This patch adds a mention of -std=c2x and associated options, and the
single new C2X feature supported (given the early stage of C2X
development when we left development stage 1), to the GCC 9 release
notes.
Committed.
Index: gcc-9/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-9/changes.html,v
retrieving revision 1.61
diff -u -r1.61 changes.html
--- gcc-9/changes.html 2 May 2019 12:19:27 -0000 1.61
+++ gcc-9/changes.html 2 May 2019 20:18:44 -0000
@@ -402,6 +402,17 @@
<h3 id="c">C</h3>
<ul>
+ <li>There is now experimental support for <code>-std=c2x</code>, to
+ select support for the upcoming C2X revision of the ISO C
+ standard. This standard is in the early stages of development and
+ the only feature supported in GCC 9 is <code>_Static_assert</code>
+ with a single argument (support for <code>_Static_assert</code> with two
+ arguments was added in C11 and GCC 4.6). There are also new
+ options <code>-std=gnu2x</code>, for C2X with GNU extensions,
+ and <code>-Wc11-c2x-compat</code>, to warn for uses of features
+ added in C2X (such warnings are also enabled by use
+ of <code>-Wpedantic</code> if not using <code>-std=c2x</code>
+ or <code>-std=gnu2x</code>).</li>
<li>New warnings:
<ul>
<li><a
href="https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wabsolute-value";><code>-Wabsolute-value</code></a>
--
Joseph S. Myers
jos...@codesourcery.com
