linux-kernel - Re: [PATCH 1/5] perf: fix broken union in perf_event_mmap

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Message-ID: <51E533BA.3060103@zytor.com>
Date:	Tue, 16 Jul 2013 04:51:22 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Adrian Hunter <adrian.hunter@...el.com>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 1/5] perf: fix broken union in perf_event_mmap_page

On 06/28/2013 08:22 AM, Peter Zijlstra wrote:
> 
> Ick, it did that!? and here I thought there was a difference between:
> 
>   int foo:1,
>       bar:1;
> 
> and
> 
>   int foo:1;
>   int bar:1;
> 
> That made all the difference in this particular case. I guess I should
> go read the language spec more carefully next time.
> 

There is absolutely no difference there...

	-hpa

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