
</tr>
<tr id="93">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_093.html">93</a></td>
<td>C89</td>
<td>Reservation of identifiers</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="94">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_094.html">94</a></td>
<td>NAD</td>
<td>Are constraints on function return the same as assignment?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="95">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_095.html">95</a></td>
<td>NAD</td>
<td>Is initialization as constrained as assignment?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="96">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_096.html">96</a></td>
<td>NAD</td>
<td>Arrays of incomplete types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="97">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_097.html">97</a></td>
<td>Dup</td>
<td>Use of offsetof with an incomplete type</td>
<td class="full" align="center">Duplicate of <a href="#40">40</a></td>
</tr>
<tr id="98">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_098.html">98</a></td>
<td>NAD</td>
<td>Pre/post increment/decrement of function or incomplete types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="99">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_099.html">99</a></td>
<td>NAD</td>
<td>ANSI/ISO C Defect report #rfg6</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="100">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_100.html">100</a></td>
<td>Dup</td>
<td>Defect with the return statement</td>
<td class="full" align="center">Duplicate of <a href="#1">1</a></td>
</tr>
<tr id="101">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_101.html">101</a></td>
<td>C89</td>
<td>Type qualifiers and "as if by assignment"</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="102">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_102.html">102</a></td>
<td>NAD</td>
<td>Tag redeclaration constraints</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="103">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_103.html">103</a></td>
<td>NAD</td>
<td>Formal parameters of incomplete type</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="104">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_104.html">104</a></td>
<td>Dup</td>
<td>Incomplete tag types in a parameter list</td>
<td class="full" align="center">Duplicate of <a href="#84">84</a></td>
</tr>
<tr id="105">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_105.html">105</a></td>
<td>Dup</td>
<td>Precedence of requirements on compatible types</td>
<td class="full" align="center">Duplicate of <a href="#17">17</a></td>
</tr>
<tr id="106">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_106.html">106</a></td>
<td>NAD</td>
<td>When can you dereference a void pointer?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="107">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_107.html">107</a></td>
<td>NAD</td>
<td>Type requirements of the assert macro parameter</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="108">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_108.html">108</a></td>
<td>NAD</td>
<td>Can a macro identifier hide a keyword?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="109">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_109.html">109</a></td>
<td>NAD</td>
<td>Are undefined values and undefined behavior the same?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="110">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_110.html">110</a></td>
<td>Dup</td>
<td>Formal parameters having array-of-non-object types</td>
<td class="full" align="center">Duplicate of <a href="#47">47</a></td>
</tr>
<tr id="111">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_111.html">111</a></td>
<td>NAD</td>
<td>Conversion of pointer-to-qualified type values to type (void*) values</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="112">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_112.html">112</a></td>
<td>NAD</td>
<td>Null pointer constants and relational comparisons</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="113">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_113.html">113</a></td>
<td>NAD</td>
<td>Return expressions in functions declared to return qualified void</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="114">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_114.html">114</a></td>
<td>NAD</td>
<td>Initialization of multi-dimensional char array objects</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="115">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_115.html">115</a></td>
<td>NAD</td>
<td>Member declarators as declarators</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="116">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_116.html">116</a></td>
<td>NAD</td>
<td>Implicit unary & applied to register arrays</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="117">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_117.html">117</a></td>
<td>NAD</td>
<td>Abstract semantics, sequence points, and expression evaluation</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="118">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_118.html">118</a></td>
<td>C89</td>
<td>Completion point for enumerated types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="119">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_119.html">119</a></td>
<td>NAD</td>
<td>Initialization of multi-dimensional array objects</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="120">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_120.html">120</a></td>
<td>NAD</td>
<td>Semantics of assignment to (and initialization of) bit-fields</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="121">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_121.html">121</a></td>
<td>NAD</td>
<td>Conversions of pointer values to integral types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="122">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_122.html">122</a></td>
<td>Dup</td>
<td>Conversion/widening of bit-fields</td>
<td class="full" align="center">Duplicate of <a href="#15">15</a></td>
</tr>
<tr id="123">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_123.html">123</a></td>
<td>NAD</td>
<td>'Type categories' and qualified types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="124">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_124.html">124</a></td>
<td>C89</td>
<td>Casts to 'a void type' versus casts to 'the void type'</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="125">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_125.html">125</a></td>
<td>NAD</td>
<td>Using things declared as 'extern (qualified) void'</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="126">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_126.html">126</a></td>
<td>NAD</td>
<td>What does 'synonym' mean with respect to typedef names?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="127">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_127.html">127</a></td>
<td>Dup</td>
<td>Composite type of an enumerated type and an integral type</td>
<td class="full" align="center">Duplicate of <a href="#13">13</a></td>
</tr>
<tr id="128">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_128.html">128</a></td>
<td>NAD</td>
<td>Editorial issue relating to tag declarations in type specifiers</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="129">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_129.html">129</a></td>
<td>NAD</td>
<td>Tags and name spaces</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="130">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_130.html">130</a></td>
<td>NAD</td>
<td>Guarantees when writing text to a stream</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="131">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_131.html">131</a></td>
<td>C89</td>
<td>const member qualification and assignment</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="132">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_132.html">132</a></td>
<td>Dup</td>
<td>Can undefined behavior occur at translation time, or only at run time?</td>
<td class="full" align="center">Duplicate of <a href="#109">109</a></td>
</tr>
<tr id="133">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_133.html">133</a></td>
<td>NAD</td>
<td>Undefined behavior not previously listed in subclause G2</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="134">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_134.html">134</a></td>
<td>NAD</td>
<td>What is an 'error number' for strerror?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="135">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_135.html">135</a></td>
<td>NAD</td>
<td>Can the size argument to 'fwrite' be zero?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="136">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_136.html">136</a></td>
<td>NAD</td>
<td>'mktime' and time gaps</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="137">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_137.html">137</a></td>
<td>NAD</td>
