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commit 25f41bc83c43dab1f385e4f77a8b856182a46db9
Author: Patrick Palka <[email protected]>
Date: Wed Apr 29 19:13:27 2026 -0400
gcc-16: document some more libstdc++ changes
diff --git a/htdocs/gcc-16/changes.html b/htdocs/gcc-16/changes.html
index 07d45648..5129bd5e 100644
--- a/htdocs/gcc-16/changes.html
+++ b/htdocs/gcc-16/changes.html
@@ -352,6 +352,12 @@ struct Affected : E
C++17 mode.
</li>
+ <li>
+ <code>std::regex</code> execution has been rewritten to use a heap-based
+ stack instead of the system stack, avoiding stack overflows when matching
+ larger strings.
+ </li>
+
<li>Improved support for C++20, including:
<ul>
<li>
@@ -401,6 +407,9 @@ struct Affected : E
<li>
<code>ranges::starts_with</code> and <code>ranges::ends_with</code>.
</li>
+ <li>
+ <code>ranges::shift_left</code> and <code>ranges::shift_right</code>.
+ </li>
<li><code>std::allocator_traits::allocate_at_least</code>.</li>
</ul>
</li>
commit e3001c06f575ba6d542705c33872e95e99f2736e
Author: Patrick Palka <[email protected]>
Date: Wed Apr 29 19:12:39 2026 -0400
gcc-16: document some more C++ changes
diff --git a/htdocs/gcc-16/changes.html b/htdocs/gcc-16/changes.html
index a4329e24..07d45648 100644
--- a/htdocs/gcc-16/changes.html
+++ b/htdocs/gcc-16/changes.html
@@ -286,6 +286,32 @@ for general information.</p>
<!-- commit b76d9f7c1f2e14a576e2e548b0d454a1f16c7fde
c++: UX improvements for close matches in print_candidates -->
</li>
+ <li>Experimental C++20 modules support
+ <ul>
+ <li>
+ New command line option <code>--compile-std-module</code> that
+ conveniently builds the <code><bits/stdc++.h></code> header unit
+ and the <code>std</code> and <code>std.compat</code> modules before
+ compiling any source files explicitly specified on the command line.
+ </li>
+ <li>
+ Whenever the <code><bits/stdc++.h></code> header unit has been
+ built, GCC now transparently translates an <code>#include</code> of
+ any importable standard library header into an <code>import</code> of
+ <code><bits/stdc++.h></code>.
+ </li>
+ <li>
+ Many reported bugs have been fixed, thanks to Nathaniel Shead.
+ </li>
+ </ul>
+ </li>
+ <li>
+ Constraint failure diagnostics for standard library type traits such as
+ <code>is_constructible_v</code> and <code>is_invocable_v</code> are
+ improved to further elaborate why the trait is <code>false</code> instead
+ of just reporting <code>expression is_foo_v<...> evaluated to
false</code>,
+ thanks to Nathaniel Shead.
+ </li>
</ul>
<h4 id="libstdcxx">Runtime Library (libstdc++)</h4>
-----------------------------------------------------------------------
Summary of changes:
htdocs/gcc-16/changes.html | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
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