[clang] [clang] Add sections to C++ DR status page (PR #165749)
via cfe-commits
cfe-commits at lists.llvm.org
Thu Oct 30 10:21:16 PDT 2025
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang
Author: Vlad Serebrennikov (Endilll)
<details>
<summary>Changes</summary>
Following [recent discussion](http://lists.isocpp.org/core/2025/10/18637.php) on CWG reflector, `cwg_index.html` now contains section number and stable name of that section for each Core issue. I thought that this would be a useful information to have on our C++ DR status page for that handful of experts who actually open it, so here we are.
This PR consists of 3 parts:
1. Rewrite of a small routine that parses `cwg_index.html` from splits and indicies to a single regular expression with named groups, adding section information.
2. Changes to the rest of the `make_cxx_dr_status` to accommodate for the first part.
3. Regenerated `cxx_dr_status.html`.
Ideally this PR would only add lines to `cxx_dr_status.html`, but previously we've been leaving some newlines in issue titles (which never affected how this page is rendered), which are now properly replaced with whitespaces — hence a couple of deletions in that file.
---
Patch is 1.01 MiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/165749.diff
2 Files Affected:
- (modified) clang/www/cxx_dr_status.html (+6128-9)
- (modified) clang/www/make_cxx_dr_status (+43-29)
``````````diff
diff --git a/clang/www/cxx_dr_status.html b/clang/www/cxx_dr_status.html
index ae9b28ee625cd..f1e3cad57aa99 100755
--- a/clang/www/cxx_dr_status.html
+++ b/clang/www/cxx_dr_status.html
@@ -43,2840 +43,3784 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
<table width="689" border="1" cellspacing="0">
<tr>
<th>Number</th>
+ <th>Section</th>
+ <th>Section name</th>
<th>Status</th>
<th>Issue title</th>
<th>Available in Clang?</th>
</tr>
<tr id="1">
<td><a href="https://cplusplus.github.io/CWG/issues/1.html">1</a></td>
+ <td>9.3.4.7</td>
+ <td>[<a href="https://wg21.link/dcl.fct.default">dcl.fct.default</a>]</td>
<td>TC1</td>
<td>What if two using-declarations refer to the same function but the declarations introduce different default-arguments?</td>
<td class="none" align="center">No</td>
</tr>
<tr class="open" id="2">
<td><a href="https://cplusplus.github.io/CWG/issues/2.html">2</a></td>
+ <td>13.8.4</td>
+ <td>[<a href="https://wg21.link/temp.dep.res">temp.dep.res</a>]</td>
<td>drafting</td>
<td>How can dependent names be used in member declarations that appear outside of the class template definition?</td>
<td align="center">Not resolved</td>
</tr>
<tr id="3">
<td><a href="https://cplusplus.github.io/CWG/issues/3.html">3</a></td>
+ <td>13.9.4</td>
+ <td>[<a href="https://wg21.link/temp.expl.spec">temp.expl.spec</a>]</td>
<td>NAD</td>
<td>The template compilation model rules render some explicit specialization declarations not visible during instantiation</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="4">
<td><a href="https://cplusplus.github.io/CWG/issues/4.html">4</a></td>
+ <td>9.12</td>
+ <td>[<a href="https://wg21.link/dcl.link">dcl.link</a>]</td>
<td>CD1</td>
<td>Does extern "C" affect the linkage of function names with internal linkage?</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="5">
<td><a href="https://cplusplus.github.io/CWG/issues/5.html">5</a></td>
+ <td>9.5</td>
+ <td>[<a href="https://wg21.link/dcl.init">dcl.init</a>]</td>
<td>CD1</td>
<td>CV-qualifiers and type conversions</td>
<td class="full" align="center">Clang 3.1</td>
</tr>
<tr id="6">
<td><a href="https://cplusplus.github.io/CWG/issues/6.html">6</a></td>
+ <td>11.9.6</td>
+ <td>[<a href="https://wg21.link/class.copy.elision">class.copy.elision</a>]</td>
<td>NAD</td>
<td>Should the optimization that allows a class object to alias another object also allow the case of a parameter in an inline function to alias its argument?</td>
<td class="unknown" align="center">Unknown</td>
</tr>
<tr id="7">
