Re: update Wextra doc

["Manuel López-Ibáñez" <lopezibanez at gmail dot com>]

On 19/02/07, Gerald Pfeifer <gerald@pfeifer.com> wrote:
> On Sat, 10 Feb 2007, Manuel López-Ibáñez wrote:
> > The manual page claims that Wextra warns for any of several
> > floating-point events that often indicate errors, such as overflow,
> > underflow, loss of precision, etc. I wasn't able to find any instance
> > of this. I am fairly sure that Wextra doesn't do such thing.
> >
> > This patch is in accordance with the discussion about fixing PR7651.
> > See http://gcc.gnu.org/ml/gcc/2007-01/msg00391.html
>
> This is one of those patches that can easily fall through the cracks
> because hardly anyone is responsible on the reviewing side and it is
> usually harder to prove non-existence of something. :-)

In this case, it is not so hard. You only have to grep for
extra_warnings or OPT_Wextra. No warning enabled by -Wextra fits that
paragraph. Q.E.D.

> > OK for mainline?
> > Should this change also go into 4.2 ?
> >
> > 2007-02-10  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
> >
> >  * doc/invoke.texi (Wextra): Delete outdated paragraph.
>
> So, I'll chime in and approve this if there are no objections by the
> end of this week.  In that case, yes, please also apply this to the
> 4.2 branch.


Thanks,

Manuel.