<td>'printf' and negative floating point values</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="138">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_138.html">138</a></td>
<td>C89</td>
<td>Is there an allocated storage duration?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="139">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_139.html">139</a></td>
<td>C89</td>
<td>Compatibility of complete and incomplete types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="140">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_140.html">140</a></td>
<td>NAD</td>
<td>Behavior of 'setvbuf'</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="141">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_141.html">141</a></td>
<td>NAD</td>
<td>What is the meaning of EOF?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="142">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_142.html">142</a></td>
<td>C89</td>
<td>Reservation of macro names</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="143">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_143.html">143</a></td>
<td>C89</td>
<td>'fopen' modes</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="144">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_144.html">144</a></td>
<td>C89</td>
<td>Preprocessing of preprocessing directives</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="145">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_145.html">145</a></td>
<td>C89</td>
<td>Constant expressions</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="146">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_146.html">146</a></td>
<td>C89</td>
<td>Nugatory constraint</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="147">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_147.html">147</a></td>
<td>C89</td>
<td>Sequence points in library functions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="148">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_148.html">148</a></td>
<td>NAD</td>
<td>Defining library functions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="149">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_149.html">149</a></td>
<td>C89</td>
<td>The term "variable"</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="150">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_150.html">150</a></td>
<td>C89</td>
<td>Initialization of a char array from a string literal</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="151">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_151.html">151</a></td>
<td>C89</td>
<td>Behavior of 'printf' and flags</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="152">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_152.html">152</a></td>
<td>NAD</td>
<td>Can you 'longjmp' out of a signal handler?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="153">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_153.html">153</a></td>
<td>Dup</td>
<td>Can 'f()' be considered a call to a function-like macro with one empty argument?</td>
<td class="unknown" align="center">Duplicate of <a href="#3">3</a></td>
</tr>
<tr id="154">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_154.html">154</a></td>
<td>NAD</td>
<td>Consistency of implementation-defined values</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="155">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_155.html">155</a></td>
<td>C89</td>
<td>Zero-sized allocations</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="156">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_156.html">156</a></td>
<td>C89</td>
<td>Closed streams</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="157">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_157.html">157</a></td>
<td>C89</td>
<td>Legitimacy of type synonyms</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="158">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_158.html">158</a></td>
<td>C89</td>
<td>Null pointer conversions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="159">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_159.html">159</a></td>
<td>C89</td>
<td>Consistency of the C Standard Defects exist in the way the Standard refers to itself</td>
<td class="full" align="center">Yes</td>
</tr>
<tr class="open" id="160">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_160.html">160</a></td>
<td>Open</td>
<td>Reservation of identifiers</td>
<td align="center">Not resolved</td>
</tr>
<tr id="161">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_161.html">161</a></td>
<td>NAD</td>
<td>Details of reserved symbols</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="162">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_162.html">162</a></td>
<td>C89</td>
<td>'gmtime' and 'localtime'</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="163">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_163.html">163</a></td>
<td>C89</td>
<td>Undeclared identifiers</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="164">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_164.html">164</a></td>
<td>NAD</td>
<td>Bad declarations</td>
<td class="full" align="center">Yes</td>
</tr>
<tr class="open" id="165">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_165.html">165</a></td>
<td>C89</td>
<td>Tags and incomplete types</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="166">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_166.html">166</a></td>
<td>Open</td>
<td>Meaning of lvalue</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="167">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_167.html">167</a></td>
<td>Open</td>
<td>Consistency of the C Standard (Defect Report UK 015)</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="168">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_168.html">168</a></td>
<td>Open</td>
<td>Consistency of the C Standard (Defect Report UK 016)</td>
<td align="center">Not resolved</td>
</tr>
<tr id="169">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_169.html">169</a></td>
<td>NAD</td>
<td>Trigraphs</td>
<td class="full" align="center">Yes</td>
</tr>
<tr class="open" id="170">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_170.html">170</a></td>
<td>C89</td>
<td>Operators and punctuators</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="171">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_171.html">171</a></td>
<td>Open</td>
<td>Ranges of integral types</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="172">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_172.html">172</a></td>
<td>Open</td>
<td>Relational and equality operators</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="173">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_173.html">173</a></td>
<td>Open</td>
<td>Line numbers</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="174">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_174.html">174</a></td>
<td>Open</td>
<td>Implicit conversions</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="175">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_175.html">175</a></td>
<td>Open</td>
<td>Correction to Technical Corrigendum 1</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="176">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_176.html">176</a></td>
<td>Open</td>
<td>Diagnostics for #error</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="177">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_177.html">177</a></td>
<td>Open</td>
<td>Preprocessing directives</td>
<td align="center">Not resolved</td>
</tr>
<tr class="open" id="178">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_178.html">178</a></td>
<td>Open</td>
<td>Conformance with array members and allocations</td>
<td align="center">Not resolved</td>
</tr>
<tr id="201">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_201.htm">201</a></td>
<td>NAD</td>
<td>Integer types longer than long</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="202">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_202.htm">202</a></td>
<td>C99</td>
<td>Change return type of certain <fenv.h> functions</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="203">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_203.htm">203</a></td>
<td>C99</td>
<td>C locale conflict with ISO/IEC 9945-2</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="204">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_204.htm">204</a></td>
<td>C99</td>
<td>size_t and ptrdiff_t as a long long type</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="205">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_205.htm">205</a></td>
<td>NAD</td>
<td>New keyword __at_least</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="206">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_206.htm">206</a></td>
<td>NAD</td>
<td>Default argument conversion of float _Complex</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="207">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_207.htm">207</a></td>
<td>C99</td>
<td>Handling of imaginary types</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang detects use of the _Imaginary keyword but does not otherwise
support the type yet.
