ZFS patches for FreeBSD.
Ruslan Ermilov
ru at freebsd.org
Fri Nov 17 07:57:23 UTC 2006
On Thu, Nov 16, 2006 at 09:56:39PM -0500, Alexander Kabaev wrote:
> On Thu, 16 Nov 2006 15:06:56 -0500
> Jung-uk Kim <jkim at FreeBSD.org> wrote:
>
> > On Thursday 16 November 2006 02:15 pm, Andriy Gapon wrote:
> > > Hmm, I saw errors like this with some other 3rd party kernel module
> > > when its sources had constructs like:
> > >
> > > struct some_struct s = {0};
> > >
> > > Changing the above initialization to explicit bzero() call helped
> > > in that case, but I think that there should be some compiler flags
> > > or something to handle this.
> >
> > AFAIK, there was no way to handle this GCC bug with compiler flags.
> > '-ffreestanding' should prevent this to happen but it does not. As
> > Max Laier pointed out, it was discussed long time ago. Bruce Evans
> > had good analysis on this issue, too.
> >
> This is not a GCC bug. -ffreestanding is _documented_ as requiring
> memset and friends as resolvable extern symbols. We were just lucky to
> get away without it before.
>
Yes. But to make it clear: it's there in libkern.h, just not external.
Cheers,
--
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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