[clang] Update C++ DR status page #121642

Endilll · 2025-01-04T12:00:05Z

This patch brings our C++ DR status page up to date with WG21 updates.

CWG1223 "Syntactic disambiguation and trailing-return-types" is resolved by P2915R0 "Proposed resolution for CWG1223". Both the test and the paper were written by @cor3ntin, so I presume no updates are needed.

CWG2819 "Cast from null pointer value in a constant expression" was revisited and marked as not a DR, so I updated the test to ensure that the example is not accepted in C++23 and earlier modes. CC @offsetof.

Tentantive resolutions to the following issues were simply promoted to actual resolutions, so tests don't require any meaningful changes:

CWG2913 "Grammar for deduction-guide has requires-clause in the wrong position" (@zyn0217)
CWG2915 "Explicit object parameters of type void" (@MitalAshok)
CWG2922 "constexpr placement-new is too permissive" (@cor3ntin)

As a drive-by fix, I updated the make_cxx_dr_status script to accommodate for C++23 onwards and C++26 onwards statuses, which are useful for Core issues that are not DRs.

llvmbot · 2025-01-04T12:00:36Z

@llvm/pr-subscribers-clang

Author: Vlad Serebrennikov (Endilll)

Changes

This patch brings our C++ DR status page up to date with WG21 updates.

CWG1223 "Syntactic disambiguation and trailing-return-types" is resolved by P2915R0 "Proposed resolution for CWG1223". Both the test and the paper were written by @cor3ntin, so I presume no updates are needed.

CWG2819 "Cast from null pointer value in a constant expression" was revisited and marked as not a DR, so I updated the test to ensure that the example is not accepted in C++23 and earlier modes. CC @offsetof.

Tentantive resolutions to the following issues were simply promoted to actual resolutions, so tests doesn't require any meaningful changes:

CWG2913 "Grammar for deduction-guide has requires-clause in the wrong position" (@zyn0217)
CWG2915 "Explicit object parameters of type void" (@MitalAshok)
CWG2922 "constexpr placement-new is too permissive" (@cor3ntin)

As a drive-by fix, I updated the make_cxx_dr_status script to accommodate for C++23 onwards and C++26 onwards statuses, which are useful for Core issues that are not DRs.

Patch is 42.89 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/121642.diff

5 Files Affected:

(modified) clang/test/CXX/drs/cwg12xx.cpp (+1-1)
(modified) clang/test/CXX/drs/cwg28xx.cpp (+15-10)
(modified) clang/test/CXX/drs/cwg29xx.cpp (+3-3)
(modified) clang/www/cxx_dr_status.html (+388-146)
(modified) clang/www/make_cxx_dr_status (+6)

diff --git a/clang/test/CXX/drs/cwg12xx.cpp b/clang/test/CXX/drs/cwg12xx.cpp
index cdfbc6d6726581..951c71a9832de1 100644
--- a/clang/test/CXX/drs/cwg12xx.cpp
+++ b/clang/test/CXX/drs/cwg12xx.cpp
@@ -32,7 +32,7 @@ namespace cwg1213 { // cwg1213: 7
 }
 
 #if __cplusplus >= 201103L
-namespace cwg1223 { // cwg1223: 17 drafting 2023-05-12
+namespace cwg1223 { // cwg1223: 17
 struct M;
 template <typename T>
 struct V;
diff --git a/clang/test/CXX/drs/cwg28xx.cpp b/clang/test/CXX/drs/cwg28xx.cpp
index ff625a4a985bcc..40e2b25eedde09 100644
--- a/clang/test/CXX/drs/cwg28xx.cpp
+++ b/clang/test/CXX/drs/cwg28xx.cpp
@@ -1,9 +1,9 @@
 // RUN: %clang_cc1 -std=c++98 -pedantic-errors -verify=expected,cxx98 %s
-// RUN: %clang_cc1 -std=c++11 -pedantic-errors -verify=expected %s
-// RUN: %clang_cc1 -std=c++14 -pedantic-errors -verify=expected %s
-// RUN: %clang_cc1 -std=c++17 -pedantic-errors -verify=expected %s
-// RUN: %clang_cc1 -std=c++20 -pedantic-errors -verify=expected,since-cxx20 %s
-// RUN: %clang_cc1 -std=c++23 -pedantic-errors -verify=expected,since-cxx20,since-cxx23 %s
+// RUN: %clang_cc1 -std=c++11 -pedantic-errors -verify=expected,cxx11-23 %s
+// RUN: %clang_cc1 -std=c++14 -pedantic-errors -verify=expected,cxx11-23 %s
+// RUN: %clang_cc1 -std=c++17 -pedantic-errors -verify=expected,cxx11-23 %s
+// RUN: %clang_cc1 -std=c++20 -pedantic-errors -verify=expected,cxx11-23,since-cxx20 %s
+// RUN: %clang_cc1 -std=c++23 -pedantic-errors -verify=expected,cxx11-23,since-cxx20,since-cxx23 %s
 // RUN: %clang_cc1 -std=c++2c -pedantic-errors -verify=expected,since-cxx20,since-cxx23,since-cxx26 %s
 