<td><a href="https://cplusplus.github.io/CWG/issues/7.html">7</a></td>
+ <td>11.8.3</td>
+ <td>[<a href="https://wg21.link/class.access.base">class.access.base</a>]</td>
<td>NAD</td>
<td>Can a class with a private virtual base class be derived from?</td>
<td class="full" align="center">Clang 3.4</td>
</tr>
<tr id="8">
<td><a href="https://cplusplus.github.io/CWG/issues/8.html">8</a></td>
+ <td>11.8</td>
+ <td>[<a href="https://wg21.link/class.access">class.access</a>]</td>
<td>CD1</td>
<td>Access to template arguments used in a function return type and in the nested name specifier</td>
<td class="full" align="center">Duplicate of <a href="#45">45</a></td>
</tr>
<tr id="9">
<td><a href="https://cplusplus.github.io/CWG/issues/9.html">9</a></td>
+ <td>11.8.3</td>
+ <td>[<a href="https://wg21.link/class.access.base">class.access.base</a>]</td>
<td>CD1</td>
<td>Clarification of access to base class members</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="10">
<td><a href="https://cplusplus.github.io/CWG/issues/10.html">10</a></td>
+ <td>11.8.8</td>
+ <td>[<a href="https://wg21.link/class.access.nest">class.access.nest</a>]</td>
<td>CD1</td>
<td>Can a nested class access its own class name as a qualified name if it is a private member of the enclosing class?</td>
<td class="full" align="center">Duplicate of <a href="#45">45</a></td>
</tr>
<tr id="11">
<td><a href="https://cplusplus.github.io/CWG/issues/11.html">11</a></td>
+ <td>9.10</td>
+ <td>[<a href="https://wg21.link/namespace.udecl">namespace.udecl</a>]</td>
<td>CD1</td>
<td>How do the keywords typename/template interact with using-declarations?</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="12">
<td><a href="https://cplusplus.github.io/CWG/issues/12.html">12</a></td>
+ <td>6.5.4</td>
+ <td>[<a href="https://wg21.link/basic.lookup.argdep">basic.lookup.argdep</a>]</td>
<td>dup</td>
<td>Default arguments on different declarations for the same function and the Koenig lookup</td>
<td class="full-superseded" align="center">Superseded by <a href="#239">239</a></td>
</tr>
<tr id="13">
<td><a href="https://cplusplus.github.io/CWG/issues/13.html">13</a></td>
+ <td>9.12</td>
+ <td>[<a href="https://wg21.link/dcl.link">dcl.link</a>]</td>
<td>NAD</td>
<td>extern "C" for Parameters of Function Templates</td>
<td class="none" align="center">No</td>
</tr>
<tr id="14">
<td><a href="https://cplusplus.github.io/CWG/issues/14.html">14</a></td>
+ <td>9.12</td>
+ <td>[<a href="https://wg21.link/dcl.link">dcl.link</a>]</td>
<td>NAD</td>
<td>extern "C" functions and declarations in different namespaces</td>
<td class="full" align="center">Clang 3.4</td>
</tr>
<tr id="15">
<td><a href="https://cplusplus.github.io/CWG/issues/15.html">15</a></td>
+ <td>9.3.4.7</td>
+ <td>[<a href="https://wg21.link/dcl.fct.default">dcl.fct.default</a>]</td>
<td>dup</td>
<td>Default arguments for parameters of function templates</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="16">
<td><a href="https://cplusplus.github.io/CWG/issues/16.html">16</a></td>
+ <td>11.8.3</td>
+ <td>[<a href="https://wg21.link/class.access.base">class.access.base</a>]</td>
<td>CD1</td>
<td>Access to members of indirect private base classes</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="17">
<td><a href="https://cplusplus.github.io/CWG/issues/17.html">17</a></td>
+ <td>11.8.3</td>
+ <td>[<a href="https://wg21.link/class.access.base">class.access.base</a>]</td>
<td>NAD</td>
<td>Footnote 99 should discuss the naming class when describing members that can be accessed from friends</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="18">
<td><a href="https://cplusplus.github.io/CWG/issues/18.html">18</a></td>
+ <td>9.3.4.6</td>
+ <td>[<a href="https://wg21.link/dcl.fct">dcl.fct</a>]</td>
<td>NAD</td>
<td>f(TYPE) where TYPE is void should be allowed</td>
<td class="full-superseded" align="center">Superseded by <a href="#577">577</a></td>
</tr>
<tr id="19">
<td><a href="https://cplusplus.github.io/CWG/issues/19.html">19</a></td>
