linux-kernel - Re: Implement lbr-as-callgraph v10

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Message-ID: <20141119153150.GI12538@two.firstfloor.org>
Date:	Wed, 19 Nov 2014 16:31:50 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Jiri Olsa <jolsa@...hat.com>, Andi Kleen <andi@...stfloor.org>,
	Jiri Olsa <jolsa@...nel.org>, linux-kernel@...r.kernel.org,
	Namhyung Kim <namhyung@...nel.org>,
	"Liang, Kan" <kan.liang@...el.com>
Subject: Re: Implement lbr-as-callgraph v10

> > > I'm getting compile error for DEBUG=1
> 
> > looks like the BUILD_BUG_ON_MSG does not work correctly with -O6 we use
> 
> Yeah, I'll probably just take the brute force approach Andi originally
> used and switch to BUILD_BUG_ON_MSG once we get it working in the tools/
> environment, i.e. using -O6, etc.

For new enough gcc you could use _Static_assert()

-Andi
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