linux-kernel - Re: linux-next: Tree for Sep 17 (net/ipv4/devinet.c)

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Date:   Fri, 18 Sep 2020 10:25:36 +0200
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: linux-next: Tree for Sep 17 (net/ipv4/devinet.c)

Le 17/09/2020 à 22:45, Randy Dunlap a écrit :
> On 9/17/20 3:23 AM, Stephen Rothwell wrote:
>> Hi all,
>>
>> Changes since 20200916:
>>
> 
> 
> Maybe some older versions of gcc just can't handle IS_ENABLED() inside an
> if (expression) very well.
> 
>> gcc --version
> gcc (SUSE Linux) 7.5.0
I tried with a (very old) gcc and I did not reproduce this error:
$ gcc --version
gcc (Debian 4.9.2-10+deb8u2) 4.9.2


> 
> This patch:
> 
> commit 9efd6a3cecdde984d67e63d17fe6af53c7c50968
> Author: Nicolas Dichtel <nicolas.dichtel@...nd.com>
> Date:   Wed May 13 15:58:43 2020 +0200
> 
>     netns: enable to inherit devconf from current netns
> 
> causes a build error:
> 
> ../net/ipv4/devinet.c: In function ‘devinet_init_net’:
> ../net/ipv4/devinet.c:2672:7: error: ‘sysctl_devconf_inherit_init_net’ undeclared (first use in this function); did you mean ‘devinet_init_net’?
>        sysctl_devconf_inherit_init_net == 3) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>        devinet_init_net
> ../net/ipv4/devinet.c:2672:7: note: each undeclared identifier is reported only
> 
>