Re: [PULL 00/19] 9p queue 2022-03-04

[Greg Kurz <groug@kaod.org>]

On Fri, 4 Mar 2022 16:31:07 -0500
Will Cohen <wwcohen@gmail.com> wrote:

> On Fri, Mar 4, 2022 at 3:16 PM Christian Schoenebeck <qemu_oss@crudebyte.com>
> wrote:
> 
> > On Freitag, 4. März 2022 19:42:18 CET Peter Maydell wrote:
> > > On Fri, 4 Mar 2022 at 12:32, Christian Schoenebeck
> > >
> > > <qemu_oss@crudebyte.com> wrote:
> > > > The following changes since commit
> > 5959ef7d431ffd02db112209cf55e47b677256fd:
> > > >   Merge remote-tracking branch
> > > >   'remotes/alistair/tags/pull-riscv-to-apply-20220303' into staging
> > > >   (2022-03-03 19:59:38 +0000)>
> > > > are available in the Git repository at:
> > > >   https://github.com/cschoenebeck/qemu.git tags/pull-9p-20220304
> > > >
> > > > for you to fetch changes up to
> > 39edfe337c418995b2932a9a14a612fb0c329dc5:
> > > >   fsdev/p9array.h: convert Doxygen -> kerneldoc format (2022-03-04
> > > >   13:07:39 +0100)>
> > > > ----------------------------------------------------------------
> > > > 9pfs: introduce macOS host support and cleanup
> > > >
> > > > * Add support for Darwin (a.k.a. macOS) hosts.
> > > >
> > > > * Code cleanup (move qemu_dirent_dup() from osdep -> 9p-util).
> > > >
> > > > * API doc cleanup (convert Doxygen -> kerneldoc format).
> > >
> > > This fails to build on my OSX box:
> > >
> > > In file included from ../../hw/9pfs/9p-util-darwin.c:12:
> > > ../../hw/9pfs/9p-util.h:57:1: error: unused label 'again'
> > > [-Werror,-Wunused-label]
> > > again:
> > > ^~~~~~
> > >
> > > because the use of the label is inside a #ifndef CONFIG_DARWIN
> > > but the definition is not.
> > >
> > > thanks
> > > -- PMM
> >
> > So basically it needs this change:
> >
> > diff --git a/hw/9pfs/9p-util.h b/hw/9pfs/9p-util.h
> > index cfa7af43c5..97e681e167 100644
> > --- a/hw/9pfs/9p-util.h
> > +++ b/hw/9pfs/9p-util.h
> > @@ -54,7 +54,9 @@ static inline int openat_file(int dirfd, const char
> > *name,
> > int flags,
> >  {
> >      int fd, serrno, ret;
> >
> > +#ifndef CONFIG_DARWIN
> >  again:
> > +#endif
> >      fd = openat(dirfd, name, flags | O_NOFOLLOW | O_NOCTTY | O_NONBLOCK,
> >                  mode);
> >      if (fd == -1) {
> >
> > Will, can you check why this did not fail there and whether there are
> > probably
> > more issues?
> >
> > If that's the only one, let me know, then I would fix this on my end and
> > resend a PR ASAP. Thanks!
> 
> 
> These were just warnings for me so I didn’t worry about them. Will check
> where else it appears when building!
> 

Compiler warnings are frowned upon in the QEMU community since they
likely point to something that isn't right in your code. As you
might see, Peter's build has -Werror set and so have the builds
in the gitlab CI. Please consider passing --enable-werror to
configure, at least when you're about to post to the list.

> 
> >
> > Best regards,
> > Christian Schoenebeck
> >
> >
> >