: Mention -Waddress-of-packed-member change in GCC 9

Message ID 20190114143503.GA22371@lucon.org
State New
Headers show
Series
  • : Mention -Waddress-of-packed-member change in GCC 9
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Commit Message

H.J. Lu Jan. 14, 2019, 2:35 p.m.
OK to install?

H.J.
---

Comments

Richard Biener Jan. 15, 2019, 10:55 a.m. | #1
On Mon, Jan 14, 2019 at 3:35 PM H.J. Lu <hongjiu.lu@intel.com> wrote
>

> OK to install?

>

> H.J.

> ---

> Index: changes.html

> ===================================================================

> RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-9/changes.html,v

> retrieving revision 1.34

> diff -u -p -r1.34 changes.html

> --- changes.html        13 Jan 2019 17:40:11 -0000      1.34

> +++ changes.html        14 Jan 2019 14:33:58 -0000

> @@ -79,6 +79,14 @@ a work-in-progress.</p>

>      <li><code>__builtin_convertvector</code> built-in for vector conversions

>        has been added. </li>

>    </ul></li>

> +

> +  <li>New warnings:

> +  <ul>

> +      <li><code>-Waddress-of-packed-member</code>, enabled by default,

> +      warns unaligned pointer value from adress of packed member of

> +      struct or union.


"warns about an unaligned pointer value from the address of a packed member
of a struct or union."

OK with that change.

Richard.

> +      </li>

> +  </ul></li>

>  </ul>

>

>  <h3 id="cxx">C++</h3>

Patch

Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-9/changes.html,v
retrieving revision 1.34
diff -u -p -r1.34 changes.html
--- changes.html	13 Jan 2019 17:40:11 -0000	1.34
+++ changes.html	14 Jan 2019 14:33:58 -0000
@@ -79,6 +79,14 @@  a work-in-progress.</p>
     <li><code>__builtin_convertvector</code> built-in for vector conversions
       has been added. </li>
   </ul></li>
+
+  <li>New warnings:
+  <ul>
+      <li><code>-Waddress-of-packed-member</code>, enabled by default,
+      warns unaligned pointer value from adress of packed member of
+      struct or union.
+      </li>
+  </ul></li>
 </ul>
 
 <h3 id="cxx">C++</h3>