linux-kernel - Re: [PATCH] rdma/siw: Use proper enumerated type in map_cqe

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Message-ID: <20190711030235.GA12012@archlinux-threadripper>
Date:   Wed, 10 Jul 2019 20:02:35 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Jason Gunthorpe <jgg@...pe.ca>,
        Bernard Metzler <bmt@...ich.ibm.com>,
        Doug Ledford <dledford@...hat.com>, linux-rdma@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] rdma/siw: Use proper enumerated type in map_cqe_status

On Wed, Jul 10, 2019 at 04:53:50PM -0700, Nick Desaulniers wrote:
> On Wed, Jul 10, 2019 at 11:26 AM Jason Gunthorpe <jgg@...pe.ca> wrote:
> >
> > On Wed, Jul 10, 2019 at 10:48:00AM -0700, Nathan Chancellor wrote:
> > > clang warns several times:
> > >
> > > drivers/infiniband/sw/siw/siw_cq.c:31:4: warning: implicit conversion
> > > from enumeration type 'enum siw_wc_status' to different enumeration type
> > > 'enum siw_opcode' [-Wenum-conversion]
> > Weird that gcc doesn't warn on this by default..
> 
> Based on the sheer number of -Wenum-conversion that Nathan has fixed,
> I don't think gcc has -Wenum-conversion (or it's somehow disabled just
> for gcc).
> -- 
> Thanks,
> ~Nick Desaulniers

Yes, as far as I am aware, GCC does not warn on implicit enum
conversions (which I think defeats the purpose of enumerated types
*shrugs*).

Cheers,
Nathan