On 11/02/16 15:20 +0100, Marek Polacek wrote:
Does this look ok?
Looks OK, although how about stressing that it was only allowed as an
extension previously, e.g. ...
Index: porting_to.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-6/porting_to.html,v
retrieving revision 1.9
diff -u -r1.9 porting_to.html
--- porting_to.html 10 Feb 2016 17:21:54 -0000 1.9
+++ porting_to.html 11 Feb 2016 14:18:59 -0000
@@ -269,6 +269,25 @@
to port the code to use C++11's <code>std::unique_ptr</code> instead.
</p>
+<h3>'constexpr' needed for in-class initialization of static data member</h3>
+
In C++98 in-class initialization of static data members is only
allowed for integral types, but as an extension G++ also allowed it
for floating point types:
+
+<pre><code>
+struct X {
+ const static double i = 10;
+};
+</pre></code>
The C++11 standard supports that in-class initialization using
<code>constexpr</code> instead, so the GNU extension is no longer
supported for C++11 or later. Programs relying on the extension will
be rejected with an error. The fix is to
use <code>constexpr</code> instead of <code>const</code>.