 
@@ -47,12 +47,17 @@ void f() {
 #endif
 } // namespace cwg2813
 
-namespace cwg2819 { // cwg2819: 19 tentatively ready 2023-12-01
-
-#if __cpp_constexpr >= 202306L
+namespace cwg2819 { // cwg2819: 19 c++26
+#if __cplusplus >= 201103L
+  // CWG 2024-04-19: This issue is not a DR.
   constexpr void* p = nullptr;
-  constexpr int* q = static_cast<int*>(p);
-  static_assert(q == nullptr);
+  constexpr int* q = static_cast<int*>(p); // #cwg2819-q
+  // cxx11-23-error@-1 {{constexpr variable 'q' must be initialized by a constant expression}}
+  //   cxx11-23-note@-2 {{cast from 'void *' is not allowed in a constant expression}}
+  static_assert(q == nullptr, "");
+  // cxx11-23-error@-1 {{static assertion expression is not an integral constant expression}}
+  //   cxx11-23-note@-2 {{initializer of 'q' is not a constant expression}}
+  //   cxx11-23-note@#cwg2819-q {{declared here}}
 #endif
 }
 
diff --git a/clang/test/CXX/drs/cwg29xx.cpp b/clang/test/CXX/drs/cwg29xx.cpp
index 9629bdd41a2a56..2aa52ad98ada85 100644
--- a/clang/test/CXX/drs/cwg29xx.cpp
+++ b/clang/test/CXX/drs/cwg29xx.cpp
@@ -6,7 +6,7 @@
 // RUN: %clang_cc1 -std=c++23 -pedantic-errors -verify=expected %s
 // RUN: %clang_cc1 -std=c++2c -pedantic-errors -verify=expected %s
 
-namespace cwg2913 { // cwg2913: 20 tentatively ready 2024-08-16
+namespace cwg2913 { // cwg2913: 20
 
 #if __cplusplus >= 202002L
 
@@ -26,7 +26,7 @@ R(T, T) requires true -> R<T>; // expected-error {{expected function body after
 
 } // namespace cwg2913
 
-namespace cwg2915 { // cwg2915: 20 tentatively ready 2024-08-16
+namespace cwg2915 { // cwg2915: 20
 #if __cplusplus >= 202302L
 struct A {
   void f(this void); // expected-error {{explicit object parameter cannot have 'void' type}}
@@ -61,7 +61,7 @@ void *operator new(std::size_t, void *p) { return p; }
 void* operator new[] (std::size_t, void* p) {return p;}
 
