netdev - Re: [PATCH net v2 1/2] ipv6: constify rt6

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Message-ID: <CAKwvOdmd2AooQrpPhBVhcRHGNsMoGFiXSyBA4_aBf7=oVeOx1g@mail.gmail.com>
Date:   Mon, 24 Jun 2019 10:17:03 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     David Miller <davem@...emloft.net>
Cc:     Nicolas Dichtel <nicolas.dichtel@...nd.com>,
        netdev@...r.kernel.org, kbuild test robot <lkp@...el.com>
Subject: Re: [PATCH net v2 1/2] ipv6: constify rt6_nexthop()

On Mon, Jun 24, 2019 at 10:06 AM David Miller <davem@...emloft.net> wrote:
>
> From: Nick Desaulniers <ndesaulniers@...gle.com>
> Date: Mon, 24 Jun 2019 09:45:14 -0700
>
> > https://groups.google.com/forum/#!searchin/clang-built-linux/const%7Csort:date/clang-built-linux/umkS84jS9m8/GAVVEgNYBgAJ
>
> Inaccessible...
>
>         This group either doesn't exist, or you don't have permission
>         to access it. If you're sure this group exists, contact the
>         Owner of the group and ask them to give you access.

Sorry, I set up the mailing list not too long ago, seem to have a long
tail of permissions related issues.  I confirmed that the link was
borked in an incognito window.  Via
https://support.google.com/a/answer/9325317#Visibility I was able to
change the obscure setting.  I now confirmed the above link works in
an incognito window.  Thanks for reporting; can you please triple
check?

>
> And you mean just changing to 'const' fixes something, how?

See the warning in the above link (assuming now you have access).
Assigning a non-const variable the result of a function call that
returns const discards the const qualifier.

-- 
Thanks,
~Nick Desaulniers