</details>
</td>
</tr>
<tr id="208">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_208.htm">208</a></td>
<td>C99</td>
<td>Ambiguity in initialization</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="209">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_209.htm">209</a></td>
<td>C99</td>
<td>Problem implementing INTN_C macros</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang provides these definitions in a freestanding compilation, but the
type of the value produced by <code>UINT8_C</code> and <code>UINT16_C</code>
is not the type after integer promotion per C99 7.18.4p3.
</details>
</td>
</tr>
<tr id="210">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_210.htm">210</a></td>
<td>C99</td>
<td>'fprintf' %a and %A conversions recommended practice</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="211">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_211.htm">211</a></td>
<td>C99</td>
<td>Accuracy of decimal string to/from "binary" (non-decimal) floating-point conversions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="212">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_212.htm">212</a></td>
<td>NAD</td>
<td>Binding of multibyte conversion state objects</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="213">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_213.htm">213</a></td>
<td>C99</td>
<td>Lacuna in 'mbrtowc'</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="214">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_214.htm">214</a></td>
<td>NAD</td>
<td>'atexit' function registration</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="215">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_215.htm">215</a></td>
<td>C99</td>
<td>Equality operators</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="216">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_216.htm">216</a></td>
<td>C99</td>
<td>Source character encodings</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="217">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_217.htm">217</a></td>
<td>NAD</td>
<td>'asctime' limits</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="218">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_218.htm">218</a></td>
<td>C99</td>
<td>Signs of non-numeric floating point values</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="219">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_219.htm">219</a></td>
<td>NAD</td>
<td>Effective types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="220">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_220.htm">220</a></td>
<td>C99</td>
<td>Definition of "decimal integer"</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="221">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_221.htm">221</a></td>
<td>NAD</td>
<td>Lacuna in pointer arithmetic</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="222">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_222.htm">222</a></td>
<td>C99</td>
<td>Partially initialized structures</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="223">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_223.htm">223</a></td>
<td>C99</td>
<td>'FP_FAST_FMAF' and 'FP_FAST_FMAL' should be integer constant</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="224">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_224.htm">224</a></td>
<td>C99</td>
<td>fpclassify return is not defined</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="225">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_225.htm">225</a></td>
<td>C99</td>
<td>strtod, strtof and strtold expected form of the subject sequence</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="226">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_226.htm">226</a></td>
<td>NAD</td>
<td>strftime references</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="227">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_227.htm">227</a></td>
<td>NAD</td>
<td>strftime %U, %V, and %W conversion specifiers</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="228">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_228.htm">228</a></td>
<td>C99</td>
<td>wmemcmp declaration in Annex B</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="229">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_229.htm">229</a></td>
<td>C99</td>
<td>localeconv() *_sep_by_space table entries issues</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="230">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_230.htm">230</a></td>
<td>C99</td>
<td>Enumerated type rank</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="231">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_231.htm">231</a></td>
<td>NAD</td>
<td>Semantics of text-line and non-directive</td>
<td class="none" align="center">No</td>
</tr>
<tr id="232">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_232.htm">232</a></td>
<td>C99</td>
<td>Typo in Annex I</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="233">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_233.htm">233</a></td>
<td>C99</td>
<td>%g, %G precision specification</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="234">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_234.htm">234</a></td>
<td>C99</td>
<td>Miscellaneous Typos</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="235">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_235.htm">235</a></td>
<td>C99</td>
<td>"C" locale collating behaviour not defined</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="236">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_236.htm">236</a></td>
<td>NAD</td>
<td>The interpretation of type based aliasing rule when applied to union objects or allocated objects</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="237">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_237.htm">237</a></td>
<td>NAD</td>
<td>Declarations using [static]</td>
<td class="none" align="center">No</td>
</tr>
<tr id="238">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_238.htm">238</a></td>
<td>C99</td>
<td>Decriptions of fma() overflow and underflow errors are missing</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="239">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_239.htm">239</a></td>
<td>C99</td>
<td>Annex F nexttoward description is inconsistent with 7.12.11.4 and F.9.8.3</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="240">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_240.htm">240</a></td>
<td>C99</td>
<td>lrint, llrint, lround, llround, and ilogb descriptions are not consistent for unrepresentable results</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="241">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_241.htm">241</a></td>
<td>C99</td>
<td>Make the base standard and Annex F consistent for pow(0, <0)</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="242">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_242.htm">242</a></td>
<td>C99</td>
<td>Make the base standard and Annex F consistent for logb(0)</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="243">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_243.htm">243</a></td>
<td>C99</td>
<td>Make the base standard and Annex F consistent for fmod(), remainder(), and remquo() for a zero divisor</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="244">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_244.htm">244</a></td>
<td>C99</td>
<td>tgamma(zero or negative integer) should be considered a pole error</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="245">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_245.htm">245</a></td>
<td>C99</td>
<td>Missing paragraph numbers</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="246">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_246.htm">246</a></td>
<td>NAD</td>