 
-namespace cwg2922 { // cwg2922: 20 tentatively ready 2024-07-10
+namespace cwg2922 { // cwg2922: 20
 union U { int a, b; };
 constexpr U nondeterministic(bool i) {
   if(i) {
diff --git a/clang/www/cxx_dr_status.html b/clang/www/cxx_dr_status.html
index 386c57250b7db6..c069e155fd547c 100755
--- a/clang/www/cxx_dr_status.html
+++ b/clang/www/cxx_dr_status.html
@@ -1442,7 +1442,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="233">
     <td><a href="https://cplusplus.github.io/CWG/issues/233.html">233</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>References vs pointers in UDC overload resolution</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -7153,15 +7153,11 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Unnecessary restriction on <TT>auto</TT> array types</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
-  <tr class="open" id="1223">
+  <tr id="1223">
     <td><a href="https://cplusplus.github.io/CWG/issues/1223.html">1223</a></td>
-    <td>drafting</td>
+    <td>DRWP</td>
     <td>Syntactic disambiguation and <I>trailing-return-type</I>s</td>
-    <td align="center">
-      <details>
-        <summary>Not resolved</summary>
-        Clang 17 implements 2023-05-12 resolution
-      </details></td>
+    <td class="full" align="center">Clang 17</td>
   </tr>
   <tr id="1224">
     <td><a href="https://cplusplus.github.io/CWG/issues/1224.html">1224</a></td>
@@ -8945,11 +8941,11 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Alias template specialization vs pack expansion</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
-  <tr class="open" id="1521">
+  <tr id="1521">
     <td><a href="https://cplusplus.github.io/CWG/issues/1521.html">1521</a></td>
-    <td>drafting</td>
+    <td>dup</td>
     <td><TT>T{</TT><I>expr</I><TT>}</TT> with reference types</td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="1522">
     <td><a href="https://cplusplus.github.io/CWG/issues/1522.html">1522</a></td>
@@ -11545,11 +11541,11 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Constant expressions and library undefined behavior</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
-  <tr class="open" id="1953">
+  <tr id="1953">
     <td><a href="https://cplusplus.github.io/CWG/issues/1953.html">1953</a></td>
-    <td>open</td>
+    <td>DR</td>
     <td>Data races and common initial sequence</td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="1954">
     <td><a href="https://cplusplus.github.io/CWG/issues/1954.html">1954</a></td>
@@ -11619,7 +11615,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr class="open" id="1965">
     <td><a href="https://cplusplus.github.io/CWG/issues/1965.html">1965</a></td>
-    <td>drafting</td>
+    <td>open</td>
     <td>Explicit casts to reference types</td>
     <td align="center">Not resolved</td>
   </tr>
@@ -12693,7 +12689,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2144">
     <td><a href="https://cplusplus.github.io/CWG/issues/2144.html">2144</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Function/variable declaration ambiguity</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -13525,11 +13521,11 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Consistency with mismatched aligned/non-over-aligned allocation/deallocation functions</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
-  <tr class="open" id="2283">
+  <tr id="2283">
     <td><a href="https://cplusplus.github.io/CWG/issues/2283.html">2283</a></td>
-    <td>drafting</td>
+    <td>DR</td>
     <td>Missing complete type requirements</td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr class="open" id="2284">
     <td><a href="https://cplusplus.github.io/CWG/issues/2284.html">2284</a></td>
@@ -15183,7 +15179,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr class="open" id="2557">
     <td><a href="https://cplusplus.github.io/CWG/issues/2557.html">2557</a></td>
-    <td>drafting</td>
+    <td>review</td>
     <td>Class member access referring to an unrelated class</td>
     <td align="center">Not resolved</td>
   </tr>
@@ -15207,7 +15203,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2561">
     <td><a href="https://cplusplus.github.io/CWG/issues/2561.html">2561</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Conversion to function pointer for lambda with explicit object parameter</td>
     <td class="none" align="center">No</td>
   </tr>
@@ -15373,7 +15369,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2588">
     <td><a href="https://cplusplus.github.io/CWG/issues/2588.html">2588</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>friend declarations and module linkage</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -16213,7 +16209,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2728">
     <td><a href="https://cplusplus.github.io/CWG/issues/2728.html">2728</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Evaluation of conversions in a <I>delete-expression</I></td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -16734,11 +16730,11 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Alignment requirement of incomplete class type</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
-  <tr class="open" id="2815">
+  <tr id="2815">
     <td><a href="https://cplusplus.github.io/CWG/issues/2815.html">2815</a></td>
-    <td>tentatively ready</td>
+    <td>DR</td>
