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Re: [doc patch] Fix PR 20533 - Missing 'used' variable attribute desc ription
- From: Ryan Mansfield <RMansfield at qnx dot com>
- To: 'Roger Sayle' <roger at eyesopen dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Fri, 29 Sep 2006 09:48:39 -0400
- Subject: Re: [doc patch] Fix PR 20533 - Missing 'used' variable attribute desc ription
> On Mon, 6 Mar 2006, Ryan Mansfield wrote:
> > 2006-03-06 Ryan Mansfield <rmansfield@qnx.com>
> >
> > * doc/extend.texi: Add used variable attribute description.
>
> This is OK for mainline. Please remember to reference PR c/20533 in
> the ChangeLog entry. Thanks.
>
> Let me know if you need someone to commit this for you.
>
Roger,
Sorry, I just noticed your reply while cleaning out my inbox. The PR is
still open so if you could commit it for me, I would appreciate it. Here is
the change to the changelog and a more recent diff.
2006-09-29 Ryan Mansfield <rmansfield@qnx.com>
PR c/20533
* doc/extend.texi: Add used variable attribute description.
Index: extend.texi
===================================================================
--- extend.texi (revision 117302)
+++ extend.texi (working copy)
@@ -3175,6 +3175,10 @@
to be possibly unused. GCC will not produce a warning for this
variable.
+@item used
+This attribute, attached to a variable, means that the variable must be
+emitted even if it appears that the variable is not referenced.
+
@item vector_size (@var{bytes})
This attribute specifies the vector size for the variable, measured in
bytes. For example, the declaration:
Regards,
Ryan Mansfield