netdev - Re: [PATCH v3 net-next 0/2] bpfilter

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Date:   Wed, 23 May 2018 18:33:52 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Alexei Starovoitov <ast@...nel.org>
Cc:     "David S . Miller" <davem@...emloft.net>, <daniel@...earbox.net>,
        <torvalds@...ux-foundation.org>, <gregkh@...uxfoundation.org>,
        <luto@...capital.net>, <mcgrof@...nel.org>,
        <keescook@...omium.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kernel-team@...com>
Subject: Re: [PATCH v3 net-next 0/2] bpfilter

Minor glitch with Ubuntu 18.04:

$ gcc --version
gcc (Ubuntu 7.3.0-16ubuntu3) 7.3.0

In file included from /usr/include/fcntl.h:290:0,
                 from ../net/bpfilter/main.c:7:
In function ‘open’,
    inlined from ‘main’ at ../net/bpfilter/main.c:58:13:
/usr/include/x86_64-linux-gnu/bits/fcntl2.h:50:4: error: call to ‘__open_missing_mode’ declared with attribute error: open with O_CREAT or O_TMPFILE in second argument needs 3 arguments
    __open_missing_mode ();
    ^~~~~~~~~~~~~~~~~~~~~~
scripts/Makefile.host:107: recipe for target 'net/bpfilter/main.o' failed
make[3]: *** [net/bpfilter/main.o] Error 1

I can't repro on Fedora 27 gcc (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5),
perhaps the GCC is broken on that Ubuntu 18.04 box of mine.  The warning/
/error, however, looks potentially legit?