     <td>Overload resolution for references/pointers to <TT>noexcept</TT> functions</td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr class="open" id="2816">
     <td><a href="https://cplusplus.github.io/CWG/issues/2816.html">2816</a></td>
@@ -16754,15 +16750,15 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2818">
     <td><a href="https://cplusplus.github.io/CWG/issues/2818.html">2818</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Use of predefined reserved identifiers</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2819">
     <td><a href="https://cplusplus.github.io/CWG/issues/2819.html">2819</a></td>
-    <td>accepted</td>
+    <td>WP</td>
     <td>Cast from null pointer value in a constant expression</td>
-    <td class="full" align="center">Clang 19</td>
+    <td class="full" align="center">Clang 19 (C++26 onwards)</td>
   </tr>
   <tr id="2820">
     <td><a href="https://cplusplus.github.io/CWG/issues/2820.html">2820</a></td>
@@ -16862,7 +16858,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2836">
     <td><a href="https://cplusplus.github.io/CWG/issues/2836.html">2836</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Conversion rank of <TT>long double</TT> and extended floating-point types</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -16904,7 +16900,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr class="open" id="2843">
     <td><a href="https://cplusplus.github.io/CWG/issues/2843.html">2843</a></td>
-    <td>review</td>
+    <td>drafting</td>
     <td>Undated reference to Unicode makes C++ a moving target</td>
     <td align="center">Not resolved</td>
   </tr>
@@ -16998,13 +16994,13 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2858">
     <td><a href="https://cplusplus.github.io/CWG/issues/2858.html">2858</a></td>
-    <td>accepted</td>
+    <td>WP</td>
     <td>Declarative <I>nested-name-specifier</I>s and <I>pack-index-specifier</I>s</td>
     <td class="full" align="center">Clang 19</td>
   </tr>
   <tr id="2859">
     <td><a href="https://cplusplus.github.io/CWG/issues/2859.html">2859</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Value-initialization with multiple default constructors</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17016,7 +17012,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2861">
     <td><a href="https://cplusplus.github.io/CWG/issues/2861.html">2861</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td><TT>dynamic_cast</TT> on bad pointer value</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17034,13 +17030,13 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2864">
     <td><a href="https://cplusplus.github.io/CWG/issues/2864.html">2864</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Narrowing floating-point conversions</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2865">
     <td><a href="https://cplusplus.github.io/CWG/issues/2865.html">2865</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Regression on result of conditional operator</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17052,7 +17048,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2867">
     <td><a href="https://cplusplus.github.io/CWG/issues/2867.html">2867</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Order of initialization for structured bindings</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17064,25 +17060,25 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2869">
     <td><a href="https://cplusplus.github.io/CWG/issues/2869.html">2869</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td><TT>this</TT> in local classes</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2870">
     <td><a href="https://cplusplus.github.io/CWG/issues/2870.html">2870</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Combining absent <I>encoding-prefix</I>es</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2871">
     <td><a href="https://cplusplus.github.io/CWG/issues/2871.html">2871</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>User-declared constructor templates inhibiting default constructors</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2872">
     <td><a href="https://cplusplus.github.io/CWG/issues/2872.html">2872</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Linkage and unclear "can be referred to"</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17094,7 +17090,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2874">
     <td><a href="https://cplusplus.github.io/CWG/issues/2874.html">2874</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Qualified declarations of partial specializations</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17106,13 +17102,13 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2876">
     <td><a href="https://cplusplus.github.io/CWG/issues/2876.html">2876</a></td>
-    <td>accepted</td>
+    <td>WP</td>
     <td>Disambiguation of <TT>T x = delete("text")</TT></td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2877">
     <td><a href="https://cplusplus.github.io/CWG/issues/2877.html">2877</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Type-only lookup for <I>using-enum-declarator</I></td>
     <td class="full" align="center">Clang 19</td>
   </tr>
@@ -17122,33 +17118,33 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>C-style casts to reference types</td>
     <td align="center">Not resolved</td>
   </tr>
-  <tr class="open" id="2879">
+  <tr id="2879">
     <td><a href="https://cplusplus.github.io/CWG/issues/2879.html">2879</a></td>
