@@ -206,6 +206,31 @@ a work-in-progress.</p>
<!-- <h3 id="c-family">C family</h3> -->
+<h3 id="c">C</h3>
+
+<ul>
+ <li>Some more C23 features have been implemented:
+ <ul>
+ <li>Bit-precise integer types (<code>_BitInt (<i>N</i>)</code>
+ and <code>unsigned _BitInt (<i>N</i>)</code>): integer types with
+ a specified number of bits. These are only supported on
+ IA-32/x86-64 at present.</li>
+ <li>Structure, union and enumeration types may be defined more
+ than once in the same scope with the same contents and the same
+ tag; if such types are defined with the same contents and the
+ same tag in different scopes, the types are compatible.</li>
+ <li>The <code><stdckdint.h></code> header for checked
+ integer arithmetic.</li>
+ </ul>
+ </li>
+ <li>In addition to those C23 features, there are new command-line
+ options <code>-std=c23</code>, <code>-std=gnu23</code>
+ and <code>-Wc11-c23-compat</code>. These are equivalent to the
+ previous options <code>-std=c2x</code>, <code>-std=gnu2x</code>
+ and <code>-Wc11-c2x-compat</code>, which are deprecated but remain
+ supported.</li>
+</ul>
+
<h3 id="cxx">C++</h3>
<ul>