+ <td>11.8.5</td>
+ <td>[<a href="https://wg21.link/class.protected">class.protected</a>]</td>
<td>NAD</td>
<td>Clarify protected member access</td>
<td class="full" align="center">Clang 3.1</td>
</tr>
<tr id="20">
<td><a href="https://cplusplus.github.io/CWG/issues/20.html">20</a></td>
+ <td>11.4.5.3</td>
+ <td>[<a href="https://wg21.link/class.copy.ctor">class.copy.ctor</a>]</td>
<td>TC1</td>
<td>Some clarifications needed for 12.8 para 15</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="21">
<td><a href="https://cplusplus.github.io/CWG/issues/21.html">21</a></td>
+ <td>13.2</td>
+ <td>[<a href="https://wg21.link/temp.param">temp.param</a>]</td>
<td>TC1</td>
<td>Can a default argument for a template parameter appear in a friend declaration?</td>
<td class="full" align="center">Clang 3.4</td>
</tr>
<tr id="22">
<td><a href="https://cplusplus.github.io/CWG/issues/22.html">22</a></td>
+ <td>13.8.4</td>
+ <td>[<a href="https://wg21.link/temp.dep.res">temp.dep.res</a>]</td>
<td>TC1</td>
<td>Template parameter with a default argument that refers to itself</td>
<td class="full-superseded" align="center">Superseded by <a href="#481">481</a></td>
</tr>
<tr id="23">
<td><a href="https://cplusplus.github.io/CWG/issues/23.html">23</a></td>
+ <td>13.7.7.3</td>
+ <td>[<a href="https://wg21.link/temp.func.order">temp.func.order</a>]</td>
<td>NAD</td>
<td>Some questions regarding partial ordering of function templates</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="24">
<td><a href="https://cplusplus.github.io/CWG/issues/24.html">24</a></td>
+ <td>13.9.4</td>
+ <td>[<a href="https://wg21.link/temp.expl.spec">temp.expl.spec</a>]</td>
<td>TC1</td>
<td>Errors in examples in 14.7.3</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="25">
<td><a href="https://cplusplus.github.io/CWG/issues/25.html">25</a></td>
+ <td>14.5</td>
+ <td>[<a href="https://wg21.link/except.spec">except.spec</a>]</td>
<td>TC1</td>
<td>Exception specifications and pointers to members</td>
<td class="full" align="center">Clang 4</td>
</tr>
<tr id="26">
<td><a href="https://cplusplus.github.io/CWG/issues/26.html">26</a></td>
+ <td>11.4.5.3</td>
+ <td>[<a href="https://wg21.link/class.copy.ctor">class.copy.ctor</a>]</td>
<td>NAD</td>
<td>Copy constructors and default arguments</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="27">
<td><a href="https://cplusplus.github.io/CWG/issues/27.html">27</a></td>
+ <td>12.5</td>
+ <td>[<a href="https://wg21.link/over.built">over.built</a>]</td>
<td>NAD</td>
<td>Overload ambiguities for builtin ?: prototypes</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="28">
<td><a href="https://cplusplus.github.io/CWG/issues/28.html">28</a></td>
+ <td>6.10.3.3</td>
+ <td>[<a href="https://wg21.link/basic.start.dynamic">basic.start.dynamic</a>]</td>
<td>CD1</td>
<td>'exit', 'signal' and static object destruction</td>
<td class="na" align="center">N/A (Library DR)</td>
</tr>
<tr id="29">
<td><a href="https://cplusplus.github.io/CWG/issues/29.html">29</a></td>
+ <td>9.12</td>
+ <td>[<a href="https://wg21.link/dcl.link">dcl.link</a>]</td>
<td>CD1</td>
<td>Linkage of locally declared functions</td>
<td class="full" align="center">Clang 3.4</td>
</tr>
<tr id="30">
<td><a href="https://cplusplus.github.io/CWG/issues/30.html">30</a></td>
+ <td>13.3</td>
+ <td>[<a href="https://wg21.link/temp.names">temp.names</a>]</td>
<td>TC1</td>
<td>Valid uses of "<TT>::template</TT>"</td>
<td class="full-superseded" align="center">Superseded by <a href="#468">468</a> (C++11 onwards)</td>
</tr>
<tr id="31">
<td><a href="https://cplusplus.github.io/CWG/issues/31.html">31</a></td>
+ <td>7.6.2.8</td>
+ <td>[<a href="https://wg21.link/expr.new">expr.new</a>]</td>
<td>NAD</td>
<td>Looking up new/delete</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="32">
<td><a href="https://cplusplus.github.io/CWG/issues/32.html">32</a></td>
+ <td>13</td>
+ <td>[<a href="https://wg21.link/temp">temp</a>]</td>
