From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Howells <dhowells@redhat.com>
Subject: Re: [resend][PATCH] fs: use kernel's hex_to_bin() method
Date: Wed, 05 Jan 2011 09:54:58 +0000
Message-ID: <28315.1294221298@redhat.com>
References: <20110104152100.29d0da02.akpm@linux-foundation.org> <1291978505-29076-1-git-send-email-andy.shevchenko@gmail.com>
Cc: dhowells@redhat.com, Andy Shevchenko <andy.shevchenko@gmail.com>,
	linux-kernel@vger.kernel.org,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	linux-fsdevel@vger.kernel.org, Mimi Zohar <zohar@us.ibm.com>,
	"Serge E. Hallyn" <serge@hallyn.com>,
	James Morris <jmorris@namei.org>
To: Andrew Morton <akpm@linux-foundation.org>
Return-path: <linux-fsdevel-owner@vger.kernel.org>
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Andrew Morton <akpm@linux-foundation.org> wrote:

> Not a terribly convenient convenience, as most callers will need to cast
> away the constness of the return value.  Oh well, those callers should
> have been using a `const char *' anyway.

Maybe.  You could always do as strchr():

	char *strchr(const char *s, int c);

Then you don't need to cast the result.  The problem[*] is that you can't tell
the compiler that the return value should carry the same constness as one of
the arguments because you don't have something like C++ templates.

  [*] If indeed not having C++ or templates should be seen as a problem...

David