<td>Completion of declarators</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="247">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_247.htm">247</a></td>
<td>C99</td>
<td>Are values a form of behaviour?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="248">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_248.htm">248</a></td>
<td>C99</td>
<td>Limits are required for optional types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="249">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_249.htm">249</a></td>
<td>Dup</td>
<td>Lacuna applying C89:TC1 to C99</td>
<td class="none" align="center">Duplicate of <a href="#9">9</a></td>
</tr>
<tr id="250">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_250.htm">250</a></td>
<td>C99</td>
<td>Non-directives within macro arguments</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="251">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_251.htm">251</a></td>
<td>C99</td>
<td>Are struct fred and union fred the same type?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="252">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_252.htm">252</a></td>
<td>NAD</td>
<td>Incomplete argument types when calling non-prototyped functions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="253">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_253.htm">253</a></td>
<td>NAD</td>
<td>"overriding" in designated initializers</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="254">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_254.htm">254</a></td>
<td>NAD</td>
<td>mbtowc and partial characters</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="255">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_255.htm">255</a></td>
<td>NAD</td>
<td>Non-prototyped function calls and argument mismatches</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="256">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_256.htm">256</a></td>
<td>NAD</td>
<td>Multiple inclusion of headers</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="257">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_257.htm">257</a></td>
<td>NAD</td>
<td>Common initial sequences and related issues with unions</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="258">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_258.htm">258</a></td>
<td>NAD</td>
<td>Ordering of "defined" and macro replacement</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="259">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_259.htm">259</a></td>
<td>NAD</td>
<td>Macro invocations with no arguments</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="260">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_260.htm">260</a></td>
<td>NAD</td>
<td>Indeterminate values and identical representations</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="261">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_261.htm">261</a></td>
<td>NAD</td>
<td>Constant expressions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="262">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_262.htm">262</a></td>
<td>C99</td>
<td>Maximum size of bit fields</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="263">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_263.htm">263</a></td>
<td>C99</td>
<td>All-zero bits representations</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="264">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_264.htm">264</a></td>
<td>NAD</td>
<td>Graphic characters</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="265">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_265.htm">265</a></td>
<td>C99</td>
<td>Preprocessor arithmetic</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="266">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_266.htm">266</a></td>
<td>NAD</td>
<td>Overflow of sizeof</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="267">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_267.htm">267</a></td>
<td>C99</td>
<td>Typos in 5.1.2.3, 7.24.4.4.5, 7.24.6.1, 7.24.6.1</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="268">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_268.htm">268</a></td>
<td>C99</td>
<td>Jumps into iteration statements</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="269">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_269.htm">269</a></td>
<td>C99</td>
<td>Lacunae in exact-width integer types</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="270">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_270.htm">270</a></td>
<td>C99</td>
<td>wint_t is not the promoted version of wchar_t</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="271">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_271.htm">271</a></td>
<td>NAD</td>
<td>Lacuna in iswctype and towctrans</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="272">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_272.htm">272</a></td>
<td>C99</td>
<td>Type category</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="273">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_273.htm">273</a></td>
<td>C99</td>
<td>Meaning of __STDC_ISO_10646__</td>
<td class="full" align="center">
<details><summary>Yes</summary>
The compiler portion of this DR is implemented in Clang, but the
<code>__STDC_ISO_10646__</code> macro is not defined by Clang; the
standard library behavior factors into whether this macro can or cannot
be defined.
</details>
</td>
</tr>
<tr id="274">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_274.htm">274</a></td>
<td>C99</td>
<td>Meaning of "character" in <string.h> functions</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="275">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_275.htm">275</a></td>
<td>C99</td>
<td>Bitwise-OR of nothing</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="276">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_276.htm">276</a></td>
<td>C99</td>
<td>Orientation of perror</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="277">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_277.htm">277</a></td>
<td>NAD</td>
<td>Declarations within iteration statements</td>
<td class="none" align="center">No</td>
</tr>
<tr id="278">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_278.htm">278</a></td>
<td>C99</td>
<td>Lacuna in character encodings</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="279">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_279.htm">279</a></td>
<td>C99</td>
<td>Wide character code values for members of the basic character set</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="280">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_280.htm">280</a></td>
<td>NAD</td>
<td>struct tm, member tm_isdst, and mktime() in <time.h></td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="281">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_281.htm">281</a></td>
<td>C99</td>
<td>CLOCKS_PER_SEC should not be a constant expression</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="282">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_282.htm">282</a></td>
<td>C99</td>
<td>Flexible array members & struct padding</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="283">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_283.htm">283</a></td>
<td>C99</td>
<td>Accessing a non-current union member ("type punning")</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="284">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_284.htm">284</a></td>
<td>NAD</td>
<td>Does <math.h> define INT_MIN and INT_MAX?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="285">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_285.htm">285</a></td>
<td>C99</td>
<td>Conversion of an imaginary type to _Bool</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang detects use of the _Imaginary keyword but does not otherwise
support the type yet.
