Re: [PATCH rdma-core] verbs: Fix warning from gcc-8

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Jul 12, 2018 at 07:38:34AM +0300, Leon Romanovsky wrote:
> On Wed, Jul 11, 2018 at 01:57:04PM -0600, Jason Gunthorpe wrote:
> > On Wed, Jul 11, 2018 at 10:09:05PM +0300, Leon Romanovsky wrote:
> > > On Wed, Jul 11, 2018 at 11:20:12AM -0600, Jason Gunthorpe wrote:
> > > > gcc-8 now warns on the void (*)(void) cast, use the less pedantically
> > > > correct (void *) cast instead.
> > > >
> > > > ../libibverbs/dummy_ops.c:526:28: warning: cast between incompatible function types from ‘struct ibv_pd * (* const)(struct ibv_context *)’ to ‘void * (*)(void)’ [-Wcast-function-type]
> > > >     (ptr)->_compat_##name = (void *(*)(void))ops->name;    \
> > > >
> > > > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
> > > >  libibverbs/dummy_ops.c | 2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > >
> > >
> > > I don't see such warning on my systems,
> > > ➜  patches gcc --version
> > > gcc (GCC) 8.1.1 20180502 (Red Hat 8.1.1-1)
> > >
> > > What should I enable to see it?
> >
> > No idea, maybe they reverted the warning or RH turned it off or ??
> 
> It looks so,
> ➜  gcc -Q --help=warning | grep "Wcast-function-type"
>   -Wcast-function-type                  [disabled]
>
> >
> > I see it here:
> >
> > gcc version 8.1.0 (Ubuntu 8.1.0-5ubuntu1~16.04)
> >
> > As does travis when building the suse package
> 
> You need to add this warning to CmakeList.txt
> https://github.com/linux-rdma/rdma-core/blob/master/CMakeLists.txt#L165

Maybe we should just disable it from CMake, if the thinking is that
this is not a good warning to use..

Jason
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Photo]     [Yosemite News]     [Yosemite Photos]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux