[wwwdocs] Document libstdc++ changes in gcc-12
Commit Message
Pushed to wwwdocs.
---
htdocs/gcc-12/changes.html | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
@@ -165,7 +165,26 @@ a work-in-progress.</p>
</li>
</ul>
-<!-- <h4 id="libstdcxx">Runtime Library (libstdc++)</h4> -->
+<h4 id="libstdcxx">Runtime Library (libstdc++)</h4>
+
+<ul>
+<li>Improved experimental C++20 support, including:
+ <ul>
+ <li><code>std::vector</code>, <code>std::optional</code>,
+ and <code>std::variant</code> can be used in <code>constexpr</code>
+ functions.</li>
+ <li>Layout-compatibility and pointer-interconvertibility traits.</li>
+ </ul>
+</li>
+<li>Improved experimental C++23 support, including:
+ <ul>
+ <li>Monadic operations for <code>std::optional</code>.</li>
+ <li><code>std::move_only_function</code></li>
+ <li><code>std::invoke_r</code></li>
+ <li><code>std::basic_string::resize_and_overwrite</code></li>
+ </ul>
+</li>
+</ul>
<!-- <h3 id="d">D</h3> -->