</details>
</td>
</tr>
<tr id="286">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_286.htm">286</a></td>
<td>C99</td>
<td>Correctly rounded and rounding direction/mode</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="287">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_287.htm">287</a></td>
<td>Dup</td>
<td>Floating-point status flags and sequence points</td>
<td class="unknown" align="center">Duplicate of <a href="#87">87</a></td>
</tr>
<tr id="288">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_288.htm">288</a></td>
<td>NAD</td>
<td>Deficiency on multibyte conversions</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="289">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_289.htm">289</a></td>
<td>C99</td>
<td>Function prototype with [restrict]</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="290">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_290.htm">290</a></td>
<td>C99</td>
<td>FLT_EVAL_METHOD and extra precision and/or range</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="291">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_291.htm">291</a></td>
<td>C99</td>
<td>Corrections to requirements on inexact floating-point exceptions</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="292">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_292.htm">292</a></td>
<td>C99</td>
<td>Use of the word variable</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="293">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_293.htm">293</a></td>
<td>C99</td>
<td>Typo in Standard - double complex instead of complex in an example</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="294">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_294.htm">294</a></td>
<td>NAD</td>
<td>Technical question on C99 restrict keyword</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="295">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_295.htm">295</a></td>
<td>C99</td>
<td>Incomplete types for function parameters</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="296">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_296.htm">296</a></td>
<td>C99</td>
<td>Is exp(INFINITY) overflow? A range error? A divide-by-zero exception? INFINITY without any errors?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="297">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_297.htm">297</a></td>
<td>C99</td>
<td>May FE_* floating-point exception flags have bits in common?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="298">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_298.htm">298</a></td>
<td>C99</td>
<td>Validity of constant in unsigned long long range</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang defines the behavior in this situation by automatically using
<code>long long</code> or <code>unsigned long long</code> as the
underlying type of the constant; however, Clang fails to diagnose the
extension in C89 mode with such constants.
</details>
</td>
</tr>
<tr id="299">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_299.htm">299</a></td>
<td>C99</td>
<td>Is cabs() a type-generic macro?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="300">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_300.htm">300</a></td>
<td>NAD</td>
<td>Translation-time expresssion evaluation</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="301">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_301.htm">301</a></td>
<td>NAD</td>
<td>Meaning of FE_* macros in <fenv.h></td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="302">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_302.htm">302</a></td>
<td>C99</td>
<td>6.10.2p5: Adding underscore to portable include file name character set</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="303">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_303.htm">303</a></td>
<td>C99</td>
<td>6.10p2: Breaking up the very long sentence describing preprocessing directive</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="304">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_304.htm">304</a></td>
<td>C99</td>
<td>Clarifying illegal tokens in #if directives</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="305">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_305.htm">305</a></td>
<td>C99</td>
<td>6.10.1p3: Clarifying handling of keywords in #if directives</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="306">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_306.htm">306</a></td>
<td>C99</td>
<td>6.10.3p9: Clarifying that rescanning applies to object-like macros</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="307">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_307.htm">307</a></td>
<td>C99</td>
<td>6.10.3p10: Clarifiying arguments vs. parameters</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="308">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_308.htm">308</a></td>
<td>C99</td>
<td>Clarify that source files et al. need not be "files"</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="309">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_309.htm">309</a></td>
<td>C99</td>
<td>Clarifying trigraph substitution</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="310">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_310.htm">310</a></td>
<td>C99</td>
<td>Add non-corner case example of trigraphs</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="311">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_311.htm">311</a></td>
<td>C99</td>
<td>Definition of variably modified types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="312">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_312.htm">312</a></td>
<td>C99</td>
<td>Meaning of "known constant size"</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="313">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_313.htm">313</a></td>
<td>NAD</td>
<td>Incomplete arrays of VLAs</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="314">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_314.htm">314</a></td>
<td>NAD</td>
<td>Cross-translation-unit tagged type compatibility</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="315">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_315.htm">315</a></td>
<td>C99</td>
<td>Implementation-defined bit-field types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="316">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_316.htm">316</a></td>
<td>NAD</td>
<td>Unprototyped function types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="317">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_317.htm">317</a></td>
<td>NAD</td>
<td>Function definitions with empty parentheses</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="318">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_318.htm">318</a></td>
<td>C99</td>
<td>(double)0.1f with FLT_EVAL_METHOD being 2</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="319">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_319.htm">319</a></td>
<td>NAD</td>
<td>printf("%a", 1.0) and trailing zeros</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="320">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_320.htm">320</a></td>
<td>C99</td>
<td>Scope of variably modified type</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="321">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_321.htm">321</a></td>
<td>C99</td>
<td>Wide character code values for members of the basic character set</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="322">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_322.htm">322</a></td>
<td>C99</td>
<td>Problem with TC2 Change #67 (Add perror to the list defining byte input/output functions)</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="323">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_323.htm">323</a></td>
<td>C99</td>
<td>Potential problems with TC2 #34, #35, and #36</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="324">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_324.htm">324</a></td>
<td>C99</td>
<td>Tokenization obscurities</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="325">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_325.htm">325</a></td>
<td>NAD</td>
<td>strerror()</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="326">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_326.htm">326</a></td>
<td>C99</td>
<td>asctime()</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="327">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_327.htm">327</a></td>
<td>C99</td>
<td>Italicize definition of variable length array type, add forward references</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="328">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_328.htm">328</a></td>
<td>C99</td>
<td>String literals in compound literal initialization</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang properly implements the use of string literals in a compound
literal initializer, but fails to diagnose use of a variably-modified
type at file scope. DR339 (about variably-modified types) is marked as
a duplicate of DR328.
