linux-kernel - Re: CONFIG_KPROBES=y build requires gawk

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Message-ID: <ada7hsm6y3g.fsf@roland-alpha.cisco.com>
Date:	Wed, 16 Dec 2009 20:09:07 -0800
From:	Roland Dreier <rdreier@...co.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Andrew Isaacson <adi@...are.com>, Ingo Molnar <mingo@...hat.com>,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	linux-kbuild@...r.kernel.org,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Rob Landley <rob@...dley.net>
Subject: Re: CONFIG_KPROBES=y build requires gawk


 > > Is there any reason not to apply the patch below, to allow more awk
 > > implementations to be used?  After all, it's not like we're going to put
 > > non-ASCII characters into the map file...

 > I guess the question is if it will break under any other circumstances,
 > but I guess we can find those when we get to them.

I should have mentioned it, but with the current Debian testing version
(mawk 1.3.3-15) and my patch, I get a byte-for-byte identical
inat-tables.c to what I get with the unpatched kernel and gawk
1:3.1.6.dfsg-4.

I'm not sure how likely all this is to change in the future, but it's
hard for me to see a sane reason why eg [:lower:] and a-z would be
different for this use.

 - R.
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