[committed] wwwdocs: gcc-13: Add release notes for more C23 features

[Joseph Myers]

diff --git a/htdocs/gcc-13/changes.html b/htdocs/gcc-13/changes.html
index 41d07e57..d033628b 100644
--- a/htdocs/gcc-13/changes.html
+++ b/htdocs/gcc-13/changes.html
@@ -112,9 +112,41 @@ a work-in-progress.</p>
     <ul>
       <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3042.htm";>N3042</a>,
          Introduce the nullptr constant</li>
+      <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2963.htm";>N2963</a>,
+      Enhanced Enumerations (fixed underlying types)</li>
+      <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2975.pdf";>N2975</a>,
+       Relax requirements for variadic parameter lists</li>
+      <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3007.htm";>N3007</a>,
+      Type inference for object definitions (<code>auto</code>)</li>
+      <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3018.htm";>N3018</a>,
+       The <code>constexpr</code> specifier for object definitions</li>
+      <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3038.htm";>N3038</a>,
+       Introduce storage-class specifiers for compound literals</li>
+      <li><code>typeof</code> (previously supported as an extension)
+       and <code>typeof_unqual</code></li>
+      <li>New
+       keywords <code>alignas</code>, <code>alignof</code>, <code>bool</code>,
+       <code>false</code>, <code>static_assert</code>, 
<code>thread_local</code>,
+       <code>true</code></li>
+      <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2764.pdf";>N2764</a>,
+      The <code>noreturn</code> attribute</li>
       <li>Support for empty initializer braces</li>
+      <li><code>__STDC_VERSION_*_H__</code> header version macros</li>
+      <li>Removal of <code>ATOMIC_VAR_INIT</code></li>
+      <li><code>unreachable</code> macro
+      in <code>&lt;stddef.h&gt;</code></li>
+      <li>Removal of trigraphs</li>
+      <li>Removal of unprototyped functions</li>
+      <li><code>printf</code> and <code>scanf</code> format checking
+      with <code>-Wformat</code> for <code>%wN</code>
+      and <code>%wfN</code> format length modifiers</li>
+      <li><a 
href="https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2836.pdf";>N2836</a>,
+       Identifier Syntax using Unicode Standard Annex 31</li>
     </ul>
   </li>
+  <li>In addition to those C23 features, existing features adopted in
+  C23 have been adjusted to follow C23 requirements and are not diagnosed
+  with <code>-std=c2x -Wpedantic</code>.</li>
   <li>New warnings:
     <ul>
       <li><code>-Wenum-int-mismatch</code> warns about mismatches between an

-- 
Joseph S. Myers
jos...@codesourcery.com