</details>
</td>
</tr>
<tr id="329">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_329.htm">329</a></td>
<td>C99</td>
<td>Math functions and directed rounding</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="330">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_330.htm">330</a></td>
<td>C99</td>
<td>Externally visible exceptional conditions</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="331">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_331.htm">331</a></td>
<td>NAD</td>
<td>permit FE_DIVBYZERO when errno says EDOM</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="332">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_332.htm">332</a></td>
<td>C99</td>
<td>gets is generally unsafe</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="333">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_333.htm">333</a></td>
<td>C99</td>
<td>Missing Predefined Macro Name</td>
<td class="full" align="center">Yes</td>
</tr>
<tr class="open" id="334">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_334.htm">334</a></td>
<td>Open</td>
<td>Missing semantics of comparison macros</td>
<td align="center">Not resolved</td>
</tr>
<tr id="335">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_335.htm">335</a></td>
<td>NAD</td>
<td>_Bool bit-fields</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="336">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_336.htm">336</a></td>
<td>C99</td>
<td>What does TMP_MAX actually indicate?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="337">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_337.htm">337</a></td>
<td>C99</td>
<td>stdio.h macro definition problems</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="338">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_338.htm">338</a></td>
<td>C99</td>
<td>C99 seems to exclude indeterminate value from being an uninitialized register</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="339">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_339.htm">339</a></td>
<td>Dup</td>
<td>Variably modified compound literal</td>
<td class="partial" align="center">Duplicate of <a href="#328">328</a></td>
</tr>
<tr id="340">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_340.htm">340</a></td>
<td>C99</td>
<td>Composite types for variable-length arrays</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="341">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_341.htm">341</a></td>
<td>C99</td>
<td>[*] in abstract declarators</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="342">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_342.htm">342</a></td>
<td>Dup</td>
<td>VLAs and conditional expressions</td>
<td class="full" align="center">Duplicate of <a href="#340">340</a></td>
</tr>
<tr id="343">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_343.htm">343</a></td>
<td>C99</td>
<td>Initializing qualified wchar_t arrays</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="344">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_344.htm">344</a></td>
<td>C99</td>
<td>Casts in preprocessor conditional expressions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="345">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_345.htm">345</a></td>
<td>C99</td>
<td>Where does parameter scope start?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="400">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_400">400</a></td>
<td>C11</td>
<td>realloc with size zero problems</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="401">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_401">401</a></td>
<td>C11</td>
<td>"happens before" can not be cyclic</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="402">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_402">402</a></td>
<td>C11</td>
<td>Memory model coherence is not aligned with C++11</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="403">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_403">403</a></td>
<td>C11</td>
<td>malloc() and free() in the memory model</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="404">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_404">404</a></td>
<td>C11</td>
<td>Joke fragment remains in a footnote</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="405">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_405">405</a></td>
<td>C11</td>
<td>The mutex specification</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="406">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_406">406</a></td>
<td>C11</td>
<td>Visible sequences of side effects are redundant</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="407">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_407">407</a></td>
<td>C11</td>
<td>Memory ordering of atomics</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="408">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_408">408</a></td>
<td>NAD</td>
<td>Should locks provide intra-thread synchronization</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="409">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_409">409</a></td>
<td>C11</td>
<td>f(inf) is inf being a range error</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="410">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_410">410</a></td>
<td>C11</td>
<td>ilogb inconsistent with lrint, lround</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="411">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_411">411</a></td>
<td>C11</td>
<td>Predefined macro values</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="412">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_412">412</a></td>
<td>C11</td>
<td>#elif</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="413">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_413">413</a></td>
<td>NAD</td>
<td>Initialization</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="414">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_414">414</a></td>
<td>C11</td>
<td>Typos in 6.27 Threads <threads.h></td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="415">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_415">415</a></td>
<td>C11</td>
<td>Missing divide by zero entry in Annex J</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="416">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_416">416</a></td>
<td>C11</td>
<td>tss_t destruction unspecified</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="417">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_417">417</a></td>
<td>C11</td>
<td>Annex J not updated with necessary aligned_alloc entries</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="418">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_418">418</a></td>
<td>NAD</td>
<td>Possible defect report: fmod(0.,NaN) and fmod(NaN,infinity)</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="419">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_419">419</a></td>
<td>C11</td>
<td>Generic Functions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="420">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_420">420</a></td>
<td>NAD</td>
<td>Sytax error in specification of for-statement</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="421">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_421">421</a></td>
<td>NAD</td>
<td>Initialization of atomic_flag</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="422">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_422">422</a></td>
<td>NAD</td>
<td>Initialization of atomic types</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="423">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_423">423</a></td>
<td>C11</td>
<td>Defect Report relative to n1570: underspecification for qualified rvalues</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang properly handles dropping qualifiers from cast operations, but
does not yet handle dropping qualifiers from the function return type.