<td>TC1</td>
<td>Clarification of explicit instantiation of non-exported templates</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="33">
<td><a href="https://cplusplus.github.io/CWG/issues/33.html">33</a></td>
+ <td>6.5.4</td>
+ <td>[<a href="https://wg21.link/basic.lookup.argdep">basic.lookup.argdep</a>]</td>
<td>TC1</td>
<td>Argument dependent lookup and overloaded functions</td>
<td class="full" align="center">Clang 9</td>
</tr>
<tr id="34">
<td><a href="https://cplusplus.github.io/CWG/issues/34.html">34</a></td>
+ <td>13.9.2</td>
+ <td>[<a href="https://wg21.link/temp.inst">temp.inst</a>]</td>
<td>NAD</td>
<td>Argument dependent lookup and points of instantiation</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="35">
<td><a href="https://cplusplus.github.io/CWG/issues/35.html">35</a></td>
+ <td>9.5</td>
+ <td>[<a href="https://wg21.link/dcl.init">dcl.init</a>]</td>
<td>TC1</td>
<td>Definition of default-initialization</td>
<td class="full" align="center">Duplicate of <a href="#178">178</a></td>
</tr>
<tr id="36">
<td><a href="https://cplusplus.github.io/CWG/issues/36.html">36</a></td>
+ <td>9.10</td>
+ <td>[<a href="https://wg21.link/namespace.udecl">namespace.udecl</a>]</td>
<td>CD6</td>
<td><I>using-declaration</I>s in multiple-declaration contexts</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="37">
<td><a href="https://cplusplus.github.io/CWG/issues/37.html">37</a></td>
+ <td>_N5001_.14.6.3</td>
+ <td>[<a href="https://wg21.link/except.uncaught">except.uncaught</a>]</td>
<td>NAD</td>
<td>When is uncaught_exception() true?</td>
<td class="unknown-superseded" align="center">Superseded by <a href="#475">475</a></td>
</tr>
<tr id="38">
<td><a href="https://cplusplus.github.io/CWG/issues/38.html">38</a></td>
+ <td>13.3</td>
+ <td>[<a href="https://wg21.link/temp.names">temp.names</a>]</td>
<td>TC1</td>
<td>Explicit template arguments and operator functions</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="39">
<td><a href="https://cplusplus.github.io/CWG/issues/39.html">39</a></td>
+ <td>6.5.2</td>
+ <td>[<a href="https://wg21.link/class.member.lookup">class.member.lookup</a>]</td>
<td>CD1</td>
<td>Conflicting ambiguity rules</td>
<td class="none" align="center">No</td>
</tr>
<tr id="40">
<td><a href="https://cplusplus.github.io/CWG/issues/40.html">40</a></td>
+ <td>9.3.4</td>
+ <td>[<a href="https://wg21.link/dcl.meaning">dcl.meaning</a>]</td>
<td>TC1</td>
<td>Syntax of <I>declarator-id</I></td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="41">
<td><a href="https://cplusplus.github.io/CWG/issues/41.html">41</a></td>
+ <td>6.5.3</td>
+ <td>[<a href="https://wg21.link/basic.lookup.unqual">basic.lookup.unqual</a>]</td>
<td>TC1</td>
<td>Clarification of lookup of names after declarator-id</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="42">
<td><a href="https://cplusplus.github.io/CWG/issues/42.html">42</a></td>
+ <td>6.4.7</td>
+ <td>[<a href="https://wg21.link/basic.scope.class">basic.scope.class</a>]</td>
<td>NAD</td>
<td>Redefining names from base classes</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="43">
<td><a href="https://cplusplus.github.io/CWG/issues/43.html">43</a></td>
+ <td>6.9</td>
+ <td>[<a href="https://wg21.link/basic.types">basic.types</a>]</td>
<td>TC1</td>
<td>Copying base classes (PODs) using memcpy</td>
<td class="na" align="center">N/A</td>
</tr>
<tr id="44">
<td><a href="https://cplusplus.github.io/CWG/issues/44.html">44</a></td>
+ <td>13.9.4</td>
+ <td>[<a href="https://wg21.link/temp.expl.spec">temp.expl.spec</a>]</td>
<td>CD1</td>
<td>Member specializations</td>
<td class="partial-superseded" align="center">Superseded by <a href="#727">727</a></td>
</tr>
<tr id="45">
<td><a href="https://cplusplus.github.io/CWG/issues/45.html">45</a></td>
+ <td>11.8.8</td>
+ <td>[<a href="https://wg21.link/class.access.nest">class.access.nest</a>]</td>
<td>CD1</td>
<td>Access to nested classes</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="46">
