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Date:   Mon, 23 Sep 2019 11:19:34 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Alexander Kapshuk <alexander.kapshuk@gmail.com>
Cc:     linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com,
        hpa@zytor.com, x86@kernel.org, kbuild test robot <lkp@intel.com>
Subject: Re: [PATCH RESEND] gen-insn-attr-x86.awk: Fix regexp warnings
Message-ID: <20190923091934.GA15355@zn.tnic>
References: <20190922083342.GO13569@xsang-OptiPlex-9020>
 <20190922150328.6722-1-alexander.kapshuk@gmail.com>
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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