</details>
</td>
</tr>
<tr id="424">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_424">424</a></td>
<td>Dup</td>
<td>Underspecification of tss_t</td>
<td class="na" align="center">Duplicate of <a href="#416">416</a></td>
</tr>
<tr id="425">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_425">425</a></td>
<td>NAD</td>
<td>No specification for the access to variables with temporary lifetime</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="426">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_426">426</a></td>
<td>C11</td>
<td>G.5.1: -yv and -x/v are ambiguous</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="427">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_427">427</a></td>
<td>NAD</td>
<td>Function Parameter and Return Value Assignments</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="428">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_428">428</a></td>
<td>C11</td>
<td>Runtime-constraint issue with sprintf family of routines in Annex K</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="429">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_429">429</a></td>
<td>C11</td>
<td>Should gets_s discard next input line when (s == NULL) ?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="430">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_430">430</a></td>
<td>C11</td>
<td>getenv_s, maxsize should be allowed to be zero</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="431">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_431">431</a></td>
<td>C11</td>
<td>atomic_compare_exchange: What does it mean to say two structs compare equal?</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="432">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_432">432</a></td>
<td>C11</td>
<td>Possible defect report: Is 0.0 required to be a representable value?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="433">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_433">433</a></td>
<td>C11</td>
<td>Issue with constraints for wide character function arguments involving RSIZE_MAX</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="434">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_434">434</a></td>
<td>C11</td>
<td>Possible defect report: Missing constraint w.r.t. Atomic</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="435">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_435">435</a></td>
<td>NAD</td>
<td>Possible defect report: Missing constraint w.r.t. Imaginary</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="436">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_436">436</a></td>
<td>C11</td>
<td>Request for interpretation of C11 6.8.5#6</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="437">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_437">437</a></td>
<td>C11</td>
<td>clock overflow problems</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="438">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_438">438</a></td>
<td>C11</td>
<td>ungetc / ungetwc and file position after discarding push back problems</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="439">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_439">439</a></td>
<td>C11</td>
<td>Issues with the definition of "full expression"</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="440">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_440">440</a></td>
<td>NAD</td>
<td>Floating-point issues in C11 from PDTS 18661-1 UK review, Issue 1</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="441">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_441">441</a></td>
<td>C11</td>
<td>Floating-point issues in C11 from PDTS 18661-1 UK review, Issue 2</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="442">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_442">442</a></td>
<td>NAD</td>
<td>Floating-point issues in C11 from PDTS 18661-1 UK review, Issue 3</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="443">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_443">443</a></td>
<td>NAD</td>
<td>Floating-point issues in C11 from PDTS 18661-1 UK review, Issue 4</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="444">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_444">444</a></td>
<td>C11</td>
<td>Issues with alignment in C11, part 1</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang rejects use of an alignment specifier in a compound literal expression.
</details>
</td>
</tr>
<tr id="445">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_445">445</a></td>
<td>C11</td>
<td>Issues with alignment in C11, part 2</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="446">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_446">446</a></td>
<td>NAD</td>
<td>Use byte instead of character for memcmp, memcpy</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="447">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_447">447</a></td>
<td>C11</td>
<td>Boolean from complex</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="448">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_448">448</a></td>
<td>C11</td>
<td>What are the semantics of a # non-directive?</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="449">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_449">449</a></td>
<td>NAD</td>
<td>What is the value of TSS_DTOR_ITERATIONS for implementations with no maximum?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="450">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_450">450</a></td>
<td>C11</td>
<td>tmpnam_s clears s[0] when maxsize > RSIZE_MAX</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="451">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_451">451</a></td>
<td>NAD</td>
<td>Instability of uninitialized automatic variables</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="452">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_452">452</a></td>
<td>C11</td>
<td>Effective Type in Loop Invariant</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="453">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_453">453</a></td>
<td>C11</td>
<td>Atomic flag type and operations</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="454">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_454">454</a></td>
<td>NAD</td>
<td>ATOMIC_VAR_INIT (issues 3 and 4)</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="455">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_455">455</a></td>
<td>NAD</td>
<td>ATOMIC_VAR_INIT issue 5</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="456">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_456">456</a></td>
<td>Dup</td>
<td>Compile time definition of UINTN_C(value)</td>
<td class="partial" align="center">Duplicate of <a href="#209">209</a></td>
</tr>
<tr id="457">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_457">457</a></td>
<td>C11</td>
<td>The ctime_s function in Annex K defined incorrectly</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="458">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_458">458</a></td>
<td>C11</td>
<td>ATOMIC_XXX_LOCK_FREE macros not constant expressions</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="459">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_459">459</a></td>
<td>C11</td>
<td>atomic_load missing const qualifier</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="460">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_460">460</a></td>
<td>C11</td>
<td>aligned_alloc underspecified</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="461">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_461">461</a></td>
<td>NAD</td>
<td>Problems with references to objects in signal handlers</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="462">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_462">462</a></td>
<td>C11</td>
<td>Clarifying objects accessed in signal handlers</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="463">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_463">463</a></td>
<td>NAD</td>
<td>Left-shifting into the sign bit</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="464">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_464">464</a></td>
