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Re: [RFC v5 01/21] sunrpc/clnt_udp: Ensure total_deadline is initalised
- From: Zack Weinberg <zackw at panix dot com>
- To: Joseph Myers <joseph at codesourcery dot com>
- Cc: Alistair Francis <alistair23 at gmail dot com>, Alistair Francis <alistair dot francis at wdc dot com>, GNU C Library <libc-alpha at sourceware dot org>, Arnd Bergmann <arnd at arndb dot de>, Adhemerval Zanella <adhemerval dot zanella at linaro dot org>, Florian Weimer <fweimer at redhat dot com>, Palmer Dabbelt <palmer at sifive dot com>, macro at wdc dot com, Zong Li <zongbox at gmail dot com>
- Date: Thu, 5 Sep 2019 11:12:43 -0400
- Subject: Re: [RFC v5 01/21] sunrpc/clnt_udp: Ensure total_deadline is initalised
- References: <firstname.lastname@example.org> <email@example.com> <alpine.DEB.firstname.lastname@example.org> <CAKCAbMjmQaFTJ3NskTttrVPoSb-OmLJok1+Qe5hwaXa3VSpwXg@mail.gmail.com> <CAKmqyKMTG8kWkjJ2+OWY3kxOch45Qg4sVfcfA719djCfyrGuWg@mail.gmail.com> <alpine.DEB.email@example.com>
On Thu, Sep 5, 2019 at 11:03 AM Joseph Myers <firstname.lastname@example.org> wrote:
> On Thu, 5 Sep 2019, Alistair Francis wrote:
> > On Thu, Aug 29, 2019 at 10:34 AM Zack Weinberg <email@example.com> wrote:
> > >
> > > On Thu, Aug 29, 2019 at 1:22 PM Joseph Myers <firstname.lastname@example.org> wrote:
> > > > On Thu, 29 Aug 2019, Alistair Francis wrote:
> > > > > Even though total_deadline won't be accessed uninitalised GCC can still
> > > > > complain that it is accessed unitalised, to avod those errors let's make
> > > > > sure we initalise it to 0.
> > > >
> > > > It's glibc practice (although missing from
> > > > <https://sourceware.org/glibc/wiki/Style_and_Conventions>) that we *don't*
> > > > add initializations like that to avoid warnings.
> > >
> > > Although this has historically been glibc practice, I think it is
> > > unwisely incautious, and we should change the policy to be that we
> > > *do* add initializations whenever the compiler thinks a variable even
> > > _might_ be used uninitialized.
> > Does that mean this patch is ok?
> No. You can't deduce consensus like that from two different views on a
> patch or a convention.
Joseph, you have a tendency to throw up procedural objections to
_everything_, and I feel I need to ask you to tone it down a little.
This project has historically been perceived as unwelcoming to new
contributors, and I think a major remaining reason for that is all the
procedure -- some of which is genuinely necessary, but not all.
> Even if we were to change the convention regarding
> how to silence such warnings, I see reason to have any less requirement
> for comments explaining why the warning is a false positive and that the
> initializer is only there to silence a warning than there is for the
> DIAG_* macros.
In general I would agree, but this is the obsolete sunrpc directory
we're talking about; I don't think it's worth putting more than the
bare minimum effort into code that we plan to delete eventually.