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From:   Alexander Kapshuk <alexander.kapshuk@gmail.com>
Date:   Mon, 23 Sep 2019 12:56:14 +0300
Message-ID: <CAJ1xhMVrbAYi2=2L1Tt5qdOWGPHgo_htMZTZQVjJyWNTda2z+w@mail.gmail.com>
Subject: Re: [PATCH RESEND] gen-insn-attr-x86.awk: Fix regexp warnings
To:     Borislav Petkov <bp@alien8.de>
Cc:     linux-kernel <linux-kernel@vger.kernel.org>, tglx@linutronix.de,
        mingo@redhat.com, hpa@zytor.com, x86@kernel.org,
        kbuild test robot <lkp@intel.com>
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On Mon, Sep 23, 2019 at 12:19 PM Borislav Petkov <bp@alien8.de> wrote:
>
> On Sun, Sep 22, 2019 at 06:03:28PM +0300, Alexander Kapshuk wrote:
> > This patch fixes the regexp warnings shown below:
> > GEN      /home/sasha/torvalds/tools/objtool/arch/x86/lib/inat-tables.c
> > awk: ../arch/x86/tools/gen-insn-attr-x86.awk:260: warning: regexp escape sequence `\:' is not a known regexp operator
> > awk: ../arch/x86/tools/gen-insn-attr-x86.awk:350: (FILENAME=../arch/x86/lib/x86-opcode-map.txt FNR=41) warning: regexp escape sequence `\&' is not a known regexp operator
> >
> > The ':' and '&' characters need not escaping when used in string constants
> > as part of regular expressions.
>
> How do you trigger this?
>
> I don't see it in my builds so it looks like environment thing. What
> flavor of awk is yours?
>
> Thx.
>
> --
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette

gawk 5.0.1-1 on Arch Linux.