-    <td>review</td>
+    <td>DR</td>
     <td>Undesired outcomes with <TT>const_cast</TT></td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2880">
     <td><a href="https://cplusplus.github.io/CWG/issues/2880.html">2880</a></td>
-    <td>accepted</td>
+    <td>WP</td>
     <td>Accessibility check for destructor of incomplete class type</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2881">
     <td><a href="https://cplusplus.github.io/CWG/issues/2881.html">2881</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Type restrictions for the explicit object parameter of a lambda</td>
     <td class="full" align="center">Clang 19</td>
   </tr>
   <tr id="2882">
     <td><a href="https://cplusplus.github.io/CWG/issues/2882.html">2882</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Unclear treatment of conversion to <TT>void</TT></td>
     <td class="full" align="center">Clang 2.7</td>
   </tr>
   <tr id="2883">
     <td><a href="https://cplusplus.github.io/CWG/issues/2883.html">2883</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Definition of "odr-usable" ignores lambda scopes</td>
     <td class="none" align="center">No</td>
   </tr>
@@ -17170,13 +17166,13 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
   </tr>
   <tr id="2886">
     <td><a href="https://cplusplus.github.io/CWG/issues/2886.html">2886</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Temporaries and trivial potentially-throwing special member functions</td>
     <td class="full" align="center">Clang 9</td>
   </tr>
   <tr id="2887">
     <td><a href="https://cplusplus.github.io/CWG/issues/2887.html">2887</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Missing compatibility entries for xvalues</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17192,21 +17188,21 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Requiring an accessible destructor for destroying operator delete</td>
     <td align="center">Not resolved</td>
   </tr>
-  <tr class="open" id="2890">
+  <tr id="2890">
     <td><a href="https://cplusplus.github.io/CWG/issues/2890.html">2890</a></td>
-    <td>review</td>
+    <td>DR</td>
     <td>Defining members of local classes</td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2891">
     <td><a href="https://cplusplus.github.io/CWG/issues/2891.html">2891</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Normative status of implementation limits</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2892">
     <td><a href="https://cplusplus.github.io/CWG/issues/2892.html">2892</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Unclear usual arithmetic conversions</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17216,15 +17212,15 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Instantiations in discarded <TT>if constexpr</TT> substatements</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
-  <tr class="open" id="2894">
+  <tr id="2894">
     <td><a href="https://cplusplus.github.io/CWG/issues/2894.html">2894</a></td>
-    <td>review</td>
+    <td>DR</td>
     <td>Functional casts create prvalues of reference type</td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr id="2895">
     <td><a href="https://cplusplus.github.io/CWG/issues/2895.html">2895</a></td>
-    <td>DR</td>
+    <td>DRWP</td>
     <td>Initialization should ignore the destination type's cv-qualification</td>
     <td class="unknown" align="center">Unknown</td>
   </tr>
@@ -17246,11 +17242,11 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Clarify implicit conversion sequence from <I>cv</I> <TT>T</TT> to <TT>T</TT></td>
     <td align="center">Not resolved</td>
   </tr>
-  <tr class="open" id="2899">
+  <tr id="2899">
     <td><a href="https://cplusplus.github.io/CWG/issues/2899.html">2899</a></td>
-    <td>tentatively ready</td>
+    <td>DR</td>
     <td>Bad value representations should cause undefined behavior</td>
-    <td align="center">Not resolved</td>
+    <td class="unknown" align="center">Unknown</td>
   </tr>
   <tr class="open" id="2900">
     <td><a href="https://cplusplus.github.io/CWG/issues/2900.html">2900</a></td>
@@ -17258,11 +17254,11 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td>Deduction of non-type template arguments with placeholder types</td>
     <td align="center">Not resolved</td>
   </tr>
-  <tr class="open" id="2901">
+  <tr id="2901">
     <td><a href="https://cplusplus.github.io/CWG/issues/2901.htm...
[truncated]

[clang] Update C++ DR status page

3ede83c

Endilll added the c++ label Jan 4, 2025

Endilll requested review from cor3ntin, shafik and zyn0217 January 4, 2025 12:00

llvmbot added the clang Clang issues not falling into any other category label Jan 4, 2025

cor3ntin approved these changes Jan 4, 2025

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Endilll merged commit da2a9ed into llvm:main Jan 4, 2025
11 checks passed

Endilll deleted the update-cxx-dr-status branch January 4, 2025 14:53

cor3ntin assigned Endilll Jan 9, 2025

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[clang] Update C++ DR status page #121642

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Endilll commented Jan 4, 2025 •

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[clang] Update C++ DR status page #121642

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Endilll commented Jan 4, 2025 •

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