On Thu, Jan 11, 2024 at 12:06 AM H.J. Lu <hjl.to...@gmail.com> wrote:
>
> On Tue, Jan 9, 2024 at 6:02 PM liuhongt <hongtao....@intel.com> wrote:
> >
> > After r14-2692-g1c6231c05bdcca, the option is defined as EnumSet and
> > -fcf-protection=branch won't unset any others bits since they're in
> > different groups. So to override -fcf-protection, an explicit
> > -fcf-protection=none needs to be added and then with
> > -fcf-protection=XXX
> >
> > Bootstrapped and regtested on x86_64-pc-linux-gnu{-m32,}.
> > Ok for trunk?
> >
> > gcc/ChangeLog:
>
> We should mention:
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113039
Changed, and committed.
>
> > * doc/invoke.texi (fcf-protection=): Update documents.
> > ---
> > gcc/doc/invoke.texi | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
> > index 68d1f364ac0..d1e6fafb98c 100644
> > --- a/gcc/doc/invoke.texi
> > +++ b/gcc/doc/invoke.texi
> > @@ -17734,6 +17734,9 @@ function. The value @code{full} is an alias for
> > specifying both
> > @code{branch} and @code{return}. The value @code{none} turns off
> > instrumentation.
> >
> > +To override @option{-fcf-protection}, @option{-fcf-protection=none}
> > +needs to be explicitly added and then with @option{-fcf-protection=xxx}.
> > +
> > The value @code{check} is used for the final link with link-time
> > optimization (LTO). An error is issued if LTO object files are
> > compiled with different @option{-fcf-protection} values. The
> > --
> > 2.31.1
> >
>
>
> --
> H.J.
--
BR,
Hongtao
