On Mon, Jul 27, 2015 at 12:34:06AM +0200, Gerald Pfeifer wrote:
> Hi Marek,
>
> On Tue, 21 Jul 2015, Marek Polacek wrote:
> > + <li>A new command-line option <code>-Wshift-overflow</code> has been
> > + added for the C and C++ compilers, which warns about left shift
> > + overflows. <code>-Wshift-overflow=2</code> also warns about
> > + left-shifting 1 into the sign bit.</li>
>
> from what I can tell, this is enabled by default for modern
> dialects of C and C++ (so many people will see new warnings
> when upgrading)
>
> Shouldn't this be mentioned here?
Ok, fixed. Thanks.
Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-6/changes.html,v
retrieving revision 1.15
diff -u -r1.15 changes.html
--- changes.html 21 Jul 2015 09:30:14 -0000 1.15
+++ changes.html 27 Jul 2015 11:14:11 -0000
@@ -46,7 +46,8 @@
<li>A new command-line option <code>-Wshift-overflow</code> has been
added for the C and C++ compilers, which warns about left shift
overflows. <code>-Wshift-overflow=2</code> also warns about
- left-shifting 1 into the sign bit.</li>
+ left-shifting 1 into the sign bit. This warning is enabled by
+ default.</li>
</ul>
<h3 id="c">C</h3>
Marek