<td>C11</td>
<td>Clarifying the Behavior of the #line Directive</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="465">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_465">465</a></td>
<td>C11</td>
<td>Fixing an inconsistency in atomic_is_lock_free</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="466">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_466">466</a></td>
<td>NAD</td>
<td>Scope of a for loop control declaration</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="467">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_467">467</a></td>
<td>C11</td>
<td>Maximum representable finite description vs math</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="468">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_468">468</a></td>
<td>C11</td>
<td>strncpy_s clobbers buffer past null</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="469">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_469">469</a></td>
<td>NAD</td>
<td>Lock ownership vs. thread termination</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="470">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_470">470</a></td>
<td>C11</td>
<td>mtx_trylock should be allowed to fail spuriously</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="471">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_471">471</a></td>
<td>C11</td>
<td>Complex math functions cacosh and ctanh</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="472">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_472">472</a></td>
<td>C11</td>
<td>Introduction to complex arithmetic in 7.3.1p3 wrong due to CMPLX</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="473">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_473">473</a></td>
<td>C11</td>
<td>"A range error occurs if x is too large." is misleading</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="474">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_474">474</a></td>
<td>NAD</td>
<td>NOTE 1 Clarification for atomic_compare_exchange</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="475">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_475">475</a></td>
<td>C11</td>
<td>Misleading Atomic library references to atomic types</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="476">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_476">476</a></td>
<td>C11</td>
<td>volatile semantics for lvalues</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="477">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_477">477</a></td>
<td>C11</td>
<td>nan should take a string argument</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="478">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_478">478</a></td>
<td>NAD</td>
<td>Valid uses of the main function</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="479">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_479">479</a></td>
<td>Dup</td>
<td>Unclear specification of mtx_trylock on non-recursive muteness</td>
<td class="na" align="center">Duplicate of <a href="#269">269</a></td>
</tr>
<tr id="480">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_480">480</a></td>
<td>C11</td>
<td>cnd_wait and cnd_timewait should allow spurious wake-ups</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="481">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_481">481</a></td>
<td>C11</td>
<td>Controlling expression of _Generic primary expression</td>
<td class="full" align="center">Clang 3.8</td>
</tr>
<tr id="482">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_482">482</a></td>
<td>NAD</td>
<td>Macro invocation split over many files</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="483">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_483">483</a></td>
<td>NAD</td>
<td>__LINE__ and __FILE__ in macro replacement list</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="484">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_484">484</a></td>
<td>NAD</td>
<td>invalid characters in strcoll()</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="485">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_485">485</a></td>
<td>C11</td>
<td>Problem with the specification of ATOMIC_VAR_INIT</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="486">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_486">486</a></td>
<td>NAD</td>
<td>Inconsistent specification for arithmetic on atomic objects</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="487">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_487">487</a></td>
<td>C11</td>
<td>timespec vs. tm</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="488">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_488">488</a></td>
<td>C11</td>
<td>c16rtomb() on wide characters encoded as multiple char16_t</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="489">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_489">489</a></td>
<td>NAD</td>
<td>Integer Constant Expression</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang inconsistently diagnoses folding a constan expression into an ICE
as an extension.
</details>
</td>
</tr>
<tr id="490">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_490">490</a></td>
<td>NAD</td>
<td>Unwritten Assumptions About if-then</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="491">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_491">491</a></td>
<td>C11</td>
<td>Concern with Keywords that Match Reserved Identifiers</td>
<td class="partial" align="center">
<details><summary>Partial</summary>
Clang issues a reserved identifier diagnostic when the identifier leads
with an underscore followed by a capital letter or double underscores,
even if the identifier is used for a macro definition.
</details>
</td>
</tr>
<tr id="492">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_492">492</a></td>
<td>NAD</td>
<td>Named Child struct-union with no Member</td>
<td class="full" align="center">Clang 3.6</td>
</tr>
<tr id="493">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_493">493</a></td>
<td>Dup</td>
<td>Mutex Initialization Underspecified</td>
<td class="na" align="center">Duplicate of <a href="#469">469</a></td>
</tr>
<tr id="494">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_494">494</a></td>
<td>C11</td>
<td>Part 1: Alignment specifier expression evaluation</td>
<td class="full" align="center">Yes</td>
</tr>
<tr class="open" id="495">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_495">495</a></td>
<td>C11</td>
<td>Part 2: Atomic specifier expression evaluation</td>
<td align="center">Not resolved</td>
</tr>
<tr id="496">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_496">496</a></td>
<td>NAD</td>
<td>offsetof questions</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="497">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_497">497</a></td>
<td>C11</td>
<td>"white-space character" defined in two places</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="498">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_498">498</a></td>
<td>C11</td>
<td>mblen, mbtowc, and wctomb thread-safety</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="499">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_499">499</a></td>
<td>C17</td>
<td>Anonymous structure in union behavior</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="500">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_500">500</a></td>
<td>C17</td>
<td>Ambiguous specification for FLT_EVAL_METHOD</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="501">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_501">501</a></td>
<td>C17</td>
<td>Can DECIMAL_DIG be larger than necessary?</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="502">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_502">502</a></td>
<td>NAD</td>
<td>Flexible array member in an anonymous struct</td>
<td class="full" align="center">Yes</td>
</tr>
<tr id="503">
<td><a href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2396.htm#dr_503">503</a></td>
<td>NAD</td>
<td>Hexadecimal floating-point and strtod</td>
<td class="na" align="center">N/A</td>
</tr>
</table>
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