<td><a href="https://cplusplus.github.io/CWG/issues/46.html">46</a></td>
+ <td>13.9.3</td>
+ <td>[<a href="https://wg21.link/temp.explicit">temp.explicit</a>]</td>
<td>NAD</td>
<td>Explicit instantiation of member templates</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="47">
<td><a href="https://cplusplus.github.io/CWG/issues/47.html">47</a></td>
+ <td>13.7.5</td>
+ <td>[<a href="https://wg21.link/temp.friend">temp.friend</a>]</td>
<td>NAD</td>
<td>Template friend issues</td>
<td class="full-superseded" align="center">Superseded by <a href="#329">329</a></td>
</tr>
<tr id="48">
<td><a href="https://cplusplus.github.io/CWG/issues/48.html">48</a></td>
+ <td>11.4.9.3</td>
+ <td>[<a href="https://wg21.link/class.static.data">class.static.data</a>]</td>
<td>TC1</td>
<td>Definitions of unused static members</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="49">
<td><a href="https://cplusplus.github.io/CWG/issues/49.html">49</a></td>
+ <td>13.2</td>
+ <td>[<a href="https://wg21.link/temp.param">temp.param</a>]</td>
<td>TC1</td>
<td>Restriction on non-type, non-value template arguments</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="50">
<td><a href="https://cplusplus.github.io/CWG/issues/50.html">50</a></td>
+ <td>6.3</td>
+ <td>[<a href="https://wg21.link/basic.def.odr">basic.def.odr</a>]</td>
<td>NAD</td>
<td>Converting pointer to incomplete type to same type</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="51">
<td><a href="https://cplusplus.github.io/CWG/issues/51.html">51</a></td>
+ <td>12.2.4</td>
+ <td>[<a href="https://wg21.link/over.match.best">over.match.best</a>]</td>
<td>TC1</td>
<td>Overloading and user-defined conversions</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="52">
<td><a href="https://cplusplus.github.io/CWG/issues/52.html">52</a></td>
+ <td>7.6.1.5</td>
+ <td>[<a href="https://wg21.link/expr.ref">expr.ref</a>]</td>
<td>TC1</td>
<td>Non-static members, member selection and access checking</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="53">
<td><a href="https://cplusplus.github.io/CWG/issues/53.html">53</a></td>
+ <td>7.6.1.9</td>
+ <td>[<a href="https://wg21.link/expr.static.cast">expr.static.cast</a>]</td>
<td>TC1</td>
<td>Lvalue-to-rvalue conversion before certain static_casts</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="54">
<td><a href="https://cplusplus.github.io/CWG/issues/54.html">54</a></td>
+ <td>7.6.1.9</td>
+ <td>[<a href="https://wg21.link/expr.static.cast">expr.static.cast</a>]</td>
<td>CD1</td>
<td>Static_cast from private base to derived class</td>
<td class="full" align="center">Clang 2.8</td>
</tr>
<tr id="55">
<td><a href="https://cplusplus.github.io/CWG/issues/55.html">55</a></td>
+ <td>7.6.6</td>
+ <td>[<a href="https://wg21.link/expr.add">expr.add</a>]</td>
<td>NAD</td>
<td>Adding/subtracting pointer and enumeration value</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr id="56">
<td><a href="https://cplusplus.github.io/CWG/issues/56.html">56</a></td>
+ <td>9.2.4</td>
+ <td>[<a href="https://wg21.link/dcl.typedef">dcl.typedef</a>]</td>
<td>TC1</td>
<td>Redeclaring typedefs within classes</td>
<td class="full" align="center">Clang 2.7</td>
</tr>
<tr class="open" id="57">
<td><a href="https://cplusplus.github.io/CWG/issues/57.html">57</a></td>
+ <td>11.5</td>
+ <td>[<a href="https://wg21.link/class.union">class.union</a>]</td>
<td>open</td>
<td>Empty unions</td>
<td align="center">Not resolved</td>
</tr>
<tr id="58">
<td><a href="https://cplusplus.github.io/CWG/issues/58.html">58</a></td>
+ <td>11.4.10</td>
+ <td>[<a href="https://wg21.link/class.bit">class.bit</a>]</td>
<td>CD1</td>
<td>Signedness of bit fields of enum type</td>
<td class="full" align="center">Clang 3.1</td>
</tr>
<tr id="59">
<td><a href="https://cplusplus.github.io/CWG/issues/59.html">59</...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/165749
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