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Date:	Mon, 26 Oct 2009 07:25:20 +0100
From:	Ingo Molnar <>
To:	Paul Mundt <>
Subject: Re: [PATCH] perf tools: Kill off -Wcast-align

* Paul Mundt <> wrote:

> The present use of -Wcast-align causes the build to blow up on SH due to
> generating a "cast increases required alignment of target type" error on
> each invocation of list_for_each_entry().
> It seems that this was previously reported and killed off in the ia64
> support patch, but nothing seems to have happened with that. Presumably
> the same problem still remains there, too.
> Signed-off-by: Paul Mundt <>

Is this a GCC bug producing false positive warnings? The GCC manpage 

           Warn whenever a pointer is cast such that the required alignment of the
           target is increased.  For example, warn if a "char *" is cast to an
           "int *" on machines where integers can only be accessed at two- or
           four-byte boundaries.

Which looks moderately useful - if it works.

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