linux-kernel - Re: [PATCH] linux/types.h: remove prehistoric ifndefs

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Message-ID: <20150613021543.GA7232@ZenIV.linux.org.uk>
Date:	Sat, 13 Jun 2015 03:15:43 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] linux/types.h: remove prehistoric ifndefs

On Thu, Jun 11, 2015 at 11:43:58AM +0200, Rasmus Villemoes wrote:
> Whatever the "historical reasons" were back around 1996 when this
> comment was added,
> 
>   git grep -E '\b_(S?SIZE|TIME|CLOCK|PTRDIFF|CADDR)_T\b'
> 
> seems to say that they are no longer relevant. Relieve the
> preprocessor from a little work.

You are looking in the wrong place.  Check your compiler's stddef.h - things
like
/usr/lib/gcc/x86_64-linux-gnu/4.9/include/stddef.h:#define _SIZE_T
or
/usr/lib/llvm-3.5/lib/clang/3.5.0/include/stddef.h:#define _SIZE_T
along with the things like
typedef __SIZE_TYPE__ size_t;
this sucker is protecting.
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